Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
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| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1964 | Episode 1 | The World of Buckminster Fuller | 1964-02-05 | 60 min |
| Season 1964 | Episode 2 | Pesticides and Posterity | 1964-05-30 | 60 min |
| Season 1964 | Episode 3 | A Candle to Nature | 1964-06-27 | 60 min |
| Season 1964 | Episode 4 | Strangeness Minus Three | 1964-07-25 | 60 min |
| Season 1964 | Episode 5 | The Air of Science | 1964-08-22 | 60 min |
| Season 1964 | Episode 6 | The Knowledge Explosion | 1964-09-21 | 60 min |
| Season 1964 | Episode 7 | The Amateur Scientist | 1964-10-19 | 60 min |
| Season 1964 | Episode 8 | Tots and Quods and Woodgeries | 1964-11-16 | 60 min |
| Season 1964 | Episode 9 | Professor J.B.S. Haldane, Obituary | 1964-12-01 | 60 min |
| Season 1964 | Episode 10 | Science, Toys and Magic | 1964-12-14 | 60 min |
| Season 1965 | Episode 1 | Learning from Machines | 1965-01-06 | 60 min |
| Season 1965 | Episode 2 | The Technique of Change | 1965-01-20 | 60 min |
| Season 1965 | Episode 3 | Star Gazers | 1965-02-03 | 60 min |
| Season 1965 | Episode 4 | Science and Art | 1965-02-17 | 60 min |
| Season 1965 | Episode 5 | The Great Computer Scandal | 1965-03-03 | 60 min |
| Season 1965 | Episode 6 | Faster, Farther, Higher | 1965-03-17 | 60 min |
| Season 1965 | Episode 7 | Restless Genius | 1965-03-31 | 60 min |
| Season 1965 | Episode 8 | Other Side of the Pill | 1965-04-14 | 60 min |
| Season 1965 | Episode 9 | The Big Smoke | 1965-05-12 | 60 min |
| Season 1965 | Episode 10 | The Long Slide | 1965-05-26 | 60 min |
| Season 1965 | Episode 11 | Men and Sharks | 1965-06-09 | 60 min |
| Season 1965 | Episode 12 | The Sudden Light | 1965-06-23 | 60 min |
| Season 1965 | Episode 13 | Dr. Joseph Needham | 1965-07-14 | 60 min |
| Season 1965 | Episode 14 | Science Fiction: Science Fact? | 1965-07-28 | 60 min |
| Season 1965 | Episode 15 | Certain of Uncertainty | 1965-08-11 | 60 min |
| Season 1965 | Episode 16 | Time Stood Still | 1965-08-25 | 60 min |
| Season 1965 | Episode 17 | Fuel for the Future | 1965-09-08 | 60 min |
| Season 1965 | Episode 18 | Let Newton Be | 1965-09-22 | 60 min |
| Season 1965 | Episode 19 | Special Senses | 1965-10-10 | 60 min |
| Season 1965 | Episode 20 | An Affair of the Heart | 1965-10-24 | 60 min |
| Season 1965 | Episode 21 | 10,000 Tombs | 1965-11-07 | 60 min |
| Season 1965 | Episode 22 | Toil, Sweat & Tears | 1965-11-21 | 60 min |
| Season 1965 | Episode 23 | The Big Dishes and the Living Stream | 1965-12-05 | 60 min |
| Season 1965 | Episode 24 | Boys on Bubbles | 1965-12-19 | 60 min |
| Season 1966 | Episode 1 | Windows of the Soul | 1966-01-02 | 60 min |
| Season 1966 | Episode 2 | The Troubled Mind | 1966-01-16 | 60 min |
| Season 1966 | Episode 3 | A Man of Two Visions | 1966-01-30 | 60 min |
| Season 1966 | Episode 4 | A Theory of the Earth | 1966-02-13 | 60 min |
| Season 1966 | Episode 5 | Route 128 | 1966-02-27 | 60 min |
| Season 1966 | Episode 6 | The Beginning of Life | 1966-03-13 | 60 min |
| Season 1966 | Episode 7 | So You Want to Be an Inventor? | 1966-03-27 | 60 min |
| Season 1966 | Episode 8 | Chance and Decay | 1966-04-10 | 60 min |
| Season 1966 | Episode 9 | Towers of Ilium | 1966-04-24 | 60 min |
| Season 1966 | Episode 10 | Man in Space | 1966-05-08 | 60 min |
| Season 1966 | Episode 11 | Destination Mars | 1966-05-22 | 60 min |
| Season 1966 | Episode 12 | Man Meets Duck | 1966-06-05 | 60 min |
| Season 1966 | Episode 13 | Where Must the Money Go? | 1966-06-19 | 60 min |
| Season 1966 | Episode 14 | Genes in Action | 1966-07-03 | 60 min |
| Season 1966 | Episode 15 | The Lonely Children | 1966-07-17 | 60 min |
| Season 1966 | Episode 16 | Man of Science | 1966-07-31 | 60 min |
| Season 1966 | Episode 17 | The Dolphins That Joined the Navy | 1966-09-11 | 60 min |
| Season 1966 | Episode 18 | M.I.T's ABC | 1966-09-25 | 60 min |
| Season 1966 | Episode 19 | Ten Years in the Antarctic | 1966-10-10 | 60 min |
| Season 1966 | Episode 20 | The Athlete | 1966-10-24 | 60 min |
| Season 1966 | Episode 21 | From Peenemünde to the Moon | 1966-11-07 | 60 min |
| Season 1966 | Episode 22 | Sex-Change? | 1966-11-21 | 60 min |
| Season 1966 | Episode 23 | The Structure of Life | 1966-12-05 | 60 min |
| Season 1966 | Episode 24 | Hand Me My Sword, Humphrey | 1966-12-25 | 60 min |
| Season 1967 | Episode 1 | Sons of Cain | 1967-01-17 | 60 min |
| Season 1967 | Episode 2 | How Best to Make a Man, How Best to Make a Scientist | 1967-02-17 | 60 min |
| Season 1967 | Episode 3 | Dynamo - The Life of Michael Faraday | 1967-02-28 | 60 min |
| Season 1967 | Episode 4 | Migraine | 1967-03-14 | 60 min |
| Season 1967 | Episode 5 | How Safe is Surgery? | 1967-03-28 | 60 min |
| Season 1967 | Episode 6 | The Shape of War to Come | 1967-04-25 | 60 min |
| Season 1967 | Episode 7 | Memory | 1967-05-09 | 60 min |
| Season 1967 | Episode 8 | Masters of the Desert | 1967-05-23 | 60 min |
| Season 1967 | Episode 9 | Cancer - The Smoker's Gamble | 1967-06-20 | 60 min |
| Season 1967 | Episode 10 | Science and the Supernatural | 1967-07-04 | 60 min |
| Season 1967 | Episode 11 | Hypnosis | 1967-07-18 | 60 min |
| Season 1967 | Episode 12 | The War of the Boffins | 1967-09-12 | 60 min |
| Season 1967 | Episode 13 | Aspects of Alcohol | 1967-09-26 | 60 min |
| Season 1967 | Episode 14 | Lords of the Sea | 1967-10-10 | 60 min |
| Season 1967 | Episode 15 | Will Art Last? | 1967-10-24 | 60 min |
| Season 1967 | Episode 16 | Air Safety - The Unknown Factor | 1967-11-07 | 60 min |
| Season 1967 | Episode 17 | The Life and Death of the Pine Processionary | 1967-11-21 | 60 min |
| Season 1967 | Episode 18 | Koestler on Creativity | 1967-12-05 | 60 min |
| Season 1967 | Episode 19 | The World of Ted Serios | 1967-12-12 | 60 min |
| Season 1967 | Episode 20 | Professor in Toyland | 1967-12-24 | 60 min |
| Season 1968 | Episode 1 | An Ingenious Man - Sir H. John Baker | 1968-01-02 | 60 min |
| Season 1968 | Episode 2 | Man's Best Friend | 1968-01-30 | 60 min |
| Season 1968 | Episode 3 | Once a Junkie | 1968-02-13 | 60 min |
| Season 1968 | Episode 4 | Towns, Traffic and Tomorrow | 1968-02-27 | 60 min |
| Season 1968 | Episode 5 | The Man Makers | 1968-03-12 | 60 min |
| Season 1968 | Episode 6 | Man in Search of Himself | 1968-03-26 | 60 min |
| Season 1968 | Episode 7 | Investigating Murder | 1968-04-09 | 60 min |
| Season 1968 | Episode 8 | The Equation of Murder | 1968-05-07 | 60 min |
| Season 1968 | Episode 9 | The Lindemann Enigma | 1968-09-12 | 60 min |
| Season 1968 | Episode 10 | From Field to Factory | 1968-09-19 | 60 min |
| Season 1968 | Episode 11 | Comfort on Aging | 1968-09-26 | 60 min |
| Season 1968 | Episode 12 | Experiments in War | 1968-10-03 | 60 min |
| Season 1968 | Episode 13 | African Medicine | 1968-10-17 | 60 min |
| Season 1968 | Episode 14 | The Broken Bridge | 1968-10-24 | 60 min |
| Season 1968 | Episode 15 | Children Without Words | 1968-10-31 | 60 min |
| Season 1968 | Episode 16 | Computer Revolution | 1968-11-07 | 60 min |
| Season 1968 | Episode 17 | The Doctor's Dilemma | 1968-11-14 | 60 min |
| Season 1968 | Episode 18 | In the Matter of Dr. Alfred Nobel | 1968-11-21 | 60 min |
| Season 1968 | Episode 19 | Wheels Within Wheels | 1968-11-28 | 60 min |
| Season 1968 | Episode 20 | Black Man, White Science | 1968-12-05 | 60 min |
| Season 1968 | Episode 21 | Hidden World | 1968-12-12 | 60 min |
| Season 1968 | Episode 22 | The Talgai Skull | 1968-12-19 | 60 min |
| Season 1968 | Episode 23 | Phantasmagoria: The Magic Lantern | 1968-12-24 | 60 min |
| Season 1969 | Episode 1 | Inside Every Fat Man | 1969-01-02 | 60 min |
| Season 1969 | Episode 2 | If Only They Could Speak | 1969-01-09 | 60 min |
| Season 1969 | Episode 3 | The Miraculous Wonder: The Human Eye | 1969-01-16 | 60 min |
| Season 1969 | Episode 4 | The Years of the Locust | 1969-01-23 | 60 min |
| Season 1969 | Episode 5 | The Gifted Child | 1969-01-30 | 60 min |
| Season 1969 | Episode 6 | The Last of the Polymaths | 1969-02-06 | 60 min |
| Season 1969 | Episode 7 | Music and the Mind | 1969-02-13 | 60 min |
| Season 1969 | Episode 8 | Report on V.D. | 1969-02-20 | 60 min |
| Season 1969 | Episode 9 | A True Madness | 1969-02-22 | 60 min |
| Season 1969 | Episode 10 | Extra Sensory Perception | 1969-02-27 | 60 min |
| Season 1969 | Episode 11 | The Drift from Science | 1969-03-06 | 60 min |
| Season 1969 | Episode 12 | Powers of Persuasion | 1969-03-13 | 60 min |
| Season 1969 | Episode 13 | The View from Space | 1969-03-20 | 60 min |
| Season 1969 | Episode 14 | The Unborn Patient | 1969-03-27 | 60 min |
| Season 1969 | Episode 15 | King Solomon's Garden | 1969-04-10 | 60 min |
| Season 1969 | Episode 16 | Muck Today, Poison Tomorrow | 1969-04-24 | 60 min |
| Season 1969 | Episode 17 | Shark | 1969-05-01 | 60 min |
| Season 1969 | Episode 18 | Technology and Self-Determination | 1969-05-15 | 60 min |
| Season 1969 | Episode 19 | After Apollo | 1969-05-22 | 60 min |
| Season 1969 | Episode 20 | Discovery | 1969-05-29 | 60 min |
| Season 1969 | Episode 21 | Machines and People | 1969-06-05 | 60 min |
| Season 1969 | Episode 22 | Science on Safari | 1969-09-15 | 60 min |
| Season 1969 | Episode 23 | The Problem of Pain | 1969-09-29 | 60 min |
| Season 1969 | Episode 24 | Four Fast Legs and a Nose | 1969-10-06 | 60 min |
| Season 1969 | Episode 25 | Father of the Man | 1969-10-13 | 60 min |
| Season 1969 | Episode 26 | Master of the Microscope | 1969-10-20 | 60 min |
| Season 1969 | Episode 27 | C.E.R.N. | 1969-10-27 | 60 min |
| Season 1969 | Episode 28 | Snap, Crackle and Bang | 1969-11-03 | 60 min |
| Season 1969 | Episode 29 | Cancer Now | 1969-11-10 | 60 min |
| Season 1969 | Episode 30 | There's a Rhino in My Sugar | 1969-11-17 | 60 min |
| Season 1969 | Episode 31 | Fit to Live | 1969-11-24 | 60 min |
| Season 1969 | Episode 32 | Don't Cackle, Lay Eggs | 1969-12-01 | 60 min |
| Season 1969 | Episode 33 | How Much Do You Drink? | 1969-12-08 | 60 min |
| Season 1969 | Episode 34 | A Game of War | 1969-12-15 | 60 min |
| Season 1969 | Episode 35 | Bread | 1969-12-22 | 60 min |
| Season 1969 | Episode 36 | For the Safety of Mankind | 1969-12-29 | 60 min |
| Season 1970 | Episode 1 | Just Another World | 1970-01-05 | 60 min |
| Season 1970 | Episode 2 | Henry Royce, Mechanic | 1970-01-12 | 60 min |
| Season 1970 | Episode 3 | A Disease of Our Time - Stress | 1970-01-19 | 60 min |
| Season 1970 | Episode 4 | A Disease of Our Time - Heart Attacks | 1970-01-26 | 60 min |
| Season 1970 | Episode 5 | Sex and Sexuality | 1970-02-02 | 60 min |
| Season 1970 | Episode 6 | Whose Coast? | 1970-02-16 | 60 min |
| Season 1970 | Episode 7 | A Much Wanted Child | 1970-02-23 | 60 min |
| Season 1970 | Episode 8 | The Expert Witness | 1970-03-02 | 60 min |
| Season 1970 | Episode 9 | After the Iron Age | 1970-03-09 | 60 min |
| Season 1970 | Episode 10 | Let the Therapy Fit the Crime | 1970-03-16 | 60 min |
| Season 1970 | Episode 11 | The World Outside | 1970-03-23 | 60 min |
| Season 1970 | Episode 12 | In the Beginning Was the Word | 1970-03-30 | 60 min |
| Season 1970 | Episode 13 | The Drifting of the Continents | 1970-04-13 | 60 min |
| Season 1970 | Episode 14 | A Case of Priority | 1970-04-20 | 60 min |
| Season 1970 | Episode 15 | The Fretful Elements | 1970-04-27 | 60 min |
| Season 1970 | Episode 16 | One Man's Meat | 1970-05-11 | 60 min |
| Season 1970 | Episode 17 | Only Skin Deep | 1970-07-06 | 60 min |
| Season 1970 | Episode 18 | Wolves and Wolfmen | 1970-07-13 | 60 min |
| Season 1970 | Episode 19 | A Measure of Uncertainty | 1970-08-10 | 60 min |
| Season 1970 | Episode 20 | The Manhunters | 1970-08-17 | 60 min |
| Season 1970 | Episode 21 | Don't Get Sick in America | 1970-08-24 | 60 min |
| Season 1970 | Episode 22 | Crown of Thorns | 1970-08-31 | 60 min |
| Season 1970 | Episode 23 | Noah's Ark in Kensington | 1970-09-07 | 60 min |
| Season 1970 | Episode 24 | Virus | 1970-09-14 | 60 min |
| Season 1970 | Episode 25 | Water, Water | 1970-09-21 | 60 min |
| Season 1970 | Episode 26 | All Creatures Great and Small | 1970-09-28 | 60 min |
| Season 1970 | Episode 27 | Child for a Lifetime | 1970-10-05 | 60 min |
| Season 1970 | Episode 28 | Something for Our Children | 1970-10-12 | 60 min |
| Season 1970 | Episode 29 | Million Ton Tanker | 1970-11-02 | 60 min |
| Season 1970 | Episode 30 | The Insect War | 1970-11-09 | 60 min |
| Season 1970 | Episode 31 | The Savage Mind | 1970-11-16 | 60 min |
| Season 1970 | Episode 32 | Tanks | 1970-11-23 | 60 min |
| Season 1970 | Episode 33 | Mind the Machine | 1970-11-30 | 60 min |
| Season 1970 | Episode 34 | Square Pegs | 1970-12-07 | 60 min |
| Season 1970 | Episode 35 | The City That Waits to Die | 1970-12-14 | 60 min |
| Season 1970 | Episode 36 | The Man Who Talks to Frogs | 1970-12-21 | 60 min |
| Season 1970 | Episode 37 | The Gargantuan Triumph of Science | 1970-12-28 | 60 min |
| Season 1971 | Episode 1 | Wildlife - The Last Great Battle | 1971-01-04 | 60 min |
| Season 1971 | Episode 2 | Great Ormond Street | 1971-01-18 | 60 min |
| Season 1971 | Episode 3 | A Bulldozer Through Heaven | 1971-01-25 | 60 min |
| Season 1971 | Episode 4 | Rumors of War | 1971-02-01 | 60 min |
| Season 1971 | Episode 5 | I'm Dependent - You're Addicted | 1971-02-15 | 60 min |
| Season 1971 | Episode 6 | Kuru - To Tremble with Fear | 1971-02-22 | 60 min |
| Season 1971 | Episode 7 | Due to a Lack of Interest, Tomorrow Has Been Canceled | 1971-03-08 | 60 min |
| Season 1971 | Episode 8 | What Kind of Doctor? | 1971-03-15 | 60 min |
| Season 1971 | Episode 9 | Nice Sort of Accident to Have | 1971-03-22 | 60 min |
| Season 1971 | Episode 10 | The Wood | 1971-04-05 | 60 min |
| Season 1971 | Episode 11 | The Measure of a Man | 1971-04-12 | 60 min |
| Season 1971 | Episode 12 | Three Score Years and Then? | 1971-04-26 | 60 min |
| Season 1971 | Episode 13 | Darwin's Bulldog | 1971-05-03 | 60 min |
| Season 1971 | Episode 14 | The Secret | 1971-05-10 | 60 min |
| Season 1971 | Episode 15 | What Every Girl Should Know | 1971-05-17 | 60 min |
| Season 1971 | Episode 16 | Tastes of Food to Come | 1971-05-24 | 60 min |
| Season 1971 | Episode 17 | Looking for a Happy Landing | 1971-05-31 | 60 min |
| Season 1971 | Episode 18 | A Case of Depression | 1971-06-07 | 60 min |
| Season 1971 | Episode 19 | The Total War Machine | 1971-06-14 | 60 min |
| Season 1971 | Episode 20 | The Dinosaur Hunters | 1971-06-21 | 60 min |
| Season 1971 | Episode 21 | Your Country Needs You | 1971-09-27 | 60 min |
| Season 1971 | Episode 22 | Rheumatism | 1971-10-04 | 60 min |
| Season 1971 | Episode 23 | If at First You Don't Succeed...You Don't Succeed | 1971-10-11 | 60 min |
| Season 1971 | Episode 24 | One Liverpool or Two? | 1971-10-18 | 60 min |
| Season 1971 | Episode 25 | Rutherford, Cavendish | 1971-10-25 | 60 min |
| Season 1971 | Episode 26 | The Fierce People | 1971-11-01 | 60 min |
| Season 1971 | Episode 27 | The Men Who Painted Caves | 1971-11-15 | 60 min |
| Season 1971 | Episode 28 | The Crab Nebula | 1971-11-22 | 60 min |
| Season 1971 | Episode 29 | Can Venice Survive? | 1971-11-29 | 60 min |
| Season 1971 | Episode 30 | Willingly to School | 1971-12-06 | 60 min |
| Season 1971 | Episode 31 | Periscope War | 1971-12-20 | 60 min |
| Season 1971 | Episode 32 | Patently Absurd | 1971-12-27 | 60 min |
| Season 1972 | Episode 1 | The Missing Link | 1972-01-03 | 60 min |
| Season 1972 | Episode 2 | Navajo - The Last Red Indians | 1972-01-10 | 60 min |
| Season 1972 | Episode 3 | How Much Do You Smell? | 1972-01-17 | 60 min |
| Season 1972 | Episode 4 | Parasite of Paradise | 1972-01-31 | 60 min |
| Season 1972 | Episode 5 | The Day It Rained Periwinkles | 1972-02-07 | 60 min |
| Season 1972 | Episode 6 | Are You Doing This for Me, Doctor? | 1972-02-14 | 60 min |
| Season 1972 | Episode 7 | How They Sold Doomsday | 1972-02-21 | 60 min |
| Season 1972 | Episode 8 | For Love or Money | 1972-02-28 | 60 min |
| Season 1972 | Episode 9 | Whales, Dolphins and Men | 1972-03-06 | 60 min |
| Season 1972 | Episode 10 | What is Race? | 1972-03-13 | 60 min |
| Season 1972 | Episode 11 | Man-Made Lakes in Africa | 1972-03-20 | 60 min |
| Season 1972 | Episode 12 | Survival in the Sahara | 1972-03-27 | 60 min |
| Season 1972 | Episode 13 | Mind Over Body | 1972-04-10 | 60 min |
| Season 1972 | Episode 14 | Out of Volcanoes | 1972-04-17 | 60 min |
| Season 1972 | Episode 15 | The Wizard Who Spat on the Floor | 1972-05-01 | 60 min |
| Season 1972 | Episode 16 | Rail Crash | 1972-05-08 | 60 min |
| Season 1972 | Episode 17 | Do You Dig National Parks? | 1972-05-22 | 60 min |
| Season 1972 | Episode 18 | Sorry I Opened My Mouth | 1972-06-12 | 60 min |
| Season 1972 | Episode 19 | The Way We Move | 1972-07-03 | 60 min |
| Season 1972 | Episode 20 | The Life That Lives on Man | 1972-07-10 | 60 min |
| Season 1972 | Episode 21 | Sex Can Be a Problem | 1972-07-24 | 60 min |
| Season 1972 | Episode 22 | The Surgery of Violence | 1972-07-31 | 60 min |
| Season 1972 | Episode 23 | Hospital, 1922 | 1972-10-12 | 60 min |
| Season 1972 | Episode 24 | When Polar Bears Swam in the Thames | 1972-10-19 | 60 min |
| Season 1972 | Episode 25 | The Making of the English Landscape | 1972-10-26 | 60 min |
| Season 1972 | Episode 26 | Shadows of Bliss | 1972-11-02 | 60 min |
| Season 1972 | Episode 27 | Billion Marsh | 1972-11-09 | 60 min |
| Season 1972 | Episode 28 | Do You Sincerely Want a Long Life? | 1972-11-16 | 60 min |
| Season 1972 | Episode 29 | The Making of a Natural History Film | 1972-11-23 | 60 min |
| Season 1972 | Episode 30 | Fire | 1972-11-30 | 60 min |
| Season 1972 | Episode 31 | Alaskan Pipe Dream | 1972-12-07 | 60 min |
| Season 1972 | Episode 32 | Their Life in Your Hands | 1972-12-21 | 60 min |
| Season 1972 | Episode 33 | Navigating Europe | 1972-12-28 | 60 min |
| Season 1973 | Episode 1 | Epidemic | 1973-01-04 | 60 min |
| Season 1973 | Episode 2 | Worlds in Collision | 1973-01-11 | 60 min |
| Season 1973 | Episode 3 | The Military Necessity | 1973-01-18 | 60 min |
| Season 1973 | Episode 4 | The Curtain of Silence | 1973-01-25 | 60 min |
| Season 1973 | Episode 5 | Crime Lab | 1973-02-01 | 60 min |
| Season 1973 | Episode 6 | When the Breeding Has to Stop | 1973-02-08 | 60 min |
| Season 1973 | Episode 7 | Science is Dead, Long Live Science | 1973-02-15 | 60 min |
| Season 1973 | Episode 8 | ...And Where Will the Children Play? | 1973-03-01 | 60 min |
| Season 1973 | Episode 9 | Acupuncture: A Chinese Puzzle | 1973-03-08 | 60 min |
| Season 1973 | Episode 10 | What Time is Your Body? | 1973-03-22 | 60 min |
| Season 1973 | Episode 11 | Survival of the Weakest | 1973-04-05 | 60 min |
| Season 1973 | Episode 12 | Red Sea Coral and the Crown of Thorns | 1973-04-12 | 60 min |
| Season 1973 | Episode 13 | Lumbered with Back-Ache! | 1973-04-26 | 60 min |
| Season 1973 | Episode 14 | Airport | 1973-05-03 | 60 min |
| Season 1973 | Episode 15 | Do You Remember the Memory Man? | 1973-05-17 | 60 min |
| Season 1973 | Episode 16 | What a Waste! | 1973-05-24 | 60 min |
| Season 1973 | Episode 17 | The Laws of the Land | 1973-06-07 | 60 min |
| Season 1973 | Episode 18 | Do We Really Need the Railways? | 1973-06-14 | 60 min |
| Season 1973 | Episode 19 | The Telly of Tomorrow | 1973-06-21 | 60 min |
| Season 1973 | Episode 20 | The Rat Man | 1973-06-28 | 60 min |
| Season 1973 | Episode 21 | How Does It Hurt? | 1973-07-05 | 60 min |
| Season 1973 | Episode 22 | A Scientist Looks at Religion | 1973-08-09 | 60 min |
| Season 1973 | Episode 23 | In Search of Konrad Lorenz | 1973-09-24 | 60 min |
| Season 1973 | Episode 24 | Stretch Up Tall | 1973-10-01 | 60 min |
| Season 1973 | Episode 25 | Gilding the Lily | 1973-10-08 | 60 min |
| Season 1973 | Episode 26 | Black Holes of Gravity | 1973-10-15 | 60 min |
| Season 1973 | Episode 27 | What's So Big About Us? | 1973-10-22 | 60 min |
| Season 1973 | Episode 28 | The Steadfast Tin Soldier | 1973-10-29 | 60 min |
| Season 1973 | Episode 29 | Carry on Smoking | 1973-11-05 | 60 min |
| Season 1973 | Episode 30 | Air Crash Detective | 1973-11-26 | 60 min |
| Season 1973 | Episode 31 | An Element of Mystery | 1973-12-03 | 60 min |
| Season 1973 | Episode 32 | Digging Up the Future | 1973-12-17 | 60 min |
| Season 1973 | Episode 33 | Kula, a Reason for Giving | 1973-12-24 | 60 min |
| Season 1974 | Episode 1 | A Matter of Self-Defense | 1974-01-07 | 60 min |
| Season 1974 | Episode 2 | Bird Brain - The Mystery of Bird Navigation | 1974-01-14 | 60 min |
| Season 1974 | Episode 3 | Never Too Late to Learn | 1974-01-21 | 60 min |
| Season 1974 | Episode 4 | The Great Fish Hunt | 1974-01-28 | 60 min |
| Season 1974 | Episode 5 | Pedal Power | 1974-02-04 | 60 min |
| Season 1974 | Episode 6 | The Writing on the Wall | 1974-02-11 | 60 min |
| Season 1974 | Episode 7 | Where Did the Colorado Go? | 1974-02-18 | 60 min |
| Season 1974 | Episode 8 | The Future Goes Boom | 1974-03-04 | 60 min |
| Season 1974 | Episode 9 | Fusion: The Energy Promise | 1974-03-11 | 60 min |
| Season 1974 | Episode 10 | The First Ten Years | 1974-04-22 | 60 min |
| Season 1974 | Episode 11 | This Yankee Dodge Beats Mesmerism Hollow | 1974-04-29 | 60 min |
| Season 1974 | Episode 12 | The Hunting of the Quark | 1974-05-06 | 60 min |
| Season 1974 | Episode 13 | A Noah's Ark for Europe | 1974-05-13 | 60 min |
| Season 1974 | Episode 14 | Bridges: When It Comes to the Crunch | 1974-06-03 | 60 min |
| Season 1974 | Episode 15 | Search for Life | 1974-06-10 | 60 min |
| Season 1974 | Episode 16 | The Secrets of Sleep | 1974-06-10 | 60 min |
| Season 1974 | Episode 17 | Who Needs Skills? | 1974-06-24 | 60 min |
| Season 1974 | Episode 18 | Hills of Promise | 1974-07-01 | 60 min |
| Season 1974 | Episode 19 | The Race for the Double Helix | 1974-07-08 | 60 min |
| Season 1974 | Episode 20 | The Immigrant Doctors | 1974-07-15 | 60 min |
| Season 1974 | Episode 21 | Mines, Minerals and Men | 1974-07-22 | 60 min |
| Season 1974 | Episode 22 | What Price Steak? | 1974-07-29 | 60 min |
| Season 1974 | Episode 23 | Listen and Be Loyal | 1974-08-05 | 60 min |
| Season 1974 | Episode 24 | Adam or Eve? | 1974-08-12 | 60 min |
| Season 1974 | Episode 25 | An Unholy Scramble | 1974-09-02 | 60 min |
| Season 1974 | Episode 26 | Do as You Are Told | 1974-10-28 | 60 min |
| Season 1974 | Episode 27 | The First Signs of Washoe | 1974-11-04 | 60 min |
| Season 1974 | Episode 28 | The Other Way | 1974-11-11 | 60 min |
| Season 1974 | Episode 29 | Joey | 1974-12-09 | 60 min |
| Season 1974 | Episode 30 | The Neglected Harvest | 1974-12-16 | 60 min |
| Season 1974 | Episode 31 | How on Earth Did They Do That? | 1974-12-23 | 60 min |
| Season 1974 | Episode 32 | The Lysenko Affair | 1974-12-30 | 60 min |
| Season 1975 | Episode 1 | The Cleanest Place in the World | 1975-01-06 | 60 min |
| Season 1975 | Episode 2 | The Killer Dust | 1975-01-20 | 60 min |
| Season 1975 | Episode 3 | A Time to Be Born | 1975-01-27 | 60 min |
| Season 1975 | Episode 4 | The Unsafe Sea | 1975-02-10 | 60 min |
| Season 1975 | Episode 5 | The Change of Life | 1975-02-17 | 60 min |
| Season 1975 | Episode 6 | Project Fido | 1975-02-24 | 60 min |
| Season 1975 | Episode 7 | The Long, Long Walkabout | 1975-04-07 | 60 min |
| Season 1975 | Episode 8 | The Overworked Miracle | 1975-04-14 | 60 min |
| Season 1975 | Episode 9 | Not the Cheapest, But the Best | 1975-04-21 | 60 min |
| Season 1975 | Episode 10 | A Spoonful of Roughage | 1975-04-28 | 60 min |
| Season 1975 | Episode 11 | Brain Poison | 1975-05-05 | 60 min |
| Season 1975 | Episode 12 | The Bulldog's Last Bark | 1975-05-12 | 60 min |
| Season 1975 | Episode 13 | Benjamin | 1975-05-19 | 60 min |
| Season 1975 | Episode 14 | The McMaster Experiment | 1975-06-02 | 60 min |
| Season 1975 | Episode 15 | The Glazed Outlook | 1975-06-09 | 60 min |
| Season 1975 | Episode 16 | The Three Chord Trick | 1975-06-16 | 60 min |
| Season 1975 | Episode 17 | The Cleanest Place in the World | 1975-06-23 | 60 min |
| Season 1975 | Episode 18 | Strange Sleep | 1975-06-30 | 60 min |
| Season 1975 | Episode 19 | The Greatest Advance Since the Wheel? | 1975-07-07 | 60 min |
| Season 1975 | Episode 20 | How Do You Read? | 1975-07-14 | 60 min |
| Season 1975 | Episode 21 | The Sickly Sea | 1975-07-21 | 60 min |
| Season 1975 | Episode 22 | Happy Catastrophe | 1975-07-28 | 60 min |
| Season 1975 | Episode 23 | To Die, to Live - The Survivors of Hiroshima | 1975-08-04 | 60 min |
| Season 1975 | Episode 24 | Cannabis | 1975-08-11 | 60 min |
| Season 1975 | Episode 25 | Meditation and the Mind | 1975-08-18 | 60 min |
| Season 1975 | Episode 26 | The Trobriand Experiment | 1975-12-29 | 60 min |
| Season 1976 | Episode 1 | The Transplant Experience | 1976-01-05 | 60 min |
| Season 1976 | Episode 2 | Intimate Strangers | 1976-01-12 | 60 min |
| Season 1976 | Episode 3 | A Fair Share of What Little We Have | 1976-01-19 | 60 min |
| Season 1976 | Episode 4 | The Incredible Machine | 1976-01-26 | 60 min |
| Season 1976 | Episode 5 | King Coal Revived | 1976-02-02 | 60 min |
| Season 1976 | Episode 6 | A Question of Trust | 1976-02-09 | 60 min |
| Season 1976 | Episode 7 | The Case of the Bermuda Triangle | 1976-02-16 | 60 min |
| Season 1976 | Episode 8 | The Lords of the Labyrinth | 1976-02-23 | 60 min |
| Season 1976 | Episode 9 | Inside the Shark | 1976-03-01 | 60 min |
| Season 1976 | Episode 10 | The Chemical Dream | 1976-03-08 | 60 min |
| Season 1976 | Episode 11 | The Edelin Affair | 1976-03-15 | 60 min |
| Season 1976 | Episode 12 | The World of Margaret Mead | 1976-03-22 | 60 min |
| Season 1976 | Episode 13 | The Pathway from Madness | 1976-03-29 | 60 min |
| Season 1976 | Episode 14 | Geronimo's Children | 1976-04-05 | 60 min |
| Season 1976 | Episode 15 | The Vision of the Blind | 1976-04-12 | 60 min |
| Season 1976 | Episode 16 | A Lesson for Teachers | 1976-04-26 | 60 min |
| Season 1976 | Episode 17 | Why Did Stuart Die? | 1976-05-03 | 60 min |
| Season 1976 | Episode 18 | The Planets | 1976-05-10 | 60 min |
| Season 1976 | Episode 19 | The Children of Peru | 1976-05-17 | 60 min |
| Season 1976 | Episode 20 | Dying | 1976-05-24 | 60 min |
| Season 1976 | Episode 21 | The Great British Drought | 1976-05-31 | 60 min |
| Season 1976 | Episode 22 | A Home Like Ours... A Story of Four Children | 1976-06-07 | 60 min |
| Season 1976 | Episode 23 | What's Wrong with the Sun? | 1976-06-14 | 60 min |
| Season 1976 | Episode 24 | The Bull's Eye War | 1976-10-25 | 60 min |
| Season 1976 | Episode 25 | The Hot-Blooded Dinosaurs | 1976-11-01 | 60 min |
| Season 1976 | Episode 26 | Billion Dollar Bubble | 1976-11-08 | 60 min |
| Season 1976 | Episode 27 | The Selfish Gene | 1976-11-15 | 60 min |
| Season 1976 | Episode 28 | A Child of Our Own | 1976-11-22 | 60 min |
| Season 1976 | Episode 29 | Secrets of a Coral Island | 1976-11-29 | 60 min |
| Season 1976 | Episode 30 | The Long Valley | 1976-12-06 | 60 min |
| Season 1976 | Episode 31 | Half-Way to 1984 | 1976-12-13 | 60 min |
| Season 1976 | Episode 32 | The Mystery of King Arthur and His Round Table | 1976-12-20 | 60 min |
| Season 1977 | Episode 1 | A Smile for a Crocodile | 1977-01-07 | 60 min |
| Season 1977 | Episode 2 | The Pill for the People | 1977-01-14 | 60 min |
| Season 1977 | Episode 3 | The Ape That Stood Up | 1977-01-21 | 60 min |
| Season 1977 | Episode 4 | The Human Animal | 1977-02-04 | 60 min |
| Season 1977 | Episode 5 | The Guinea Pig and the Law | 1977-02-18 | 60 min |
| Season 1977 | Episode 6 | Hunters of the Seal | 1977-02-25 | 60 min |
| Season 1977 | Episode 7 | The Red Planet | 1977-03-04 | 60 min |
| Season 1977 | Episode 8 | One of Nature's Hotels | 1977-03-11 | 60 min |
| Season 1977 | Episode 9 | Dawn of the Solar Age | 1977-03-18 | 60 min |
| Season 1977 | Episode 10 | Genetic Roulette | 1977-04-01 | 60 min |
| Season 1977 | Episode 11 | The Amazing Doctor Newton | 1977-07-15 | 60 min |
| Season 1977 | Episode 12 | The Trouble with Medicine | 1977-07-22 | 60 min |
| Season 1977 | Episode 13 | Silent Speech | 1977-07-29 | 60 min |
| Season 1977 | Episode 14 | The Green Machine | 1977-08-05 | 60 min |
| Season 1977 | Episode 15 | Horizon 2002 | 1977-08-26 | 60 min |
| Season 1977 | Episode 16 | The River That Came Clean | 1977-09-02 | 60 min |
| Season 1977 | Episode 17 | Blueprints in the Bloodstream | 1977-09-09 | 60 min |
| Season 1977 | Episode 18 | 40 Years of Murder | 1977-09-16 | 60 min |
| Season 1977 | Episode 19 | Darwin's Dream | 1977-09-23 | 60 min |
| Season 1977 | Episode 20 | The Cry for Help | 1977-09-30 | 60 min |
| Season 1977 | Episode 21 | The Sunspot Mystery | 1977-10-07 | 60 min |
| Season 1977 | Episode 22 | The Rhine's Revenge | 1977-10-21 | 60 min |
| Season 1977 | Episode 23 | Icarus' Children | 1977-12-02 | 60 min |
| Season 1977 | Episode 24 | The Healing Nightmare | 1977-12-09 | 60 min |
| Season 1977 | Episode 25 | The Great Wine Revolution | 1977-12-23 | 60 min |
| Season 1978 | Episode 1 | Living Machines | 1978-01-06 | 60 min |
| Season 1978 | Episode 2 | A Land for All Reasons | 1978-01-20 | 60 min |
| Season 1978 | Episode 3 | I Don't Want to Be a Burden | 1978-01-27 | 60 min |
| Season 1978 | Episode 4 | Zero G | 1978-02-03 | 60 min |
| Season 1978 | Episode 5 | The Message in the Rocks | 1978-02-17 | 60 min |
| Season 1978 | Episode 6 | The Eddystone Lights | 1978-02-24 | 60 min |
| Season 1978 | Episode 7 | Light of the 21st Century | 1978-03-10 | 60 min |
| Season 1978 | Episode 8 | The New Breadline | 1978-03-24 | 60 min |
| Season 1978 | Episode 9 | Now the Chips Are Down | 1978-03-31 | 60 min |
| Season 1978 | Episode 10 | Explosions in the Mind | 1978-07-14 | 60 min |
| Season 1978 | Episode 11 | One Small Step | 1978-07-21 | 60 min |
| Season 1978 | Episode 12 | The Tsetse Trap | 1978-07-28 | 60 min |
| Season 1978 | Episode 13 | A Whisper from Space | 1978-08-04 | 60 min |
| Season 1978 | Episode 14 | Prisoners of Hope | 1978-08-11 | 60 min |
| Season 1978 | Episode 15 | On a Different Track | 1978-08-18 | 60 min |
| Season 1978 | Episode 16 | Careering Into Science | 1978-08-25 | 60 min |
| Season 1978 | Episode 17 | Cashing In on the Ocean | 1978-09-01 | 60 min |
| Season 1978 | Episode 18 | Bags of Life | 1978-09-08 | 60 min |
| Season 1978 | Episode 19 | Innocent Slaughter | 1978-09-15 | 60 min |
| Season 1978 | Episode 20 | The Beersheva Experiment | 1978-11-03 | 60 min |
| Season 1978 | Episode 21 | Divers Do It Deeper | 1978-11-10 | 60 min |
| Season 1978 | Episode 22 | The Big Sleep | 1978-11-17 | 60 min |
| Season 1978 | Episode 23 | The Vital Spark | 1978-11-24 | 60 min |
| Season 1978 | Episode 24 | The Red Deer of Rhum | 1978-12-29 | 60 min |
| Season 1979 | Episode 1 | The Forever Fuel | 1979-02-26 | 60 min |
| Season 1979 | Episode 2 | In Search of Pegasus | 1979-03-05 | 60 min |
| Season 1979 | Episode 3 | The Keys of Paradise | 1979-03-12 | 60 min |
| Season 1979 | Episode 4 | Sweet Solutions | 1979-03-19 | 60 min |
| Season 1979 | Episode 5 | Bronze Age Blast-Off | 1979-03-26 | 60 min |
| Season 1979 | Episode 6 | The Real Bionic Man | 1979-04-02 | 60 min |
| Season 1979 | Episode 7 | A Mediterranean Prospect | 1979-04-09 | 60 min |
| Season 1979 | Episode 8 | Elements of Risk | 1979-04-23 | 60 min |
| Season 1979 | Episode 9 | Mr. Ludwig's Tropical Dreamland | 1979-04-30 | 60 min |
| Season 1979 | Episode 10 | Where Nothing Happens Twice | 1979-05-07 | 60 min |
| Season 1979 | Episode 11 | Journey Through the Human Body | 1979-05-14 | 60 min |
| Season 1979 | Episode 12 | The Fight to Be Male | 1979-05-21 | 60 min |
| Season 1979 | Episode 13 | The Robots Are Coming | 1979-05-28 | 60 min |
| Season 1979 | Episode 14 | Mexican Oil Dance | 1979-09-24 | 60 min |
| Season 1979 | Episode 15 | Tracks on the Oregon Trail | 1979-10-01 | 60 min |
| Season 1979 | Episode 16 | The Race to Reshape Cars | 1979-10-08 | 60 min |
| Season 1979 | Episode 17 | Dragnet for Diabetes | 1979-10-15 | 60 min |
| Season 1979 | Episode 18 | The Lost Waters of the Nile | 1979-10-22 | 60 min |
| Season 1979 | Episode 19 | Survival of the Fastest | 1979-10-29 | 60 min |
| Season 1979 | Episode 20 | A Touch of Sensitivity | 1979-11-05 | 60 min |
| Season 1979 | Episode 21 | A Treasury of Trees | 1979-11-12 | 60 min |
| Season 1979 | Episode 22 | Darkness Visible | 1979-11-19 | 60 min |
| Season 1979 | Episode 23 | Uranium Goes Critical | 1979-12-03 | 60 min |
| Season 1979 | Episode 24 | The Fat in the Fire | 1979-12-10 | 60 min |
| Season 1979 | Episode 25 | Decade | 1979-12-17 | 60 min |
| Season 1980 | Episode 1 | The Ghost of the Amoco Cadiz | 1980-01-14 | 60 min |
| Season 1980 | Episode 2 | You Are Old, Father William | 1980-01-21 | 60 min |
| Season 1980 | Episode 3 | Cleared for Takeoff | 1980-02-04 | 60 min |
| Season 1980 | Episode 4 | A Sporting Chance | 1980-02-11 | 60 min |
| Season 1980 | Episode 5 | Cancer Detectives of Lin Xian | 1980-02-18 | 60 min |
| Season 1980 | Episode 6 | The Big If... | 1980-02-25 | 60 min |
| Season 1980 | Episode 7 | Cash from Trash | 1980-03-03 | 60 min |
| Season 1980 | Episode 8 | Encounter with Jupiter | 1980-03-10 | 60 min |
| Season 1980 | Episode 9 | Portrait of a Poison | 1980-03-17 | 60 min |
| Season 1980 | Episode 10 | Magnet Earth | 1980-03-24 | 60 min |
| Season 1980 | Episode 11 | Goodbye Gutenberg | 1980-09-01 | 60 min |
| Season 1980 | Episode 12 | Invasion of the Virions | 1980-09-08 | 60 min |
| Season 1980 | Episode 13 | Beyond the Milky Way | 1980-09-15 | 60 min |
| Season 1980 | Episode 14 | Little Boxes | 1980-09-22 | 60 min |
| Season 1980 | Episode 15 | The Other Kenya | 1980-09-29 | 60 min |
| Season 1980 | Episode 16 | Moving Still | 1980-10-06 | 60 min |
| Season 1980 | Episode 17 | The Way Out | 1980-10-13 | 60 min |
| Season 1980 | Episode 18 | The Dead Sea Lives | 1980-10-20 | 60 min |
| Season 1980 | Episode 19 | Once in a Million Years | 1980-10-27 | 60 min |
| Season 1980 | Episode 20 | Smoker's Luck | 1980-11-03 | 60 min |
| Season 1980 | Episode 21 | Behind the Horoscope | 1980-11-10 | 60 min |
| Season 1980 | Episode 22 | The Mondragon Experiment | 1980-11-17 | 60 min |
| Season 1980 | Episode 23 | The Spike | 1980-11-24 | 60 min |
| Season 1980 | Episode 24 | The Slatemakers | 1980-12-01 | 60 min |
| Season 1980 | Episode 25 | Anatomy of a Volcano | 1980-12-15 | 60 min |
| Season 1981 | Episode 1 | Spend and Prosper | 1981-01-05 | 60 min |
| Season 1981 | Episode 2 | A Whole New Medicine | 1981-01-12 | 60 min |
| Season 1981 | Episode 3 | The Qualyub Project | 1981-01-19 | 60 min |
| Season 1981 | Episode 4 | No-One Will Take Me Seriously | 1981-01-26 | 60 min |
| Season 1981 | Episode 5 | Living with Dying | 1981-02-02 | 60 min |
| Season 1981 | Episode 6 | A is for Atom, B is for Bomb | 1981-02-09 | 60 min |
| Season 1981 | Episode 7 | Who Will Deliver Your Baby? | 1981-02-16 | 60 min |
| Season 1981 | Episode 8 | West of Bangalore | 1981-03-02 | 60 min |
| Season 1981 | Episode 9 | Gentlemen, Lift Your Skirts | 1981-03-09 | 60 min |
| Season 1981 | Episode 10 | Hello Universe! | 1981-03-16 | 60 min |
| Season 1981 | Episode 11 | Voices from Silent Hands | 1981-03-23 | 60 min |
| Season 1981 | Episode 12 | Did Darwin Get It Wrong? | 1981-03-30 | 60 min |
| Season 1981 | Episode 13 | East of Bombay | 1981-04-06 | 60 min |
| Season 1981 | Episode 14 | Resolution on Saturn - The Rings | 1981-04-11 | 60 min |
| Season 1981 | Episode 15 | Resolution on Saturn - The Moons | 1981-04-13 | 60 min |
| Season 1981 | Episode 16 | Heads I Win, Tails You Lose | 1981-09-28 | 60 min |
| Season 1981 | Episode 17 | The Hunt for the Legion Killer | 1981-10-05 | 60 min |
| Season 1981 | Episode 18 | Breaking in Children | 1981-10-12 | 60 min |
| Season 1981 | Episode 19 | The Grid | 1981-10-19 | 60 min |
| Season 1981 | Episode 20 | Butterflies or Barley? | 1981-10-26 | 60 min |
| Season 1981 | Episode 21 | Science for the People | 1981-11-02 | 60 min |
| Season 1981 | Episode 22 | The Race to Ruin | 1981-11-09 | 60 min |
| Season 1981 | Episode 23 | Death of the Dinosaurs | 1981-11-16 | 60 min |
| Season 1981 | Episode 24 | The Pleasure of Finding Things Out | 1981-11-23 | 60 min |
| Season 1981 | Episode 25 | The Cornucopia | 1981-11-30 | 60 min |
| Season 1981 | Episode 26 | The Race Against Time | 1981-12-07 | 60 min |
| Season 1981 | Episode 27 | Painting by Numbers | 1981-12-21 | 60 min |
| Season 1982 | Episode 1 | The Secret of the Snake | 1982-01-11 | 60 min |
| Season 1982 | Episode 2 | Finding a Voice | 1982-01-18 | 60 min |
| Season 1982 | Episode 3 | The Sea Beyond the Dunes | 1982-01-25 | 60 min |
| Season 1982 | Episode 4 | Whatever Happened to the Energy Crisis? | 1982-02-01 | 60 min |
| Season 1982 | Episode 5 | Notes of a Biology Watcher | 1982-02-08 | 60 min |
| Season 1982 | Episode 6 | The Cline Affair | 1982-02-15 | 60 min |
| Season 1982 | Episode 7 | The Million Murdering Death | 1982-02-22 | 60 min |
| Season 1982 | Episode 8 | Shots in the Dark | 1982-03-01 | 60 min |
| Season 1982 | Episode 9 | The Victims | 1982-03-08 | 60 min |
| Season 1982 | Episode 10 | The Future - Made in Japan? | 1982-03-15 | 60 min |
| Season 1982 | Episode 11 | The Private Face of Medicine | 1982-03-22 | 60 min |
| Season 1982 | Episode 12 | The Fatal Bargain | 1982-04-05 | 60 min |
| Season 1982 | Episode 13 | The Miracle of Life | 1982-10-11 | 60 min |
| Season 1982 | Episode 14 | The Case of the UFOs | 1982-10-18 | 60 min |
| Season 1982 | Episode 15 | A Killing Rain | 1982-10-25 | 60 min |
| Season 1982 | Episode 16 | Intimate Relations | 1982-11-01 | 60 min |
| Season 1982 | Episode 17 | The Scientist and the Baby | 1982-11-08 | 60 min |
| Season 1982 | Episode 18 | Brave New Babies? | 1982-11-15 | 60 min |
| Season 1982 | Episode 19 | The Professor of Surgery | 1982-11-29 | 60 min |
| Season 1982 | Episode 20 | The Chopper | 1982-12-06 | 60 min |
| Season 1982 | Episode 21 | The State of the Planet | 1982-12-13 | 60 min |
| Season 1982 | Episode 22 | The Mysterious Mr. Tesla | 1982-12-20 | 60 min |
| Season 1983 | Episode 1 | Sizewell Under Pressure | 1983-01-10 | 60 min |
| Season 1983 | Episode 2 | The Tropical Time Machine | 1983-01-17 | 60 min |
| Season 1983 | Episode 3 | The Geneva Event | 1983-01-24 | 60 min |
| Season 1983 | Episode 4 | How Much Can You Drink? | 1983-02-07 | 60 min |
| Season 1983 | Episode 5 | Talking Turtle | 1983-02-14 | 60 min |
| Season 1983 | Episode 6 | What Little Girls Are Made of | 1983-02-21 | 60 min |
| Season 1983 | Episode 7 | British Science - On the Wrong Track? | 1983-02-28 | 60 min |
| Season 1983 | Episode 8 | The Great Plains Massacre | 1983-03-07 | 60 min |
| Season 1983 | Episode 9 | Hard Rock | 1983-03-14 | 60 min |
| Season 1983 | Episode 10 | Better Mind the Computer | 1983-03-21 | 60 min |
| Season 1983 | Episode 11 | Madness on Trial | 1983-04-11 | 60 min |
| Season 1983 | Episode 12 | Sixty Minutes to Meltdown | 1983-04-18 | 60 min |
| Season 1983 | Episode 13 | Killer in the Village | 1983-04-25 | 60 min |
| Season 1983 | Episode 14 | The Case of ESP | 1983-09-26 | 60 min |
| Season 1983 | Episode 15 | The Artificial Heart | 1983-10-03 | 60 min |
| Season 1983 | Episode 16 | Dr. Priestley and the Breath of Life | 1983-10-10 | 60 min |
| Season 1983 | Episode 17 | Professor Hawking's Universe | 1983-10-17 | 60 min |
| Season 1983 | Episode 18 | The Cruel Choice | 1983-10-24 | 60 min |
| Season 1983 | Episode 19 | A Child's Guide to Languages | 1983-10-31 | 60 min |
| Season 1983 | Episode 20 | China's Child | 1983-11-07 | 60 min |
| Season 1983 | Episode 21 | The Earthquake Connection | 1983-11-14 | 60 min |
| Season 1983 | Episode 22 | Prisoner or Patient? | 1983-11-28 | 60 min |
| Season 1983 | Episode 23 | Cancer - The Pattern in the Genes | 1983-12-05 | 60 min |
| Season 1983 | Episode 24 | The Academy | 1983-12-12 | 60 min |
| Season 1984 | Episode 1 | The Intelligence Man | 1984-01-09 | 60 min |
| Season 1984 | Episode 2 | Microworld! | 1984-01-16 | 60 min |
| Season 1984 | Episode 3 | A New Green Revolution? | 1984-01-23 | 60 min |
| Season 1984 | Episode 4 | Spies in the Wires | 1984-01-30 | 60 min |
| Season 1984 | Episode 5 | Valley of the Inca | 1984-02-13 | 60 min |
| Season 1984 | Episode 6 | The Conquest of Parasites | 1984-02-27 | 60 min |
| Season 1984 | Episode 7 | Reflections on a River | 1984-03-05 | 60 min |
| Season 1984 | Episode 8 | A Normal Face | 1984-03-12 | 60 min |
| Season 1984 | Episode 9 | Prisoners of Incest | 1984-03-19 | 60 min |
| Season 1984 | Episode 10 | Signs of the Apes, Songs of the Whales | 1984-03-26 | 60 min |
| Season 1984 | Episode 11 | Professor Bonner and the Slime Moulds | 1984-04-09 | 60 min |
| Season 1984 | Episode 12 | The Mind of a Murderer - The Case of the Hillside Strangler | 1984-04-16 | 60 min |
| Season 1984 | Episode 13 | The Mind of a Murderer - The Mask of Madness | 1984-04-23 | 60 min |
| Season 1984 | Episode 14 | A Cruel Inheritance | 1984-04-30 | 60 min |
| Season 1984 | Episode 15 | The Malvern Link | 1984-05-07 | 60 min |
| Season 1984 | Episode 16 | Contented Cows and Other Animals | 1984-11-05 | 60 min |
| Season 1984 | Episode 17 | Picking Winners | 1984-11-12 | 60 min |
| Season 1984 | Episode 18 | The Brain Puzzle | 1984-11-19 | 60 min |
| Season 1984 | Episode 19 | Global Village | 1984-11-26 | 60 min |
| Season 1984 | Episode 20 | Ivan | 1984-12-03 | 60 min |
| Season 1984 | Episode 21 | A Mathematical Mystery Tour | 1984-12-10 | 60 min |
| Season 1984 | Episode 22 | Supercharged | 1984-12-17 | 60 min |
| Season 1985 | Episode 1 | Colourful Notions | 1985-01-07 | 60 min |
| Season 1985 | Episode 2 | A World of Their Own | 1985-01-14 | 60 min |
| Season 1985 | Episode 3 | Decoding Danebury | 1985-01-21 | 60 min |
| Season 1985 | Episode 4 | A Mission to Heal | 1985-01-28 | 60 min |
| Season 1985 | Episode 5 | The Mystery of the Left Hand | 1985-02-04 | 60 min |
| Season 1985 | Episode 6 | The Theatre of War | 1985-02-11 | 60 min |
| Season 1985 | Episode 7 | The Careful Predator | 1985-02-25 | 60 min |
| Season 1985 | Episode 8 | What Einstein Never Knew | 1985-03-04 | 60 min |
| Season 1985 | Episode 9 | Eurekaaargh! | 1985-03-11 | 60 min |
| Season 1985 | Episode 10 | Careering On | 1985-03-18 | 60 min |
| Season 1985 | Episode 11 | How to Film the Impossible | 1985-03-25 | 60 min |
| Season 1985 | Episode 12 | The Food Allergy War | 1985-04-01 | 60 min |
| Season 1985 | Episode 13 | The Goddess of the Earth | 1985-04-15 | 60 min |
| Season 1985 | Episode 14 | IRAS - The Supercooled Eye | 1985-04-22 | 60 min |
| Season 1985 | Episode 15 | A Prize Discovery | 1985-04-29 | 60 min |
| Season 1986 | Episode 1 | Are You a Racist? | 1986-01-06 | 60 min |
| Season 1986 | Episode 2 | Genesis | 1986-01-13 | 60 min |
| Season 1986 | Episode 3 | Bitter Cold | 1986-01-20 | 60 min |
| Season 1986 | Episode 4 | The Mould, the Myth and the Microbe | 1986-01-27 | 60 min |
| Season 1986 | Episode 5 | Outbreak: The Microbe Masters the Mould | 1986-02-03 | 60 min |
| Season 1986 | Episode 6 | The Wrong Stuff | 1986-02-10 | 60 min |
| Season 1986 | Episode 7 | Science...Fiction? | 1986-02-17 | 60 min |
| Season 1986 | Episode 8 | The Children of Eve | 1986-02-24 | 60 min |
| Season 1986 | Episode 9 | The New Face of Leprosy | 1986-03-03 | 60 min |
| Season 1986 | Episode 10 | Hi-Tech a la Francaise | 1986-03-10 | 60 min |
| Season 1986 | Episode 11 | In the Wake of HMS Sheffield | 1986-03-17 | 60 min |
| Season 1986 | Episode 12 | AIDS: A Strange and Deadly Virus | 1986-03-24 | 60 min |
| Season 1986 | Episode 13 | The Case of the Frozen Addicts | 1986-04-07 | 60 min |
| Season 1986 | Episode 14 | Nice Guys Finish First | 1986-04-14 | 60 min |
| Season 1986 | Episode 15 | The Men Who Bottled a Cow | 1986-04-21 | 60 min |
| Season 1986 | Episode 16 | Twice Five Plus the Wings of a Bird | 1986-04-28 | 60 min |
| Season 1986 | Episode 17 | What Makes an Animal Smart? | 1986-05-12 | 60 min |
| Season 1986 | Episode 18 | A Handful of Sugar with a Pinch of Salt | 1986-05-19 | 60 min |
| Season 1986 | Episode 19 | Uranus Encounter | 1986-05-26 | 60 min |
| Season 1986 | Episode 20 | Who Built Stonehenge? | 1986-06-09 | 60 min |
| Season 1986 | Episode 21 | Battered Baby - From Generation to Generation | 1986-06-16 | 60 min |
| Season 1986 | Episode 22 | Battered Baby - Breaking the Chain | 1986-06-23 | 60 min |
| Season 1986 | Episode 23 | Doctors to Be | 1986-06-30 | 60 min |
| Season 1987 | Episode 1 | The Twentyfive Hour Clock | 1987-01-05 | 60 min |
| Season 1987 | Episode 2 | The Search for the Disappeared | 1987-01-12 | 60 min |
| Season 1987 | Episode 3 | The Blind Watchmaker | 1987-01-19 | 60 min |
| Season 1987 | Episode 4 | Riding the Stack | 1987-01-26 | 60 min |
| Season 1987 | Episode 5 | Bruno Bettelheim: The Man Who Cared for Children | 1987-02-02 | 60 min |
| Season 1987 | Episode 6 | Bruno Bettelheim: A Sense of Surviving | 1987-02-09 | 60 min |
| Season 1987 | Episode 7 | Energy from Outer Space | 1987-02-16 | 60 min |
| Season 1987 | Episode 8 | The Return of the Osprey | 1987-02-23 | 60 min |
| Season 1987 | Episode 9 | Can AIDS Be Stopped | 1987-03-02 | 60 min |
| Season 1987 | Episode 10 | Police Stress: The John Wayne Syndrome | 1987-03-09 | 60 min |
| Season 1987 | Episode 11 | To Engineer is Human | 1987-03-16 | 60 min |
| Season 1987 | Episode 12 | The Magma Chamber | 1987-03-23 | 60 min |
| Season 1987 | Episode 13 | Broken Images | 1987-03-30 | 60 min |
| Season 1987 | Episode 14 | Trial Babies | 1987-04-06 | 60 min |
| Season 1987 | Episode 15 | After Chernobyl - Closer to Home | 1987-04-13 | 60 min |
| Season 1987 | Episode 16 | Life Story | 1987-04-27 | 60 min |
| Season 1987 | Episode 17 | Making Sex Pay | 1987-05-11 | 60 min |
| Season 1987 | Episode 18 | The Anthropic Principle | 1987-05-18 | 60 min |
| Season 1987 | Episode 19 | Aircrash: The Burning Issue | 1987-06-01 | 60 min |
| Season 1987 | Episode 20 | The Riddle of the Joints | 1987-06-08 | 60 min |
| Season 1987 | Episode 21 | To Catch a Falling Star | 1987-05-15 | 60 min |
| Season 1987 | Episode 22 | In the Light of New Information | 1987-06-22 | 60 min |
| Season 1987 | Episode 23 | Janice's Choice | 1987-06-29 | 60 min |
| Season 1988 | Episode 1 | The Transplanted Brain | 1988-01-04 | 60 min |
| Season 1988 | Episode 2 | Death of a Star | 1988-01-11 | 60 min |
| Season 1988 | Episode 3 | Playing with Madness | 1988-01-18 | 60 min |
| Season 1988 | Episode 4 | The Canal in the Jungle | 1988-01-25 | 60 min |
| Season 1988 | Episode 5 | Death of the Working Classes | 1988-02-01 | 60 min |
| Season 1988 | Episode 6 | The Greenhouse Effect | 1988-02-08 | 60 min |
| Season 1988 | Episode 7 | Struggling for Control | 1988-02-15 | 60 min |
| Season 1988 | Episode 8 | Thinking | 1988-02-22 | 60 min |
| Season 1988 | Episode 9 | Patients on Trial | 1988-02-29 | 60 min |
| Season 1988 | Episode 10 | Purple Warrior - Rules of Engagement | 1988-03-07 | 60 min |
| Season 1988 | Episode 11 | Purple Warrior - Limited War | 1988-03-14 | 60 min |
| Season 1988 | Episode 12 | The Heart of Another | 1988-03-28 | 60 min |
| Season 1988 | Episode 13 | Easter Island - The Secrets | 1988-04-11 | 60 min |
| Season 1988 | Episode 14 | Easter Island - The Story | 1988-04-18 | 60 min |
| Season 1988 | Episode 15 | Doctors to Be - Trial by Interview | 1988-04-23 | 60 min |
| Season 1988 | Episode 16 | Doctors to Be - The Knowledge | 1988-04-24 | 60 min |
| Season 1988 | Episode 17 | Doctors to Be - Welcome to the Real World | 1988-04-25 | 60 min |
| Season 1988 | Episode 18 | Cancer at Bay | 1988-05-02 | 60 min |
| Season 1988 | Episode 19 | Traces of Murder | 1988-05-09 | 60 min |
| Season 1988 | Episode 20 | The Hope of Progress | 1988-05-16 | 60 min |
| Season 1988 | Episode 21 | A Newsday Revolution | 1988-05-23 | 60 min |
| Season 1988 | Episode 22 | A Good Test? | 1988-06-06 | 60 min |
| Season 1988 | Episode 23 | Superconductor - The Race for the Prize | 1988-06-13 | 60 min |
| Season 1988 | Episode 24 | Believe Me | 1988-06-27 | 60 min |
| Season 1988 | Episode 25 | The Quest for Tannu Tuva | 1988-07-04 | 60 min |
| Season 1989 | Episode 1 | The Book of Man | 1989-01-09 | 60 min |
| Season 1989 | Episode 2 | The Poison That Waits | 1989-01-16 | 60 min |
| Season 1989 | Episode 3 | Perils of the Deep | 1989-01-23 | 60 min |
| Season 1989 | Episode 4 | Smart Weapons | 1989-01-30 | 60 min |
| Season 1989 | Episode 5 | Wasting the Alps | 1989-02-06 | 60 min |
| Season 1989 | Episode 6 | In the Last Resort | 1989-02-13 | 60 min |
| Season 1989 | Episode 7 | Gaze in Wonder | 1989-02-20 | 60 min |
| Season 1989 | Episode 8 | In My Lifetime? | 1989-02-27 | 60 min |
| Season 1989 | Episode 9 | Concerto | 1989-03-06 | 60 min |
| Season 1989 | Episode 10 | Black Schizophrenia | 1989-03-13 | 60 min |
| Season 1989 | Episode 11 | Trial in the Jungle | 1989-03-20 | 60 min |
| Season 1989 | Episode 12 | Who Will Make Me Better? | 1989-04-03 | 60 min |
| Season 1989 | Episode 13 | A Wonderful Life | 1989-04-17 | 60 min |
| Season 1989 | Episode 14 | Why Buildings Make You Sick | 1989-04-24 | 60 min |
| Season 1989 | Episode 15 | Jubilee | 1989-05-08 | 60 min |
| Season 1989 | Episode 16 | Crash | 1989-05-15 | 60 min |
| Season 1989 | Episode 17 | The New Sixth Sense | 1989-05-22 | 60 min |
| Season 1989 | Episode 18 | Clive Sinclair: The Anatomy of an Inventor | 1989-06-12 | 60 min |
| Season 1989 | Episode 19 | Newpin: A Lifetime | 1989-06-19 | 60 min |
| Season 1989 | Episode 20 | Time of Darkness | 1989-06-26 | 60 min |
| Season 1990 | Episode 1 | Oil Spill | 1990-01-08 | 60 min |
| Season 1990 | Episode 2 | Medicine 2000 | 1990-01-15 | 60 min |
| Season 1990 | Episode 3 | Food Irradiation: Would You Buy It? | 1990-01-22 | 60 min |
| Season 1990 | Episode 4 | From Earth to Miranda | 1990-01-29 | 60 min |
| Season 1990 | Episode 5 | Encounter with Neptune | 1990-02-05 | 60 min |
| Season 1990 | Episode 6 | Guess What's Coming to Dinner? | 1990-02-12 | 60 min |
| Season 1990 | Episode 7 | The First 14 Days | 1990-02-19 | 60 min |
| Season 1990 | Episode 8 | The 10,000 Year Test | 1990-03-05 | 60 min |
| Season 1990 | Episode 9 | Hurricane! | 1990-03-12 | 60 min |
| Season 1990 | Episode 10 | The Britannic Greenhouse | 1990-03-19 | 60 min |
| Season 1990 | Episode 11 | Cold Fusion | 1990-03-26 | 60 min |
| Season 1990 | Episode 12 | The Quake of '89 - The Final Warning? | 1990-04-02 | 60 min |
| Season 1990 | Episode 13 | The Sharpest Show of the Universe | 1990-04-09 | 60 min |
| Season 1990 | Episode 14 | The Company of Ants and Bees | 1990-04-23 | 60 min |
| Season 1990 | Episode 15 | The Intelligent Island | 1990-04-30 | 60 min |
| Season 1990 | Episode 16 | Legacy of a Volcano | 1990-05-14 | 60 min |
| Season 1990 | Episode 17 | Do Cows Make You Mad? | 1990-05-21 | 60 min |
| Season 1990 | Episode 18 | The Child Mothers | 1990-06-04 | 60 min |
| Season 1990 | Episode 19 | Signs of Life | 1990-06-11 | 60 min |
| Season 1990 | Episode 20 | AIDS: A Quest for a Cure | 1990-06-25 | 60 min |
| Season 1991 | Episode 1 | Sudden Death | 1991-01-07 | 60 min |
| Season 1991 | Episode 2 | Keen as Mustard | 1991-01-14 | 60 min |
| Season 1991 | Episode 3 | Smokers Can Harm Your Health | 1991-01-21 | 60 min |
| Season 1991 | Episode 4 | Coming In from the Cold | 1991-01-28 | 60 min |
| Season 1991 | Episode 5 | Small Problems with the Mirror | 1991-02-04 | 60 min |
| Season 1991 | Episode 6 | Two Weeks to Save the Earth | 1991-02-10 | 60 min |
| Season 1991 | Episode 7 | California Dreaming | 1991-02-11 | 60 min |
| Season 1991 | Episode 8 | The Day the Earth Melted | 1991-02-25 | 60 min |
| Season 1991 | Episode 9 | The Curse of Karash | 1991-02-25 | 60 min |
| Season 1991 | Episode 10 | Playing at Noah | 1991-03-04 | 60 min |
| Season 1991 | Episode 11 | Cashing in on Paradise | 1991-03-11 | 60 min |
| Season 1991 | Episode 12 | The Terracotta Time Machine | 1991-03-18 | 60 min |
| Season 1991 | Episode 13 | Measuring the Roof of the World | 1991-03-25 | 60 min |
| Season 1991 | Episode 14 | The First Americans | 1991-04-15 | 60 min |
| Season 1991 | Episode 15 | Inside Chernobyl's Sarcophagus | 1991-04-22 | 60 min |
| Season 1991 | Episode 16 | Colonising Cyberspace | 1991-04-29 | 60 min |
| Season 1991 | Episode 17 | Emerging Viruses | 1991-05-13 | 60 min |
| Season 1991 | Episode 18 | Camelford - A Bitter Aftertaste | 1991-05-20 | 60 min |
| Season 1991 | Episode 19 | Of Big Bangs, Stick Men and Galactic Holes | 1991-06-03 | 60 min |
| Season 1991 | Episode 20 | Food for Thought | 1991-06-10 | 60 min |
| Season 1991 | Episode 21 | The Long Road to the West | 1991-06-17 | 60 min |
| Season 1991 | Episode 22 | Half Hearted About Semi-Skimmed | 1991-06-24 | 60 min |
| Season 1991 | Episode 23 | T-Rex Exposed | 1991-07-01 | 60 min |
| Season 1992 | Episode 1 | The Shadow of Breast Cancer | 1992-01-06 | 60 min |
| Season 1992 | Episode 2 | Pest Wars | 1992-01-13 | 60 min |
| Season 1992 | Episode 3 | Molecules with Sunglasses | 1992-01-20 | 60 min |
| Season 1992 | Episode 4 | In Search of the Noble Savage | 1992-01-27 | 60 min |
| Season 1992 | Episode 5 | Malaria: Battle of the Merozoites | 1992-02-03 | 60 min |
| Season 1992 | Episode 6 | The Black Sun | 1992-02-17 | 60 min |
| Season 1992 | Episode 7 | Hitler's Bomb | 1992-02-24 | 60 min |
| Season 1992 | Episode 8 | An Expensive Theology | 1992-03-02 | 60 min |
| Season 1992 | Episode 9 | The Strange Life and Death of Dr. Turing | 1992-03-09 | 60 min |
| Season 1992 | Episode 10 | Hot Jam in the Doughnut | 1992-03-16 | 60 min |
| Season 1992 | Episode 11 | A Diet for a Lifetime | 1992-03-30 | 60 min |
| Season 1992 | Episode 12 | Before Babel | 1992-04-06 | 60 min |
| Season 1992 | Episode 13 | The Man Who Moved the Mountains | 1992-04-13 | 60 min |
| Season 1992 | Episode 14 | Iceman | 1992-04-27 | 60 min |
| Season 1992 | Episode 15 | Taking the Credit | 1992-05-11 | 60 min |
| Season 1992 | Episode 16 | Fast Life in the Food Chain | 1992-05-18 | 60 min |
| Season 1992 | Episode 17 | Dodging Doomsday | 1992-06-01 | 60 min |
| Season 1992 | Episode 18 | A Question of Sport... | 1992-06-08 | 60 min |
| Season 1992 | Episode 19 | Genes R Us | 1992-06-15 | 60 min |
| Season 1993 | Episode 1 | Awakening the Frozen Addicts | 1993-01-04 | 60 min |
| Season 1993 | Episode 2 | Cheating Time | 1993-01-11 | 60 min |
| Season 1993 | Episode 3 | TB - The Forgotten Plague | 1993-01-18 | 60 min |
| Season 1993 | Episode 4 | No Ordinary Genius (1) | 1993-01-25 | 60 min |
| Season 1993 | Episode 5 | No Ordinary Genius (2) | 1993-02-01 | 60 min |
| Season 1993 | Episode 6 | Mars Alive | 1993-02-08 | 60 min |
| Season 1993 | Episode 7 | Suggers, Fruggers and Data-Muggers | 1993-02-15 | 60 min |
| Season 1993 | Episode 8 | The Pyramid Builders | 1993-02-22 | 60 min |
| Season 1993 | Episode 9 | Here Be Monsters | 1993-03-01 | 60 min |
| Season 1993 | Episode 10 | Iceman (Update) | 1993-03-08 | 60 min |
| Season 1993 | Episode 11 | Whatever Happened to Star Wars | 1993-03-15 | 60 min |
| Season 1993 | Episode 12 | Resurrecting the Dead Sea Scrolls | 1993-03-22 | 60 min |
| Season 1993 | Episode 13 | Dante Goes to Hell | 1993-03-29 | 60 min |
| Season 1993 | Episode 14 | Ghosts in the Dinosaur Graveyard | 1993-04-05 | 60 min |
| Season 1993 | Episode 15 | The New Alchemists | 1993-04-19 | 60 min |
| Season 1993 | Episode 16 | Allergic to the 20th Century | 1993-05-10 | 60 min |
| Season 1993 | Episode 17 | Wot U Looking At? | 1993-05-24 | 60 min |
| Season 1993 | Episode 18 | The Electronic Frontier | 1993-06-07 | 60 min |
| Season 1993 | Episode 19 | A Vital Poison | 1993-06-14 | 60 min |
| Season 1993 | Episode 20 | Chimp Talk | 1993-06-21 | 60 min |
| Season 1993 | Episode 21 | Life is Impossible | 1993-06-28 | 60 min |
| Season 1994 | Episode 1 | Small Arms, Soft Targets | 1994-01-10 | 60 min |
| Season 1994 | Episode 2 | The Last Mammoth | 1994-01-17 | 60 min |
| Season 1994 | Episode 3 | The Man Who Made Up His Mind | 1994-01-24 | 60 min |
| Season 1994 | Episode 4 | Genie | 1994-01-31 | 60 min |
| Season 1994 | Episode 5 | Death Wish - The Untold Story | 1994-02-07 | 60 min |
| Season 1994 | Episode 6 | Air Crash - The Deadly Puzzle | 1994-02-14 | 60 min |
| Season 1994 | Episode 7 | Hunt for the Doomsday Asteroid | 1994-02-28 | 60 min |
| Season 1994 | Episode 8 | Hubble Vision | 1994-03-07 | 60 min |
| Season 1994 | Episode 9 | Some Like It Hot | 1994-03-14 | 60 min |
| Season 1994 | Episode 10 | Too Close to the Sun | 1994-03-21 | 60 min |
| Season 1994 | Episode 11 | Sir Walter's Journey | 1994-03-28 | 60 min |
| Season 1994 | Episode 12 | After the Flood | 1994-04-18 | 60 min |
| Season 1994 | Episode 13 | Against the Clock | 1994-04-25 | 60 min |
| Season 1994 | Episode 14 | The Blueprints of Genocide | 1994-05-09 | 60 min |
| Season 1994 | Episode 15 | Ulcer Wars | 1994-05-16 | 60 min |
| Season 1994 | Episode 16 | Deaf Whale, Dead Whale | 1994-11-07 | 60 min |
| Season 1994 | Episode 17 | Whispers of Creation | 1994-11-14 | 60 min |
| Season 1994 | Episode 18 | The Predator | 1994-11-21 | 60 min |
| Season 1994 | Episode 19 | Close Encounters | 1994-11-28 | 60 min |
| Season 1994 | Episode 20 | Orange Sherbet Kisses | 1994-12-12 | 60 min |
| Season 1994 | Episode 21 | Designer Wines | 1994-12-19 | 60 min |
| Season 1995 | Episode 1 | Tibet - The Ice Mother | 1995-01-09 | 60 min |
| Season 1995 | Episode 2 | Russia's Deep Secrets | 1995-01-16 | 60 min |
| Season 1995 | Episode 3 | Bones of Contention | 1995-01-23 | 60 min |
| Season 1995 | Episode 4 | Siamese Twins | 1995-01-30 | 60 min |
| Season 1995 | Episode 5 | Too Big Too Soon? | 1992-02-20 | 60 min |
| Season 1995 | Episode 6 | Farewell Fantastic Venus | 1995-02-27 | 60 min |
| Season 1995 | Episode 7 | Exodus | 1995-03-06 | 60 min |
| Season 1995 | Episode 8 | The Betrayers | 1995-03-13 | 60 min |
| Season 1995 | Episode 9 | Icon Earth | 1995-03-20 | 60 min |
| Season 1995 | Episode 10 | The I-Bomb | 1995-03-27 | 60 min |
| Season 1995 | Episode 11 | Foetal Attraction | 1995-04-03 | 60 min |
| Season 1995 | Episode 12 | Cracks in the Crust | 1995-04-10 | 60 min |
| Season 1995 | Episode 13 | Hearing Voices | 1995-04-24 | 60 min |
| Season 1995 | Episode 14 | Liar | 1995-10-30 | 60 min |
| Season 1995 | Episode 15 | The Human Laboratory | 1995-11-06 | 60 min |
| Season 1995 | Episode 16 | Nanotopia | 1995-11-13 | 60 min |
| Season 1995 | Episode 17 | Hunt for the Doomsday Asteroid (Update) | 1995-11-20 | 60 min |
| Season 1995 | Episode 18 | A Code in the Nose | 1995-11-27 | 60 min |
| Season 1995 | Episode 19 | AIDS: Behind Closed Doors | 1995-12-04 | 60 min |
| Season 1995 | Episode 20 | The Runaway Mountain | 1995-12-11 | 60 min |
| Season 1996 | Episode 1 | The Butchers of Boxgrove | 1996-01-08 | 60 min |
| Season 1996 | Episode 2 | Fermat's Last Theorem | 1996-01-15 | 60 min |
| Season 1996 | Episode 3 | A Miracle for Cancer ? | 1996-01-22 | 60 min |
| Season 1996 | Episode 4 | Nature's Numbers | 1996-01-29 | 60 min |
| Season 1996 | Episode 5 | The Gene Race | 1996-02-05 | 60 min |
| Season 1996 | Episode 6 | Masters of the Ionosphere | 1996-02-12 | 60 min |
| Season 1996 | Episode 7 | Assault on the Male (revisited) | 1996-02-26 | 60 min |
| Season 1996 | Episode 8 | Death by Design | 1996-03-04 | 60 min |
| Season 1996 | Episode 9 | The Planet Hunters | 1996-03-11 | 60 min |
| Season 1996 | Episode 10 | Inside Chernobyl's Sarcophagus (Update) | 1996-03-25 | 60 min |
| Season 1996 | Episode 11 | Fallout from Chernobyl | 1996-04-01 | 60 min |
| Season 1996 | Episode 12 | TV is Dead, Long Live TV | 1996-11-04 | 60 min |
| Season 1996 | Episode 13 | Aliens from Mars | 1996-11-11 | 60 min |
| Season 1996 | Episode 14 | Living Death | 1996-11-25 | 60 min |
| Season 1996 | Episode 15 | The Time Lords | 1996-12-02 | 60 min |
| Season 1996 | Episode 16 | Noah's Flood | 1996-12-16 | 60 min |
| Season 1997 | Episode 1 | Psychedelic Science | 1997-02-27 | 60 min |
| Season 1997 | Episode 2 | Fat Cats, Thin Mice | 1997-03-06 | 60 min |
| Season 1997 | Episode 3 | Shipwreck | 1997-03-13 | 60 min |
| Season 1997 | Episode 4 | Genius of the Jet | 1997-03-20 | 60 min |
| Season 1997 | Episode 5 | Smallpox on Death Row | 1997-03-27 | 60 min |
| Season 1997 | Episode 6 | Silent Children, New Language | 1997-04-03 | 60 min |
| Season 1997 | Episode 7 | Turned On by Danger | 1997-04-17 | 60 min |
| Season 1997 | Episode 8 | A Perfect Oil Spill | 1997-04-24 | 60 min |
| Season 1997 | Episode 9 | The Great Balloon Race | 1997-05-01 | 60 min |
| Season 1997 | Episode 10 | Crater of Death | 1997-09-11 | 60 min |
| Season 1997 | Episode 11 | Mind Over Body | 1997-09-18 | 60 min |
| Season 1997 | Episode 12 | Out of Asia | 1997-09-25 | 60 min |
| Season 1997 | Episode 13 | The Virus That Cures | 1997-10-09 | 60 min |
| Season 1997 | Episode 14 | The Man Who Lost His Body | 1997-10-16 | 60 min |
| Season 1997 | Episode 15 | Dawn of the Clone Age | 1997-10-23 | 60 min |
| Season 1998 | Episode 1 | Saddam's Secrets | 1998-02-19 | 60 min |
| Season 1998 | Episode 2 | Dr Miller and the Islanders | 1998-02-26 | 60 min |
| Season 1998 | Episode 3 | The Rainmaker | 1998-03-05 | 60 min |
| Season 1998 | Episode 4 | Hopeful Monsters | 1998-03-19 | 60 min |
| Season 1998 | Episode 5 | The Limits to Birth | 1998-03-26 | 60 min |
| Season 1998 | Episode 6 | Overkill | 1998-04-02 | 60 min |
| Season 1998 | Episode 7 | The Curse of Vesuvius | 1998-04-16 | 60 min |
| Season 1998 | Episode 8 | Mir Mortals | 1998-04-23 | 60 min |
| Season 1998 | Episode 9 | The Computer That Ate Hollywood | 1998-04-30 | 60 min |
| Season 1998 | Episode 10 | Magic Bullet | 1998-05-07 | 60 min |
| Season 1998 | Episode 11 | The Gulf War Jigsaw | 1998-05-14 | 60 min |
| Season 1998 | Episode 12 | Sexual Chemistry | 1998-09-10 | 60 min |
| Season 1998 | Episode 13 | Chimps on Death Row | 1998-10-01 | 60 min |
| Season 1998 | Episode 14 | Dinosaurs in Your Garden | 1998-10-08 | 60 min |
| Season 1998 | Episode 15 | Mosquito! | 1998-10-15 | 60 min |
| Season 1998 | Episode 16 | The Life and Times of Life and Time | 1998-10-22 | 60 min |
| Season 1998 | Episode 17 | Thalidomide: A Necessary Evil | 1998-10-29 | 60 min |
| Season 1998 | Episode 18 | Beyond a Joke | 1998-11-05 | 60 min |
| Season 1999 | Episode 1 | From Here to Infinity | 1999-01-28 | 60 min |
| Season 1999 | Episode 2 | Pandemic | 1999-02-04 | 60 min |
| Season 1999 | Episode 3 | Elephants or Ivory | 1999-02-11 | 60 min |
| Season 1999 | Episode 4 | Electric Heart | 1999-02-18 | 60 min |
| Season 1999 | Episode 5 | Sudden Death | 1999-02-25 | 60 min |
| Season 1999 | Episode 6 | New Star in Orbit | 1999-03-11 | 60 min |
| Season 1999 | Episode 7 | New Asteroid Danger | 1999-03-18 | 60 min |
| Season 1999 | Episode 8 | Skeleton Key | 1999-03-25 | 60 min |
| Season 1999 | Episode 9 | Wings of Angels | 1999-08-01 | 60 min |
| Season 1999 | Episode 10 | Mistaken Identity | 1999-11-11 | 60 min |
| Season 1999 | Episode 11 | Volcanoes of the Deep | 1999-11-18 | 60 min |
| Season 1999 | Episode 12 | Anatomy of an Avalanche | 1999-11-25 | 60 min |
| Season 1999 | Episode 13 | The Midas Formula | 1999-12-02 | 60 min |
| Season 2000 | Episode 1 | Breath of Life | 2000-01-13 | 60 min |
| Season 2000 | Episode 2 | Lost City of Nasca | 2000-01-20 | 60 min |
| Season 2000 | Episode 3 | The Diamond Makers | 2000-01-27 | 60 min |
| Season 2000 | Episode 4 | Supervolcanoes | 2000-02-03 | 60 min |
| Season 2000 | Episode 5 | Miracle in Orbit | 2000-02-10 | 60 min |
| Season 2000 | Episode 6 | Complete Obsession - Body Dysmorphia | 2000-02-17 | 60 min |
| Season 2000 | Episode 7 | Is GM Safe? | 2000-03-09 | 60 min |
| Season 2000 | Episode 8 | Planet Hunters | 2000-03-16 | 60 min |
| Season 2000 | Episode 9 | Constant Craving: The Science of Addiction | 2000-03-30 | 60 min |
| Season 2000 | Episode 10 | Moon Children | 2000-04-04 | 60 min |
| Season 2000 | Episode 11 | Mega-Tsunami: Wave of Destruction | 2000-10-12 | 60 min |
| Season 2000 | Episode 12 | Conjoined Twins | 2000-10-19 | 60 min |
| Season 2000 | Episode 13 | The Lost World of Lake Vostok | 2000-10-26 | 60 min |
| Season 2000 | Episode 14 | Vanished: The Plane That Disappeared | 2000-11-02 | 60 min |
| Season 2000 | Episode 15 | The Secret Treasures of Zeugma | 2000-11-09 | 60 min |
| Season 2000 | Episode 16 | The Valley of Life or Death | 2000-11-16 | 60 min |
| Season 2000 | Episode 17 | Extreme Dinosaurs | 2000-11-23 | 60 min |
| Season 2000 | Episode 18 | Supermassive Black Holes | 2000-11-30 | 60 min |
| Season 2000 | Episode 19 | The Boy Who Was Turned Into a Girl | 2000-12-07 | 60 min |
| Season 2000 | Episode 20 | Atlantis Reborn Again | 2000-12-14 | 60 min |
| Season 2001 | Episode 1 | The Mystery of the Miami Circle | 2001-01-25 | 60 min |
| Season 2001 | Episode 2 | The Missing Link | 2001-02-01 | 60 min |
| Season 2001 | Episode 3 | Killer Algae | 2001-02-08 | 60 min |
| Season 2001 | Episode 4 | Ecstasy and Agony | 2001-02-15 | 60 min |
| Season 2001 | Episode 5 | Snowball Earth | 2001-02-22 | 60 min |
| Season 2001 | Episode 6 | Taming the Problem Child | 2001-03-06 | 60 min |
| Season 2001 | Episode 7 | The Mystery of the Persian Mummy | 2001-09-20 | 60 min |
| Season 2001 | Episode 8 | The Ape That Took Over the World | 2001-10-04 | 60 min |
| Season 2001 | Episode 9 | Life Blood | 2001-10-11 | 60 min |
| Season 2001 | Episode 10 | The Death Star | 2001-10-18 | 60 min |
| Season 2001 | Episode 11 | Cloning the First Human | 2001-10-25 | 60 min |
| Season 2002 | Episode 1 | Helike - The Real Atlantis | 2002-01-10 | 60 min |
| Season 2002 | Episode 2 | Volcano Hell | 2002-01-17 | 60 min |
| Season 2002 | Episode 3 | Fatbusters | 2002-01-24 | 60 min |
| Season 2002 | Episode 4 | The Lost Pyramids of Caral | 2002-01-31 | 60 min |
| Season 2002 | Episode 5 | Death of the Iceman | 2002-02-07 | 60 min |
| Season 2002 | Episode 6 | Parallel Universes | 2002-02-14 | 60 min |
| Season 2002 | Episode 7 | The Dinosaur That Fooled the World | 2002-02-21 | 60 min |
| Season 2002 | Episode 8 | The Fall of the World Trade Center | 2002-03-07 | 60 min |
| Season 2002 | Episode 9 | Archimedes' Secret | 2002-03-14 | 60 min |
| Season 2002 | Episode 10 | The Mystery of the Jurassic | 2002-03-28 | 60 min |
| Season 2002 | Episode 11 | Killer Lakes | 2002-04-04 | 60 min |
| Season 2002 | Episode 12 | The A6 Murder | 2002-05-16 | 60 min |
| Season 2002 | Episode 13 | The England Patient | 2002-05-23 | 60 min |
| Season 2002 | Episode 14 | Freak Wave | 2002-11-14 | 60 min |
| Season 2002 | Episode 15 | Stone Age Columbus | 2002-11-21 | 60 min |
| Season 2002 | Episode 16 | Homeopathy: The Test | 2002-11-26 | 60 min |
| Season 2002 | Episode 17 | The Day the Earth Nearly Died | 2002-12-05 | 60 min |
| Season 2002 | Episode 18 | The Secret of El Dorado | 2002-12-19 | 60 min |
| Season 2003 | Episode 1 | The Mystery of Easter Island | 2003-01-09 | 60 min |
| Season 2003 | Episode 2 | Living Nightmare | 2003-01-16 | 60 min |
| Season 2003 | Episode 3 | Averting Armageddon | 2003-01-23 | 60 min |
| Season 2003 | Episode 4 | Dirty Bomb | 2003-01-30 | 60 min |
| Season 2003 | Episode 5 | Sexual Chemistry (Update) | 2003-02-13 | 60 min |
| Season 2003 | Episode 6 | The Day We Learned to Think | 2003-02-20 | 60 min |
| Season 2003 | Episode 7 | Trial and Error | 2003-02-27 | 60 min |
| Season 2003 | Episode 8 | Earthquake Storms | 2003-03-06 | 60 min |
| Season 2003 | Episode 9 | Life on Mars (Update) | 2003-03-27 | 60 min |
| Season 2003 | Episode 10 | The Secret Life of Caves | 2003-04-03 | 60 min |
| Season 2003 | Episode 11 | God on the Brain | 2003-04-17 | 60 min |
| Season 2003 | Episode 12 | Flight 587 | 2003-05-08 | 60 min |
| Season 2003 | Episode 13 | SARS: The True Story | 2003-05-29 | 60 min |
| Season 2003 | Episode 14 | The Big Chill | 2003-11-13 | 60 min |
| Season 2003 | Episode 15 | The Bible Code | 2003-11-20 | 60 min |
| Season 2003 | Episode 16 | Last Flight of the Columbia | 2003-11-27 | 60 min |
| Season 2003 | Episode 17 | The Hunt for an AIDS Vaccine | 2003-12-04 | 60 min |
| Season 2003 | Episode 18 | Percy Pilcher's Flying Machine | 2003-12-11 | 60 min |
| Season 2003 | Episode 19 | Time Trip | 2003-12-18 | 60 min |
| Season 2004 | Episode 1 | The Demonic Ape | 2004-01-08 | 60 min |
| Season 2004 | Episode 2 | The Moscow Theatre Siege | 2004-01-15 | 60 min |
| Season 2004 | Episode 3 | The Atkins Diet | 2004-01-22 | 60 min |
| Season 2004 | Episode 4 | Secrets of the Star Disc | 2004-01-29 | 60 min |
| Season 2004 | Episode 5 | The Dark Secret of Hendrik Schön | 2004-02-05 | 60 min |
| Season 2004 | Episode 6 | Thalidomide - A Second Chance? | 2004-02-12 | 60 min |
| Season 2004 | Episode 7 | Diamond Labs | 2004-03-04 | 60 min |
| Season 2004 | Episode 8 | T-Rex - Warrior or Wimp? | 2004-03-11 | 60 min |
| Season 2004 | Episode 9 | Project Poltergeist | 2004-03-18 | 60 min |
| Season 2004 | Episode 10 | The Truth of Troy | 2004-03-25 | 60 min |
| Season 2004 | Episode 11 | The Truth About Vitamins | 2004-09-16 | 60 min |
| Season 2004 | Episode 12 | King Solomon's Tablet of Stone | 2004-09-23 | 60 min |
| Season 2004 | Episode 13 | Derek Tastes of Earwax | 2004-09-30 | 60 min |
| Season 2004 | Episode 14 | What Really Killed the Dinosaurs? | 2004-10-07 | 60 min |
| Season 2004 | Episode 15 | Making Millions the Easy Way | 2004-10-14 | 60 min |
| Season 2004 | Episode 16 | Saturn - Lord of the Rings | 2004-10-21 | 60 min |
| Season 2004 | Episode 17 | The Hunt for the Supertwister | 2004-10-28 | 60 min |
| Season 2004 | Episode 18 | Dr. Money and the Boy with No Penis | 2004-11-04 | 60 min |
| Season 2005 | Episode 1 | Global Dimming | 2005-01-13 | 60 min |
| Season 2005 | Episode 2 | Einstein's Unfinished Symphony | 2005-01-20 | 60 min |
| Season 2005 | Episode 3 | Einstein's Equation of Life and Death | 2005-01-27 | 60 min |
| Season 2005 | Episode 4 | Living with ADHD | 2005-03-03 | 60 min |
| Season 2005 | Episode 5 | Neanderthal | 2005-02-10 | 60 min |
| Season 2005 | Episode 6 | An Experiment to Save the World | 2005-02-17 | 60 min |
| Season 2005 | Episode 7 | Who's Afraid of Designer Babies? | 2005-02-24 | 60 min |
| Season 2005 | Episode 8 | The Lost Civilisation of Peru | 2005-03-03 | 60 min |
| Season 2005 | Episode 9 | The Next Megaquake | 2005-05-22 | 60 min |
| Season 2005 | Episode 10 | Does the MMR Jab Cause Autism? | 2005-05-29 | 60 min |
| Season 2005 | Episode 11 | Malaria: Defeating the Curse | 2005-06-05 | 60 min |
| Season 2005 | Episode 12 | Tsunami: Naming the Dead | 2005-09-01 | 60 min |
| Season 2005 | Episode 13 | The Hawking Paradox | 2005-09-08 | 60 min |
| Season 2005 | Episode 14 | The Mystery of the Human Hobbit | 2005-09-15 | 60 min |
| Season 2005 | Episode 15 | The Doctor Who Makes People Walk Again? | 2005-10-06 | 60 min |
| Season 2005 | Episode 16 | Can Fish Make My Child Smart? | 2005-10-06 | 60 min |
| Season 2005 | Episode 17 | Madagascar - A Treetop Odyssey | 2005-10-13 | 60 min |
| Season 2005 | Episode 18 | Titan. A Place Like Home? | 2005-11-10 | 60 min |
| Season 2005 | Episode 19 | The 7/7 Bombers: A Psychological Investigation | 2005-12-08 | 60 min |
| Season 2005 | Episode 20 | The Ghost in Your Genes | 2005-12-15 | 60 min |
| Season 2006 | Episode 1 | The Life and Times of El Niño | 2006-01-03 | 60 min |
| Season 2006 | Episode 2 | Space Tourists | 2006-01-12 | 60 min |
| Season 2006 | Episode 3 | Waiting for a Heartbeat | 2006-01-19 | 60 min |
| Season 2006 | Episode 4 | A War on Science | 2006-01-26 | 60 min |
| Season 2006 | Episode 5 | The Lost City of New Orleans | 2006-02-02 | 60 min |
| Season 2006 | Episode 6 | Most of Our Universe is Missing | 2006-02-09 | 60 min |
| Season 2006 | Episode 7 | Winning Gold in 2012 | 2006-03-18 | 60 min |
| Season 2006 | Episode 8 | The Woman Who Thinks Like a Cow | 2006-06-08 | 60 min |
| Season 2006 | Episode 9 | The Genius Sperm Bank | 2006-06-15 | 60 min |
| Season 2006 | Episode 10 | Bye Bye Planet Pluto | 2006-06-22 | 60 min |
| Season 2006 | Episode 11 | We Love Cigarettes | 2006-06-29 | 60 min |
| Season 2006 | Episode 12 | Nuclear Nightmares | 2006-07-13 | 60 min |
| Season 2006 | Episode 13 | Tutankhamun's Fireball | 2006-07-20 | 60 min |
| Season 2006 | Episode 14 | Survivors Guide to Plane Crashes | 2006-10-03 | 60 min |
| Season 2006 | Episode 15 | Chimps Are People Too | 2006-10-10 | 60 min |
| Season 2006 | Episode 16 | The Worlds First Face Transplant | 2006-10-17 | 60 min |
| Season 2006 | Episode 17 | Human v2.0 | 2006-10-24 | 60 min |
| Season 2006 | Episode 18 | The Great Robot Race | 2006-10-31 | 60 min |
| Season 2006 | Episode 19 | Pandemic | 2006-11-07 | 60 min |
| Season 2006 | Episode 20 | We Are the Aliens | 2006-11-14 | 60 min |
| Season 2007 | Episode 1 | My Pet Dinosaur | 2007-03-13 | 60 min |
| Season 2007 | Episode 2 | The Elephant's Guide to Sex | 2007-03-20 | 60 min |
| Season 2007 | Episode 3 | Prof Regan's Beauty Parlour | 2007-03-27 | 60 min |
| Season 2007 | Episode 4 | Mad But Glad | 2007-04-03 | 60 min |
| Season 2007 | Episode 5 | Moon for Sale | 2007-04-10 | 60 min |
| Season 2007 | Episode 6 | Battle of the Brains | 2007-04-17 | 60 min |
| Season 2007 | Episode 7 | Skyscraper Fire Fighters | 2007-04-24 | 60 min |
| Season 2007 | Episode 8 | The Six Billion Dollar Experiment | 2007-05-01 | 60 min |
| Season 2007 | Episode 9 | How to Commit the Perfect Murder | 2007-05-08 | 60 min |
| Season 2008 | Episode 1 | How to Kill a Human Being | 2008-01-15 | 60 min |
| Season 2008 | Episode 2 | Total Isolation | 2008-01-22 | 60 min |
| Season 2008 | Episode 3 | What on Earth is Wrong with Gravity? | 2008-01-29 | 60 min |
| Season 2008 | Episode 4 | Is Alcohol Worse Than Ecstasy? | 2008-02-05 | 60 min |
| Season 2008 | Episode 5 | How to Make Better Decisions | 2008-02-12 | 60 min |
| Season 2008 | Episode 6 | How to Live to Be 101 | 2008-02-19 | 60 min |
| Season 2008 | Episode 7 | Prof. Regan's Supermarket Secrets | 2008-02-26 | 60 min |
| Season 2008 | Episode 8 | Are We Alone in the Universe? | 2008-03-04 | 60 min |
| Season 2008 | Episode 9 | How Much is Your Dead Body Worth? | 2008-03-18 | 60 min |
| Season 2008 | Episode 10 | How Does Your Memory Work? | 2008-03-25 | 60 min |
| Season 2008 | Episode 11 | The President's Guide to Science | 2008-09-16 | 60 min |
| Season 2008 | Episode 12 | How Mad Are You? (1 of 2) | 2008-11-11 | 60 min |
| Season 2008 | Episode 13 | How Mad Are You? (2 of 2) | 2008-11-18 | 60 min |
| Season 2008 | Episode 14 | Jimmy's GM Food Fight | 2008-11-25 | 60 min |
| Season 2008 | Episode 15 | Do You Know What Time It Is? | 2008-12-02 | 60 min |
| Season 2008 | Episode 16 | Allergy Planet | 2008-12-09 | 60 min |
| Season 2008 | Episode 17 | Where's My Robot? | 2008-12-16 | 60 min |
| Season 2009 | Episode 1 | Why Are Thin People Not Fat? | 2009-01-26 | 60 min |
| Season 2009 | Episode 2 | Cannabis: The Evil Weed? | 2009-02-03 | 60 min |
| Season 2009 | Episode 3 | Why Do We Dream? | 2009-02-10 | 60 min |
| Season 2009 | Episode 4 | Can We Make a Star on Earth? | 2009-02-17 | 60 min |
| Season 2009 | Episode 5 | The Secret Life of Your Bodyclock | 2009-02-24 | 60 min |
| Season 2009 | Episode 6 | What's the Problem with Nudity? | 2009-03-03 | 60 min |
| Season 2009 | Episode 7 | How to Survive a Disaster | 2009-03-10 | 60 min |
| Season 2009 | Episode 8 | Who Do You Want Your Child to Be? | 2009-03-17 | 60 min |
| Season 2009 | Episode 9 | Why Can't We Predict Earthquakes? | 2009-03-24 | 60 min |
| Season 2009 | Episode 10 | Alan and Marcus Go Forth and Multiply | 2009-03-31 | 60 min |
| Season 2009 | Episode 11 | How Violent Are You? | 2009-05-12 | 60 min |
| Season 2009 | Episode 12 | Do I Drink Too Much? | 2009-10-13 | 60 min |
| Season 2009 | Episode 13 | The Secret You | 2009-10-20 | 60 min |
| Season 2009 | Episode 14 | Fix Me | 2009-10-27 | 60 min |
| Season 2009 | Episode 15 | Who's Afraid of a Big Black Hole? | 2009-11-03 | 60 min |
| Season 2009 | Episode 16 | Why Do We Talk? | 2009-11-10 | 60 min |
| Season 2009 | Episode 17 | How Long is a Piece of String? | 2009-11-17 | 60 min |
| Season 2009 | Episode 18 | How Many People Can Live on Planet Earth? | 2009-12-09 | 60 min |
| Season 2010 | Episode 1 | The Secret Life of the Dog | 2010-01-06 | 60 min |
| Season 2010 | Episode 2 | Why Do Viruses Kill? | 2010-01-13 | 60 min |
| Season 2010 | Episode 3 | Pill Poppers | 2010-01-20 | 60 min |
| Season 2010 | Episode 4 | Don't Grow Old | 2010-02-03 | 60 min |
| Season 2010 | Episode 5 | To Infinity and Beyond | 2010-02-10 | 60 min |
| Season 2010 | Episode 6 | What Makes a Genius? | 2010-02-17 | 60 min |
| Season 2010 | Episode 7 | Did Cooking Make Us Human? | 2010-03-02 | 60 min |
| Season 2010 | Episode 8 | Is Everything We Know About the Universe Wrong? | 2010-03-09 | 60 min |
| Season 2010 | Episode 9 | Back from the Dead | 2010-09-27 | 60 min |
| Season 2010 | Episode 10 | The Death of the Oceans | 2010-10-04 | 60 min |
| Season 2010 | Episode 11 | What Happened Before the Big Bang? | 2010-10-11 | 60 min |
| Season 2010 | Episode 12 | Is Seeing Believing? | 2010-10-18 | 60 min |
| Season 2010 | Episode 13 | Miracle Cure? A Decade of the Human Genome | 2010-10-25 | 60 min |
| Season 2010 | Episode 14 | Asteroids - The Good, the Bad and the Ugly | 2010-11-03 | 60 min |
| Season 2010 | Episode 15 | Deepwater Disaster - The Untold Story | 2010-11-16 | 60 min |
| Season 2011 | Episode 1 | What is One Degree? | 2011-01-10 | 60 min |
| Season 2011 | Episode 2 | What is Reality? | 2011-01-17 | 60 min |
| Season 2011 | Episode 3 | Science Under Attack | 2011-01-24 | 60 min |
| Season 2011 | Episode 4 | The Secret World of Pain | 2011-01-31 | 60 min |
| Season 2011 | Episode 5 | Surviving a Car Crash | 2011-02-07 | 60 min |
| Season 2011 | Episode 6 | How to Mend a Broken Heart | 2011-02-14 | 60 min |
| Season 2011 | Episode 7 | Are We Still Evolving? | 2011-03-01 | 60 min |
| Season 2011 | Episode 8 | Predators in Your Backyard | 2011-03-08 | 60 min |
| Season 2011 | Episode 9 | Do You See What I See | 2011-08-08 | 60 min |
| Season 2011 | Episode 10 | Seeing Stars | 2011-08-15 | 60 min |
| Season 2011 | Episode 11 | The Nine Months That Made You | 2011-08-22 | 60 min |
| Season 2011 | Episode 12 | The Core | 2011-08-31 | 60 min |
| Season 2011 | Episode 13 | Are You Good or Evil? | 2011-09-07 | 60 min |
| Season 2011 | Episode 14 | Fukushima: Is Nuclear Power Safe? | 2011-09-14 | 60 min |
| Season 2012 | Episode 1 | Playing God | 2012-01-17 | 60 min |
| Season 2012 | Episode 2 | The Truth About Exercise | 2012-02-28 | 60 min |
| Season 2012 | Episode 3 | Solar Storms: The Threat to Planet Earth | 2012-03-06 | 60 min |
| Season 2012 | Episode 4 | Out of Control? | 2012-03-13 | 60 min |
| Season 2012 | Episode 5 | The Truth About Fat | 2012-03-20 | 60 min |
| Season 2012 | Episode 6 | Global Weirding | 2012-03-27 | 60 min |
| Season 2012 | Episode 7 | The Hunt for AI | 2012-04-03 | 60 min |
| Season 2012 | Episode 8 | Defeating Cancer | 2012-04-10 | 60 min |
| Season 2012 | Episode 9 | The Transit of Venus | 2012-06-05 | 60 min |
| Season 2012 | Episode 10 | The Truth About Looking Younger | 2012-07-23 | 60 min |
| Season 2012 | Episode 11 | Mission to Mars | 2012-07-30 | 60 min |
| Season 2012 | Episode 12 | Eat, Fast and Live Longer | 2012-08-06 | 60 min |
| Season 2012 | Episode 13 | How Big is the Universe? | 2012-08-27 | 60 min |
| Season 2012 | Episode 14 | How Small is the Universe? | 2012-09-03 | 60 min |
| Season 2012 | Episode 15 | Defeating the Superbugs | 2012-09-10 | 60 min |
| Season 2013 | Episode 1 | The Creative Brain: How Insight Works | 2013-03-14 | 60 min |
| Season 2013 | Episode 2 | How to Avoid Mistakes in Surgery | 2013-03-21 | 60 min |
| Season 2013 | Episode 3 | The Truth About Taste | 2013-03-28 | 60 min |
| Season 2013 | Episode 4 | The Age of Big Data | 2013-04-04 | 60 min |
| Season 2013 | Episode 5 | The Secret Life of the Cat | 2013-06-13 | 60 min |
| Season 2013 | Episode 6 | Little Cat Diaries | 2013-06-14 | 60 min |
| Season 2013 | Episode 7 | Fracking: The New Energy Rush | 2013-06-19 | 60 min |
| Season 2013 | Episode 8 | Swallowed by a Black Hole | 2013-06-26 | 60 min |
| Season 2013 | Episode 9 | What Makes Us Human? | 2013-07-03 | 60 min |
| Season 2013 | Episode 10 | The Truth About Personality | 2013-07-10 | 60 min |
| Season 2013 | Episode 11 | Monitor Me | 2013-08-12 | 60 min |
| Season 2013 | Episode 12 | Defeating the Hackers | 2013-08-19 | 60 min |
| Season 2013 | Episode 13 | Dinosaurs: The Hunt for Life | 2013-08-26 | 60 min |
| Season 2014 | Episode 1 | Sugar vs. Fat | 2014-01-29 | 60 min |
| Season 2014 | Episode 2 | Swallowed by a Sink Hole | 2014-02-03 | 60 min |
| Season 2014 | Episode 3 | Man on Mars - Mission to the Red Planet | 2014-02-10 | 60 min |
| Season 2014 | Episode 4 | The Power of the Placebo | 2014-02-17 | 60 min |
| Season 2014 | Episode 5 | How You Really Make Decisions | 2014-02-24 | 60 min |
| Season 2014 | Episode 6 | Living with Autism | 2014-04-01 | 60 min |
| Season 2014 | Episode 7 | The £10 Million Challenge | 2014-05-22 | 60 min |
| Season 2014 | Episode 8 | Where is Flight MH370? | 2014-06-17 | 60 min |
| Season 2014 | Episode 9 | What's Wrong with Our Weather? | 2014-07-17 | 60 min |
| Season 2014 | Episode 10 | Should I Eat Meat? - The Big Health Dilemma | 2014-08-18 | 60 min |
| Season 2014 | Episode 11 | Should I Eat Meat? - How to Feed the Planet | 2014-08-20 | 60 min |
| Season 2014 | Episode 12 | Allergies: Modern Life and Me | 2014-08-27 | 60 min |
| Season 2014 | Episode 13 | Inside the Dark Web | 2014-09-03 | 60 min |
| Season 2014 | Episode 14 | Ebola - The Search for a Cure | 2014-09-10 | 60 min |
| Season 2014 | Episode 15 | Is Your Brain Male or Female? | 2014-09-29 | 60 min |
| Season 2015 | Episode 1 | Secrets of the Solar System | 2015-03-03 | 60 min |
| Season 2015 | Episode 2 | Aftershock: The Hunt for Gravitational Waves | 2015-03-10 | 60 min |
| Season 2015 | Episode 3 | Dancing in the Dark - The End of Physics? | 2015-03-17 | 60 min |
| Season 2015 | Episode 4 | 70 Million Animal Mummies: Egypt's Dark Secret | 2015-05-11 | 60 min |
| Season 2015 | Episode 5 | Is Binge Drinking Really That Bad? | 2015-05-20 | 60 min |
| Season 2015 | Episode 6 | The Trouble with Space Junk | 2015-08-05 | 60 min |
| Season 2015 | Episode 7 | Are Health Tests Really a Good Idea? | 2015-08-12 | 60 min |
| Season 2015 | Episode 8 | First Britons | 2015-08-19 | 60 min |
| Season 2015 | Episode 9 | OCD: A Monster in My Mind | 2015-08-26 | 60 min |
| Season 2015 | Episode 10 | Which Universe Are We In? | 2015-09-02 | 60 min |
| Season 2015 | Episode 11 | Cosmic Dawn: The Real Moment of Creation | 2015-09-09 | 60 min |
| Season 2015 | Episode 12 | Are Video Games Really That Bad? | 2015-09-16 | 60 min |
| Season 2016 | Episode 1 | The Immortalist | 2016-03-16 | 60 min |
| Season 2016 | Episode 2 | Project Greenglow - The Quest for Gravity Control | 2016-03-23 | 60 min |
| Season 2016 | Episode 3 | The Mystery of Dark Energy | 2016-03-30 | 60 min |
| Season 2016 | Episode 4 | Oceans of the Solar System | 2016-04-06 | 60 min |
| Season 2016 | Episode 5 | The End of the Solar System | 2016-04-13 | 60 min |
| Season 2016 | Episode 6 | Should We Close Our Zoos? | 2016-04-17 | 60 min |
| Season 2016 | Episode 7 | How to Find Love Online | 2016-04-25 | 60 min |
| Season 2016 | Episode 8 | Ice Station Antarctica | 2016-05-04 | 60 min |
| Season 2016 | Episode 9 | Curing Alzheimer's | 2016-05-11 | 60 min |
| Season 2016 | Episode 10 | E-Cigarettes: Miracle or Menace? | 2016-05-22 | 65 min |
| Season 2016 | Episode 11 | Why Are We Getting So Fat | 2016-06-07 | 60 min |
| Season 2016 | Episode 12 | Sports Doping - Winning at Any Cost? | 2016-07-19 | 60 min |
| Season 2016 | Episode 13 | Special - Inside Cern | 2016-08-10 | 60 min |
| Season 2016 | Episode 14 | My Amazing Twin | 2016-08-25 | 60 min |
| Season 2016 | Episode 15 | Jimmy Carr and the Science of Laughter | 2016-09-11 | 60 min |
| Season 2016 | Episode 16 | The Lost Tribes of Humanity | 2016-10-12 | 60 min |
| Season 2016 | Episode 17 | The Wildest Weather in the Universe | 2016-10-23 | 60 min |
| Season 2017 | Episode 1 | Clean Eating - The Dirty Truth | 2017-01-19 | 60 min |
| Season 2017 | Episode 2 | Hair Care Secrets | 2017-01-23 | 60 min |
| Season 2017 | Episode 3 | ADHD and Me with Rory Bremner | 2017-04-25 | 60 min |
| Season 2017 | Episode 4 | Why Did I Go Mad? | 2017-05-02 | 60 min |
| Season 2017 | Episode 5 | Strange Signals from Outer Space! | 2017-05-16 | 60 min |
| Season 2017 | Episode 6 | Volcanoes of the Solar System | 2017-05-23 | 60 min |
| Season 2017 | Episode 7 | Antarctica - Ice Station Rescue | 2017-06-07 | 60 min |
| Season 2017 | Episode 8 | Cyber Attack - The Day the NHS Stopped | 2017-06-12 | 60 min |
| Season 2017 | Episode 9 | 10 Things You Need to Know About the Future | 2017-06-19 | 60 min |
| Season 2017 | Episode 10 | Dawn of the Driverless Car | 2017-06-29 | 60 min |
| Season 2017 | Episode 11 | Dippy and the Whale | 2017-07-13 | 60 min |
| Season 2017 | Episode 12 | What Makes a Psychopath? | 2017-08-29 | 60 min |
| Season 2017 | Episode 13 | Mars - A Traveller's Guide | 2017-09-12 | 60 min |
| Season 2017 | Episode 14 | Goodbye Cassini - Hello Saturn | 2017-09-18 | 60 min |
| Season 2017 | Episode 15 | Being Transgender | 2017-09-26 | 60 min |
| Season 2018 | Episode 1 | My Amazing Brain: Richard's War | 2018-02-05 | 60 min |
| Season 2018 | Episode 2 | Teenagers vs Cancer: A User's Guide | 2018-06-26 | 60 min |
| Season 2018 | Episode 3 | How to Build a Time Machine | 2018-07-10 | 60 min |
| Season 2018 | Episode 4 | Spina Bifida & Me | 2018-07-26 | 60 min |
| Season 2018 | Episode 5 | Jupiter Revealed | 2018-08-07 | 60 min |
| Season 2018 | Episode 6 | Stopping Male Suicide | 2018-08-22 | 60 min |
| Season 2018 | Episode 7 | A Week Without Lying - The Honesty Experiment | 2018-08-29 | 60 min |
| Season 2018 | Episode 8 | The Placebo Experiment: Can My Brain Cure My Body? | 2018-10-04 | 60 min |
| Season 2018 | Episode 9 | Body Clock: What Makes Us Tick? | 2018-10-11 | 60 min |
| Season 2018 | Episode 10 | Avalanche: Making a Deadly Snowstorm | 2018-10-18 | 60 min |
| Season 2018 | Episode 11 | Vitamin Pills: Miracle or Myth? | 2018-10-25 | 60 min |
| Season 2018 | Episode 12 | Diagnosis on Demand? The Computer Will See You Now | 2018-11-01 | 60 min |
| Season 2018 | Episode 13 | The Contraceptive Pill: How Safe Is It? | 2018-11-21 | 59 min |
| Season 2019 | Episode 1 | We Need to Talk about Death | 2019-01-23 | 60 min |
| Season 2019 | Episode 2 | Alastair Campbell: Depression and Me | 2019-05-21 | 60 min |
| Season 2019 | Episode 3 | Britain's Next Air Disaster? Drones | 2019-07-01 | 60 min |
| Season 2019 | Episode 4 | The Honest Supermarket: What's Really in Our Food? | 2019-07-08 | 59 min |
| Season 2019 | Episode 5 | Inside the Social Network: Facebook's Difficult Year | 2019-07-16 | 60 min |
| Season 2019 | Episode 6 | The 250 Million Pound Cancer Cure | 2019-07-22 | 59 min |
| Season 2019 | Episode 7 | Cannabis: Miracle Medicine or Dangerous Drug? | 2019-08-28 | 60 min |
| Season 2020 | Episode 1 | Addicted to Painkillers? Britain's Opioid Crisis | 2020-01-16 | 59 min |
| Season 2020 | Episode 2 | Chris Packham: 7.7 Billion People and Counting | 2020-01-21 | 59 min |
| Season 2020 | Episode 3 | Toxic Town: The Corby Poisonings | 2020-03-23 | 60 min |
| Season 2020 | Episode 4 | Coronavirus Special - Part 1 | 2020-04-09 | 60 min |
| Season 2020 | Episode 5 | The Restaurant that Burns Off Calories | 2020-04-20 | 58 min |
| Season 2020 | Episode 6 | Hubble: The Wonders of Space Revealed | 2020-04-24 | 59 min |
| Season 2020 | Episode 7 | The Great British Intelligence Test | 2020-05-04 | 60 min |
| Season 2020 | Episode 8 | Coronavirus Special - Part 2 | 2020-05-19 | 60 min |
| Season 2020 | Episode 9 | What's the Matter with Tony Slattery? | 2020-05-21 | 60 min |
| Season 2020 | Episode 10 | Pluto: Back From the Dead | 2020-07-06 | 60 min |
| Season 2021 | Episode 1 | Feast to Save the Planet | 2021-01-04 | 60 min |
| Season 2021 | Episode 2 | Coronavirus Special - What We Know Now | 2021-02-25 | 60 min |
| Season 2021 | Episode 3 | Horizon Special: The Vaccine | 2021-06-16 | 90 min |
| Season 2022 | Episode 1 | How to Sleep Well with Michael Mosley | 2022-03-31 | 60 min |
| Season 2022 | Episode 2 | Making Sense of Cancer with Hannah Fry | 2022-06-02 | 60 min |
| Season 2022 | Episode 3 | Super Telescope: Mission to the Edge of the Universe | 2022-07-14 | 60 min |
