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Revision as of 15:35, 22 July 2010
Horizon is a current and long-running BBC popular science and philosophy documentary programme. Season one aired in 1964 and currently there have been 46 seasons produced. 1084 episodes have been aired with an average of 24 episodes per season during the 46 year run.
1964-1970 207 episodes
1970-1980 284 episodes
1980-1990 233 episodes
1990-2000 186 episodes
2000-2010 174 episodes
Specials
| Title | Original air date | Episode |
|---|---|---|
| "Special, The Great British Drought" | May 26, 1976 | 00x01 |
| "Special, Darwin's Dream" | September 23, 1977 | 00x02 |
| "Special, The Case Of The Ancient Astronauts" | November 25, 1977 | 00x03 |
| "Special, The Mind's Eye" | January 28, 1980 | 00x04 |
| "Special, 25 Years In Space" | December 25, 1982 | 00x05 |
| "Special, Biology At War: The Mystery Of Yellow Rain" | May 15, 1984 | 00x06 |
| "Special, Beyond The Moon" | July 21, 1984 | 00x07 |
| "Special, Biology At War: A Plague In The Wind" | October 29, 1984 | 00x08 |
| "Special, Halley's Comet: The Apparition" | November 25, 1985 | 00x09 |
| "Special, Life Story" | April 27, 1987 | 00x10 |
| "Doctors To Be, 1: Trial By Interview" | April 23, 1988 | 00x11 |
| "Doctors To Be, 2: The Knowledge" | April 24, 1988 | 00x12 |
| "Doctors To Be, 3: Welcome To The Real World" | April 25, 1988 | 00x13 |
| "Special, The Quest For Tannu Tuva" | July 4, 1988 | 00x14 |
| "Special, Making An Honest Fiver" | June 6, 1990 | 00x15 |
| "Red Star In Orbit Special, 1: The Invisible Spaceman" | December 7, 1990 | 00x16 |
| "Red Star In Orbit Special, 2: The Dark Side Of The Moon" | December 14, 1990 | 00x17 |
| "Red Star In Orbit Special, 3: The Mission" | December 21, 1990 | 00x18 |
| "Special, A Close Encounter Of The Second Kind" | July 10, 1992 | 00x19 |
| "Special, Hide And Seek In Iraq" | August 23, 1992 | 00x20 |
| "Special, Assault On The Male" | October 31, 1993 | 00x21 |
| "Special, Twice Born" | February 14, 1995 | 00x22 |
| "BSE Special, The Invisible Enemy" | November 17, 1996 | 00x23 |
| "BSE Special, The Human Experiment" | November 18, 1996 | 00x24 |
| "Ice Mummies Special, 1: The Ice Maiden" | January 30, 1997 | 00x25 |
| "Ice Mummies Special, 2: A Life In Ice" | February 6, 1997 | 00x26 |
| "Ice Mummies Special, 3: Frozen In Heaven" | February 13, 1997 | 00x27 |
| "Special, Destination Mars" | July 4, 1997 | 00x28 |
| "Antarctica Special, 1: The Ice Lives" | October 30, 1997 | 00x29 |
| "Antarctica Special, 2: The Ice Forms" | November 6, 1997 | 00x30 |
| "Antarctica Special, 3: The Ice Melts" | November 13, 1997 | 00x31 |
| "Evolution Weekend, The Fossil Roadshow" | March 29, 1998 | 00x32 |
| "Darwin, The Legacy" | March 29, 1998 | 00x33 |
| "Special, Longitude" | January 4, 1999 | 00x34 |
| "Fat Files Special, 1: Born To Be Fat" | January 7, 1999 | 00x35 |
| "Fat Files Special, 2: Fixing Fat" | January 14, 1999 | 00x36 |
| "Fat Files Special, 3: Living On Air" | January 21, 1999 | 00x37 |
| "Atlantis Special, Atlantis Uncovered" | October 28, 1999 | 00x38 |
| "Atlantis Special, Atlantis Reborn" | November 4, 1999 | 00x39 |
| "Life And Death In The 21St Century Special, 1: Living Forever" | January 4, 2000 | 00x40 |
| "Life And Death In The 21St Century Special, 2: Future Plagues" | January 5, 2000 | 00x41 |
| "Life And Death In The 21St Century Special, 3: Designer Babies" | January 6, 2000 | 00x42 |
| "Mars Special, Life On Mars" | January 11, 2001 | 00x43 |
| "Mars Special, Destination Mars" | January 18, 2001 | 00x44 |
| "Special, What Sank The Kursk?" | August 8, 2001 | 00x45 |
| "Special, First Olympian" | July 23, 2004 | 00x46 |
| "Special: Winning Gold In 2012" | March 18, 2006 | 00x47 |
| "Everest: Doctors in the Death Zone Part 1" | September 23, 2007 | 00x48 |
| "Everest: Doctors in the Death Zone Part 2" | September 30, 2007 | 00x49 |
| "Mars: A Horizon Guide" | November 15, 2009 | 00x50 |
| "Diet: A Horizon Guide" | January 7, 2010 | 00x51 |
Season 01: 1964-1965
| Title | Original air date | Episode |
|---|---|---|
| "The World Of Buckminster Fuller" | May 2, 1964 | 01x01 |
| "Pesticides And Posterity" | May 30, 1964 | 01x02 |
| "A Candle To Nature" | June 27, 1964 | 01x03 |
| "Strangeness Minus Three" | July 25, 1964 | 01x04 |
| "The Air Of Science" | August 22, 1964 | 01x05 |
| "The Knowledge Explosion" | September 21, 1964 | 01x06 |
| "The Amateur Scientist" | October 19, 1964 | 01x07 |
| "Tots And Quots And Woodgerie" | November 16, 1964 | 01x08 |
| "Professor J.B.S.Haldane, Obituary" | December 1, 1964 | 01x09 |
| "Science, Toys And Magic" | December 14, 1964 | 01x10 |
| "Learning From Machines" | January 6, 1965 | 01x11 |
| "The Technique Of Change" | January 20, 1965 | 01x12 |
| "Star Gazers" | February 3, 1965 | 01x13 |
| "Science And Art" | February 17, 1965 | 01x14 |
| "The Great Computer Scandal" | March 3, 1965 | 01x15 |
| March 17, 1965 | 01x16 | |
| "Faster, Farther, Higher" | March 31, 1965 | 01x17 |
| "Other Side of the Pill" | April 14, 1965 | 01x18 |
| May 12, 1965 | 01x19 | |
| May 26, 1965 | 01x20 | |
| June 9, 1965 | 01x21 | |
| June 23, 1965 | 01x22 | |
| "Dr. Joseph Needham" | July 14, 1965 | 01x23 |
| July 28, 1965 | 01x24 | |
| "Certain of Uncertainty" | August 11, 1965 | 01x25 |
| August 25, 1965 | 01x26 | |
| "Fuel For The Future" | September 8, 1965 | 01x27 |
| "Let Newton Be" | September 22, 1965 | 01x28 |
Season 02: 1965-1966
| Title | Original air date | Episode |
|---|---|---|
| "Special Senses" | October 10, 1965 | 02x01 |
| "An Affair Of The Heart" | October 24, 1965 | 02x02 |
| "Ten Thousand Tombs" | November 7, 1965 | 02x03 |
| "Toil, Sweat & Tears" | November 21, 1965 | 02x04 |
| "The Big Dishes And The Living Stream" | December 5, 1965 | 02x05 |
| December 19, 1965 | 02x06 | |
| January 2, 1966 | 02x07 | |
| January 16, 1966 | 02x08 | |
| "A Man Of Two Visions" | January 30, 1966 | 02x09 |
| February 13, 1966 | 02x10 | |
| February 27, 1966 | 02x11 | |
| March 13, 1966 | 02x12 | |
| March 27, 1966 | 02x13 | |
| April 10, 1966 | 02x14 | |
| April 24, 1966 | 02x15 | |
| "Man In Space" | May 8, 1966 | 02x16 |
| May 22, 1966 | 02x17 | |
| June 5, 1966 | 02x18 | |
| June 19, 1966 | 02x19 | |
| July 3, 1966 | 02x20 | |
| "The Lonely Children" | July 17, 1966 | 02x21 |
| July 31, 1966 | 02x22 | |
| September 11, 1966 | 02x23 | |
| September 25, 1966 | 02x24 |
Season 03: 1966-1967
| Title | Original air date | Episode |
|---|---|---|
| "Ten Years In The Antarctic" | October 10, 1966 | 03x01 |
| "The Athlete" | October 24, 1966 | 03x02 |
| "From Peenemunde To The Moon" | November 7, 1966 | 03x03 |
| November 21, 1966 | 03x04 | |
| "The Structure Of Life" | December 5, 1966 | 03x05 |
| "Hand Me My Sword, Humphrey" | December 25, 1966 | 03x06 |
| "Sons Of Cain" | January 17, 1967 | 03x07 |
| "How Best To Make A Man, How Best To Make A Scientist" | February 14, 1967 | 03x08 |
| "Dynamo, The Life Of Michael Faraday" | February 28, 1967 | 03x09 |
| "Migraine" | March 14, 1967 | 03x10 |
| "How Safe Is Surgery?" | March 28, 1967 | 03x11 |
| "The Shape Of War To Come" | April 25, 1967 | 03x12 |
| "Memory" | May 9, 1967 | 03x13 |
| "Masters Of The Desert" | May 23, 1967 | 03x14 |
| "Cancer, The Smoker's Gamble" | June 20, 1967 | 03x15 |
| "Science And The Supernatural" | July 4, 1967 | 03x16 |
| "Hypnosis" | July 18, 1967 | 03x17 |
Season 04: 1967-1968
| Title | Original air date | Episode |
|---|---|---|
| "The War Of The Boffins" | September 12, 1967 | 04x01 |
| "Aspects Of Alcohol" | September 26, 1967 | 04x02 |
| "Lords Of The Sea" | October 10, 1967 | 04x03 |
| "Will Art Last?" | October 24, 1967 | 04x04 |
| "Air Safety, The Unknown Factor" | November 7, 1967 | 04x05 |
| November 21, 1967 | 04x06 | |
| "Koestler On Creativity" | December 5, 1967 | 04x07 |
| "The World Of Ted Serios" | December 19, 1967 | 04x08 |
| "Professor In Toyland" | December 24, 1967 | 04x09 |
| "An Ingenious Man, Sir H.John Baker" | January 2, 1968 | 04x10 |
| "Man's Best Friend" | January 30, 1968 | 04x11 |
| "Once A Junkie" | February 13, 1968 | 04x12 |
| "Town Traffic And Tomorrow" | February 27, 1968 | 04x13 |
| "The Man Makers" | March 12, 1968 | 04x14 |
| "Man In Search Of Himself" | March 26, 1968 | 04x15 |
| "Investigating Murder" | April 9, 1968 | 04x16 |
| "The Equation Of Murder" | May 7, 1968 | 04x17 |
Season 05: 1968-1969
| Title | Original air date | Episode |
|---|---|---|
| "Lindemann Enigma" | September 12, 1968 | 05x01 |
| "From Field To Factory" | September 19, 1968 | 05x02 |
| "Comfort On Ageing" | September 26, 1968 | 05x03 |
| "Experiments In War" | October 3, 1968 | 05x04 |
| "African Medicine" | October 17, 1968 | 05x05 |
| "The Broken Bridge" | October 24, 1968 | 05x06 |
| "Children Without Words" | October 31, 1968 | 05x07 |
| "Computer Revolution" | November 7, 1968 | 05x08 |
| "Doctor's Dilemma" | November 14, 1968 | 05x09 |
| "In The Matter Of Dr Alfred Nobel" | November 21, 1968 | 05x10 |
| "Wheels Within Wheels" | November 28, 1968 | 05x11 |
| "Black Man-White Science" | December 5, 1968 | 05x12 |
| "Hidden World" | December 12, 1968 | 05x13 |
| "The Talgai Skull" | December 19, 1968 | 05x14 |
| "Phantasmagoria, The Magic Lantern" | December 24, 1968 | 05x15 |
| "Inside Every Fat Man..." | January 2, 1969 | 05x16 |
| "If Only They Could Speak" | January 9, 1969 | 05x17 |
| "The Miraculous Wonder, The Human Eye" | January 16, 1969 | 05x18 |
| "The Year Of The Locusts" | January 23, 1969 | 05x19 |
| "The Gifted Child" | January 30, 1969 | 05x20 |
| "The Last Of The Polymaths" | February 6, 1969 | 05x21 |
| "Music And The Mind" | February 13, 1969 | 05x22 |
| "Report On V.D." | February 20, 1969 | 05x23 |
| "The Drift From Science" | March 6, 1969 | 05x24 |
| "Powers Of Persuasion" | March 13, 1969 | 05x25 |
| "The View From Space" | March 20, 1969 | 05x26 |
| "The Unborn Patient" | March 27, 1969 | 05x27 |
| "King Solomon's Garden" | April 10, 1969 | 05x28 |
| "Muck Today-Poison Tomorrow" | April 24, 1969 | 05x29 |
| "Shark" | May 1, 1969 | 05x30 |
| "Technology And Self Determination" | May 15, 1969 | 05x31 |
| "After Apollo" | May 22, 1969 | 05x32 |
| "Discovery" | May 29, 1969 | 05x33 |
| "Machines And People, Rt Hon A.Wedgwood-Benn" | June 5, 1969 | 05x34 |
Season 06: 1969-1970
| Title | Original air date | Episode |
|---|---|---|
| "Science On Safari" | September 15, 1969 | 06x01 |
| "A True Madness" | September 22, 1969 | 06x02 |
| "The Problem Of Pain" | September 29, 1969 | 06x03 |
| "Four Fast Legs And A Nose" | October 6, 1969 | 06x04 |
| "Father Of The Man" | October 13, 1969 | 06x05 |
| "Master Of The Microscope" | October 20, 1969 | 06x06 |
| "Cern" | October 27, 1969 | 06x07 |
| "Cancer" | November 10, 1969 | 06x08 |
| "There's A Rhino In My Sugar" | November 17, 1969 | 06x09 |
| "Fit To Live" | November 24, 1969 | 06x10 |
| "Don't Cackle, Lay Eggs" | December 1, 1969 | 06x11 |
| "How Much Do You Drink?" | December 8, 1969 | 06x12 |
| "A Game Of War" | December 15, 1969 | 06x13 |
| "Bread" | December 22, 1969 | 06x14 |
| "For The Safety Of Mankind" | December 29, 1969 | 06x15 |
| "Just Another World" | January 5, 1970 | 06x16 |
| "Henry Royce, Mechanic" | January 12, 1970 | 06x17 |
| "A Disease Of Our Time, Stress" | January 19, 1970 | 06x18 |
| "A Disease Of Our Time, Heart Attacks" | January 26, 1970 | 06x19 |
| "Sex And Sexuality" | February 2, 1970 | 06x20 |
| "Whose Coast?" | February 16, 1970 | 06x21 |
| "A Much Wanted Child" | February 23, 1970 | 06x22 |
| "The Expert Witness" | March 2, 1970 | 06x23 |
| "After The Iron Age" | March 9, 1970 | 06x24 |
| "Let The Therapy Fit The Crime" | March 16, 1970 | 06x25 |
| "The World Outside" | March 23, 1970 | 06x26 |
| "In The Beginning Was The Word" | March 30, 1970 | 06x27 |
| "Drifting Of The Continents" | April 13, 1970 | 06x28 |
| "A Case Of Priority" | April 20, 1970 | 06x29 |
| "The Fretful Elements" | April 27, 1970 | 06x30 |
| "One Man's Meat" | May 11, 1970 | 06x31 |
| "Only Skin Deep" | July 6, 1970 | 06x32 |
| "Wolves And Wolfmen" | July 13, 1970 | 06x33 |
| "A Measure Of Uncertainty" | August 10, 1970 | 06x34 |
| "The Manhunters" | August 17, 1970 | 06x35 |
| "Don't Get Sick In America" | August 24, 1970 | 06x36 |
| "Crown Of Thorns" | August 31, 1970 | 06x37 |
Season 07: 1970-1971
| Title | Original air date | Episode |
|---|---|---|
| "Noah's Ark In Kensington" | September 7, 1970 | 07x01 |
| "Virus" | September 14, 1970 | 07x02 |
| "Water, Water..." | September 21, 1970 | 07x03 |
| "All Creatures Great And Small" | September 28, 1970 | 07x04 |
| "Child For A Lifetime" | October 5, 1970 | 07x05 |
| "Something For Our Children" | October 12, 1970 | 07x06 |
| "Million Ton Tanker" | November 2, 1970 | 07x07 |
| "The Insect War" | November 9, 1970 | 07x08 |
| "The Savage Mind" | November 16, 1970 | 07x09 |
| "Tanks" | November 23, 1970 | 07x10 |
| "Mind The Machine" | November 30, 1970 | 07x11 |
| "Square Pegs" | December 7, 1970 | 07x12 |
| "Earthquakes, The City That Waits To Die" | December 14, 1970 | 07x13 |
| "The Man Who Talks To Frogs" | December 21, 1970 | 07x14 |
| "The Gargantuan Triumph Of Science" | December 28, 1970 | 07x15 |
| "Wildlife, The Last Great Battle" | January 4, 1971 | 07x16 |
| "Great Ormond Street" | January 18, 1971 | 07x17 |
| "A Bulldozer Through Heaven" | January 25, 1971 | 07x18 |
| "Rumours Of Wars" | February 1, 1971 | 07x19 |
| "I'm Dependent, You're Addicted" | February 15, 1971 | 07x20 |
| "Kuru, To Tremble With Fear" | February 22, 1971 | 07x21 |
| "Due To Lack Of Interest Tomorrow Has Been Cancelled" | March 8, 1971 | 07x22 |
| "What Kind Of Doctor?" | March 15, 1971 | 07x23 |
| "A Nice Sort Of Accident To Have" | March 22, 1971 | 07x24 |
| "The Wood" | April 5, 1971 | 07x25 |
| "The Measure Of Man" | April 19, 1971 | 07x26 |
| "Three Score Years And Then?" | April 26, 1971 | 07x27 |
| "Darwin's Bulldog" | May 3, 1971 | 07x28 |
| "The Secret" | May 10, 1971 | 07x29 |
| "What Every Girl Should Know" | May 17, 1971 | 07x30 |
| "Taste Of Foods To Come" | May 24, 1971 | 07x31 |
| "Looking For A Happy Landing" | May 31, 1971 | 07x32 |
| "A Case Of Depression" | June 7, 1971 | 07x33 |
| "The Total War Machine" | June 14, 1971 | 07x34 |
| "The Dinosaur Hunters" | June 21, 1971 | 07x35 |
Season 08: 1971-1972
| Title | Original air date | Episode |
|---|---|---|
| "Your Country Needs You" | September 27, 1971 | 08x01 |
| "Rheumatism" | October 4, 1971 | 08x02 |
| "If At First You Don't Succeed...You Don't Succeed" | October 11, 1971 | 08x03 |
| "One Liverpool Or Two?" | October 18, 1971 | 08x04 |
| "Rutherford, Cavendish Today" | October 25, 1971 | 08x05 |
| "The Fierce People" | November 1, 1971 | 08x06 |
| "The Men Who Painted Caves" | November 15, 1971 | 08x07 |
| "Crab Nebula" | November 22, 1971 | 08x08 |
| "Can Venice Survive?" | November 29, 1971 | 08x09 |
| "Willingly To School?" | December 6, 1971 | 08x10 |
| "The Periscope War" | December 20, 1971 | 08x11 |
| "Patently Absurd" | December 27, 1971 | 08x12 |
| "The Missing Link" | January 3, 1972 | 08x13 |
| "Navajo, The Last Red Indians" | January 10, 1972 | 08x14 |
| "How Much Do You Smell?" | January 17, 1972 | 08x15 |
| "Parasite Of Paradise" | January 31, 1972 | 08x16 |
| "The Day It Rained Periwinkles" | February 7, 1972 | 08x17 |
| "Are You Doing This For Me Doctor?" | February 14, 1972 | 08x18 |
| "How They Sold Doomsday" | February 21, 1972 | 08x19 |
| "For Love Or Money" | February 28, 1972 | 08x20 |
| "Whales, Dolphins And Men" | March 6, 1972 | 08x21 |
| "What Is Race?" | March 13, 1972 | 08x22 |
| "Man Made Lakes Of Africa" | March 20, 1972 | 08x23 |
| "Survival In The Sahara" | March 27, 1972 | 08x24 |
| "Mind Over Body" | April 10, 1972 | 08x25 |
| "Out Of Volcanoes" | April 17, 1972 | 08x26 |
| "The Wizard Who Spat On The Floor" | May 1, 1972 | 08x27 |
| "Rail Crash" | May 8, 1972 | 08x28 |
| "Do You Dig National Parks?" | May 22, 1972 | 08x29 |
| "The Rat Man, Sigmund Freud" | June 5, 1972 | 08x30 |
| "Sorry I Opened My Mouth" | June 12, 1972 | 08x31 |
| "The Ways We Move" | July 3, 1972 | 08x32 |
| "The Life That Lives On Man" | July 10, 1972 | 08x33 |
| "Sex Can Be A Problem" | July 24, 1972 | 08x34 |
| "The Surgery Of Violence" | July 31, 1972 | 08x35 |
Season 09: 1972-1973
| Title | Original air date | Episode |
|---|---|---|
| "Hospital, Episode 1922" | October 12, 1972 | 09x01 |
| "When Polar Bears Swam In The Thames" | October 19, 1972 | 09x02 |
| "Making Of An English Landscape" | October 26, 1972 | 09x03 |
| "Shadows Of Bliss" | November 2, 1972 | 09x04 |
| "Billion Marsh" | November 9, 1972 | 09x05 |
| "Do You Sincerely Want A Long Life?" | November 16, 1972 | 09x06 |
| "The Making Of A Natural History Film" | November 23, 1972 | 09x07 |
| "Fire" | November 30, 1972 | 09x08 |
| "Alaskan Pipe Dream" | December 7, 1972 | 09x09 |
| "Their Life In Your Hands" | December 21, 1972 | 09x10 |
| "Navigating Europe" | December 28, 1972 | 09x11 |
| "Epidemic" | January 4, 1973 | 09x12 |
| "Worlds In Collision" | January 11, 1973 | 09x13 |
| "The Military Necessity" | January 18, 1973 | 09x14 |
| "The Curtain Of Silence" | January 25, 1973 | 09x15 |
| "When The Breeding Has To Stop" | February 8, 1973 | 09x16 |
| "Science Is Dead, Long Live Science" | February 15, 1973 | 09x17 |
| "And Where Will The Children Play?" | March 1, 1973 | 09x18 |
| "Acupuncture" | March 8, 1973 | 09x19 |
| "What Time Is Your Body?" | March 22, 1973 | 09x20 |
| "Survival Of The Weakest" | April 5, 1973 | 09x21 |
| "Red Sea Coral And The Crown Of Thorns" | April 12, 1973 | 09x22 |
| "Lumbered...With Back-Ache!" | April 26, 1973 | 09x23 |
| "Airport" | May 3, 1973 | 09x24 |
| "Do You Remember The Memory Man?" | May 17, 1973 | 09x25 |
| "What A Waste!" | May 24, 1973 | 09x26 |
| "The Laws Of The Land" | June 7, 1973 | 09x27 |
| "Do We Really Need The Railways?" | June 14, 1973 | 09x28 |
| "The Telly Of Tomorrow" | June 21, 1973 | 09x29 |
| "How Does It Hurt?" | July 5, 1973 | 09x30 |
| "A Scientist Looks At Religion" | August 9, 1973 | 09x31 |
Season 10: 1973-1974
| Title | Original air date | Episode |
|---|---|---|
| "In Search Of Konrad Lorenz" | September 24, 1973 | 10x01 |
| "Stretch Up Tall" | October 1, 1973 | 10x02 |
| "Gilding The Lily" | October 8, 1973 | 10x03 |
| "Black Holes Of Gravity" | October 15, 1973 | 10x04 |
| "What's So Big About Us?" | October 22, 1973 | 10x05 |
| "The Steadfast Tin Solidier" | October 29, 1973 | 10x06 |
| "Carry On Smoking" | November 5, 1973 | 10x07 |
| "Air Crash Detective" | November 26, 1973 | 10x08 |
| "An Element Of Mystery" | December 3, 1973 | 10x09 |
| "Digging Up The Future" | December 17, 1973 | 10x10 |
| "Kula, A Reason For Giving" | December 24, 1973 | 10x11 |
| "Crime Lab" | December 31, 1973 | 10x12 |
| "A Matter Of Self Defence" | January 7, 1974 | 10x13 |
| "Bird Brain, The Mystery Of Bird Navigation" | January 14, 1974 | 10x14 |
| "Never Too Late To Learn" | January 21, 1974 | 10x15 |
| "The Great Fish Hunt" | January 28, 1974 | 10x16 |
| "Pedal Power" | February 4, 1974 | 10x17 |
| "The Writing On The Wall" | February 11, 1974 | 10x18 |
| "Where Did The Colorado Go?" | February 25, 1974 | 10x19 |
| "The Future Goes Boom" | March 4, 1974 | 10x20 |
| "Fusion, The Energy Promise" | March 11, 1974 | 10x21 |
| "The First Ten Years" | April 22, 1974 | 10x22 |
| "This Yankee Dodge Beats Mesmerism Hollow" | April 29, 1974 | 10x23 |
| "The Hunting Of The Quark" | May 6, 1974 | 10x24 |
| "A Noah's Ark For Europe" | May 13, 1974 | 10x25 |
| "Bridges, When It Comes To The Crunch" | June 3, 1974 | 10x26 |
| "Search For Life" | June 10, 1974 | 10x27 |
| "The Secrets Of Sleep" | June 17, 1974 | 10x28 |
| "Who Needs Skill?" | June 24, 1974 | 10x29 |
| "Hills Of Promise" | July 1, 1974 | 10x30 |
| "The Race For The Double Helix" | July 8, 1974 | 10x31 |
| "The Immigrant Doctors" | July 15, 1974 | 10x32 |
| "Mines Minerals And Men" | July 22, 1974 | 10x33 |
| "What Price Steak?" | July 29, 1974 | 10x34 |
| "Listen And Be Loyal" | August 5, 1974 | 10x35 |
| "Adam Or Eve?" | August 19, 1974 | 10x36 |
Season 11: 1974-1975
| Title | Original air date | Episode |
|---|---|---|
| "An Unholy Scramble" | September 2, 1974 | 11x01 |
| "You Do As You Are Told" | October 28, 1974 | 11x02 |
| "The First Signs Of Washoe" | November 4, 1974 | 11x03 |
| "The Other Way" | November 11, 1974 | 11x04 |
| "The Greatest Advance Since The Wheel" | November 25, 1974 | 11x05 |
| "Joey" | December 9, 1974 | 11x06 |
| "The Neglected Harvest" | December 16, 1974 | 11x07 |
| "How On Earth Did They Do That?" | December 23, 1974 | 11x08 |
| "The Lysenko Affair" | December 30, 1974 | 11x09 |
| "The Cleanest Place In The World" | January 6, 1975 | 11x10 |
| "The Killer Dust" | January 20, 1975 | 11x11 |
| "A Time To Be Born" | January 27, 1975 | 11x12 |
| "The Unsafe Sea" | February 10, 1975 | 11x13 |
| "The Change Of Life" | February 17, 1975 | 11x14 |
| "Project Fido" | February 24, 1975 | 11x15 |
| "The Planets" | March 10, 1975 | 11x16 |
| "The Long Long Walkabout" | April 7, 1975 | 11x17 |
| "The Overworked Miracle" | April 14, 1975 | 11x18 |
| "Not The Cheapest But The Best" | April 21, 1975 | 11x19 |
| "A Spoonful Of Roughage" | April 28, 1975 | 11x20 |
| "Brain Poison" | May 5, 1975 | 11x21 |
| "The Bulldog's Last Bark?" | May 12, 1975 | 11x22 |
| "Benjamin" | May 19, 1975 | 11x23 |
| "The Mcmaster Experiment" | June 2, 1975 | 11x24 |
| "The Glazed Outlook" | June 9, 1975 | 11x25 |
| "The Three Chord Trick" | June 16, 1975 | 11x26 |
| "Strange Sleep" | June 30, 1975 | 11x27 |
| "How Do You Read?" | July 14, 1975 | 11x28 |
| "The Sickly Sea" | July 21, 1975 | 11x29 |
| "Happy Catastrophe" | July 28, 1975 | 11x30 |
| "To Die-To Live, The Survivors Of Hiroshima" | August 6, 1975 | 11x31 |
| "Cannabis" | August 11, 1975 | 11x32 |
| "Meditation And The Mind" | August 18, 1975 | 11x33 |
Season 12: 1975-1976
| Title | Original air date | Episode |
|---|---|---|
| "The Trobriand Experiment" | December 29, 1975 | 12x01 |
| "The Transplant Experience" | January 5, 1976 | 12x02 |
| "Intimate Strangers" | January 12, 1976 | 12x03 |
| "A Fair Share Of What Little We Have" | January 19, 1976 | 12x04 |
| "The Incredible Machine" | January 26, 1976 | 12x05 |
| "King Coal Revived" | February 2, 1976 | 12x06 |
| "A Question Of Trust" | February 9, 1976 | 12x07 |
| "The Case Of The Bermuda Triangle" | February 16, 1976 | 12x08 |
| "The Lords Of The Labyrinth" | February 23, 1976 | 12x09 |
| "Inside The Shark" | March 1, 1976 | 12x10 |
| "The Chemical Dream" | March 8, 1976 | 12x11 |
| "The Edelin Affair" | March 15, 1976 | 12x12 |
| "The World Of Margaret Mead" | March 22, 1976 | 12x13 |
| "The Pathway From Madness" | March 29, 1976 | 12x14 |
| "Geronimo's Children" | April 5, 1976 | 12x15 |
| "The Vision Of The Blind" | April 12, 1976 | 12x16 |
| "A Lesson For Teacher" | April 26, 1976 | 12x17 |
| "Why Did Stuart Die?" | May 3, 1976 | 12x18 |
| "The Children Of Peru" | May 17, 1976 | 12x19 |
| "Dying" | May 24, 1976 | 12x20 |
| "A Home Like Ours..., A Story Of Four Children" | June 7, 1976 | 12x21 |
| "What's Wrong With The Sun?" | June 14, 1976 | 12x22 |
Season 13: 1976-1977
| Title | Original air date | Episode |
|---|---|---|
| "The Bull's-Eye War" | October 25, 1976 | 13x01 |
| "The Hot-Blooded Dinosaurs" | November 1, 1976 | 13x02 |
| "Billion Dollar Bubble" | November 8, 1976 | 13x03 |
| "The Selfish Gene" | November 15, 1976 | 13x04 |
| "A Child Of Our Own" | November 22, 1976 | 13x05 |
| "Secrets Of A Coral Island" | November 29, 1976 | 13x06 |
| "The Long Valley" | December 6, 1976 | 13x07 |
| "Half-Way To 1984" | December 13, 1976 | 13x08 |
| "The Mystery Of King Arthur And His Round Table" | December 20, 1976 | 13x09 |
| "A Smile For The Crocodile" | January 7, 1977 | 13x10 |
| "The Pill For The People" | January 14, 1977 | 13x11 |
| "The Ape That Stood Up" | January 21, 1977 | 13x12 |
| "The Human Animal" | February 4, 1977 | 13x13 |
| "The Guinea Pig And The Law" | February 18, 1977 | 13x14 |
| "Hunters Of The Seal" | February 25, 1977 | 13x15 |
| "The Red Planet" | March 4, 1977 | 13x16 |
| "One Of Nature's Hotels" | March 11, 1977 | 13x17 |
| "Dawn Of The Solar Age" | March 18, 1977 | 13x18 |
| "Genetic Roulette" | April 1, 1977 | 13x19 |
| "The Amazing Doctor Newton" | July 15, 1977 | 13x20 |
| "The Trouble With Medicine" | July 22, 1977 | 13x21 |
| "Silent Speech" | July 29, 1977 | 13x22 |
| "The Green Machine" | August 5, 1977 | 13x23 |
| "Horizon 2002" | August 26, 1977 | 13x24 |
Season 14: 1977-1978
| Title | Original air date | Episode |
|---|---|---|
| "The River That Came Clean" | September 2, 1977 | 14x01 |
| "Blueprints In The Bloodstream" | September 9, 1977 | 14x02 |
| "40 Years Of Murder" | September 16, 1977 | 14x03 |
| "The Cry For Help" | September 30, 1977 | 14x04 |
| "The Sunspot Mystery" | October 7, 1977 | 14x05 |
| "The Rhine's Revenge" | October 21, 1977 | 14x06 |
| "Icarus' Children" | December 2, 1977 | 14x07 |
| "The Healing Nightmare" | December 9, 1977 | 14x08 |
| "The Great Wine Revolution" | December 23, 1977 | 14x09 |
| "Living Machines" | January 6, 1978 | 14x10 |
| "A Land For All Reasons" | January 20, 1978 | 14x11 |
| "I Don't Want To Be A Burden" | January 27, 1978 | 14x12 |
| "Zero G" | February 3, 1978 | 14x13 |
| "The Message In The Rocks" | February 17, 1978 | 14x14 |
| "The Eddystone Lights" | February 24, 1978 | 14x15 |
| "Light Of The 21St Century" | March 10, 1978 | 14x16 |
| "The New Breadline" | March 24, 1978 | 14x17 |
| "Now The Chips Are Down" | March 31, 1978 | 14x18 |
| "Explosions In The Mind" | July 14, 1978 | 14x19 |
| "One Small Step" | July 21, 1978 | 14x20 |
| "The Tsetse Trap" | July 28, 1978 | 14x21 |
| "A Whisper From Space" | August 4, 1978 | 14x22 |
| "Prisoners Of Hope" | August 11, 1978 | 14x23 |
| "On A Different Track" | August 18, 1978 | 14x24 |
| "Careering Into Science" | August 25, 1978 | 14x25 |
Season 15: 1978-1979
| Title | Original air date | Episode |
|---|---|---|
| "Cashing In On The Ocean" | September 1, 1978 | 15x01 |
| "Bags Of Life" | September 8, 1978 | 15x02 |
| "Innocent Slaughter?" | September 15, 1978 | 15x03 |
| "Beersheva Experiment" | November 3, 1978 | 15x04 |
| "Divers Do It Deeper" | November 10, 1978 | 15x05 |
| "The Big Sleep" | November 17, 1978 | 15x06 |
| "The Vital Spark" | November 24, 1978 | 15x07 |
| "The Red Deer Of Rhum" | December 29, 1978 | 15x08 |
| "The Forever Fuel" | February 26, 1979 | 15x09 |
| "In Search Of Pegasus" | March 5, 1979 | 15x10 |
| "The Keys Of Paradise" | March 12, 1979 | 15x11 |
| "Sweet Solutions" | March 19, 1979 | 15x12 |
| "Bronze Age Blast-Off" | March 26, 1979 | 15x13 |
| "The Real Bionic Man" | April 2, 1979 | 15x14 |
| "A Mediterranean Prospect" | April 9, 1979 | 15x15 |
| "Elements Of Risk" | April 23, 1979 | 15x16 |
| "Mr Ludwig's Tropical Dreamland" | April 30, 1979 | 15x17 |
| "Where Nothing Happens Twice" | May 7, 1979 | 15x18 |
| "Journey Through The Human Body" | May 14, 1979 | 15x19 |
| "The Fight To Be Male" | May 21, 1979 | 15x20 |
| "The Robots Are Coming" | May 28, 1979 | 15x21 |
Season 16: 1979-1980
| Title | Original air date | Episode |
|---|---|---|
| "The Mexican Oil Dance" | September 24, 1979 | 16x01 |
| "Tracks On The Oregon Trail" | October 1, 1979 | 16x02 |
| "The Race To Re-Shape Cars" | October 8, 1979 | 16x03 |
| "Dragnet For Diabetes" | October 15, 1979 | 16x04 |
| "Lost Waters Of The Nile" | October 22, 1979 | 16x05 |
| "Survival Of The Fastest" | October 29, 1979 | 16x06 |
| "A Touch Of Sensitivity" | November 5, 1979 | 16x07 |
| "A Treasury Of Trees" | November 12, 1979 | 16x08 |
| "Darkness Visible" | November 19, 1979 | 16x09 |
| "Uranium Goes Critical" | December 3, 1979 | 16x10 |
| "The Fat In The Fire" | December 10, 1979 | 16x11 |
| "Decade" | December 17, 1979 | 16x12 |
| "Ghost Of The Amoco Cadiz" | January 14, 1980 | 16x13 |
| "You Are Old, Father William" | January 21, 1980 | 16x14 |
| "Cleared For Take Off" | February 4, 1980 | 16x15 |
| "A Sporting Chance" | February 11, 1980 | 16x16 |
| "The Cancer Detectives Of Lin Xian" | February 18, 1980 | 16x17 |
| "The Big If" | February 25, 1980 | 16x18 |
| "Cash From Trash" | March 3, 1980 | 16x19 |
| "Encounter With Jupiter" | March 10, 1980 | 16x20 |
| "Portrait Of A Poison" | March 17, 1980 | 16x21 |
| "Magnet Earth" | March 24, 1980 | 16x22 |
Season 17: 1980-1981
| Title | Original air date | Episode |
|---|---|---|
| "Goodbye Gutenberg" | September 1, 1980 | 17x01 |
| "Invasion Of The Virions" | September 8, 1980 | 17x02 |
| "Beyond The Milky Way" | September 15, 1980 | 17x03 |
| "Little Boxes" | September 22, 1980 | 17x04 |
| "The Other Kenya" | September 29, 1980 | 17x05 |
| "Moving Still" | October 6, 1980 | 17x06 |
| "The Way Out" | October 13, 1980 | 17x07 |
| "The Dead Sea Lives" | October 20, 1980 | 17x08 |
| "Once In A Million Years" | October 27, 1980 | 17x09 |
| "Smokers' Luck" | November 3, 1980 | 17x10 |
| "Behind The Horoscope" | November 10, 1980 | 17x11 |
| "The Mondragon Experiment" | November 17, 1980 | 17x12 |
| "The Spike" | November 24, 1980 | 17x13 |
| "The Slatemakers" | December 1, 1980 | 17x14 |
| "Anatomy Of A Volcano" | December 15, 1980 | 17x15 |
| "Spend And Prosper" | January 5, 1981 | 17x16 |
| "A Whole New Medicine" | January 12, 1981 | 17x17 |
| "The Qualyub Project" | January 19, 1981 | 17x18 |
| "No One Will Take Me Seriously" | January 26, 1981 | 17x19 |
| "Living With Dying" | February 2, 1981 | 17x20 |
| "A Is For Atom, B Is For Bomb" | February 9, 1981 | 17x21 |
| "Who Will Deliver Your Baby?" | February 16, 1981 | 17x22 |
| "West Of Bangalore" | March 2, 1981 | 17x23 |
| "Gentlemen, Lift Your Skirts" | March 9, 1981 | 17x24 |
| "Hello Universe!" | March 16, 1981 | 17x25 |
| "Voices From Silent Hands" | March 23, 1981 | 17x26 |
| "Did Darwin Get It Wrong?" | March 30, 1981 | 17x27 |
| "East Of Bombay" | April 6, 1981 | 17x28 |
| "Resolution On Saturn, 1: The Rings" | April 11, 1981 | 17x29 |
| "Resolution On Saturn, 2: The Moons" | April 13, 1981 | 17x30 |
Season 18: 1981-1982
| Title | Original air date | Episode |
|---|---|---|
| "Heads I Win, Tails You Lose" | September 28, 1981 | 18x01 |
| "The Hunt For The Legion Killer" | October 5, 1981 | 18x02 |
| "Breaking In Children" | October 12, 1981 | 18x03 |
| "The Grid" | October 19, 1981 | 18x04 |
| "Butterflies Or Barley?" | October 26, 1981 | 18x05 |
| "Science For The People" | November 2, 1981 | 18x06 |
| "The Race To Ruin" | November 9, 1981 | 18x07 |
| "Death Of The Dinosaurs" | November 16, 1981 | 18x08 |
| "Feynman, The Pleasure Of Finding Things Out" | November 23, 1981 | 18x09 |
| "The Cornucopia" | November 30, 1981 | 18x10 |
| "A Race Against Time" | December 7, 1981 | 18x11 |
| "Painting By Numbers" | December 21, 1981 | 18x12 |
| "The Secret Of The Snake" | January 11, 1982 | 18x13 |
| "Finding A Voice" | January 18, 1982 | 18x14 |
| "The Sea Behind The Dunes" | January 25, 1982 | 18x15 |
| "Whatever Happened To The Energy Crisis?" | February 1, 1982 | 18x16 |
| "Notes Of A Biology Watcher" | February 8, 1982 | 18x17 |
| "The Cline Affair" | February 15, 1982 | 18x18 |
| "The Million Murdering Death" | February 22, 1982 | 18x19 |
| "Shots In The Dark" | March 1, 1982 | 18x20 |
| "The Victims" | March 8, 1982 | 18x21 |
| "The Future-Made In Japan?" | March 15, 1982 | 18x22 |
| "The Private Face Of Medicine" | March 22, 1982 | 18x23 |
| "The Fatal Bargain" | April 5, 1982 | 18x24 |
Season 19: 1982-1983
| Title | Original air date | Episode |
|---|---|---|
| "The Miracle Of Life" | October 11, 1982 | 19x01 |
| "The Case Of The UFO's" | October 18, 1982 | 19x02 |
| "A Killing Rain" | October 25, 1982 | 19x03 |
| "Intimate Relations" | November 1, 1982 | 19x04 |
| "The Scientist And The Baby" | November 8, 1982 | 19x05 |
| "Brave New Babies?" | November 15, 1982 | 19x06 |
| "The Professor Of Surgery" | November 29, 1982 | 19x07 |
| "The Chopper" | December 6, 1982 | 19x08 |
| "The State Of The Planet" | December 13, 1982 | 19x09 |
| "The Mysterious Mr Tesla" | December 20, 1982 | 19x10 |
| "Sizewell Under Pressure" | January 10, 1983 | 19x11 |
| "Tropical Time Machine" | January 17, 1983 | 19x12 |
| "The Geneva Event" | January 24, 1983 | 19x13 |
| "How Much Can You Drink?" | February 7, 1983 | 19x14 |
| "Talking Turtle" | February 14, 1983 | 19x15 |
| "What Little Girls Are Made Of" | February 21, 1983 | 19x16 |
| "British Science-On The Wrong Track?" | February 28, 1983 | 19x17 |
| "The Great Plains Massacre" | March 7, 1983 | 19x18 |
| "Hard Rock" | March 14, 1983 | 19x19 |
| "Better Mind The Computer" | March 21, 1983 | 19x20 |
| "Madness On Trial" | April 11, 1983 | 19x21 |
| "Sixty Minutes To Meltdown" | April 18, 1983 | 19x22 |
| "Killer In The Village" | April 25, 1983 | 19x23 |
Season 20: 1983-1984
| Title | Original air date | Episode |
|---|---|---|
| "The Case Of E.S.P." | September 26, 1983 | 20x01 |
| "The Artificial Heart" | October 3, 1983 | 20x02 |
| "Dr Priestley And The Breath Of Life" | October 10, 1983 | 20x03 |
| "Professor Hawking's Universe" | October 17, 1983 | 20x04 |
| "The Cruel Choice" | October 24, 1983 | 20x05 |
| "A Child's Guide To Languages" | October 31, 1983 | 20x06 |
| "China's Child" | November 7, 1983 | 20x07 |
| "The Earthquake Connection" | November 14, 1983 | 20x08 |
| "Prisoner Or Patient?" | November 28, 1983 | 20x09 |
| "Cancer, The Pattern In The Genes" | December 5, 1983 | 20x10 |
| "The Academy" | December 12, 1983 | 20x11 |
| "The Intelligence Man" | January 9, 1984 | 20x12 |
| "Microworld" | January 16, 1984 | 20x13 |
| "A New Green Revolution?" | January 23, 1984 | 20x14 |
| "Spies In The Wires" | January 30, 1984 | 20x15 |
| "Valley Of The Inca" | February 13, 1984 | 20x16 |
| "Conquest Of The Parasites" | February 27, 1984 | 20x17 |
| "Reflections On A River" | March 5, 1984 | 20x18 |
| "A Normal Face" | March 12, 1984 | 20x19 |
| "Prisoners Of Incest" | March 19, 1984 | 20x20 |
| "Signs Of The Apes, Songs Of The Whales" | March 26, 1984 | 20x21 |
| "Professor Bonner And The Slime Moulds" | April 9, 1984 | 20x22 |
| "The Mind Of A Murderer, 1: The Case Of The Hillside Strangler" | April 16, 1984 | 20x23 |
| "The Mind Of A Murderer, 2: The Mask Of Madness" | April 17, 1984 | 20x24 |
| "A Cruel Inheritance" | April 30, 1984 | 20x25 |
| "The Malvern Link" | May 7, 1984 | 20x26 |
Season 21: 1984-1985
| Title | Original air date | Episode |
|---|---|---|
| "Contented Cows And Other Animals" | November 5, 1984 | 21x01 |
| "Picking Winners" | November 12, 1984 | 21x02 |
| "The Brain Puzzle" | November 19, 1984 | 21x03 |
| "Global Village" | November 26, 1984 | 21x04 |
| "Ivan" | December 3, 1984 | 21x05 |
| "A Mathematical Mystery Tour" | December 10, 1984 | 21x06 |
| "Supercharged, The Grand Prix Car (1924-1939)" | December 17, 1984 | 21x07 |
| "Colourful Notions" | January 7, 1985 | 21x08 |
| "A World Of Their Own" | January 14, 1985 | 21x09 |
| "Decoding Danebury" | January 21, 1985 | 21x10 |
| "A Mission To Heal" | January 28, 1985 | 21x11 |
| "Mystery Of The Left Hand" | February 4, 1985 | 21x12 |
| "The Theatre Of War" | February 11, 1985 | 21x13 |
| "The Careful Predator" | February 25, 1985 | 21x14 |
| "What Einstein Never Knew" | March 4, 1985 | 21x15 |
| "Eurekaaargh!" | March 11, 1985 | 21x16 |
| "Careering On" | March 18, 1985 | 21x17 |
| "How To Film The Impossible" | March 25, 1985 | 21x18 |
| "The Food Allergy War" | April 1, 1985 | 21x19 |
| "The Goddess Of The Earth" | April 15, 1985 | 21x20 |
| "Iras, The Supercooled Eye" | April 22, 1985 | 21x21 |
| "A Prize Discovery" | April 29, 1985 | 21x22 |
| "Twenty-First Birthday" | May 20, 1985 | 21x23 |
Season 22: 1985-1986
| Title | Original air date | Episode |
|---|---|---|
| "Are You A Racist?" | January 6, 1986 | 22x01 |
| "Genesis" | January 13, 1986 | 22x02 |
| "Bitter Cold" | January 20, 1986 | 22x03 |
| "The Mould, The Myth And The Microbe" | January 27, 1986 | 22x04 |
| "Outbreak, The Microbe Masters The Mould" | February 3, 1986 | 22x05 |
| "The Wrong Stuff" | February 10, 1986 | 22x06 |
| "Science...Fiction?" | February 17, 1986 | 22x07 |
| "The Children Of Eve" | February 24, 1986 | 22x08 |
| "The New Face Of Leprosy" | March 3, 1986 | 22x09 |
| "Hi-Tech A La Francaise" | March 10, 1986 | 22x10 |
| "In The Wake Of HMS Sheffield" | March 17, 1986 | 22x11 |
| "AIDS, A Strange And Deadly Virus" | March 24, 1986 | 22x12 |
| "The Case Of The Frozen Addict" | April 7, 1986 | 22x13 |
| "Nice Guys Finish First" | April 14, 1986 | 22x14 |
| "The Men Who Bottled A Cow" | April 21, 1986 | 22x15 |
| "Twice Five Plus The Wings Of A Bird" | April 28, 1986 | 22x16 |
| "What Makes An Animal Smart?" | May 12, 1986 | 22x17 |
| "A Handful Of Sugar With A Pinch Of Salt" | May 19, 1986 | 22x18 |
| "Uranus Encounter" | May 26, 1986 | 22x19 |
| "Who Built Stonehenge?" | June 9, 1986 | 22x20 |
| "Battered Baby, 2: Breaking The Chain" | June 23, 1986 | 22x22 |
| "Battered Baby, 1: From Generation To Generation" | June 23, 1986 | 22x21 |
| "Doctors To Be" | June 30, 1986 | 22x23 |
Season 23: 1986-1987
| Title | Original air date | Episode |
|---|---|---|
| "The Twenty-Five Hour Clock" | January 5, 1987 | 23x01 |
| "The Search For The Disappeared" | January 12, 1987 | 23x02 |
| "The Blind Watchmaker" | January 19, 1987 | 23x03 |
| "Riding The Stack" | January 26, 1987 | 23x04 |
| "Bruno Bettelheim, 1: The Man Who Cared For Children" | February 2, 1987 | 23x05 |
| "Bruno Bettelheim, 2: A Sense Of Surviving" | February 9, 1987 | 23x06 |
| "Energy From Outer Space" | February 16, 1987 | 23x07 |
| "The Return Of The Osprey" | February 23, 1987 | 23x08 |
| "Can AIDS Be Stopped?" | March 2, 1987 | 23x09 |
| "Police Stress, John Wayne Syndrome" | March 9, 1987 | 23x10 |
| "To Engineer Is Human" | March 16, 1987 | 23x11 |
| "The Magma Chamber" | March 23, 1987 | 23x12 |
| "Broken Images" | March 30, 1987 | 23x13 |
| "Trial Babies" | April 6, 1987 | 23x14 |
| "After Chernobyl, Closer To Home" | April 13, 1987 | 23x15 |
| "Making Sex Pay" | May 11, 1987 | 23x16 |
| "The Anthropic Principle" | May 18, 1987 | 23x17 |
| "Aircrash, The Burning Issue" | June 1, 1987 | 23x18 |
| "Riddle Of The Joints" | June 8, 1987 | 23x19 |
| "To Catch A Falling Star" | June 15, 1987 | 23x20 |
| "In The Light Of New Information" | June 22, 1987 | 23x21 |
| "Janice's Choice" | June 29, 1987 | 23x22 |
Season 24: 1987-1988
| Title | Original air date | Episode |
|---|---|---|
| "The Transplanted Brain" | January 4, 1988 | 24x01 |
| "Death Of A Star" | January 11, 1988 | 24x02 |
| "Playing With Madness" | January 18, 1988 | 24x03 |
| "The Canal In The Jungle" | January 25, 1988 | 24x04 |
| "Death Of The Working Classes" | February 1, 1988 | 24x05 |
| "The Greenhouse Effect" | February 8, 1988 | 24x06 |
| "Struggling For Control" | February 15, 1988 | 24x07 |
| "Thinking" | February 22, 1988 | 24x08 |
| "Patients On Trial" | February 29, 1988 | 24x09 |
| "Purple Warrior, Rules Of Engagement" | March 7, 1988 | 24x10 |
| "Purple Warrior, Limited War" | March 14, 1988 | 24x11 |
| "The Heart Of Another" | March 28, 1988 | 24x12 |
| "Easter Island, The Secrets" | April 11, 1988 | 24x13 |
| "Easter Island, The Story" | April 18, 1988 | 24x14 |
| "Cancer At Bay" | May 4, 1988 | 24x15 |
| "Traces Of Murder" | May 9, 1988 | 24x16 |
| "The Hope Of Progress" | May 16, 1988 | 24x17 |
| "A Newsday Revolution" | May 23, 1988 | 24x18 |
| "A Good Test?" | June 6, 1988 | 24x19 |
| "Superconductor, The Race For The Prize" | June 13, 1988 | 24x20 |
| "Believe Me" | June 27, 1988 | 24x21 |
Season 25: 1988-1989
| Title | Original air date | Episode |
|---|---|---|
| "The Diary Of Discovery" | September 28, 1988 | 25x01 |
| "The Book Of Man" | January 9, 1989 | 25x02 |
| "The Poison That Waits" | January 16, 1989 | 25x03 |
| "Perils Of The Deep" | January 23, 1989 | 25x04 |
| "Smart Weapons" | January 30, 1989 | 25x05 |
| "Wasting The Alps" | February 6, 1989 | 25x06 |
| "In The Last Resort" | February 13, 1989 | 25x07 |
| "Gaze In Wonder" | February 20, 1989 | 25x08 |
| "In My Lifetime?" | February 27, 1989 | 25x09 |
| "Concerto" | March 6, 1989 | 25x10 |
| "Black Schizophrenia" | March 13, 1989 | 25x11 |
| "Trial In The Jungle" | March 20, 1989 | 25x12 |
| "Who Will Make Me Better?" | April 3, 1989 | 25x13 |
| "A Wonderful Life" | April 17, 1989 | 25x14 |
| "Why Buildings Make You Sick" | April 24, 1989 | 25x15 |
| "Jubilee" | May 8, 1989 | 25x16 |
| "Crash" | May 15, 1989 | 25x17 |
| "The New Sixth Sense" | May 22, 1989 | 25x18 |
| "Clive Sinclair, The Anatomy Of An Inventor" | June 12, 1989 | 25x19 |
| "Newpin, A Lifeline" | June 19, 1989 | 25x20 |
| "Time Of Darkness" | June 26, 1989 | 25x21 |
Season 26: 1989-1990
| Title | Original air date | Episode |
|---|---|---|
| "Oil Spill" | January 8, 1990 | 26x01 |
| "Medicine 2000" | January 15, 1990 | 26x02 |
| "Food Irradiation, Would You Buy It?" | January 22, 1990 | 26x03 |
| "From Earth To Miranda" | January 29, 1990 | 26x04 |
| "Encounter With Neptune" | February 5, 1990 | 26x05 |
| "Guess What's Coming To Dinner" | February 12, 1990 | 26x06 |
| "The First 14 Days" | February 19, 1990 | 26x07 |
| "The 10,000 Year Test" | March 5, 1990 | 26x08 |
| "Hurricane!" | March 12, 1990 | 26x09 |
| "The Britannic Greenhouse" | March 19, 1990 | 26x10 |
| "Cold Fusion" | March 26, 1990 | 26x11 |
| "The Quake Of 89, The Final Warning?" | April 2, 1990 | 26x12 |
| "The Sharpest Show Of The Universe" | April 9, 1990 | 26x13 |
| "The Company Of Ants And Bees" | April 23, 1990 | 26x14 |
| "The Intelligent Island" | April 30, 1990 | 26x15 |
| "Legacy Of A Volcano" | May 14, 1990 | 26x16 |
| "Do Cows Make You Mad?" | May 21, 1990 | 26x17 |
| "The Child Mothers" | June 4, 1990 | 26x18 |
| "Signs Of Life" | June 11, 1990 | 26x19 |
| "AIDS, A Quest For A Cure" | June 25, 1990 | 26x20 |
Season 27: 1990-1991
| Title | Original air date | Episode |
|---|---|---|
| "Sudden Death" | January 7, 1991 | 27x01 |
| "Keen As Mustard" | January 14, 1991 | 27x02 |
| "Smokers Can Harm Your Health" | January 21, 1991 | 27x03 |
| "Coming In From The Cold" | January 28, 1991 | 27x04 |
| "Small Problem With The Mirror" | February 4, 1991 | 27x05 |
| "California Dreaming" | February 11, 1991 | 27x06 |
| "The Day The Earth Melted" | February 18, 1991 | 27x07 |
| "The Curse Of Karash" | February 25, 1991 | 27x08 |
| "Playing At Noah" | March 4, 1991 | 27x09 |
| "Cashing In On Paradise" | March 11, 1991 | 27x10 |
| "The Terracotta Time Machine" | March 18, 1991 | 27x11 |
| "Measuring The Roof Of The World" | March 25, 1991 | 27x12 |
| "The First Americans" | April 15, 1991 | 27x13 |
| "Inside Chernobyl Sarcophagus" | April 22, 1991 | 27x14 |
| "Colonising Cyberspace" | April 29, 1991 | 27x15 |
| "Emerging Viruses" | May 13, 1991 | 27x16 |
| "Camelford, A Bitter Aftertaste" | May 20, 1991 | 27x17 |
| "Of Big Bangs, Stick Men And Galactic Holes" | June 3, 1991 | 27x18 |
| "Food For Thought" | June 10, 1991 | 27x19 |
| "The Long Road To The West" | June 17, 1991 | 27x20 |
| "Half Hearted About Semi-Skimmed" | June 24, 1991 | 27x21 |
| "T-Rex Exposed" | July 1, 1991 | 27x22 |
Season 28: 1991-1992
| Title | Original air date | Episode |
|---|---|---|
| "The Shadow Of Breast Cancer" | January 6, 1992 | 28x01 |
| "Pest Wars" | January 13, 1992 | 28x02 |
| "Molecules With Sunglasses" | January 20, 1992 | 28x03 |
| "In Search Of The Noble Savage" | January 27, 1992 | 28x04 |
| "Malaria, Battle Of The Merozoites" | February 3, 1992 | 28x05 |
| "The Black Sun" | February 17, 1992 | 28x06 |
| "Hitler's Bomb" | February 24, 1992 | 28x07 |
| "An Expensive Theology" | March 2, 1992 | 28x08 |
| "The Strange Life And Death Of Dr Turing" | March 9, 1992 | 28x09 |
| "Hot Jam In The Doughnut" | March 16, 1992 | 28x10 |
| "Diet For A Lifetime" | March 30, 1992 | 28x11 |
| "Before Babel" | April 6, 1992 | 28x12 |
| "The Man Who Moved The Mountains" | April 13, 1992 | 28x13 |
| "Iceman" | April 27, 1992 | 28x14 |
| "Taking The Credit" | May 11, 1992 | 28x15 |
| "Fast Life In The Food Chain" | May 18, 1992 | 28x16 |
| "Dodging Doomsday" | June 1, 1992 | 28x17 |
| "A Question Of Sport..." | June 8, 1992 | 28x18 |
| "Genes R Us" | June 15, 1992 | 28x19 |
Season 29: 1992-1993
| Title | Original air date | Episode |
|---|---|---|
| "The Truth About Sex" | December 3, 1992 | 29x01 |
| "Awakening The Frozen Addicts" | January 4, 1993 | 29x02 |
| "Cheating Time" | January 11, 1993 | 29x03 |
| "TB, The Forgotten Plague" | January 18, 1993 | 29x04 |
| "No Ordinary Genius, Episode 1" | January 25, 1993 | 29x05 |
| "No Ordinary Genius, Episode 2" | February 1, 1993 | 29x06 |
| "Mars Alive" | February 8, 1993 | 29x07 |
| "Suggers, Fruggers And Data-Muggers" | February 15, 1993 | 29x08 |
| "The Pyramid Builders" | February 22, 1993 | 29x09 |
| "Here Be Monsters" | March 1, 1993 | 29x10 |
| "Iceman" | March 8, 1993 | 29x11 |
| "Whatever Happened To Star Wars?" | March 15, 1993 | 29x12 |
| "Resurrecting The Dead Sea Scrolls" | March 22, 1993 | 29x13 |
| "Dante Goes To Hell" | March 29, 1993 | 29x14 |
| "Ghosts In The Dinosaur Graveyard" | April 5, 1993 | 29x15 |
| "The New Alchemists" | April 19, 1993 | 29x16 |
| "Allergic To The Twentieth Century" | May 10, 1993 | 29x17 |
| "Wot U Lookin At?" | May 24, 1993 | 29x18 |
| "The Electronic Frontier" | June 7, 1993 | 29x19 |
| "A Vital Poison" | June 14, 1993 | 29x20 |
| "Chimp Talk" | June 21, 1993 | 29x21 |
| "Life Is Impossible" | June 28, 1993 | 29x22 |
Season 30: 1993-1994
| Title | Original air date | Episode |
|---|---|---|
| "Small Arms, Soft Targets" | January 10, 1994 | 30x01 |
| "The Last Mammoth" | January 17, 1994 | 30x02 |
| "The Man Who Made Up His Mind" | January 24, 1994 | 30x03 |
| "Genie, Secret Of The Wild Child" | January 31, 1994 | 30x04 |
| "Death Wish, The Untold Story" | February 7, 1994 | 30x05 |
| "Air Crash, The Deadly Puzzle" | February 14, 1994 | 30x06 |
| "Hunt For The Doomsday Asteroid" | February 28, 1994 | 30x07 |
| "Hubble Vision" | March 7, 1994 | 30x08 |
| "Some Liked It Hot" | March 14, 1994 | 30x09 |
| "Too Close To The Sun" | March 21, 1994 | 30x10 |
| "Sir Walter's Journey, A Genetic Map Of Britain" | March 28, 1994 | 30x11 |
| "After The Flood" | April 18, 1994 | 30x12 |
| "Against The Clock" | April 25, 1994 | 30x13 |
| "Auschwitz, The Blueprints Of Genocide" | May 9, 1994 | 30x14 |
| "Ulcer Wars" | May 16, 1994 | 30x15 |
| "30Th Anniversary, The Far Side" | May 23, 1994 | 30x16 |
Season 31: 1994-1995
| Title | Original air date | Episode |
|---|---|---|
| "Deaf Whale, Dead Whale" | November 7, 1994 | 31x01 |
| "Whispers Of Creation" | November 14, 1994 | 31x02 |
| "The Predator" | November 21, 1994 | 31x03 |
| "Close Encounters" | November 28, 1994 | 31x04 |
| "Orange Sherbert Kisses" | December 12, 1994 | 31x05 |
| "Designer Wines" | December 19, 1994 | 31x06 |
| "Tibet, The Ice Mother" | January 9, 1995 | 31x07 |
| "Russia's Deep Secrets" | January 16, 1995 | 31x08 |
| "Bones Of Contention" | January 23, 1995 | 31x09 |
| "Siamese Twins" | January 30, 1995 | 31x10 |
| "Too Big Too Soon?" | February 20, 1995 | 31x11 |
| "Farewell Fantastic Venus" | February 27, 1995 | 31x12 |
| "Exodus" | March 6, 1995 | 31x13 |
| "The Betrayers" | March 13, 1995 | 31x14 |
| "Icon Earth" | March 20, 1995 | 31x15 |
| "The I-Bomb" | March 27, 1995 | 31x16 |
| "Foetal Attraction" | April 3, 1995 | 31x17 |
| "Cracks In The Crust" | April 10, 1995 | 31x18 |
| "Hearing Voices" | April 24, 1995 | 31x19 |
Season 32: 1995-1996
| Title | Original air date | Episode |
|---|---|---|
| "Liar" | October 30, 1995 | 32x01 |
| "The Human Laboratory" | November 6, 1995 | 32x02 |
| "Nanotopia" | November 13, 1995 | 32x03 |
| "Hunt For The Doomsday Asteroid" | November 20, 1995 | 32x04 |
| "A Code In The Nose" | November 27, 1995 | 32x05 |
| "AIDS, Behind Closed Doors" | December 4, 1995 | 32x06 |
| "The Runaway Mountain" | December 11, 1995 | 32x07 |
| "The Butchers Of Boxgrove" | January 8, 1996 | 32x08 |
| "Fermat's Last Theorem" | January 15, 1996 | 32x09 |
| "A Miracle For Cancer?" | January 22, 1996 | 32x10 |
| "Nature's Numbers" | January 29, 1996 | 32x11 |
| "The Gene Race" | February 5, 1996 | 32x12 |
| "Masters Of The Ionosphere" | February 12, 1996 | 32x13 |
| "Assault On The Male" | February 26, 1996 | 32x14 |
| "Death By Design" | March 4, 1996 | 32x15 |
| "The Planet Hunters" | March 11, 1996 | 32x16 |
| "Einstein, The Miracle Year" | March 17, 1996 | 32x17 |
| "Einstein, Fame" | March 18, 1996 | 32x18 |
| "Inside Chernobyl Sarcophagus" | March 25, 1996 | 32x19 |
| "Fall-Out From Chernobyl" | April 1, 1996 | 32x20 |
| "The Science Of Star Trek" | August 26, 1996 | 32x21 |
Season 33: 1996-1997
| Title | Original air date | Episode |
|---|---|---|
| "TV Is Dead, Long Live TV" | November 2, 1996 | 33x01 |
| "Aliens From Mars" | November 11, 1996 | 33x02 |
| "Living Death" | November 25, 1996 | 33x03 |
| "The Time Lords" | December 2, 1996 | 33x04 |
| "Noah's Flood" | December 16, 1996 | 33x05 |
| "Psychedelic Science" | February 27, 1997 | 33x06 |
| "Fat Cats, Thin Mice" | March 6, 1997 | 33x07 |
| "The Shipwreck" | March 13, 1997 | 33x08 |
| "Genius Of The Jet" | March 20, 1997 | 33x09 |
| "Smallpox On Death Row" | March 27, 1997 | 33x10 |
| "Silent Children, New Language" | April 3, 1997 | 33x11 |
| "Turned On By Danger" | April 17, 1997 | 33x12 |
| "A Perfect Oil Spill" | April 24, 1997 | 33x13 |
| "The Great Balloon Race" | May 1, 1997 | 33x14 |
| "Computers Don't Bite, Inside The Internet" | May 17, 1997 | 33x15 |
| "Mars, Death Or Glory?" | July 5, 1997 | 33x16 |
Season 34: 1997-1998
| Title | Original air date | Episode |
|---|---|---|
| "Crater Of Death" | September 11, 1997 | 34x01 |
| "Mind Over Body" | September 18, 1997 | 34x02 |
| "Out Of Asia" | September 25, 1997 | 34x03 |
| "The Virus That Cures" | October 9, 1997 | 34x04 |
| "The Man Who Lost His Body" | October 16, 1997 | 34x05 |
| "Dawn Of The Clone Age" | October 23, 1997 | 34x06 |
| "Crash" | January 12, 1998 | 34x07 |
| "Saddam's Secrets" | February 19, 1998 | 34x08 |
| "Dr Miller And The Islanders" | February 26, 1998 | 34x09 |
| "The Rainmaker" | March 5, 1998 | 34x10 |
| "Hopeful Monsters" | March 19, 1998 | 34x11 |
| "Premature Babies, The Limits To Birth" | March 26, 1998 | 34x12 |
| "Overkill" | April 2, 1998 | 34x13 |
| "The Curse Of Vesuvius" | April 16, 1998 | 34x14 |
| "Mir Mortals" | April 23, 1998 | 34x15 |
| "The Computer That Ate Hollywood" | April 30, 1998 | 34x16 |
| "Magic Bullet" | May 7, 1998 | 34x17 |
| "The Gulf War Jigsaw" | May 14, 1998 | 34x18 |
Season 35: 1998-1999
| Title | Original air date | Episode |
|---|---|---|
| "Sexual Chemistry" | September 10, 1998 | 35x01 |
| "Chimps On Death Row" | October 1, 1998 | 35x02 |
| "Dinosaurs In Your Garden" | October 8, 1998 | 35x03 |
| "Mosquito!" | October 15, 1998 | 35x04 |
| "The Life And Times Of Life And Time" | October 22, 1998 | 35x05 |
| "Thalidomide, A Necessary Evil" | October 29, 1998 | 35x06 |
| "Beyond A Joke" | November 5, 1998 | 35x07 |
| "From Here To Infinity" | January 28, 1999 | 35x08 |
| "Pandemic" | February 4, 1999 | 35x09 |
| "Elephants Or Ivory" | February 11, 1999 | 35x10 |
| "Electric Heart" | February 18, 1999 | 35x11 |
| "Sudden Death" | February 25, 1999 | 35x12 |
| "New Star In Orbit" | March 11, 1999 | 35x13 |
| "New Asteroid Danger" | March 18, 1999 | 35x14 |
| "Skeleton Key" | March 25, 1999 | 35x15 |
| "Designer Babies" | April 7, 1999 | 35x16 |
| "Wings Of Angels" | August 1, 1999 | 35x17 |
Season 36: 1999-2000
| Title | Original air date | Episode |
|---|---|---|
| "Mistaken Identity" | November 11, 1999 | 36x01 |
| "Volcanoes Of The Deep" | November 18, 1999 | 36x02 |
| "Anatomy Of An Avalanche" | November 25, 1999 | 36x03 |
| "The Midas Formula" | December 2, 1999 | 36x04 |
| "Breath Of Life" | January 13, 2000 | 36x05 |
| "Lost City Of Nasca" | January 20, 2000 | 36x06 |
| "The Diamond Makers" | January 27, 2000 | 36x07 |
| "Supervolcanos" | February 3, 2000 | 36x08 |
| "Miracle In Orbit" | February 10, 2000 | 36x09 |
| "Complete Obsession, Body Dysmorphia" | February 17, 2000 | 36x10 |
| "Is GM Safe?" | March 9, 2000 | 36x11 |
| "Planet Hunters" | March 16, 2000 | 36x12 |
| "Science Of Addiction, Constant Craving" | March 30, 2000 | 36x13 |
| "Moon Children" | April 4, 2000 | 36x14 |
| "Inside The Internet" | June 10, 2000 | 36x15 |
| "Science Zone, Aliens From Mars" | June 27, 2000 | 36x16 |
Season 37: 2000-2001
| Title | Original air date | Episode |
|---|---|---|
| "Mega-Tsunami, Wave Of Destruction" | October 12, 2000 | 37x01 |
| "Conjoined Twins" | October 19, 2000 | 37x02 |
| "The Lost World Of Lake Vostok" | October 26, 2000 | 37x03 |
| "Vanished, The Plane That Disappeared" | November 2, 2000 | 37x04 |
| "The Secret Treasures Of Zeugma" | November 9, 2000 | 37x05 |
| "The Valley Of Life Or Death" | November 16, 2000 | 37x06 |
| "Extreme Dinosaurs" | November 23, 2000 | 37x07 |
| "Supermassive Black Holes" | November 30, 2000 | 37x08 |
| "The Boy Who Was Turned Into A Girl" | December 7, 2000 | 37x09 |
| "Atlantis Reborn Again" | December 14, 2000 | 37x10 |
| "The Mystery Of The Miami Circle" | January 25, 2001 | 37x11 |
| "The Missing Link" | February 1, 2001 | 37x12 |
| "Killer Algae" | February 8, 2001 | 37x13 |
| "Ecstasy And Agony" | February 15, 2001 | 37x14 |
| "Snowball Earth" | February 22, 2001 | 37x15 |
| "Taming The Problem Child" | March 8, 2001 | 37x16 |
Season 38: 2001-2002
| Title | Original air date | Episode |
|---|---|---|
| "The Mystery Of The Persian Mummy" | September 20, 2001 | 38x01 |
| "The Ape That Took Over The World" | October 4, 2001 | 38x02 |
| "Life Blood" | October 11, 2001 | 38x03 |
| "The Death Star" | October 18, 2001 | 38x04 |
| "Cloning The First Human" | October 25, 2001 | 38x05 |
| "Helike, The Real Atlantis" | January 10, 2002 | 38x06 |
| "Volcano Hell" | January 17, 2002 | 38x07 |
| "Fatbusters" | January 24, 2002 | 38x08 |
| "The Lost Pyramids Of Caral" | January 31, 2002 | 38x09 |
| "Death Of The Iceman" | February 7, 2002 | 38x10 |
| "Parallel Universes" | February 14, 2002 | 38x11 |
| "The Dinosaur That Fooled The World" | February 21, 2002 | 38x12 |
| "The Fall Of The World Trade Center" | March 7, 2002 | 38x13 |
| "Archimedes' Secret" | March 14, 2002 | 38x14 |
| "The Mystery Of The Jurassic" | March 28, 2002 | 38x15 |
| "Killer Lakes" | April 4, 2002 | 38x16 |
| "The A6 Murder" | May 16, 2002 | 38x17 |
| "The England Patient" | May 23, 2002 | 38x18 |
Season 39: 2002-2003
| Title | Original air date | Episode |
|---|---|---|
| "Horizon Revisited, A Tale Of Two Feathers" | October 18, 2002 | 39x01 |
| "Horizon Revisited, Mega Tsunami: Coming To A Beach Near You" | October 25, 2002 | 39x02 |
| "Freak Wave" | November 14, 2002 | 39x03 |
| "Stone Age Columbus" | November 21, 2002 | 39x04 |
| "Homeopathy, The Test" | November 26, 2002 | 39x05 |
| "Horizon Revisited, Back To The Dark Ages" | November 29, 2002 | 39x06 |
| "The Day The Earth Nearly Died" | December 5, 2002 | 39x07 |
| "Horizon Revisited, Dawn Of The Dinosaurs" | December 6, 2002 | 39x08 |
| "The Secret Of El Dorado" | December 19, 2002 | 39x09 |
| "The Mystery Of Easter Island" | January 9, 2003 | 39x10 |
| "Living Nightmare" | January 16, 2003 | 39x11 |
| "Averting Armageddon" | January 23, 2003 | 39x12 |
| "Dirty Bomb" | January 30, 2003 | 39x13 |
| "Sexual Chemistry" | February 13, 2003 | 39x14 |
| "The Day We Learned To Think" | February 20, 2003 | 39x15 |
| "Horizon Revisited, You Do As You Are Told: Jonathan Miller And The Milgram Experiment" | February 27, 2003 | 39x17 |
| "Trial And Error, The Rise And Fall Of Gene Therapy" | February 27, 2003 | 39x16 |
| "Earthquake Storms" | March 6, 2003 | 39x19 |
| "Horizon Revisited, The Human Genome Project" | March 6, 2003 | 39x18 |
| "Horizon Revisited, Michael Adler On AIDS" | March 13, 2003 | 39x20 |
| "Life On Mars" | March 27, 2003 | 39x21 |
| "The Secret Life Of Caves" | April 3, 2003 | 39x22 |
| "God On The Brain" | April 17, 2003 | 39x23 |
| "Flight 587" | May 8, 2003 | 39x24 |
| "SARS, The True Story" | May 29, 2003 | 39x25 |
Season 40: 2003-2004
| Title | Original air date | Episode |
|---|---|---|
| "The Big Chill" | November 13, 2003 | 40x01 |
| "The Bible Code" | November 20, 2003 | 40x02 |
| "Last Flight Of Columbia" | November 27, 2003 | 40x03 |
| "The Hunt For The AIDS Vaccine" | December 4, 2003 | 40x04 |
| "Percy Pilcher's Flying Machine" | December 11, 2003 | 40x05 |
| "Time Trip" | December 18, 2003 | 40x06 |
| "The Demonic Ape" | January 8, 2004 | 40x07 |
| "Moscow Theatre Siege" | January 15, 2004 | 40x08 |
| "The Atkins Diet" | January 22, 2004 | 40x09 |
| "Secrets Of The Star Disc" | January 29, 2004 | 40x10 |
| "The Dark Secret Of Hendrik Schön" | February 5, 2004 | 40x11 |
| "Thalidomide, A Second Chance?" | February 12, 2004 | 40x12 |
| "Diamond Labs" | March 4, 2004 | 40x13 |
| "T Rex, Warrior Or Wimp?" | March 11, 2004 | 40x14 |
| "Project Poltergeist" | March 18, 2004 | 40x15 |
| "The Truth Of Troy" | March 25, 2004 | 40x16 |
Season 41: 2004-2005
| Title | Original air date | Episode |
|---|---|---|
| "The Truth About Vitamins" | September 16, 2004 | 41x01 |
| "King Solomon's Tablet Of Stone" | September 22, 2004 | 41x02 |
| "Derek Tastes Of Earwax" | September 30, 2004 | 41x03 |
| "What Really Killed The Dinosaurs?" | October 7, 2004 | 41x04 |
| "Making Millions The Easy Way" | October 14, 2004 | 41x05 |
| "Saturn, Lord Of The Rings" | October 21, 2004 | 41x06 |
| "The Hunt For The Supertwister" | October 28, 2004 | 41x07 |
| "Dr Money And The Boy With No Penis" | November 4, 2004 | 41x08 |
| "Global Dimming" | January 13, 2005 | 41x09 |
| "Einstein's Unfinished Symphony" | January 20, 2005 | 41x10 |
| "Einstein's Equation Of Life And Death" | January 27, 2005 | 41x11 |
| "Living With ADHD" | February 3, 2005 | 41x12 |
| "Neanderthal" | February 10, 2005 | 41x13 |
| "An Experiment To Save The World" | February 17, 2005 | 41x14 |
| "Who's Afraid Of Designer Babies?" | February 24, 2005 | 41x15 |
| "The Lost Civilisation Of Peru" | March 3, 2005 | 41x16 |
| "The Next Megaquake" | May 22, 2005 | 41x17 |
| "Does The MMR Jab Cause Autism?" | May 29, 2005 | 41x18 |
| "Malaria, Defeating The Curse" | June 5, 2005 | 41x19 |
Season 42: 2005-2006
| Title | Original air date | Episode |
|---|---|---|
| "Tsunami, Naming The Dead" | September 8, 2005 | 42x01 |
| "The Hawking Paradox" | September 15, 2005 | 42x02 |
| "The Mystery Of The Human Hobbit" | September 22, 2005 | 42x03 |
| "The Doctor Who Makes People Walk Again?" | September 29, 2005 | 42x04 |
| "Can Fish Make My Child Smart?" | October 6, 2005 | 42x05 |
| "Madagascar, A Treetop Odyssey" | October 13, 2005 | 42x06 |
| "Titan, A Place Like Home?" | October 20, 2005 | 42x07 |
| "The 7/7 Bombers, A Psychological Investigation" | October 27, 2005 | 42x08 |
| "The Ghost In Your Genes" | November 3, 2005 | 42x09 |
| "Life And Times Of El Nino" | January 3, 2006 | 42x10 |
| "Space Tourists" | January 12, 2006 | 42x11 |
| "Waiting For A Heartbeat" | January 19, 2006 | 42x12 |
| "A War On Science" | January 26, 2006 | 42x13 |
| "The Lost City Of New Orleans" | February 2, 2006 | 42x14 |
| "Most Of Our Universe Is Missing" | February 9, 2006 | 42x15 |
| "The Woman Who Thinks Like A Cow" | June 8, 2006 | 42x16 |
| "The Genius Sperm Bank" | June 15, 2006 | 42x17 |
| "Bye Bye, Planet Pluto" | June 22, 2006 | 42x18 |
| "We Love Cigarettes" | June 29, 2006 | 42x19 |
| "Nuclear Nightmares" | July 13, 2006 | 42x20 |
| "Tutankhamun's Fireball" | July 20, 2006 | 42x21 |
Season 43: 2006-2007
| Title | Original air date | Episode |
|---|---|---|
| "Survivors Guide To Plane Crashes" | October 3, 2006 | 43x01 |
| "Chimps Are People Too" | October 10, 2006 | 43x02 |
| "The World's First Face Transplant" | October 17, 2006 | 43x03 |
| "Human v 2.0" | October 24, 2006 | 43x04 |
| "The Great Robot Race" | October 31, 2006 | 43x05 |
| "Pandemic" | November 7, 2006 | 43x06 |
| "We Are The Aliens" | November 14, 2006 | 43x07 |
| "My Pet Dinosaur" | March 13, 2007 | 43x08 |
| "The Elephant's Guide To Sex" | March 20, 2007 | 43x09 |
| "Prof Regan's Beauty Parlour" | March 27, 2007 | 43x10 |
| "Mad But Glad" | April 3, 2007 | 43x11 |
| "Moon For Sale" | April 10, 2007 | 43x12 |
| "Battle of the Brains" | April 17, 2007 | 43x13 |
| "Skyscraper Fire Fighters" | April 24, 2007 | 43x14 |
| "The Six Billion Dollar Experiment" | May 1, 2007 | 43x15 |
| "How to Commit the Perfect Murder" | May 8, 2007 | 43x16 |
Season 44: 2007-2008
| Title | Original air date | Episode |
|---|---|---|
| "How to Kill a Human Being" | January 15, 2008 | 44x01 |
| "Total Isolation" | January 22, 2008 | 44x02 |
| "What on Earth is Wrong With Gravity?" | January 29, 2008 | 44x03 |
| "Is Alcohol Worse than Ecstasy?" | February 5, 2008 | 44x04 |
| "How to Make Better Decisions" | February 12, 2008 | 44x05 |
| "How to Live to be 101" | February 19, 2008 | 44x06 |
| "Professor Regan's Supermarket Secrets" | February 26, 2008 | 44x07 |
| "Are we Alone in the Universe?" | March 4, 2008 | 44x08 |
| "How Much is Your Dead Body Worth?" | March 18, 2008 | 44x09 |
| "How Does Your Memory Work?" | March 25, 2008 | 44x10 |
Season 45: 2008-2009
| Title | Original air date | Episode |
|---|---|---|
| "The President's Guide to Science" | September 16, 2008 | 45x01 |
| "How Mad Are You? Part 1" | November 11, 2008 | 45x02 |
| "How Mad Are You? Part 2" | November 18, 2008 | 45x03 |
| "Jimmy's GM Food Fight" | November 25, 2008 | 45x04 |
| "Do You Know What Time It Is?" | December 2, 2008 | 45x05 |
| "Allergy Planet" | December 9, 2008 | 45x06 |
| "Where's My Robot?" | December 16, 2008 | 45x07 |
| "Why Are Thin People Not Fat?" | January 26, 2009 | 45x08 |
| "Cannabis: The Evil Weed?" | February 3, 2009 | 45x09 |
| "Why Do We Dream?" | February 10, 2009 | 45x10 |
| "Can We Make a Star on Earth?" | February 17, 2009 | 45x11 |
| "The Secret Life of Your Bodyclock" | February 24, 2009 | 45x12 |
| "What's the Problem with Nudity?" | March 3, 2009 | 45x13 |
| "How to Survive a Disaster" | March 10, 2009 | 45x14 |
| "Who Do You Want Your Child to Be?" | March 17, 2009 | 45x15 |
| "Why Can't We Predict Earthquakes?" | March 24, 2009 | 45x16 |
| "Alan and Marcus Go Forth and Multiply" | March 31, 2009 | 45x17 |
| "How Violent Are You?" | May 12, 2009 | 45x18 |
Season 46: 2009-2010
| Title | Original air date | Episode |
|---|---|---|
| "Do I Drink Too Much?" | October 13, 2009 | 46x01 |
| "The Secret You" | October 20, 2009 | 46x02 |
| "Fix Me" | October 27, 2009 | 46x03 |
| "Who's Afraid Of A Big Black Hole?" | November 3, 2009 | 46x04 |
| "Why Do We Talk?" | November 10, 2009 | 46x05 |
| "How Long Is A Piece Of String?" | November 17, 2009 | 46x06 |
| "How Many People Can Live on Planet Earth?" | December 9, 2009 | 46x07 |
| "The Secret Life of the Dog" | January 6, 2010 | 46x08 |
| "Why Do Viruses Kill?" | January 13, 2010 | 46x09 |
| "Pill Poppers" | January 20, 2010 | 46x10 |
| "Don't Grow Old" | February 3, 2010 | 46x11 |
| "To Infinity and Beyond..." | February 10, 2010 | 46x12 |
| "What Makes a Genius?" | February 17, 2010 | 46x13 |
| "Did Cooking Make Us Human?" | February 24, 2010 | 46x14 |
| "Is Everything We Know About The Universe Wrong?" | March 3, 2010 | 46x15 |
References
- General
- "Horizon archives". BBC Retrieved on 2009-12-08
- "Horizon episodes coming up". BBC Retrieved on 2009-12-08
- "Recent Horizons". BBC Retrieved on 2009-12-08
- Specific
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