Horizon Christmas Special: Hand me my Sword, Humphrey (S0E1)
12/25/1966
The Case of the Ancient Astronauts (S0E2)
11/25/1977
The Mind's Eye (S0E3)
1/28/1980
25 Years in Space (S0E4)
12/25/1982
Biology at War: The Mystery of Yellow Rain (S0E5)
5/15/1984
Beyond the Moon (S0E6)
7/21/1984
Biology at War: A Plague in the Wind (S0E7)
10/29/1984
Twenty-First Birthday (S0E8)
5/20/1985
Halley's Comet - The Apparition (S0E9)
11/25/1985
Halley's Comet - The Encounter (S0E10)
3/13/1986
The Diary of Discovery (S0E11)
9/28/1988
Making an Honest Fiver (S0E12)
6/6/1990
Red Star in Orbit: The Invisible Spaceman (S0E13)
12/7/1990
Red Star in Orbit: The Dark Side of the Moon (S0E14)
12/14/1990
Red Star in Orbit: The Mission (S0E15)
12/21/1990
A Close Encouter of the Second Kind (S0E16)
7/10/1992
Hide and Seek in Iraq (S0E17)
8/23/1992
The Truth About Sex (S0E18)
10/12/1992
Assault on the Male (S0E19)
10/31/1993
30th Anniversary - The Far Side (S0E20)
5/23/1994
Twice Born (S0E21)
2/14/1995
Einstein: The Miracle Year (S0E22)
3/17/1996
Einstein: Fame (S0E23)
3/18/1996
BSE: The Invisible Enemy (S0E24)
11/17/1996
BSE: The Human Experiment (S0E25)
11/18/1996
Molecules With Sunglasses (Update) (S0E26)
12/9/1996
Ice Mummies: The Ice Maiden (S0E27)
1/30/1997
Ice Mummies: A Life in Ice (S0E28)
2/6/1997
Ice Mummies: Frozen in Heaven (S0E29)
2/13/1997
Computers Don't Bite, Inside the Internet (S0E30)
5/17/1997
Antarctica: The Ice Lives (S0E31)
10/30/1997
Antarctica: The Ice Forms (S0E32)
11/6/1997
Antarctica: The Ice Melts (S0E33)
11/13/1997
Crash (S0E34)
1/8/1998
Darwin: The Legacy (S0E35)
3/29/1998
Longitude (S0E36)
1/4/1999
Fat Files: Born to Be Fat (S0E37)
1/7/1999
Fat Files: Fixing Fat (S0E38)
1/14/1999
Fat Files: Living on Air (S0E39)
1/21/1999
Atlantis Uncovered (S0E40)
10/28/1999
Atlantis Reborn (S0E41)
11/4/1999
Life and Death in the 21st Century: Living Forever (S0E42)
1/4/2000
Life and Death in the 21st Century: Future Plagues (S0E43)
1/5/2000
Life and Death in the 21st Century: Designer Babies (S0E44)
1/6/2000
Inside the Internet (S0E45)
6/10/2000
Life on Mars (S0E46)
1/11/2001
Destination Mars (S0E47)
1/18/2001
What Sank the Kursk? (S0E48)
8/8/2001
First Olympians: A Horizon Special (S0E49)
7/23/2004
Everest: Doctors in the Death Zone (1) (S0E50)
9/23/2007
Everest: Doctors in the Death Zone (2) (S0E51)
9/30/2007
Lost Horizons: The Big Bang (S0E52)
9/4/2008
How Mad Are You? (1) (S0E53)
11/11/2008
How Mad Are You? (2) (S0E54)
11/18/2008
40 Years on the Moon (S0E55)
7/9/2009
Pandemic: A Horizon Guide (S0E56)
8/9/2009
Mars: A Horizon Guide (S0E57)
11/15/2009
How Many People Can Live on Planet Earth? (S0E58)
12/9/2009
Diet: A Horizon Guide (S0E59)
1/7/2010
The End of God? A Horizon Guide to Science and Religion (S0E60)
9/17/2010
What Makes Us Clever? A Horizon Guide to Intelligence (S0E61)
1/6/2011
Japan Earthquake: A Horizon Special (S0E62)
3/27/2011
The Space Shuttle: A Horizon Guide (S0E63)
4/10/2011
The End of the World? A Horizon Guide to Armageddon (S0E64)
5/12/2011
Carrot or Stick? A Horizon Guide to Raising Kids (S0E65)
8/11/2011
Extinct: A Horizon Guide to Dinosaurs (S0E66)
9/21/2011
The Hunt for Higgs: A Horizon Special (S0E67)
1/9/2012
Woof! A Horizon Guide to Dogs (S0E68)
3/1/2012
The Hunt for AI (S0E69)
4/3/2012
Stuff: A Horizon Guide to Materials (S0E70)
4/19/2012
Blink: A Horizon Guide to the Senses (S0E71)
7/11/2012
Immortal? A Horizon Guide to Ageing (S0E72)
7/17/2012
Mission to Mars: A Horizon Special (S0E73)
7/31/2012
The Final Frontier: A Horizon Guide to the Universe (S0E74)
10/17/2012
The Truth About Meteors: A Horizon Special (S0E75)
3/3/2013
Mend Me: A Horizon Guide to Transplants (S0E76)
3/27/2013
Tomorrow's World: A Horizon Special (S0E77)
4/11/2013
What's Killing Our Bees? A Horizon Special (S0E78)
8/2/2013
Comet of the Century: A Horizon Special (S0E79)
11/23/2013
The £10 Million Challenge (S0E80)
5/22/2014
The Transit of Venus: A Horizon Special (S0E81)
6/5/2012
The Great British Drought (S0E100)
5/26/1976
Festival 77: Horizon 2002 (S0E101)
8/26/1977
Darwin's Dream (S0E102)
9/23/1977
A Killer in the Village - Update (S0E103)
4/2/1984
Life Story (S0E104)
4/27/1987
Sex: A Horizon Guide (S0E105)
9/11/2013
Climate Change: A Horizon Guide (S0E106)
3/4/2015
The Mystery of Murder: A Horizon Guide (S0E107)
3/9/2015
The Horizon Guide to AI (S0E108)
9/4/2018
Tim Peake Special - How to be an Astronaut (S0E109)
12/13/2015
Jimmy Carr and the Science of Laughter (S0E110)
9/11/2016
Horizon Special: The Vaccine (S0E111)
6/16/2021
The Life and Times of El Niño (S0E112)
1/3/2006
Impact! A Horizon Guide to Plane Crashes (S0E113)
10/14/2013
Impact! A Horizon Guide to Car Crashes (S0E114)
10/21/2013
Cat Watch 2014 - A Cat's Eye View (S0E115)
10/7/2014
Cat Watch 2014 - The Lion in Your Lap (S0E116)
10/8/2014
Cat Watch 2014 - Cat Talk (S0E117)
10/9/2014
What's The Right Diet For You? Part 1 (S0E118)
1/12/2015
What's The Right Diet For You? Part 2 (S0E119)
1/13/2015
What's The Right Diet For You? Part 3 (S0E120)
1/14/2015
Journey to the Moon: A Horizon Special (S0E121)
7/17/2019
Alastair Campbell: Depression and Me (S0E122)
5/21/2019
Ice Station Antarctica: Part One (S0E123)
5/21/2016
Ice Station Antarctica: Part Two (S0E124)
5/28/2016
Coronavirus Special - Part 1 (S0E125)
4/9/2020
Coronavirus Special - Part 2 (S0E126)
5/19/2020
Coronavirus Special - What We Know Now (S0E127)
2/25/2021
Horizon Special: The Vaccine (S0E128)
6/16/2021
Delete (S0E999)
1/1/0001
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