Season
- Season 0 1999-07-13
- Season 1 1974-03-03
- Season 2 1974-11-03
- Season 3 1976-01-04
- Season 4 1977-01-05
- Season 5 1978-01-04
- Season 6 1979-01-04
- Season 7 1980-01-15
- Season 8 1981-01-06
- Season 9 1982-01-10
- Season 10 1983-01-18
- Season 11 1984-01-17
- Season 12 1985-01-15
- Season 13 1986-01-21
- Season 14 1987-01-20
- Season 15 1988-01-19
- Season 16 1989-01-17
- Season 17 1990-01-09
- Season 18 1991-01-08
- Season 19 1992-01-14
- Season 20 1993-01-05
- Season 21 1994-01-18
- Season 22 1995-01-08
- Season 23 1995-10-10
- Season 24 1996-10-01
- Season 25 1997-10-07
- Season 26 1998-10-06
- Season 27 1999-10-05
- Season 28 2000-10-24
- Season 29 2001-10-02
- Season 30 2002-09-03
- Season 31 2003-09-30
- Season 32 2004-09-28
- Season 33 2005-09-20
- Season 34 2006-09-05
- Season 35 2007-10-09
- Season 36 2008-10-07
- Season 37 2009-10-06
- Season 38 2010-10-19
- Season 39 2011-09-07
- Season 40 2012-10-10
- Season 41 2013-09-11
- Season 42 2014-09-10
- Season 43 2015-09-16
- Season 44 2016-09-07
- Season 45 2018-01-10
- Season 46 2019-01-02
- Season 47 2020-02-05
- Season 48 2021-01-13
- Season 49 2022-02-01
- Season 50 2023-02-01
- Season 51 2024-01-31
- Season 52 2025-01-22
Season 52 Episode
- Season 17 Poison in the Rockies
- Season 17 Race for the Top
- Season 17 Disguises of War
- Season 17 The Bomb's Lethal Legacy
- Season 17 The Big Spill
- Season 17 The Genius That Was China: Rise of the Dragon
- Season 17 The Genius That Was China: Empires in Collision
- Season 17 The Genius that Was China: The Threat from Japan
- Season 17 The Genius That Was China: Will the Dragon Rise Again?
- Season 17 The KGB, The Computer and Me
- Season 17 Neptune's Cold Fury
- Season 17 To Boldly Go...
- Season 17 Poisoned Winds of War
- Season 17 The Blimp is Back!
- Season 17 Earthquake!
- Season 17 Killing Machines
- Season 17 Can the Elephant Be Saved?
- Season 17 We Know Where You Live
- Season 17 In the Land of the Llamas
- Season 17 What's Killing the Children?
NOVA - Season 17 Episode 17 Can the Elephant Be Saved?
6.90 55 minutes Is the ivory ban in the elephant's best interest? NOVA looks at the controversial strategies to save the world's largest land animal from extinction.
