Specials
9 episodes
To The Moon ~ 1
July 13, 1999
Eclipse Over America ~ 2
August 20, 2017
Blood Sugar Rising ~ 3
April 15, 2020
Gene-Editing Reality Check ~ 4
September 04, 2020
Search Engine Breakdown ~ 5
April 14, 2021
9 episodes
July 13, 1999
August 20, 2017
April 15, 2020
September 04, 2020
April 14, 2021
13 episodes
March 03, 1974
March 10, 1974
March 17, 1974
March 24, 1974
March 31, 1974
17 episodes
November 03, 1974
November 10, 1974
November 17, 1974
November 24, 1974
December 01, 1974
20 episodes
January 04, 1976
January 11, 1976
January 18, 1976
January 25, 1976
February 01, 1976
19 episodes
January 05, 1977
January 12, 1977
January 19, 1977
February 02, 1977
February 09, 1977
21 episodes
January 04, 1978
January 11, 1978
January 18, 1978
January 25, 1978
February 01, 1978
19 episodes
January 04, 1979
January 11, 1979
January 18, 1979
February 01, 1979
February 08, 1979
20 episodes
January 15, 1980
January 22, 1980
February 05, 1980
February 19, 1980
March 04, 1980
20 episodes
January 06, 1981
January 20, 1981
January 27, 1981
February 10, 1981
February 17, 1981
19 episodes
January 10, 1982
January 17, 1982
January 24, 1982
January 31, 1982
February 07, 1982
21 episodes
January 18, 1983
January 25, 1983
February 08, 1983
February 15, 1983
March 01, 1983
20 episodes
January 17, 1984
January 31, 1984
February 14, 1984
February 28, 1984
March 06, 1984
20 episodes
January 15, 1985
January 22, 1985
January 29, 1985
February 05, 1985
February 12, 1985
21 episodes
January 21, 1986
January 28, 1986
February 04, 1986
February 11, 1986
February 18, 1986
21 episodes
January 20, 1987
January 27, 1987
February 03, 1987
February 10, 1987
February 17, 1987
22 episodes
January 19, 1988
January 26, 1988
February 02, 1988
February 09, 1988
February 23, 1988
20 episodes
January 17, 1989
January 24, 1989
January 31, 1989
February 14, 1989
February 21, 1989
20 episodes
January 09, 1990
January 23, 1990
February 06, 1990
February 13, 1990
February 27, 1990
19 episodes
January 08, 1991
April 30, 1991
February 05, 1991
February 12, 1991
February 19, 1991
20 episodes
January 14, 1992
January 21, 1992
January 28, 1992
February 11, 1992
February 18, 1992
20 episodes
January 05, 1993
January 19, 1993
January 26, 1993
February 02, 1993
February 09, 1993
20 episodes
January 18, 1994
January 25, 1994
February 01, 1994
February 08, 1994
February 15, 1994
13 episodes
January 09, 1995
January 24, 1995
January 31, 1995
February 07, 1995
February 14, 1995
19 episodes
October 10, 1995
October 17, 1995
October 24, 1995
October 31, 1995
November 07, 1995
21 episodes
October 01, 1996
October 08, 1996
October 15, 1996
October 22, 1996
November 12, 1996
20 episodes
October 07, 1997
October 14, 1997
October 21, 1997
October 28, 1997
November 11, 1997
20 episodes
October 06, 1998
October 13, 1998
October 27, 1998
November 03, 1998
November 10, 1998
21 episodes
October 05, 1999
October 12, 1999
October 19, 1999
November 02, 1999
November 09, 1999
17 episodes
October 24, 2000
October 31, 2000
November 14, 2000
November 21, 2000
November 28, 2000
17 episodes
October 02, 2001
October 09, 2001
October 23, 2001
October 30, 2001
November 06, 2001
16 episodes
September 03, 2002
October 01, 2002
October 08, 2002
October 29, 2002
November 12, 2002
18 episodes
September 30, 2003
October 07, 2003
October 28, 2003
October 28, 2003
November 04, 2003
18 episodes
September 28, 2004
September 28, 2004
September 29, 2004
September 29, 2004
October 12, 2004
20 episodes
September 20, 2005
October 04, 2005
October 11, 2005
November 01, 2005
November 08, 2005
15 episodes
September 05, 2006
September 26, 2006
October 17, 2006
October 31, 2006
November 07, 2006
17 episodes
October 09, 2007
October 16, 2007
October 30, 2007
November 07, 2007
November 13, 2007
17 episodes
October 07, 2008
October 14, 2008
October 21, 2008
October 28, 2008
November 11, 2008
18 episodes
October 06, 2009
October 13, 2009
October 20, 2009
November 03, 2009
November 10, 2009
18 episodes
October 19, 2010
October 26, 2010
November 02, 2010
November 09, 2010
November 16, 2010
19 episodes
September 07, 2011
September 28, 2011
October 19, 2011
October 26, 2011
November 02, 2011
20 episodes
October 10, 2012
October 17, 2012
November 07, 2012
November 14, 2012
November 18, 2012
22 episodes
September 11, 2013
October 09, 2013
October 16, 2013
October 23, 2013
October 30, 2013
22 episodes
September 10, 2014
September 24, 2014
October 08, 2014
October 08, 2014
October 22, 2014
22 episodes
September 16, 2015
September 23, 2015
October 07, 2015
October 14, 2015
October 28, 2015
28 episodes
September 07, 2016
September 14, 2016
October 05, 2016
October 12, 2016
November 02, 2016
23 episodes
January 10, 2018
January 31, 2018
February 07, 2018
February 14, 2018
February 28, 2018
23 episodes
January 02, 2019
January 09, 2019
January 23, 2019
February 06, 2019
February 13, 2019
16 episodes
February 05, 2020
February 12, 2020
February 19, 2020
February 26, 2020
April 01, 2020
25 episodes
January 14, 2021
February 03, 2021
February 10, 2021
February 17, 2021
February 24, 2021
19 episodes
February 02, 2022
February 09, 2022
February 16, 2022
February 23, 2022
April 06, 2022
18 episodes
February 01, 2023
February 08, 2023
February 15, 2023
February 22, 2023
April 12, 2023
8 episodes
January 31, 2024
February 07, 2024
February 14, 2024
February 21, 2024
March 27, 2024