Natural World - Season 4 Episode 4: On the Verge of Life

Episodes: 12

Specials

1984-09-24

Episodes: 10

Season 1

1983-10-30

Episodes: 8

Season 2

1984-05-06

Episodes: 15

Season 3

1984-11-04

Episodes: 20

Season 4

1985-09-15

Episodes: 17

Season 5

1986-10-05

Episodes: 13

Season 6

1987-09-20

Episodes: 14

Season 7

1988-09-18

Episodes: 16

Season 8

1989-10-01

Episodes: 14

Season 9

1991-01-06

Episodes: 13

Season 10

1991-11-24

Episodes: 16

Season 11

1993-01-03

Episodes: 14

Season 12

1994-02-20

Episodes: 15

Season 13

1994-11-27

Episodes: 12

Season 14

1996-01-14

Episodes: 17

Season 15

1996-10-06

Episodes: 19

Season 16

1997-10-19

Episodes: 18

Season 17

1998-10-11

Episodes: 17

Season 18

1999-10-03

Episodes: 18

Season 19

2000-10-08

Episodes: 16

Season 20

2001-10-07

Episodes: 15

Season 21

2002-10-13

Episodes: 17

Season 22

2003-10-12

Episodes: 14

Season 23

2004-10-14

Episodes: 18

Season 24

2005-10-19

Episodes: 17

Season 25

2006-10-18

Episodes: 11

Season 26

2007-04-04

Episodes: 17

Season 27

2008-01-04

Episodes: 16

Season 28

2008-11-11

Episodes: 14

Season 29

2009-10-28

Episodes: 14

Season 30

2010-07-08

Episodes: 14

Season 31

2011-08-01

Episodes: 10

Season 32

2012-07-19

Episodes: 10

Season 33

2013-05-17

Episodes: 10

Season 34

2014-04-11

Episodes: 10

Season 35

2015-02-24

Episodes: 9

Season 36

2016-04-14

Episodes: 8

Season 37

2017-03-20

Episodes: 8

Season 38

2018-03-31

Episodes: 9

Season 39

2019-04-07