Sezon 52
Bölümler
1 The Buffalo Wolves 18 Eki 2012 2 Babies: Born to be Good? 25 Eki 2012 3 Nuts About Squirrels 8 Kas 2012 4 The Norse: An Arctic Mystery 22 Kas 2012 5 Lights Out! 6 Ara 2012 6 David Suzuki's Andean Adventure 10 Oca 2013 7 Zapped: The Buzz About Mosquitoes 17 Oca 2013 8 Shattered Ground 7 Şub 2013 9 Meet the Coywolf 14 Şub 2013 10 The Fruit Hunters: Evolution of Desire (Part 1 of 2) 21 Şub 2013 11 The Fruit Hunters: Evolution of Desire (Part 2 of 2) 28 Şub 2013 12 Billion Dollar Caribou 21 Mar 2013 13 The Beaver Whisperers 28 Mar 2013 14 The Beetles Are Coming 4 Nis 2013 15 The Man Who Tweeted Earth 25 Nis 2013