Sezon 4
Bölümler
1 Jellyfish Invasion 8 Ağu 2007 2 Science des chiens 15 Ağu 2007 3 Ultimate Crocodile 12 Eyl 2007 4 Science of Babies 19 Eyl 2007 5 Mammoth Mystery 7 Eki 2007 6 Inside the Body Trade 11 Kas 2007 7 Ultimate Viper 21 Kas 2007 8 China's Secret Mummies 2 Ara 2007 9 Last Christians of Bethlehem 9 Ara 2007 10 Science of Evil 9 Oca 2008 11 Testosterone Factor 13 Şub 2008 12 Alaska's Last Oil 12 Mar 2008 13 Shark Superhighway 8 Nis 2008 14 Tunnel to a Lost World 3 Haz 2008 15 Bog Mummies 4 Haz 2008 16 Science of Cats 10 Haz 2008 17 Gorilla Murders 1 Tem 2008 18 Finding Anastasia 29 Nis 2008