Explorer - Season 4 Episode 7 : Ultimate Viper
National Geographic's Explorer gives viewers special access to the issues of the day.
First Air Date : Apr 07, 1985
Last Air Date : Mar 05, 2016
Runtime : 60 min.
Genre : Documentary
Stars : Lisa Ling
Quality : 
- Eps. 1 : Jellyfish Invasion2007-08-08
- Eps. 2 : Science des chiens2007-08-15
- Eps. 3 : Ultimate Crocodile2007-09-12
- Eps. 4 : Science of Babies2007-09-19
- Eps. 5 : Mammoth Mystery2007-10-07
- Eps. 6 : Inside the Body Trade2007-11-11
- Eps. 7 : Ultimate Viper2007-11-21
- Eps. 8 : China's Secret Mummies2007-12-02
- Eps. 9 : Last Christians of Bethlehem2007-12-09
- Eps. 10 : Science of Evil2008-01-09
- Eps. 11 : Testosterone Factor2008-02-13
- Eps. 12 : Alaska's Last Oil2008-03-12
- Eps. 13 : Shark Superhighway2008-04-08
- Eps. 14 : Tunnel to a Lost World2008-06-03
- Eps. 15 : Bog Mummies2008-06-04
- Eps. 16 : Science of Cats2008-06-10
- Eps. 17 : Gorilla Murders2008-07-01
- Eps. 18 : Finding Anastasia2008-04-29
