Torrential downpours hammer the survivalists in the Georgia rainforest.
The mile-high altitude of the Rockies tests two strangers' ability to adapt.
The frigid Montana wilderness pushes a partnership over the edge.
A Hawaiian biologist takes on the blistering Chihuahua Desert.
All-Stars Wes and Suzänne take on Ecuador's relentless rainforest.
Tarantulas and desert heat test an adventurer and archaeologist in Texas.
When nature calls, a fan's risky survival strategy backfires.
An Australian bushman and American biologist take on Namibia's desert.
A pair pushing 50 and a pair in their 20s take on the Sonoran Desert.