DISCOVERY CHANNEL

Bear is in the Caucasus Mountains driving a snowmobile out the back of a hovering helicopter. Later, he ziplines across a river and trudges swampy wetlands.

A survival expert tries to survive the sweltering, crocodile-infested Northern Territory.

Adventurer Bear Grylls demonstrates how to survive in the harsh Australian outback by taking extreme measures to avoid sun stroke, finding food, and avoiding the deadly salt water crocodiles.

Observers provide a primary account of natural disasters by capturing terrifying moments and recording the instances of destruction.

Adventurer Bear Grylls demonstrates how to survive in Ecuador's jungles by building bamboo bridges, making a bow and arrow, and showing which plants are poisonous.

Bear Grylls demonstrates all the techniques and skills that are required in order to stay alive in the dangerous waters of the Everglades.

Rick Harrison and his family own and run a pawn shop in Las Vegas. They purchase, sell and evaluate interesting artefacts with fascinating stories.

Bear navigates the deadly swamps of the Deep South, wrestles with an alligator and tangles with venomous snakes. Later, he wonders if he can land a catfish with his bare hands.