Bill Harley and the Davidson Brothers had a dream. This is the story of that dream and what it took to get there, despite all odds. What can be more American?

Special effects designer Alex Wheeler reveals what it took to authentically recreate the motorcycles seen in Harley and the Davidsons.

Executive Producers, John Goldwyn and Dimitri Doganis discuss the making of Harley and the Davidsons.

Sherpa share why they love and appreciate their work as mountaineers on Mount Everest despite the dangers.

Sherpa does not mean what most of the Western world believes. Sherpas are mountain climbers, but an ethnic group of people with their own culture and beliefs.

Sherpas hold a ceremony to ask Mount Everest permission to climb before embarking on their journey.

Sherpas hold a tenuous group meeting at Everest Base Camp immediately after the devastating avalanche in April 2014.

Sherpa, part of Elevation Weekend, premieres Sat Apr 23 at 9/8c.

A severely dehydrated Jake manages to create a way to distill drinkable water while surviving in the Namib desert.

Casey becomes so desperate for nutrients while surviving in the Canadian Rockies that he turns towards a very odd food source.

Chris Swanda bragged about being able to handle the game better than the Dudes, so they decide to ambush him when he's least expecting it.

Terry, Jake, and Chris compete in a log splitting competition - the Dude who can split three logs in a row wins!

In this bonus scene, a weakened Jake underestimates a giant grasshopper when hunting for food in the Namib desert.

The Dudes play a cruel joke on Jake by leaving him a goldfish as one of his survival items - will he suck it up and eat it?

After creating shelter, John Hudson starts a fire with a tube of lipstick. How? Lipstick contains petroleum, which is flammable.

John Hudson, a former helicopter pilot for the British Royal Air Force, trains the instructors for the RAF Advanced Survival training course; skilled in jungle survival, John has trained both British soldiers and allies.