Alaskans must seize the last days of warmth to hunt and fish along the water's edge.

With the freeze drawing near, the need for Alaskans to prepare for winter is hastened.

With summer waning, Alaskans must prepare their bodies and minds for what lies ahead.

As the Arctic thaws, Alaskans must seize the endless daylight to prepare for winter.

Daylight for 24-hours in the spring allows Alaskans to work nonstop to prepare for winter.

As the ice and snow melt across the Arctic, Alaskans take advantage of the warm season.

Alaskans travel the flowing rivers to hunt for fresh food and gather supplies.

The thawed waterways of summer allow Alaskans to harvest key resources for their survival.

The powerful bond between man and dog is crucial for survival in the Alaskan wild.

Alaskans living in remote wilderness face the daily challenge of getting enough food to survive.

A select few people choose to live alone in the unforgiving Alaskan wilderness.

Fire and ice play important roles in the Arctic tundra.

Living in the Alaskan wilderness is the ultimate lesson in survival.

In freezing temperatures, Alaskans must build and maintain shelter to survive.

Living in the remote Alaskan wilderness demands constant innovation.

On Alaska's merciless tundra, fearless women survive and thrive.

In this enhanced episode, long summer days provide optimal conditions for Alaskans to prepare their bodies and minds for the coming winter.

The Hailstone family must depend on each other to survive the Alaskan tundra.

Alaska is a land of extremes where a diverse terrain presents unique challenges.

Waterways provide Alaskans with resources and food but can also be dangerous.

In the Arctic, Alaskans fight to secure the bare necessities in order to live and thrive.

Money and goods mean nothing to the people in "Live Free or Die." The series depicts a trend called "rewilding" -- the undomestication of humans -- and follows those who've rejected a mainstream existence to live off the land, in simple homes without electricity or running water. Being self-sufficient is a constant challenge, as obstacles like brutal weather and depleted food stocks require quick, innovative solutions. Modern pioneers include Colbert, a former financial adviser now living in a Georgia swamp; Gabriel, whose California lifestyle alternates between the mountains and the sea; and Tony and Amelia, who turned a hillside in the Blue Ridge Mountains into a garden.

"It's the end of the world as we know it (and I feel fine)," sang R.E.M.'s Michael Stipe, and it's a proclamation that must resonate with the people profiled in this series. That's because they are all preparing for doomsday, whether it's caused by a natural disaster, a financial collapse or a nuclear winter, and their plan is to outlast and outlive any apocalyptic scenario. The series goes inside America's "prepping" subculture and introduces otherwise ordinary folks who are stockpiling food, water, weapons and whatever else they think is necessary in the event basic services should falter and society turns chaotic and violent. Also, each prepper's plan is reviewed by the consulting firm Practical Preppers, which analyzes its potential effectiveness in case the prepper's worst fears become reality.

The old Dolly Parton hit "9 to 5" isn't a tune worth humming for the blue-collar pioneers featured in "Filthy Riches." The series spotlights ingenious Americans who skirt a conventional workplace in favor of making a living in the deep rivers, soggy mud flats and wild backwoods of the U.S. Ray Turner, for example, has been catching eels in Delaware for 30 years. He uses a self-made smokehouse in the woods to cook the critters and sell them. Billy Taylor and his sons hunt for prized ginseng root in the Appalachians. Taylor, a fully licensed wild ginseng dealer, promotes sustainability by planting its berries. In Maine, Jim Campbell and Andy Johns make the coastal mud flats their office, as they dig for valuable bloodworms to sell to fishermen. And Greg Dahl and Albert DeSilva are burl hunters. A burl is a hard, unwieldy outgrowth on a tree, usually at the trunk. Burls have value because of the spectacular patterns found in them when cut open.