How to Get Back to Camp and Eat Your Caribou

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CNN's John Sutter talks about the challenges of hunting caribou in Alaska. The tundra is one of the hardest things to walk on in the world, he says. Humans are uniquely built to carry heavy loads over distance and exercise helps shape them into fittest people they can be, writes Sutter.

Journalist and author Michael Easter talks about his book The Comfort Crisis with EconTalk host Russ Roberts. Easter thinks modern life is too easy, too comfortable. To be healthy, he says, we need to move out of our comfort zones and every once in a while try to do something, especially something physically demanding, that we didn't think was possible. Easter discusses rising levels of anxiety and depression in the West and why taking on challenges can be part of the solution.