He's spent the last three years chronicling the lives of couples who have swapped mainstream society for rare kind of freedom

Wolf howls, bird songs, crickets, frogs—soundscapes contain clues to not only what's going on around us but also who we are.

Secretary of the Interior tells all: what's next for the Department of the Interior and the environmental movement?

Now that they have the black box, what's next?

The hunt for the truth about Eastern Air Lines Flight 980

How two friends from Boston solved the world's greatest aviation mystery, Eastern Air Lines Flight 980

Ian Frazier has had it with people calling favorite outdoor spots “cathedrals,” “shrines,” and “sacred spaces.” Here's why.

Why environmental scientists are transforming big data into music

His journey from dirtbag to rock star, how to choose a climbing partner, and why bottled oxygen might be a performance-enhancing drug

An inside look at America's history with doping and double standards related to performance enhancement

The "human guinea pig" talk about his 4-hour plan to being good at, well, everything

The incredible story behind a journalist's terrifying journey through high-conflict jungle

He was kidnapped, survived an assassination attempt, and joined the hunt for the most deadly terrorist. Meet the most interesting man alive.

Alone, deep underwater inside a sunken ship, with only minutes to survive, Michael Proudfoot's survival story might be the most epic to date

When your submarine is on the verge of imploding, you better make all the right choices

When a group of immigrants set out across the desert, the results helped researcher create the Death Index, a new model for dehydration.

Pablo Valencia spent six days wandering the 110-degree desert before stumbling into McGee's camp. He shouldn't have been alive, but he was.

The bizarre science behind Phil Broscovak's lightning strike, and his incredible journey of recovery

A remote car accident, a broken ski, a tumble in the snow, and a slow descent into hypothermia before (spoiler alert!) a dramatic rescue