Climbing Mt. Everest Is Terrible for Your ’Nads

Here's some new research about what happens to testicles in high altitudes.


That Training Mask Doesn't Do What You Think It Does

And what it does do, you probably don't want.


The Unpredictable Danger of High-Altitude Sports

As hundreds of thousands of Americans plan to ski, hike and snowboard in the mountains this winter, scientists worry that the public isn't educated enough about the risks.


Pope Francis Wants to Chew On Some Coca Leaves in Bolivia

Because of Bolivia's high altitude, the pope reportedly requested that coca leaves be ready for him to chew on once he arrives today in La Paz.


Kyle Kendrick Is In Baseball Hell

The idea of putting baseball's worst starting pitcher in the game's most homer-friendly park seems like a sadistic thought experiment. Kyle Kendrick is living it.


We Asked an Aviation Psychiatry Expert Why Pilots Might Have Psychotic Breaks

Why would someone like copilot Andreas Lubitz crash a plane deliberately when he seemed so healthy and happy?


Space Jumper

After ascending to about 23 miles, or 120,000 feet, he’ll step out of his capsule and, one hopes, be the first human to break the sound barrier all on his own.


The Space Jump Will Be Delay-Streamed, In the Event That This Crazy Skydiver Gets Ripped Apart

Felix Baumgartner is braver than you are. In light of his latest stunt, it’s probably safe to say that he’s also probably crazier.