A 52-year-old woman takes on the 131-mile Badwater Ultramarathon through Death Valley in 125-degree heat -- "the world's toughest footrace." (LVRJ)
Prizewinning photographer Steve Winter roams the upper altitudes of northern India in pursuit of the notoriously camera-shy feline. (National Geographic)
Take to the skies in a new sport called aerotrekking with pilot Denny Reed.
Paintball enthusiasts say their sport is about adrenaline rushes and having fun -- and only hurts for a little while.