As hurricane season takes aim at American shores, the surfers among us are polishing their cowabungas.
Mt. Everest is a natural laboratory that continues to teach scientists lessons about how the body works and why lack of oxygen causes so many problems for climbers and heart failure patients.
Despite tales of overcrowding, fighting and tragedy, hundreds of people continue to try to summit Everest every year. What's the appeal?
A tough-as-nails New Zealand doctor fended off the attacking shark with a knife.
Is there a such thing as an easy way to get across one of the world's most hostile environments?
BASE jumping and sky-diving in a wing-suit makes extreme sports even more extreme, as recent high-profile deaths make clear.
Here are seven terrifying treks you may want to leave off the bucket list -- they could be your last.
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