When I had to turn back from a trek in the Andes, I decided to find out what happened. A Q&A with mountaineer and specialist ...

Altitude sickness is rare at elevations of less than 8,200 feet but becomes much more common at higher altitudes. Maya Karkalicheva/Moment via Getty Images Equipped with the latest gear and a thirst ...

They call it the “death zone.” It’s a stretch of Mount Everest that’s about 26,000 feet up and is strewn with something like 200 corpses permanently frozen into the landscape —a warning to other ...

Add Yahoo as a preferred source to see more of our stories on Google. Via ferrata in Slovenia's Julian Alps: If you don't have the time to do it on site, you can get your body used to the thinner air ...

You’ve just arrived in the Rocky Mountains and are awestruck by the rugged, natural beauty that surrounds you. You’ve mapped out all the trails you plan to hike and are eager to get on with the ...

Altitude sickness—medically termed Acute Mountain Sickness (AMS)—develops when the body has difficulty adapting to the ...

If you’re lucky enough to have traveled to a high-altitude destination—the Rocky Mountains, the Swiss Alps, Machu Picchu—then you may also be unlucky enough to have experienced altitude sickness.

Actor Greg Vaughan is sharing that he recently received emergency treatment after a scary experience while on vacation in the Rocky Mountains. Vaughan, who played the role of Eric Brady in "Days of ...