Climbers who ascend higher than 26,000 feet on Mount Everest enter the "death zone." In this area, oxygen is so limited that the body's cells start to die, and judgment becomes impaired. Climbers ...

Unidentified mountaineers descend from the summit of Mount Everest in a May 19, 2009 file photo. AFP/COURTESY OF PEMBA DORJE SHERPA "The body was frozen with hands and legs spread," he said.

The body of one of the hikers in Mount Everest's greatest mystery is believed to have been found after 100 years.. British mountaineer Andrew "Sandy" Irvine vanished alongside fellow climber ...

Four climbers went up and down Everest in under a week with the help of xenon gas—a record-breaking ascent that has ignited ...

Explore the extreme conditions on Mount Everest, from low oxygen levels to freezing temperatures, and discover how these challenges push human limits to the brink. Real Science Posted: December 10 ...

Mallory's body was found in 1999, but there was no evidence that could point to the two having reached Everest's summit at 29,032 feet, according to The Associated Press.

The Mount Everest Base Camp, at 17,598 feet high, hosts climbers acclimating to the elevation before they make their ascent. Daniel Oberhaus via Wikimedia Commons under CC BY-SA 4.0. More than 300 ...

AEW star Darby Allin is feeling great following his successful climb of Mount Everest.