Kenton Cool, 52, has made more summits of world’s highest mountain peak than any non-Sherpa ever...

Kenton Cool, 52, has made more summits of world’s highest mountain peak than any non-Sherpa ever...

Nepal has issued a record 492 permits to climb Mount Everest during this year’s spring expedition season, despite a sharp increase in climbing fees,...

Until roughly 10,000 years ago, practically every human on Earth had brown eyes. That changed when a chance mutation (or mutations) began limiting...

The Institute for the Study of War said the Kremlin sharply escalated its threats against Ukraine and its partners ahead of May 9 celebrations,...

The human brain is, by every available measure, an unusual organ in terms of its energy demands. The brain accounts for approximately two percent of...

Billions of stars illuminate the Milky Way. Down here on Earth, only about 6,000 stars are visible to the naked eye, but with the right camera, we can...

A renowned Nepali mountain guide has broken his own world record for the most summits of Mount Everest, after scaling the world's tallest peak for the...

Hundreds of climbers are attempting to scale Mt. Everest, the world’s highest peak, despite an unstable ice block dangerously hanging over the key...

Every human eye has, on close examination, a small region of the retina where there are no light-sensing cells. The region is located approximately...