Most people who are allergic to cats aren’t reacting to the fur—they’re reacting to a protein in cat saliva called Fel d 1.

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

This explorer spacecraft is heading to a rare asteroid with a naked metal core. It could hold clues to how Earth began ...

The next waypoint on Psyche's voyage will be a flyby of Mars in May 2026. Officials expect Psyche to keep that date, which is critical for using Mars' gravity to slingshot the spacecraft deeper into ...

IF YOU COULD scale Everest and back in less than a week, would you do it? That's exactly what a British expedition did, with the potential assistance of a secret ingredient: xenon gas.Right now, ...

But the use of xenon gas, promising to make the mountain even more accessible, has led to heated debate. Once the pinnacle of human endurance, Everest is already increasingly crowded and commercial.

The xenon-fueled expedition was organized by an Austrian guide named Lukas Furtenbach, who is known for his tech-focused approach to expeditions. He has previously had clients sleep in altitude tents ...

Their objection isn’t to xenon itself but to the idea of making Everest easier. That’s the same problem many runners have with Kipyegon’s sub-four-minute-mile attempt.

Fries administered the xenon gas about a week and a half before departure. Whether the team’s success is attributable to xenon “is difficult to say,” Fries says.

An unconventional trip up Mount Everest by British climbers has started a bit of a debate. The group managed to fly from London, summit Everest and return home in under a week by using xenon gas ...