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

Climbers using xenon gas reached the summit of Everest in under five days but critics say the shortcut could lead to dangerous overcrowding and undermine the spirit of mountaineering.

The use of xenon gas by a group of British mountaineers before they began an expedition to climb the world's highest mountain in less than five days has raised questions about its effectiveness ...

British climbers recently reached the top of Mount Everest in record time. They inhaled xenon gas before the trip. But was that the decisive factor?

Four British climbers ascended Mount Everest in under a week, aided by a controversial new treatment called xenon gas. NBC News' Camila Bernal explains the controversy as some critics say it is ...

Four British climbers, early this month, scaled Mount Everest and returned home, all within a week, thanks to a new and controversial method involving the inhalation of xenon gas.

The climbers, guided by Austria-based Furtenbach Adventures, are now the first non-professionals to use xenon gas as part of their high-altitude preparation.

A renowned mountain guide revealed on Monday said that using xenon gas treatment and cutting-edge technology is not only expediting Mount Everest climbs but also minimizing environmental impact by ...

The use of xenon gas treatment has, however, drawn controversy and has even raised the concerns of Nepalese mountaineering authorities who have announced an investigation.

The mountain guide who used xenon gas treatment to put clients on top of Mount Everest and return them home within a week defended his technique.

Using xenon gas treatment and the latest technology is making climbing Mount Everest not just faster but also better for the environment, cutting down garbage and waste, a renowned mountain guide ...