Mt. Rainier is the most glaciated mountain in the lower-48 states. Many of the best mountain climbers in the world cut their teeth on this dormant volcano in Washington State. Mt. Rainier is a ...

Physiologists use this information to predict the oxygen deprivation a mountaineer faces at high altitude ... two mountaineers climbing at the same altitude but on different mountains could ...

Two Brazilians climbed 6,961m Aconcagua in a week to and from their home town. It comes days after a UK team said they would try the same on Everest.