New data identifies two key risk factors for high-altitude pulmonary edema, a leading cause of death on the mountain.

The bag and pump weigh about 14 pounds (6.3 kilos) and are now carried on most major high altitude expeditions. Bags can be rented for short term trips such as treks or expeditions. Above 10,000 feet ...

Everest would feel, physiologically, as if it were an additional 3,000 feet higher ... the oxygen deprivation a mountaineer faces at high altitude. For the most part, this relationship works ...

Once referred to as mountain madness, it's a uniquely terrifying ailment that manifests as intense hallucinations and disappears once you descend. While high-altitude psychosis doesn't always ...

Back in 2021, I wrote about the case of Daniel Granberg, a 24-year-old from Colorado who died at the summit of a Bolivian mountain called Illimani of what turned out to be high-altitude pulmonary ...