Climbers using xenon gas reached the summit of Everest in under five days but critics say the shortcut could lead to ...

If you're traveling for a high-altitude hike, here's how to prepare for altitude sickness before you set out on your adventure.

Traveling at high altitude can be hazardous. The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton University and ...

Initial plans for China's low-altitude economy often refer to services such as small-scale deliveries of goods at elevations of up to 1,000 metres (3,280 ft). But some localities are also eyeing ...