The forest, preserved by ice for millennia, is emerging as climate change accelerates the melting of high-altitude ice patches. “No one had any idea that these patches of ice had been around for ...

Though sun halos can happen year-round, they are especially noticeable in the winter when ice-filled cirrus clouds are more ...

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 ...

Physiologists use this information to predict the oxygen deprivation a mountaineer faces at high altitude. For the most part, this relationship works quite well. But factors other than altitude ...

The fact that ice preserved the body makes Juanita a substantial scientific find. All other high-altitude Inca mummies have been completely desiccated—freeze-dried in a way—much like mummies ...

Ice stupas are towering man-made ice structures ... Slovenian photographer Ciril Jazbec captured these impressive structures in India’s high-altitude Ladakh region, where farming communities ...