Allegations of fraud and poisoning in Himalayan tourism have already had a huge impact on the Mount Everest guiding industry ...

Tersus Solutions partners with brands like Stio, The North Face, and Arc’teryx to clean, repair, and recirculate used gear—to ...

A study of hundreds of hikers and runners reveals a dangerous gap between how safe we feel and the gear we actually carry.

The mountaineer, REI visionary, and environmental advocate was the defining figure of 20th-century American climbing.

The Air Quality Index, or AQI, is an air quality alert system maintained by the U.S. Environmental Protection Agency (EPA).

From powering Starlink to running diesel heaters, these portable power stations handled real off-grid use better than ...

You don’t have to leave the planet to feel like an astronaut. From hidden craters to secret NASA training grounds, these ...

We traveled to the front lines of Japan’s battle against the moon bear, which experts say is responsible for hundreds of ...

From search and rescue to animal welfare, nonprofits do heroic work to serve their communities. Defender believes they ...

The bacteria living in your gastrointestinal tract may play a surprising role in how much altitude sickness affects you.

Burke has spent decades researching cancer. Now facing a stage IV diagnosis, she’s heading to Mount Everest to study her ...

From dodging venomous vipers to finding water in the desert, a veteran producer reveals the high-stakes process of picking ...