A Nepali guide survived six days by himself on Mount Everest without food, water, or supplemental oxygen. Here’s how he survived.

A young hiker has died after experiencing symptoms of heat-related illness on the Bright Angel Trail in Grand Canyon National Park.

Officials say they’ve made two arrests in connection with the senseless murders of a married couple last month in Kruger National Park.

Security-camera footage shows a man walking down the street in Japan when a bear began chasing and attacking him. Watch here.

Over Memorial Day weekend, two people—reportedly a married couple—drowned after falling at Roaring River Falls in Kings Canyon National Park.

Two aggressive elk charged a woman who was walking her dog along a lake near Evergreen, Colorado. Watch the encounter here.

A massive, 16,000-pound boulder fell on a climber in Oregon. See photos and videos of the complicated rescue here.

An outbreak of norovirus is affecting dozens of hikers on the Pacific Crest Trail. One man even required an air lift off the trail.

Two mountaineers who reached the summit of Mount Everest during a busy week at the world’s tallest mountain have died on their descent.

A trail runner survived a bear attack in British Columbia, Canada, after a mother bear with two cubs defensively swiped at him.