A red-hot lava flow two miles long has been attracting crowds to the slopes of Mount Etna on the island of Sicily, Italy.

NASA's Landsat 8 satellite snapped a stunning top-down view of an "unusually spectacular" Mount Etna eruption. Infrared data makes the volcano's lava river really pop.

Mad River Glen, meanwhile, is ideal for the hard-core powder hounds, with challenging terrain, narrow trails, and natural ...

This film recounts the adventures of the Kolb brothers, Ellsworth and Emory, who explored and documented the Grand Canyon in ...