extreme sports

Ken Block, an action sports legend who also co-founded Hoonigan Racing, died on Monday at age 55 after his snowmobile fell backwards on a steep slope.

Hilaree Nelson, 49, was skiing down from the summit of 26,775-foot Mount Manaslu on Monday when she fell off the mountain

A man who has climbed many of the world's tallest buildings has done it again, this time in London.

"We love you, Dave Mirra. We're going to miss you," says the mayor of Greenville, N.C., the town where the legendary X Games athlete lived for years.

The world of climbing lost a daring innovator Saturday when Dean Potter died during a wingsuit flight. He was killed along with Graham Hunt as they tried to soar above California's Yosemite Valley.

After a stray dog met a team of Swedish adventure athletes in Ecuador, he ran for miles through rough terrain and swam to keep up. Now Arthur the dog is famous — and it all started with a meatball.