Portaledge camping at Yosemite.
British climber John Roberts in South Africa.
Ice climbing a frozen waterfall.
Extreme kayaking at Victoria Falls.
Blake Aldridge dives 29 meters from the rock monolith during the Red Bull Cliff Diving World Series in Portugal.
A death-defying act by Eskil Rønningsbakken in Norway.
Base jumping in Yosemite.
A ride at the Stratosphere Tower in Las Vegas.
Driving down a sand dune in Lucky Bay, Australia.
- Golf legend Arnold Palmer has died at 87. Known as "The King," his unusual style and charisma changed the game.
- Monday night's presidential debate may be the last hope for environmental activists who want climate in the national conversation.
- US officials have determined al-Qaeda likely influenced suspected New York City bomber Ahmad Khan Rahami.