Royal Robbins climbs El Capitan's North American Wall in Yosemite National Park in 1964. Robbins is a climbing purist whose ideas helped shape the sport. Glen Denny hide caption

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Tommy Caldwell says he prefers to climb at night when the rock is cooler, his hands sweat less and the friction is better. He and Kevin Jorgeson have been trying for seven years to scale the whole Dawn Wall in one shot. Corey Rich /Courtesy of Corey Rich Productions hide caption

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A charred tree rests on the forest floor after being sawn down to a stump Friday. Firefighters are still working to contain the Rim Fire, which is now the third-largest wildfire in California's history. Mike McMillan/U.S. Forest Service hide caption

toggle caption Mike McMillan/U.S. Forest Service