The Explosion! Winner of the 2012 National Geographic Photography Contest. "The subject’s name is Busaba, a well-cared-for Indochinese tigress, whose home is at Khao Kheow Open Zoo, Thailand." Photo by Ashley Vincent of Chonburi, Thailand.
Half Dome, Yosemite National Park Photograph by Jimmy Chin, National Geographic Alex Honnold takes on the third zigzag of Half Dome without a rope. He has just one more difficult section, or pitch, in the last three before reaching the summit.