Vernon Crookes Nature Reserve, South Africa.
CrossFit coaches Tim Pappas (left) and Chris Plentus doing jumping push-ups at New Jersey's Wildwood Beach.
Mount Evans, Colorado.
Cyclist Andy Schleck attacks a climb outside Breckenbridge, Colorado, during 2011's inaugural USA Pro Cycling Challenge, a seven-day stage race through the Rocky Mountains. This year's competition starts in Durango on August 20. Follow the action at usaprocyclingchallenge.com.
McNeil River, Alaska.
Sandy’s Beach, Oahu.
Unnamed fjord south of Paamiut, Greenland.
Stawamus Chief, Squamish, British Columbia.
Fernando de Noronha Island, Brazil.
Sliding a chute at a gravel pit near Bursfelde, Germany.