Six-day-old newly born giraffe calf (C) is seen next to its parents six-year-old father Buddy (L) and eleven-year old mother Jacky at their enclosure in Buenos Aires' zoo July 16, 2013.
A woman and two young girls ride horses through a canola field near Cremona, Alta., Tuesday, July 16, 2013. Farmers in southern Alberta grow canola as a cash crop.
(Jeff McIntosh/THE CANADIAN PRESS)
Skateboarder Rodolfo Soto performs a trick in a park near the East River in New York, July 16, 2013.
Keith Straw, 58, competes during the Badwater Ultramarathon in Death Valley National Park, California July 15, 2013. The 217 km race, which bills itself as the world's toughest foot race, goes from Death Valley to Mt. Whitney, California in temperatures which can reach 55 Celsius.
Kids cool off in the spray of an open hydrant on a hot evening in Lawrence, Mass. Tuesday, July 16, 2013.
A child stands beside tributes left by well-wishers outside the hospital where ailing former President Nelson Mandela is being treated in Pretoria, July 16, 2013.
A woman cheers from her fire escape during a march in protest against the acquittal of George Zimmerman for the shooting death of unarmed black teenager Trayvon Martin in Florida last year, in the Harlem area of New York, July 16, 2013.
An emergency worker stands on the site of the train wreck in Lac Megantic, July 16, 2013. The crude oil freight train that derailed and blew up in the small town of Lac-Megantic early on Saturday morning was traveling far too fast when it went off the rails, investigators told reporters on Tuesday.
(Ryan Remiorz/The Canadian Press)
North Korean leader Kim Jong-un visits a Mushroom Farm in this undated photo released by North Korea's Korean Central News Agency (KCNA) in Pyongyang July 16, 2013.
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