MEXICO CITY, MEXICO - MARCH 29: (L-R) Director of climate change and energy program WWF Mexico, Vanessa Pérez Cirera, World Wildlife Foundation (WWF) Mexico director, Omar Vidal, Environment ... more 
MEXICO CITY, MEXICO - MARCH 29: (L-R) Director of climate change and energy program WWF Mexico, Vanessa Pérez Cirera, World Wildlife Foundation (WWF) Mexico director, Omar Vidal, Environment Secretary, Tania Muller Garcia, Mexico City Mayor, Miguel Ángel Mancera, Delegation Chief Miguel Hidalgo, Victor Hugo Romo Guerra attend the Earth Hour the global movement organized By WWF (World Wide Fund For Nature) on March 29, 2014 in Mexico City, Mexico. (Photo by Victor Chavez/Getty Images for Sony) less 
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Getty Images | Photo By Victor Chavez / Getty Images for Sony
Sun, Mar 30, 2014 3:56 AM EDT