Photos: Cities dim for 'Earth Hour'
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Credit: AFP/Getty Images
People gather in front of Malaysia's iconic Patronas Twin Towers (C) as they stand unlit during Earth Hour in Kuala Lumpur on March 31, 2012. Millions of people were expected to switch off their lights for Earth Hour on March 31, in a global effort to raise awareness about climate change. Since it began in Sydney in 2007, Earth Hour has grown to become what environmental group WWF says is the world's largest demonstration of support for action on carbon pollution. AFP PHOTO/Saeed KHAN (Photo credit should read SAEED KHAN/AFP/Getty Images)
