Indonesia Earth Hour

Activists light a candle as buildings have most of their exterior lights turned off to mark the Earth Hour at the main business district in Jakarta, Indonesia, Saturday, March 31, 2012. Hundreds of landmarks around the world including Washington's National Cathedral, London's Clock Tower, the Great Wall of China and Tokyo Tower will be dimmed at 8:30 p.m. local time as part of a global effort to shine a spotlight on climate change.(AP Photo/Dita Alangkara)

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