Earth Hour 2012

OSAKA, JAPAN - JUNE 12: People stand next to candles during Osaka Candle Night, on June 12, 2013 in Osaka, Japan. The 'earth hour' event plunges the city of Osaka into darkness for two hours as thousands of candles illuminate shops and offices in the business area of Osaka city. (Photo by Buddhika Weerasinghe/Getty Images)

OSAKA, JAPAN - JUNE 12: People stand next to candles during Osaka Candle Night, on June 12, 2013 in Osaka, Japan. The 'earth hour' event plunges the city of Osaka into darkness for two hours as thousands of candles illuminate shops and offices in the business area of Osaka city. (Photo by Buddhika Weerasinghe/Getty Images)