BERLIN, GERMANY - MARCH 31: 5000 blue and green candles in an eight-meter shape of Planet Earth burn in front of the Brandenburg Gate during Earth Hour 2012 on March 31, 2012 in Berlin, Germany. According to organizers, Earth Hour 2012 has participants including individuals, companies and landmarks in 147 countries and territories and over 5,000 cities agreeing to switch off their lights for one hour. The Brandenburg Gate, the Eiffel Tower in Paris, Big Ben Clock Tower in London, the Christ the Redeemer statue in Rio de Janeiro and the Empire State Building in New York are among the monuments whose operators have agreed to participate in the demonstration. (Photo by Adam Berry/Getty Images)
