A volunteer of the World Wide Fund For Nature (WWF) sets the final candles amongst about 5000 candles to picture the globe prior to 'Earth Hour' in front of the Brandenburg Gate in Berlin, Saturday, March 31, 2012. Earth Hour takes place worldwide at 8.30 p.m. local time and is a global call to turn off lights for 60 minutes in a bid to highlight the global climate change. (AP Photo/Markus Schreiber)