World landmarks dimmed for Earth Hour

People stand around about 5000 candles arrange to a globe in front of the Brandenburg Gate when the landmark went dark to mark 'Earth Hour' 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)