World landmarks dimmed for Earth Hour
Germany Earth Day
The Brandenburg gate seen in the dark shadows as the lights illuminating the landmark were switched off 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)