Photos | Earth Hour 2012
Philippines Earth Hour
Credit: AP
Women hold lighted candles as they watch the program after the symbolic switching off of lights in observance of Earth Hour Saturday, March 31, 2012 in Manila's financial district of Makati, Philippines. The switching off of lights for one hour is being observed world-wide as part of a global effort to shine a spotlight on climate change. (AP Photo/Pat Roque)
