In this two photo combination picture, the Indian Presidential Palace is seen 

In this two photo combination picture, the Indian Presidential Palace is seen lit, top, and then the same location in darkness when the lights are turned out for one hour to mark Earth Hour, in New Delhi, India, Saturday, March 23, 2013. Earth Hour was marked 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/Altaf Qadri)
Associated Press
In this two photo combination picture, the Indian Presidential Palace is seen lit, top, and then the same location in darkness when the lights are turned out for one hour to mark Earth Hour, in New Delhi, India, Saturday, March 23, 2013. Earth Hour was marked 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/Altaf Qadri)
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