In this combination two photos the Belarusian National Library taken before and 

In this combination two photos the Belarusian National Library taken before and after the lights are turned off  is seen during the worldwide Earth Hour, a global campaign to highlight the threat of climate change, with lights turned on at top, and below with lights turned off, in Minsk, Belarus, 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. Monument of Belarusian enlightener Frantsysk Skorina is on left. (AP Photo/Sergei Grits)
Associated Press
In this combination two photos the Belarusian National Library taken before and after the lights are turned off is seen during the worldwide Earth Hour, a global campaign to highlight the threat of climate change, with lights turned on at top, and below with lights turned off, in Minsk, Belarus, 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. Monument of Belarusian enlightener Frantsysk Skorina is on left. (AP Photo/Sergei Grits)
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