Lights Out: the 10th annual Earth Hour

Lights Out: the 10th annual Earth Hour
In this two photo combination picture, the temple of the Parthenon is pictured before and after having its lighting switched off to mark the Earth Hour in Athens on Saturday, March 19, 2016. Individuals, businesses, cities, and landmarks around the world are switching off their lights for one hour on Saturday to focus attention on climate change. (Photo by Yorgos Karahalis/AP Photo)

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