On March 27th, from 8:30pm to 9:30pm, a world wide event will take place called Earth Hour. It is a simple yet bold way to acknowledge climate change: turn off your lights. In 2009, nearly one billion people in 4,100 cities in 87 countries in each of the seven continents turned off their lights to observe Earth Hour.And the best part is it won't cost you a cent.
http://cobblehillassociation.blogspot.com/2010/03/earth-hour-is-on-horizon.html
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