Earth Hour took place earlier this evening. Here are new additions to The Best Sites To Learn About “Earth Hour”:
AP Photos: Cities go dark for ‘Earth Hour’
Worldwide blackout: Landmark buildings across the globe switch off their lights to celebrate Earth Hour is from The Mail Online.
In pictures: Earth Hour around the world is from The BBC.
Cities across the globe celebrate Earth Hour is a photo gallery from CNN.
Earth Hour 2013: Does it really save energy? is from The Christian Science Monitor.