Video of the Day: Earth Hour 2012

The imagery is powerful: people from around the world, holding hands and candles in the dark, while iconic landmarks like the Eiffel Tower and Coliseum shut down their lights in recognition of Earth Hour 2012, one of the world's largest voluntary actions for the environment. The evocative Sigur Rós soundtrack doesn't hurt either.

Earth Hour calls upon individual citizens to switch off their lights for one hour to take a stand against climate change. Started in 2006 by WWF-Australia, the event quickly became a movement, spreading to hundreds of millions of people across 135 countries in just five years. Through an aggressive social media campaign, Earth Hour continues to send a strong message for environmental awareness, urging people to learn more about the global climate change crisis and take actions "beyond the hour" to lesson their impact.

This year's Earth Hour is scheduled for Saturday, March 31, at 8:30 p.m. local time. If climate change is important to you, don't miss the chance to join a movement for change.

Filed under: Photo of the Day, Video, Ecotourism, Consumer Activism