- Earth Hour
 - Information about the World Wildlife Fund's annual comemoration of Earth Hour. - Earth Hour Australia
- Information about Australia's celebration of Earth Hour, when more than two million Sydney businesses and households turn off their lights for one hour to creating a powerful global message that it's possible to take action on climate change.
- Earth Hour Blog
- News from around the globe tracking Earth Hour events and activities.
- Earth Hour North America
- Join millions of people around the world in making a statement about climate change by turning off your lights for the annual March event, Earth Hour. Learn how the event began, which cities are involved, and how you can make difference all year long.
- Earth Hour Pictures: Before & After the Lights Went Out
- Collection of National Geographic photos capturing city skylines before and during Earth Hour 2009 and 2008.
 Earth Hour UK@
- Earth Hour.org
- Official worldwide site for Earth Hour, the annual event where citizens and governments turn off lights for one hour to make a statement about global warming.
- TheStar.com: Earth Hour
- Toronto Star coverage of Earth Hour, the annual global event where people around the world will turn off the lights in their homes and businesses to conserve power and draw attention to climate change.
- Wikipedia: Earth Hour
- User-created article about Earth Hour, the international event organised by the World Wildlife Fund to call attention to global warming and energy conservation.
- YouTube - Earth Hour Channel
- Coverage of the Saturday, March 29, event where people around the world will be joining together to turn out their lights at 8 p.m. for Earth Hour, taking a stand against climate change.
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