Saturday marks the 5th birthday of Earth Hour. Earth Hour will be celebrated in cities worldwide at 8:30pm local time when lights are shut off to raise awareness for climate change.
The event is organized by the World Wildlife Fund (WWF) and began in Australia in 2007 when two million people and 2,000 businesses shut off their lights. In 2008, the event went global with 50 million people participating.
Learn what’s happening in your community and spare an hour for the Earth.
