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The first Earth Hour took place in Sydney, Australia, in 2007. It was an idea developed by newspaper The Sydney Morning Herald and WWF. For that first ever Earth hour, 2.2 million homes and businesses in the Sydney area switched off their lights for the period of one hour. In one year Earth Hour grew from that one event in one city to a worldwide movement. In 2008, millions of people, businesses, governments and civic organizations in nearly 200 cities around the globe turned out for Earth Hour. In 2009, Earth Hour took place across 25 time zones in over 4,000 cities and towns, in 88 countries, and involved hundreds of millions of people.

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16y ago

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