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On March 27, 2010, World Wildlife Fund is asking individuals, businesses and governments around the world to turn off their lights for one hour to make a global statement of concern about climate change. Register to show your support @
Earth Hour


By turning off their non-essential lighting for one hour—Earth Hour— Americans will join millions of people around the world in their commitment to fight climate change and send a message to elected officials that the time to act is now.

Ultimately, Earth Hour 2010 seeks to raise awareness about climate change and encourage the U.S. Senate to pass legislation and ratify an international treaty that reduces CO2 emissions.

With every flick of a light switch, a vote is cast for lasting action on the escalating climate crisis.

Set Your Clock

On March 27th at 8:30 p.m. local time, Earth Hour will cascade around the globe—from time zone to time zone—uniting the planet under a single, simple, call to action.

Sparking a Movement

Since its inception by World Wildlife Fund three years ago, Earth Hour’s non-partisan approach captured the world’s imagination and became a global phenomenon. Nearly one billion people turned out for Earth Hour 2009 – involving 4,100 cities in 87 countries on seven continents.

Last year, 80 million Americans, 318 U.S. cities and 8 U.S. states officially voted for action with their light switch, sending a clear message to Congress. And in June, 2009, the House of Representatives passed the American Clean Energy and Security Act. Their message and participation was amplified by dozens of iconic landmarks worldwide going dark, including:

  • Empire State Building
  • Brooklyn Bridge
  • Broadway Theater Marquees
  • Las Vegas Strip
  • United Nations Headquarters
  • Golden Gate Bridge
  • Seattle’s Space Needle
  • Church of Latter-Day Saints Temple in Salt Lake City
  • Gateway Arch in St. Louis
  • Sears Tower
  • National Cathedral in Washington D.C.
  • Great Pyramids of Giza
  • Acropolis and Parthenon in Athens
  • St. Peter’s Basilica in Vatican City
  • Big Ben and Houses of Parliament in London
  • Elyse Palace and Eiffel Tower in Paris
  • Beijing’s Birds Nest and Water Cube
  • Symphony of Lights in Hong Kong
  • Sydney’s Opera House
  • Christ the Redeemer Statue in Rio de Janeiro

Register today to show your support at My Earth Hour!

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