World Wildlife Fund:
Earth Hour 2009 - Toronto, Ontario, Canada
World Wildlife Fund:
Earth Hour
World Wildlife Fund:
Earth Hour
World Wildlife Fund:
Celebrating Earth Hour 2010
World Wildlife Fund:
Atlanta, USA, Earth Hour 2010
World Wildlife Fund:
Fiji, Earth Hour 2010
World Wildlife Fund:
Hong Kong, China
World Wildlife Fund:
Athens, Greece, Earth Hour 2010
World Wildlife Fund:
Cancun, Mexico, Earth Hour 2010
World Wildlife Fund:
Washington National Cathedral, Washington DC, USA, Earth Hour 2010
World Wildlife Fund:
Chicago, USA, Earth Hour 2010
World Wildlife Fund:
Capitol Building, Albany, USA, Earth Hour 2010
World Wildlife Fund:
Istanbul, Turkey, Earth Hour 2010
World Wildlife Fund:
Sao Paulo, Brazil, Earth Hour 2010
World Wildlife Fund:
New York, USA, Earth Hour 2010