World

Cities across the globe celebrate Earth Hour

Updated 8:01 AM ET, Sun March 24, 2013
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South Korean students hold Earth Hour LED displays during the 7th annual Earth Hour global warming campaign in Seoul on March 23. KIM JAE-HWAN/AFP/Getty Images
Photosshows The Eiffel Tower submerging into darkness at 8:30 pm local time as part of the Earth Hour switch-off. BERTRAND LANGLOIS/AFP/Getty Images
This photo combo shows the landmark Tokyo Tower beside the Zozoji Temple illuminated before Earth Hour. TOSHIFUMI KITAMURA/AFP/Getty Images
TheTokyo Tower with lights turned off during Earth Hour. TOSHIFUMI KITAMURA/AFP/Getty Images
This combo photo shows the 508-meter-high Taipei 101 building illuminated and with lights turned off during Earth Hour in Taipei. SAM YEH/AFP/Getty Images
This picture shows the Sydney Opera House illluminated shortly before the start of the annual Earth Hour. SAEED KHAN/AFP/Getty Images
The Opera House is seen after the lights were switched to 'GreenPower' and glowed dark green to recognize Earth Hour. Lisa Maree Williams/Getty Images)
Some of the offices of a building have the lights on to shape a bicycle in downtown Warsaw. ANEK SKARZYNSKI/AFP/Getty Images
Balinese men burn lanterns during Earth Hour at a hotel in Nusa Dua on the resort island of Bali. SONNY TUMBELAKA/AFP/Getty Images
The ancient Temple of Parthenon atop the Acropolis hill before Earth Hour in Athens. ARIS MESSINIS/AFP/Getty Images
TheTemple of Parthenon atop the Acropolis hill during the Earth Hour in Athens. ARIS MESSINIS/AFP/Getty Images
The silhouette of the Chillon Castle is seen with lights off on the edge of Lake Geneva near Montreux during Earth Hour. FABRICE COFFRINI/AFP/Getty Images
In this combo photo large electronic billboards stand dark on Times Square as their lights were turned off to mark 'Earth Hour' in New York.
In this combo photo The Empire State Building stands dark as its lights were turned off. EMMANUEL DUNAND/AFP/Getty Images
Members of Palestine Wildlife Society outline the star of Bethlehem with candles at the Manager Square in front of the Church of the Nativity in the West Bank town of Bethlehem on March 23 to mark the Earth Hour for the first time in Palestine. MUSA AL-SHAER/AFP/Getty Images