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Open Image ModalA rainbow glows in the sky behind trees in blossom on April 11, 2012, over the city of Geneva. (credit:FABRICE COFFRINI/AFP/Getty Images)
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Open Image ModalA double rainbow forms over a security guard before a game between the Seattle Sounders FC and Sporting Kansas City at Livestrong Sporting Park on August 8, 2012, in Kansas City, Kansas. (credit:Ed Zurga/Getty Images)
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Open Image ModalSailboats parade as a rainbow is seen on July 19, 2012, in the Crozon bay of western France, during the 2012 Tonnerres de Brest maritime festival, which features thousands of traditional sailboats. (credit:FRED TANNEAU/AFP/Getty Images)
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Open Image ModalA steward supervises before the start of the UEFA Super Cup football match Chelsea FC vs Club Atletico de Madrid, on Aug. 31, 2012, at the Louis II stadium in Monaco. (credit:VALERY HACHE/AFP/Getty Images)
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Open Image ModalGeneral view of AT&T Park with a rainbow in the background during the first inning between the San Francisco Giants and the Arizona Diamondbacks on Sept. 5, 2012, in San Francisco, California. (credit:Jason O. Watson/Getty Images)
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Open Image ModalA rainbow stretches above the 18th green and clubhouse as a fierce storm passes through during the pro-am at Royal Liverpool on Sept. 11, 2012, in Hoylake, England. (credit:David Cannon/Getty Images)
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Open Image ModalA rainbow forms over the stadium ahead of the UEFA Super Cup match between Chelsea and Atletico Madrid at Louis II Stadium on Aug. 31, 2012, in Monaco. (credit:Chris Brunskill/Getty Images)
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Open Image ModalA rainbow is seen after a thunderstorm over the Hong Kong city skyline on July 21, 2012. (credit:DALE de la REY/AFP/Getty Images)
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Open Image ModalA rainbow appears before China women's field hockey team practice during a training session ahead of the London Olympic Games at at Riverbank Arena on July 24, 2012, in London, England. (credit:Feng Li/Getty Images)
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Open Image ModalA rainbow during day one of the 21st European Athletics Championships at the Olympic Stadium on June 27, 2012, in Helsinki, Finland. (credit:Alexander Hassenstein/Bongarts/Getty Images)
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Open Image ModalA rainbow is seen over the Dresden Frauenkirche (Church of Our Lady) after a heavy rain shower in Dresden, eastern Germany, on June 25, 2012. (credit:ROBERT MICHAEL/AFP/Getty Images)
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Open Image ModalView of the Iguazu Falls form the Brazilian side on April 11, 2012, in Foz de Iguazu, Brazil. (credit:NORBERTO DUARTE/AFP/Getty Images)