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Tokyo, JAPAN: Japanese Environment Minister Yuriko Koike holds a press briefing on Japan's environment policy at the Foreign Press Center in Tokyo, 17 May 2006. 'Cool Biz', the name of a campaign against global warming launched by the government, succeeded in reducing about 460,000 tons of CO2, equivalent to CO2 emissions discharged by about one million households per month. Koike is trying to spread 'Cool Biz' to Asia in 2006. AFP PHOTO/Kazuhiro NOGI (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)

Tokyo, JAPAN:  Japanese Environment Minister Yuriko Koike holds a press briefing on Japan's environment policy at the Foreign Press Center in Tokyo, 17 May 2006.  'Cool Biz', the name of a campaign against global warming launched by the government, succeeded in reducing about 460,000 tons of CO2, equivalent to CO2 emissions discharged by about one million households per month.  Koike is trying to spread 'Cool Biz' to Asia in 2006.    AFP PHOTO/Kazuhiro NOGI  (Photo credit should read KAZUHIRO NOGI/AFP/Getty Images)