 Activists dressed up as G8 leaders pose with balloons symbolising their countries' amount of carbon emission at an anti-G8 event in Sapporo July 8, 2008, during the G8 Hokkaido Toyako Summit. The Group of Eight leaders are set on Tuesday to take an "important step" forward on fighting global warming, the stickiest issue at their summit, a European Union source said. The two protesters suspended in the air symbolise U.S. President George W. Bush (R) and Canada's Prime Minister Stephen Harper. (Xinhua/Reuters Photo)
 Activists dressed up as G8 leaders pose with balloons symbolising their countries' amount of carbon emission at an anti-G8 event in Sapporo July 8, 2008, during the G8 Hokkaido Toyako Summit. (Xinhua/Reuters Photo)
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