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G20 Leaders: A who's who gallery

By: Samantha Johnson on Oct. 16, 2009, 11:23 p.m.
President Nicolas Sarkozy

Photo: ZUMA Press

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President Nicolas Sarkozy has been a leading advocate for tougher caps on greenhouse gas emissions since taking office in May 2007, and earlier this month announced France's first carbon tax — beginning in 2010, it will tax 17 euros ($25) per ton of carbon dioxide emitted.