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MNN's 2009 photos of the year

Pittsburgh prepares for world leaders ... and demonstrators

Photo: Jeff Swensen/Getty Images

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Pittsburgh prepares for world leaders

A group of protestors rappel on Sept. 23 from the West End Bridge in Pittsburgh with a banner denouncing climate change. The protesters were hoping to take advantage of the media swarm ahead of the G-20 summit, which brought international leaders to Pennsylvania for a two-day session.