| A man listens to music inside a solar-powered environmental structure at the National Mall in Washington D.C., the United States, April 19, 2010. A massive Climate Rally will be held in the US capital on Sunday to commemorate the 40th anniversary of Earth Day. [Xinhua] |
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![A man listens to music inside a solar-powered environmental structure at the National Mall in Washington D.C., the United States, April 19, 2010. A massive Climate Rally will be held in the US capital on Sunday to commemorate the 40th anniversary of Earth Day.[Xinhua]](http://images.china.cn/attachement/jpg/site1007/20100420/00114320f5750d37822d5a.jpg "A man listens to music inside a solar-powered environmental structure at the National Mall in Washington D.C., the United States, April 19, 2010. A massive Climate Rally will be held in the US capital on Sunday to commemorate the 40th anniversary of Earth Day.[Xinhua]")
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