A combined photo taken on April 19, 2010 shows earth models that will be displayed on Earth Day in Washington D.C., the United States. 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 combined photo taken on April 19, 2010 shows earth models that will be displayed on Earth Day in Washington D.C., the United States. 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/site1007/20100420/00114320f5750d37819c55.jpg "A combined photo taken on April 19, 2010 shows earth models that will be displayed on Earth Day in Washington D.C., the United States. A massive Climate Rally will be held in the US capital on Sunday to commemorate the 40th anniversary of Earth Day. [Xinhua]")
