Green roof planting module is shown at the EarthFair held in Grand Central Station of New York, April 20, 2010. Many environment-friendly services and products were displayed at the six-day EarthFair which opened Monday to commemorate the upcoming Earth Day on April 22. [Xinhua]
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![Green roof planting module is shown at the EarthFair held in Grand Central Station of New York, April 20, 2010. Many environment-friendly services and products were displayed at the six-day EarthFair which opened Monday to commemorate the upcoming Earth Day on April 22. [Xinhua]](http://images.china.cn/attachement/jpg/site1007/20100421/00114320f5750d389c961b.jpg "Green roof planting module is shown at the EarthFair held in Grand Central Station of New York, April 20, 2010. Many environment-friendly services and products were displayed at the six-day EarthFair which opened Monday to commemorate the upcoming Earth Day on April 22. [Xinhua]")
