Green roofs are roofs that have plants and grasses on top of them. They offer a number of benefits including being an innovative tool to reduce stormwater runoff. Normally, rainwater rushes from rooftops and other hard surfaces into nearby streams and rivers. In highly urban areas, this sudden surge of water can erode the banks of these streams and rivers. Because of the vegetation on top of green roofs, the rainwater that would have poured from the roof is captured by the plants. Green roofs are becoming more popular – SunTrust Bank Headquarters in Richmond, Virginia installed one on its building. and a number of federal government buildings are also getting green roofs.
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