Green Roofs Benefit People, Environment

Excess rainwater flowing into streams and waterways — carrying pollutants and contaminants — is a problem for urban areas across the country. To combat it, an increasing number of cities across the U.S. are initiating programs like rooftop gardens to help absorb the rain, and in some cases also grow food. VOA’s Julie Taboh takes us to a rooftop garden in Washington, a city with one of greatest numbers of green roofs.

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