According to a report by NPR’s Kathleen Schalch, Washington, D.C. will become the first major city to require that private developers build “green” buildings. New structures will have features such as green roofs, natural light, fume-free carpets and paint, low-flow water fixtures and no-flush urinals, which use a chemical trap instead of water. The new stadium for the Washington Nationals is expected to be the first stadium in the nation certified by the Green Building Council.

Click here to listen to Schalch’s report.