In heavily-paved urban areas, a good downpour can quickly overwhelm a municipal sewer system. But an ancient building technique that’s popular in Europe suggests a way to alleviate the problem: add a touch of green to the roof. Roof-top vegetation provides insulation, cooling and waterproofing; and it can help prevent runoff, too. Here in the […]
In heavily-paved urban areas, a good downpour can quickly overwhelm a municipal sewer system. But an ancient building technique that’s popular in Europe suggests a way to alleviate the problem: add a touch of green to the roof. Roof-top vegetation provides insulation, cooling and waterproofing; and it can help prevent runoff, too. Several German cities […]