Green roofs also retain up to 75 percent of rainfall, so they reduce a city's need to fund costly end-of-pipe solutions -- which, incidentally, are often located in environmental justice communities like mine.
Els sostres verts també retenen fins un 75 per cent de la pluja, per tant redueixen la necessitat de la ciutat d'invertir en costosos manteniments de les sortides de tuberies, que, incidentalment, es troben sovint ubicades en comunitats de justícia ambiental com la meva.