‘Sponge Cities’ Are Catching On. But Can They Handle Supercharged Storms? (opens in new tab)

In 2011, a short but catastrophic cloudburst hammered Copenhagen, flooding parts of the Danish city with more than 5 inches of rain in a single day. The storm caused more than $1 billion in damages. It also catalyzed a transformation across the city. Officials spent the next decade implementing a matrix of green spaces and […]