Copenhagen implements 'sponge city' infrastructure to manage extreme rainfall and flooding
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…
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Appeared in: 2026-06-17 (#20)