ClimateNetherlandsNetherlands: Building sponge roofs to prevent flooding01:56This browser does not support the video element.ClimateNetherlandsIsabelle Schaefers08/15/2024August 15, 2024Flooding has become more frequent in Rotterdam, the Netherlands' most populous city and Europe's largest seaport. To combat the problem, officials plan to store large amounts of water on city rooftops.Copy linkAdvertisement