Dutch cities use grass-filled paving blocks to absorb rainwater and keep areas cooler

Cities in the Netherlands are experimenting with a greener approach to urban surfaces by using grass-filled permeable paving blocks in places where conventional sealed concrete or asphalt might otherwise be used. These specially designed blocks contain open spaces where grass can grow, while gaps in the surface allow rainwater to pass through rather than immediately flowing into drains. The approach can help reduce stormwater runoff during heavy rainfall and, depending on local soil conditions, allow water to infiltrate into the ground or be temporarily stored below the surface. At the same time, introducing vegetation in place of completely sealed surfaces can contribute to cooler, greener urban environments during hot weather.Why Dutch cities are swapping solid concrete for grass-filled paving blocksConventional roads, car parks and paved public spaces are largely impermeable, meaning rainwater cannot easily soak into the soil beneath them.