Dutch cities are replacing solid concrete surfaces with grass-filled paving blocks that absorb rainwater and help keep urban 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.