Germany’s capital is becoming a sponge to stop flooding. It might seem counterintuitive to want to gather more water in order to stay dry, but that’s exactly the plan. Currently the city of Houston is suffering some of the worst flooding that its ever seen thanks largely to poor planning around water (like using highways to channel water). Berlin wants to avoid such trauma by working with water than against it.
The idea is simple and practical: do what nature does and store water in plants.