Sponge garden
The climate is changing: the rain is heavier and the dry periods between are lasting longer. How can we moderate these two extremes? A lot of rain water currently drains through sewers to prevent flooding. However, that does not always work and increases the problem of drought.
One way to deal with this; is to have our urban greenery function like a sponge. A sponge can moderate these extremes; it can absorb water quickly, hold it temporarily and gradually return the water to the subsoil.