Plants and trees cool themselves and the surrounding environment like this building in Paris, France.
Greening cities have a huge impact. The trees go beyond just lowering temperatures. They help decrease the demand for indoor cooling like air-conditioners saving money.
Some local councils are more tolerant than others in allowing residents to grow food where they want.
Urban residents are increasingly keen to farm verges, parks, rooftops and backyards, but planning rules sometimes stand in the way.
Native plants don’t need much space really.
Simon Pawley/Sustainable Outdoors
It is possible to use small spaces such as transport corridors, verges and the edges of sporting grounds for native wildlife habitat restoration, helping to bring biodiversity back into cities.
The shimmer of a heat mirage shows how a hard road surface increases urban temperatures by radiating heat into the air.
Wikimedia Commons/Brocken Inaglory
It seems like a 'no brainer' to use urban greening to help cities adapt to increasing heat, but the uptake of green infrastructure, such as trees and vegetated roofs, surfaces and walls, is slow. Why?