India shows how urban forests can help cool cities – as long as planners understand what nature and people need

For many years, I lived in the Indian city of Chennai where the summer temperatures can reach up to 44°C. With a population of 4.5 million, this coastal city is humid and hot.

Its suburbs are home to 600 Hindu temples and there’s a wildlife reserve called Guindy national park in the heart of the city. Trees line some of the streets but green parks are few and far between – as is the shade.

As urbanisation…

© La Conversation - mercredi 14 janvier 2026