Cooler streets, healthier cities
In many Indian cities, summer temperatures can reach more than 45°C. Concrete and asphalt absorb heat during the day and release it at night, so some neighbourhoods never really cool down. This effect, known as an "urban heat island", is especially strong in areas with few trees.
In recent years, several cities have started planting trees along streets and creating small parks in empty spaces. As a result, some streets are now up to 4°C cooler than nearby areas without vegetation, according to local researchers. Residents also report that they spend more time outdoors and use less air conditioning.
However, experts warn that planting is only the first step: young trees need water and care for at least three years to survive.
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