Only Singapore passes the 30 per cent canopy test in urban forest study

Shady trees are good for health and well-being.

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Thami Croeser Better canopy cover is urgently needed to cool our cities in the face of climate change. Can you see three trees from your home, school or workplace? Is there tree canopy cover shading at least 30 per cent of the surrounding neighbourhood? Can you find a park within 300m of the building? These three simple questions form the basis of the “3+30+300 rule” for greener, healthier, more heat-tolerant cities. This simple measure, originally devised in Europe and now gaining traction around the world, sets the minimum standard required to experience the health benefits of nature in cities.

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