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Urban trees cool the world's cities more than we thought—but we can't rely on them alone
- May 7, 2026 at 3:00 PM
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Cities and towns are usually 1–3°C hotter than the surrounding countryside, because asphalt, concrete and brick absorb heat from the sun and radiate it slowly. Some cities can be as much as 7°C hotter. This effect is known as the urban heat island.
Originally published at Phys.org