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Climate mitigation

Cooler forests in clean air

Improving air quality by reducing atmospheric aerosols can bring valuable health benefits, but also generally leads to warming. Now, research suggests that in cleaner air the local cooling effect of planting trees may be stronger in middle and low latitude regions.

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Fig. 1: Afforestation and pollution reduction projects are being implemented in many countries worldwide.

xia yuan / Moment / Getty Images


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Correspondence to Liang Chen.

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The author declares no competing interests.

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Chen, L. Cooler forests in clean air. Nat. Geosci. 16, 758–759 (2023).

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