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Photo by Chi Hung Wong on Unsplash

Air pollution: Roadside emissions sensors help Hong Kong clean its air in world first

Carbon monoxide and nitrogen oxide pollution have fallen sharply in Hong Kong since it introduced a world-first scheme to detect and repair vehicles with the highest emissions.


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Wildfire smoke is hurting your skin

A first-of-its-kind study links wildfires to skin damage. Here’s what you need to know.
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