Sandstorms pose serious risk to human health

Sandstorms have engulfed the Middle East in recent days, in a phenomenon experts warn could proliferate because of climate change, putting human health at grave risk.

Remote work may be keeping some cities' air cleaner

In the spring of 2020, COVID-19-related restrictions in the United States led to reductions in nitrogen oxide (NOx) emissions because of the sudden drop in road traffic. But even after restrictions were lifted and the flow ...

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