Millions of Americans across the Midwest, Northeast and swathes of the South and Southwest are under air quality alerts Monday. Newsweek's live blog is closed.

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When wildfires burn, the smoke can travel long distances and degrade air quality far away, which presents risks for those breathing it.

Russia attacked Ukraine's capital with missiles and drones overnight, killing at least six people including a 6-year-old boy ...

A powerful earthquake struck Wednesday off Russia’s Far East coast, flooding a fishing port with waves from a tsunami, ...

Many astronomers are growing increasingly concerned that these outdoor lighting from roads, buildings and elsewhere could ...

British researchers say data from more than 29 million people across four continents strengthens the evidence of a link ...

A groundbreaking study led by Oregon State University scientists shows that multiple Portland neighborhoods have levels of ...

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