weather

Environment

Canada is burning and America is choking on its smoke

Updated

Canada's wildfires are sending smoke billowing south, thanks to the jet stream and changes in the location of high pressure systems across the US. All that smoke has led to air quality alerts around the US — from the Pacific Northwest to the Upper Midwest.

Science

How the warming Arctic might be behind Boston's deep freeze

Updated

There may be a counterintuitive explanation for the deep freeze that hit New England this winter: The rapidly warming Arctic is causing big disruptions in the jet stream, which carries weather across North America. Is this the worst winter you've experienced?

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