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Pollution

Pollution

Why is winter air responding to pollution cuts so slowly?

26 Jul 2018 Liz Kalaugher
Photo of coal-fired power plants in the Ohio River Valley (Courtesy: Joel Thornton/University of Washington).
Coal-fired power plants in the Ohio River Valley, seen here from an aircraft in the 2015 WINTER campaign, release sulfur and nitrogen oxides. (Courtesy: Joel Thornton/University of Washington)
Over roughly the last decade, air quality regulations have lowered sulphur dioxide pollution in the

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Liz Kalaugher is a freelance science journalist based in Bristol, UK
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