Days with both extreme heat and extreme air pollution are becoming more common – which can't be a good thing for global health

In South Asia, days with both extreme heat and extreme pollution are expected to increase 175% by 2050. Separately, the health effects are bad; together they will likely be worse.

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Four ways people stuck at home became armchair naturalists during lockdown

Citizen scientists have helped researchers track the changing environment during the pandemic.

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Gold rush, mercury legacy: Small-scale mining for gold has produced long-lasting toxic pollution, from 1860s California to modern Peru

Small-scale gold mining operations in developing countries are major sources of toxic mercury pollution, using techniques that haven't changed much since the California Gold Rush 150 years ago.

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What we do and don't know about the links between air pollution and coronavirus

Yes, poor air quality is bad for your health – but beware simplistic correlations with COVID-19.

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How major cities are trying to keep people walking and cycling

As lockdowns ease off, there is a danger that the old city traffic jams will soon be back with a vengeance.

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COVID-19 shutdowns are clearing the air, but pollution will return as economies reopen

From Nairobi to Los Angeles, pandemic lockdowns have cleared pollution from the skies. But those blue vistas may be temporary, and shutdowns aren't slowing climate change.

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EPA decides to reject the latest science, endanger public health and ignore the law by keeping an outdated fine particle air pollution standard

After a 5-year review, the EPA is leaving US standards for fine particle air pollution unchanged, even though recent studies suggest that tightening them could save thousands of lives yearly.

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Combined haze and heat to pummel Southeast Asia more often

Simultaneous air pollution and extreme heat events will "increase in frequency by 175% by 2050" in Southeast Asia, a report finds.

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In Boston, ‘stay-at-home’ orders cleaned the air

"It's as if I magically implemented our most ambitious emissions reduction policies," says Lucy Hutyra, on cleaner air following COVID-19 directives.

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Coronavirus: lockdown's effect on air pollution provides rare glimpse of low-carbon future

As lockdowns have came into effect around the world, air pollution has plummeted.

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