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Articles on Air pollution

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Reduced traffic during lockdowns led to decreases in air pollution in many major cities in Europe. (AP Photo/Emilio Morenatti)

COVID-19 lockdowns improved air quality in some cities, shedding light on how to curb pollution

While most areas experienced a reduction in air pollution in response to lockdown measures, other areas saw only small improvements or even an air quality deterioration.
Older homes can have a variety of environmental health risks. Kerry F. Thompson and Ryan T. Wilson

Fixing indoor air pollution problems that are raising Native Americans’ COVID-19 risk

Poor indoor air on tribal lands can cause a range of respiratory illnesses, including viral infections. Here’s how people are fixing the problem while preserving traditional ways.
Air pollution exposure during mid to early life may be more important to developing Alzheimer’s disease than doctors realized. Cecilie Arcurs via Getty Images

Air pollution may contribute to Alzheimer’s and dementia risk – here’s what we’re learning from brain scans

The tiny air pollutants known as PM2.5, emitted by vehicles, factories and power plants, aren’t just a hazard for lungs. A study finds more brain shrinkage in older women exposed to pollution.
Sampling wildfire smoke sometimes means sticking a tube out the window of an airplane. Brett Palm/University of Washington

Wildfire smoke changes dramatically as it ages, and that matters for downwind air quality – here’s what we learned flying through smoke plumes

Thousands of chemical compounds in wildfire smoke are interacting with each other and sunlight as the smoke travels. For people downwind, it can become more toxic over time.

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