Both attack our lungs and incite a similar response by the immune system.
Millions of Americans breathed unhealthy air in 2018.
Cloud seeding could reduce particulate matter over Bangkok.
To capitalize on the sun's rays, countries like China need to part the smog.
Some argue this is another step to take science out of the agency's decision making.
Trump's ethanol plan would be good for farmers, terrible for your lungs.
How it's fighting a perennial pollution problem.
Your quick question, answered quickly.
As temperatures rise, power plants pump out more emissions
Revealing the deadly effects of an invisible pollutant
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