The when, where and what of air pollutant exposure

Scientists have linked air pollution with many health conditions including asthma, heart disease, lung cancer and premature death. Among air pollutants, fine particulate matter is especially harmful because the tiny particles ...

US clean-air efforts stay on target, analysis shows

National efforts in the last decade to clear the air of dangerous particulate matter have been so successful that most urban areas have already attained the next benchmark, according to new research by Rice University.

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