Air pollution fell substantially as the city restricted car traffic and made way for parks and bike lanes. Over the past 20 ...

Air pollution levels keep getting worse for more people in the US, according to a new report, and experts say the Trump ...

Despite improvements in air quality in past decades, 156 million Americans still breathe in too much soot or ozone, says the ...

Air pollution levels keep getting worse for more people in the U.S., according to a new report, and experts say the Trump administration’s proposed deregulation plans will make it even harder ...