Homes in Jefferson County, Texas, still bear the scars of Hurricane Harvey: black and blue tarps cling to rooftops. Families ...

Ahead of the International Day of Clean Air, here’s a look at what causes air pollution, what it does to people and how the world can rein it in.

Readers respond to a guest essay about throwaway plastic. Also: President Trump the divider; stealth legislation.

A heartbreaking report from South Africa, featuring tough-to-look-at photos, has revealed the devastating impact of fishing ...

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

Maryland has a pollution problem. A recent report from the Sierra Club reveals that over the past several years, residents across Maryland have lived with rising levels of ozone pollution that violate ...

Climate change is driving more frequent and more intense wildfires around the world, including in the United States. These ...

Hanoi’s fight for clean air may not be won within city borders alone. Modelling suggests that about 40–65 per cent of PM2.5 ...

Chinese officials have shut down factories and ordered cars off the roads to try and save their capital city after spending three straight days under a cloud of toxic smog. Visibility has been as low ...