Pollution

Satellite monitoring of air quality could help reduce premature death from smoke exposure

Formerly “adjacent” wetlands in more than half of all states may be dredged or filled now that their federal protections have been stripped

Wildfire smoke not only contains dangerous-to-breathe particles but also can react with urban air pollution to create toxic ozone

Most of the eastern U.S. has been swathed in smoke billowing off more than 400 wildfires across Canada

Experts explain what wildfire smoke does to your health—and how to protect yourself

Here’s how to read the Air Quality Index and protect yourself from unhealthy air

Good news: the world is discussing a treaty to stem plastic pollution. Bad news: fossil-fuel interests are trying to weaken it

The Montreal Protocol was intended to save Earth’s ozone layer, but it also helped slow global warming and delayed the melting of Arctic sea ice

Used diapers can replace up to 40 percent of the sand that is typically used in making concrete, lowering costs and keeping more trash out of landfills

The EPA has announced new draft rules that would require power plants that burn fossil fuels to capture 90 percent of their climate-warming emissions

The country’s largest estuary is under critical threat from pollution and climate change. The question is: Can it be saved?

Researchers figured out how the flow of microplastics flattens ocean waves, letting satellites paint a clearer picture for future policy and cleanup efforts