Pollution

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

The Goldman Environmental Prize has announced its 2023 awards. Three winners speak about their efforts to protect wilderness and fight polluters

Through “bike buses,” more pedestrian-friendly streets and electric vehicles, some cities are making strides in decarbonizing transportation

The president is creating an Office of Environmental Justice and expanding federal protections for communities that have been historically overburdened by pollution

In the Great Pacific Garbage Patch, plastic creates strange communities that bring coastal and open-ocean animals together