More poor air quality days are happening in Mass. from wildfire smoke. Does that mean we're all smokers now? Here are the health effects.

There is increasing support among drivers for the banning of diesel cars and SUVs across the UK, due to concerns that they ...

The future of California's cap-and-trade program is in limbo. Experts say the state can't meet its climate goals without it.

Since the 1990s, high levels of several chemicals have been detected in the groundwater and in stormwater runoff in a Durham ...

The Navajo Nation is seeking federal approval to regulate air pollution from smaller oil and gas operations, a shift that ...