Justices seem divided over EPA mercury limits (Update)

The Supreme Court's conservative justices cast doubt Wednesday on the Obama administration's first-ever regulations aimed at reducing power plant emissions of mercury and other hazardous air pollutants that contribute to ...

Researchers measure atmosphere's self-cleaning capacity

An international, NOAA-led research team took a significant step forward in understanding the atmosphere's ability to cleanse itself of air pollutants and some other gases, except carbon dioxide. The issue has been controversial ...

A closer look at third-hand smoke and its risks

Using state-of-the-art techniques, researchers have gained a better understanding of the complex mix of hazardous chemicals in third-hand smoke—the residual contamination from cigarette smoking—which can linger long after ...

page 1 from 4