While acid rain caused by sulfur dioxide is an environmental threat of the past (at least, for now), a new kind of acid is proliferating in rain water—as well as groundwater, ice cores, and even human ...

Saskatchewan Acid rain falling on Sask. from Alberta oilsands, says lobby CBC News · Posted: Aug 10, 2009 5:24 PM PDT | Last Updated: August 10, 2009 ...

Acid rain, which is caused when pollutants such as nitrogen oxide and sulfur dioxide infiltrate precipitation, was largely mitigated by the passage of the U.S. Clean Air Act in 1990, and by the ...

Earlier this month, EPA administrator Lee Zeldin announced the roll back of 31 regulations—many of which protect the U.S. from acid rain and other forms of atmospheric pollution.

Its name is Trifluoroacetic acid (TFA), a kind of “forever chemical” that, for decades, has been steadily increasing in rain water—but not just rain water.

Its name is Trifluoroacetic acid (TFA), a kind of “forever chemical” that, for decades, has been steadily increasing in rain water—but not just rain water.