Acid rain used to be a bigger problem, but policies like the U.S. Clean Air Act of 1990 helped mitigate its impact on our ...

We’re already being exposed to it daily.' ...

Acid rain was a bipartisan divide in the U.S. under Ronald Reagan’s presidency. But it wasn’t a Democrat who finally took action; it was his Republican successor, George H.W. Bush.

While acid rain caused by sulfur dioxide is an environmental threat of the past (at least, for now), a new kind of acid is ...