In the 1970s, acid rain was one of the most serious environmental threats in North America and Europe. The air was so laden with pollution from coal power plants and cars at the time that it ...

transnational agreement spearheaded by the Environmental Protection Agency combatted acid rain, which greatly impacted the eastern portion of the continent. Earlier this month, EPA administrator ...

In the '80s, the challenge was to limit acid rain from power plants; now, it's to cut carbon emissions. Walter Bibkow / Photo Library John B. Henry was hiking in Maine's Acadia National Park one ...