Acid rain is now caused by nitric rather than sulfuric acid--and it comes from more sources than the earlier acidic precipitation did The acid rain scourge of the '70s and '80s that killed trees ...

Canada has long charged that half the acid rain falling in the eastern part of the country originates from the coal-burning smokestack industries of the northeastern United States. ”We want to ...

If you're over 30, you likely remember a time when there was a lot of hand-wringing and furrowed brows over the ozone hole and skin cancer, as well as the threat of acid rain destroying ecosystems.