Acid rain describes any form of precipitation that contains high levels of nitric and sulfuric acids. It can also occur in the form of snow, fog, and tiny bits of dry material that settle to Earth.

When smog floated above America’s big cities, it caused acid rain. It is sulfuric or nitric acid that falls to the ground from the atmosphere in wet or dry forms in rain, snow or fog. At least one ...

Acid rain is a term that refers to not just rain but also other forms of precipitation such as snow, hail, sleet, and fog that has a higher acidity than normal. Acid rain is caused by the burning of ...

Acid rain seemed like a problem we solved decades ago, but in 2025, signs suggest it’s creeping back in worrying […] ...

NORFOLK, Va. — Acid rain is a serious environmental problem caused by air pollution. It forms when sulfur dioxide and nitrogen oxides are released into the atmosphere, mainly from burning fossil fuels ...