It contributes to acid rain, threatening vulnerable aquatic plants and wildlife, and increases plant mortality and reproductive harm on land. The EPA made its decision on the standards under an ...

the EPA changed the emissions limit for sulfur dioxide, a pungent, poisonous gas that smells like a just-struck match and contributes to acid rain. It is released when coal or oil is burned ...

According to the EPA, diesel exhaust contributes to ground-level ozone, which damages crops, trees, and other vegetation and ...

“When faced with having to explain to a court its rationale for approving Colorado’s flawed plan to reduce asthma-causing smog and acid rain, the EPA had no choice but to admit its errors,” said ...