Portland's sewer system combines sewage and runoff into the same pipes. Sometimes heavy rains cause those pipes to overflow. But a sewer overhaul 14 years ago has drastically reduced this pollution.

A West Virginia University researcher is working to understand and estimate environmental cleanup costs associated with ...

Ancient Greece produced the earliest records of democracy, western philosophy — and, it turns out, lead pollution. Researchers studying sediment cores recovered from mainland ...

A study published in the New England Journal of Medicine analyzed artery-clogging plaques from over 250 patients and found ...