A federal appeals court upheld EPA's designation of PFOA and PFOS as hazardous substances, keeping cleanup liability and the one-pound reporting rule.

A review of 33 reports found that 7.9% of vaccinated measles patients transmitted the virus. Most had a milder illness. What does it mean for families?

Scientists grew 256 tumors from patients, then switched off genes across 162 of them to find the weak points cancers depend on to grow.

Primary breast lymphoma is treated with chemotherapy, not surgery, and published cases show imaging repeatedly pointing clinicians the wrong way.

Neural organoids fall outside the scope of specialized ethics review almost everywhere. Scientists are now split over whether that exemption still holds up.

A pacing wire left after bypass surgery crossed into the left side of an 81-year-old man's heart and was found by chance decades later.

Austrian researchers grew a mouse cerebral cortex in a dish. It made the right cells, but the stem cells abandoned the schedule that a real brain follows.

Louisiana confirmed a Naegleria fowleri infection likely acquired at Lake Claiborne. What swimmers should know for the rest of the summer.

Prince Bakery recalled five breads sold in Bronx and Westchester bodegas after an FDA inspection found undeclared milk and sesame.

CDC now counts 431 Salmonella cases across 32 states tied to jalapeño peppers, up from 345 cases in 27 states, with 57 hospitalized.