Scientists are lugging sophisticated sensors into homes in 10 cities to measure and track the pollution from gas stoves as it drifts from room to room.

The decision gives the Purdue Pharma owners long-sought protection, but it is a major step toward releasing billions of dollars from their fortune to states and communities to help cope with the costs of addiction.

The disgraced founder of the blood testing start-up Theranos, who was convicted of fraud, turned herself in at a minimum-security prison in Texas.

Polygenic risk scores could help patients, including younger ones, understand whether they really need early treatment for heart disease.

More than 200 others could be at risk from a fungal meningitis outbreak that has been traced to two clinics in Matamoros, Mexico, where people traveled for cosmetic surgeries, health officials said.

Recent research shows that most pregnancy-related deaths occur in the year after a baby is born. The discovery is changing how doctors care for new mothers.