Phoenix heat is notorious for the harm it causes in the short-term, like heat stroke and heart problems. Just last year, temperatures there topped 90 degrees Fahrenheit for a record-breaking 188 days.

Exposure to lead in gasoline during childhood resulted in many millions of excess cases of psychiatric disorders over the last 75 years, a new study estimates. Lead was banned from automobile fuel in ...

Florida’s surgeon general said Sunday that he had not weighed the cost – in terms of infections, hospitalizations or deaths – of ending vaccine mandates in the state. But scientists who have done ...