The Trump administration says only the federal government can set tailpipe emissions standards. It's the latest move in a months long standoff over efforts to weaken a key Obama-era climate rule.
Doctors and nurses are often barred from turning to FDA-approved medications that research shows to be the most effective way to quit. Critics of that policy say stigma is undermining best practice
Medical and genetic data from more than a million Americans are now in scientific databases. Some programs hoard the data, while others share widely with scientists, hoping to speed medical discovery.
Recovery and rescue efforts are underway in the Bahamas after Hurricane Dorian. Also, health officials are looking at the role of vitamin E and vaping in respiratory illnesses.
New Yorkofficials say tests found high levels of vitamin E in cannabis vaping products used by people who developed lung damage. But it's only one of many possible causes still under investigation.
Researchers at the University of Pittsburgh have developed the latest tool to detect THC — the main psychoactive ingredient in marijuana — in a person's breath.
Evacuating away from a hurricane is difficult for elderly people who are ill, don't have access to transportation or live on a fixed income. Slow, rainy storms such as Dorian are particularly tough.
Trees are one of the best ways to fight deadly urban heat, but U.S. cities lose millions every year. And many low-income areas are starting at a disadvantage.