The technology behind e-cigarettes has changed over the years, and researchers are now finding evidence that the way different sorts of vaping devices and e-liquids interact could harm consumers.
Starting to vape is easy, but quitting a nicotine habit can be tough, teens are finding. Some vaping cessation programs have begun to reach out to teens where they live — on their phones.
Surgeon and researcher Marty Makary traveled the country talking to people about their experiences with health care. He learned that costs are poisoning Americans' relationships with medicine.
Calming techniques officers learn during training for intervening in a mental health crisis don't seem to work as well when a suspect is high on meth. Police say meth calls can be much more dangerous.
As the U.S. grapples with the opioid crisis, pain medication is in short supply in some other parts of the world. One nurse in the Gambia explains how she addresses pain with tools other than drugs.
Research yet again shows teens are glued to their phones to an unhealthy degree. In fact, they may be choosing social media over sleep. But maybe it's not all sad face, researchers say.
If vehicles in central London don't meet emissions standards, their drivers must pay a daily fine. Six months into the new program, the city says the regulation is decreasing toxic air pollution.
The Centers for Disease Control and Prevention is starting to study lung tissue and chemicals from electronic cigarette vapor to track down the root cause of lung damage caused by vaping.