VISTA, Calif. — A nine-year-old girl died in March from "methemoglobinemia in the setting of recent nitrous oxide administration" following dental surgery in Vista, the Medical Examiner's Office ...

Denver Health is changing how its doctors administer nitrous oxide, a common anesthetic used to sedate people for surgeries, after realizing how much was being wasted. In the process, they're saving ...

For some young people, a popular method for getting a quick high is by misusing laughing gas — and lately, that’s in the form of nitrous oxide from products sold by the company Galaxy Gas. Those ...

A Hartford dentist’s discovery in the 1840s made pain-free surgery possible, though he never received recognition during his lifetime.