An unlicensed driver who inhaled laughing gas just moments before he killed a pedestrian in a hit-and-run crash has been jailed. Cain Byrne, 20, ignored a red light and was driving at more than 50mph ...

FILE - A sign for the U.S. Food and Drug Administration is displayed outside their offices in Silver Spring, Md., Dec. 10, 2020. (AP Photo/Manuel Balce Ceneta, File) WASHINGTON (AP) — U.S. health ...

Nitrous oxide has been used for nearly 200 years for anesthesia and pain relief. Dentists often administer "laughing gas" to people undergoing tooth extractions, root canals and other procedures, ...

Giving birth is no laughing matter, but the gas seems to help. Kate McGovern, a nurse educator and midwife at Brigham and Women’s Hospital in Boston, Mass., demonstrates the equipment that delivers ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. WASHINGTON (AP) — U.S. health officials are ...