Scientists at Washington University in St. Louis have developed a breath test that quickly identifies those who are infected with the virus that causes COVID-19. The device requires only one or two ...

A test to detect opioid drugs in exhaled breath has been developed by engineers and physicians. A breath test could be useful in caring for chronic pain patients as well as for checking for illegal ...

Dan was a writer on CNET's How-To and Thought Leadership teams. His byline has appeared in The New York Times, Newsweek, NBC News, Architectural Digest and elsewhere. He is a crossword junkie and is ...

Researchers have developed a device -- a breath test that uses a biosensor -- as a tool for use in doctors' offices and crowded public locations to quickly diagnose people infected with the virus that ...