Scientists are uncovering new clues that a cosmic explosion may have rocked Earth at the end of the last ice age. At major Clovis-era sites, researchers found shocked quartz—evidence of intense heat ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Sometimes, I'm just casually sitting at my desk, typing away and reading emails, when I place my hand ...

Settled in a seaside hotel during a late fall vacation, I had a quick breakfast overlooking the Pacific Ocean and brought back a few things for a family member, including hard-boiled eggs. The ...

During the historic capture of Venezuelan President Nicolas Maduro, the US military used a secretive weapon capable of bringing soldiers to their knees with just sound waves. Known as the Active ...

Anita C. Chandrasekaran, MD, MPH, is a rheumatologist at Hartford Healthcare Medical Group in Connecticut. She is board-certified in both rheumatology and internal medicine. Symptoms of a swollen ...

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...