Surgery in UC Hospital operating room, 1924. This photograph from 1924, taken in one of the operating rooms at the University of California Hospital (present day UCSF), is spare and almost austere.

On Thursday the U.S. president ordered the release of federal files related to UFOs and aliens, although no evidence of extraterrestrials visiting Earth is known to exist ...

How big would a telescope need to be to see Earth’s dinosaurs from 66 million light-years away? Think big—and then think ...

The animal lovers at Maymo watch a dog barely reacting to a giant alien head in the room, balancing curiosity, stoicism, and comedic timing. Carney shares details of Trump call over Canada-Michigan ...

Immigration and Customs Enforcement (ICE) officers arrested more than 650 illegal aliens across West Virginia during a two-week statewide operation conducted in coordination with local law enforcement ...

Add Yahoo as a preferred source to see more of our stories on Google. Immigration and Customs Enforcement (ICE) officers arrested more than 650 illegal aliens across West Virginia during a two-week ...

At Davos, the billionaire said his belief that “it might only be us” in the cosmos drives Tesla, SpaceX, and his vision for humanity’s future. Elon Musk proclaimed he’s an alien during a Thursday ...

A financial crisis could be triggered by an announcement that aliens exist, according to Helen McCaw, a former policy expert of the Bank of England. McCaw told The Times of London that politicians and ...

Scientists and NASA officials insist the object is a natural comet, not alien technology. Recent observations found no radio signals from the comet that would suggest it was artificial. The comet made ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The thought experiment suggests that we need to avoid human biases in our ...