When scientists sequence tumor DNA, they typically find small amounts of genetic code from bacteria, viruses and fungi—microorganisms that—if actually present in tumor tissues—could influence how they ...

Polarization in the U.S. didn’t rise gradually. A new machine-learning study shows it surged after 2008- but why?

We live in an age where artificial intelligence seems almost magical. Voice assistants understand our requests, recommendation algorithms predict what we'll want to watch next, and chatbots answer our ...