Biden slams Trump over his mask-less appearance.

"Which staff members can speak to anonymously, specifically to focus on mental health concerns."

The move is the latest effort by U.S. officials to play down politics around the vaccine and assure public safety.

"What we need in America is leadership that seeks to deescalate tensions, to open lines of communication, and to bring...

 Facebook Inc <FB.O> on Tuesday classified the QAnon conspiracy theory movement as dangerous and began removing Facebook groups and pages...