Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

One of my, and probably everyone’s, biggest gripes with NotebookLM is that it doesn't store chats. Once you close a notebook, ...

Notre Dame head coach Marcus Freeman, left, celebrates with wide receiver Jordan Faison (6) after a touchdown during the ...

Sandbar’s Stream ring turns whispers into editable notes and runs your music with a thumb swipe. The mic stays off until you ...