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

Explore why Bitcoin's artificial scarcity, economic paradoxes, and declining returns signal higher investor risk.

The Milwaukee Police Department said John Petchul was last seen on Nov. 9 at around 5 p.m. near 39th and Lloyd streets.

Rescuers located the missing female at approximately 11 a.m. after she had been reported the previous day in the Watson ...

An at-risk and endangered missing man, Luke William, was found on Sunday in Oroville. He was last seen on Saturday at 16th ...