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

China’s assertiveness in the South China Sea has steadily increased, resulting in heightened tensions with Southeast Asian claimant states, particularly the Philippines, at the Second Thomas Shoal in ...

GARY — Two days after his reelection, Gary Common Council President Ronald Brewer faces felony charges for allegedly intimidating and kidnapping a young boy he believed to be involved in the September ...