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

California’s controversial new "gig economy" labor law that went into effect Jan. 1 is already facing fierce opposition from industries that depend on contracted labor, sparking widespread concerns ...

Elsewhere in his Guitar World interview, for which he was joined by Paul Reed Smith, Mayer looked back on the making of the ...

The Denver Broncos had a defensive and offensive explosion against the Las Vegas Raiders on Sunday as the Broncos snapped an eight-game losing streak to their longtime AFC rival at home on a very ...

Below are the current SP+ rankings, last updated after the games of Nov. 8. What is SP+? In a single sentence, it's a tempo- and opponent-adjusted measure of college football efficiency that I ...