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

CDOT wants to widen I-270 to speed traffic and heighten safety, but clean transportation advocates say the old solutions are no longer relevant.

For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Parsva Bakasana or the Side Crane Pose is good for strengthening the arms, wrists and shoulders and improving balance. In ...

A century ago, a star in Andromeda named V1 launched a revolution in astronomy, revealing its true immensity and the origin ...

Mathematician Grigori Perelman solved the Poincaré conjecture, and then rejected the $1 million prize that came with it.

A bride who had both legs amputated following a snowboarding accident proudly walked down the aisle using new prosthetics.