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

Scientists discovered a distant black hole 300 million times the size of the sun. It's a portal back in time. Duffy announces ...

This cinematic video captures a precision challenge between archers performing creative trick shots with bow and arrow.

Novartis has another phase 3 trial win in its quiver for targeted factor B inhibitor iptacopan, building the case for the drug as a new oral therapy for diseases caused by disorders of the complement ...