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

The oxygen evolution reaction is more relevant to your daily life than you would think. It is used in many electrochemical ...

Scientists at St. Jude Children's Research Hospital have created a database that provides updated predicted structures on a ...

QUANTICO, Va. — President Donald Trump on Tuesday proposed using American cities as training grounds for the armed forces, with U.S. military might being deployed against what he described as the ...