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

Your emotions can be an important guide to help you think better, except when they don't. A new study suggests how to ...

Scientists have discovered that dark matter, the universe's most mysterious "stuff," obeys gravity on vast cosmological scales. This could help to dismiss the possibility of a fifth fundamental force ...

Final grades are due for Jude Mathews, a professor of chemistry and chemical biology, but her students aren’t the only ones ...