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

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

During the 1240s, Richard Fishacre, a Dominican friar at Oxford University, used his knowledge of light and color to show ...

A world-famous light experiment from 1801 has now been carried out with sound for the first time. Research by physicists in ...

Stage 5: Justify thinking. A vital habit that many students need to solidify is recontextualizing after they solve ...

New research from the University of Waterloo is making inroads on one of the biggest problems in theoretical computer science ...

Karolina Wydra talks about her character in Apple TV's new sci-fi standout: the elegant, infuriatingly accommodating Zosia.

Phish bassist Mike Gordon is teaming up with neuroscientists to try to understand the transcendent experience of musical flow ...

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