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

NARRATOR: Yes, that is quite a hard sum. It might be easier if we separate the 17 into a 10 and a 7, and the 14 into a 10 and a 4. That gives us a 10, a 10, a 7 and a 4. Let's start by adding the ...

Nearly 1,000 UCSD freshmen test into elementary school math despite stellar high school grades—a crisis 30 times worse than ...

Kyiv's forces appear to be almost surrounded in a key strategic hub described as the "gateway to Donetsk" - and video shows Russian troops making a "Mad Max" entry to the city. Meanwhile, Russia says ...