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

Some say the reason most manhole covers are round is that a circle cannot fall through a smaller circular hole. Which of ...

Cell division is a process of remarkable precision: during each cycle, the genetic material must be evenly distributed between the two daughter cells. To achieve this, duplicated chromosomes, known as ...

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