This behind-the-scenes video of Tiger Woods at the Hero World Challenge from a few weeks ago isn't exactly illuminating, but it is sort of fun. Woods holds court with a small crowd (while calling ...

a 2 + b 2 = c 2. Remember that from high school math class? That's the Pythagorean theorem, which shows that in a right triangle, where the shorter legs are a and b, the sum of their squares is equal ...

You might think that once a theorem has been proved that would be the end of it. I mean, is there possibly any value in having another proof of something? A new proof certainly doesn't make a theorem ...