JAMES GRIME: We love pi, of course. Everyone loves pi. But one of my favorite pi facts is-- and I think it's fun. You only need 39 digits of pi to be able to measure the circumference of the...
ANTONIO PADILLA: Imagine you had a universe which was a googolplex meters across, OK, so a big universe. Then, that's very big. And if you actually traveled far enough in that universe, you...