How to See Without Glasses

Can you keep Psy in focus? And you can download Sean Carroll's audiobook for free at This video was produced from the Radiolab offices - a big thanks to Robert Krulwich for setting up the visit and to Jad Abumrad for use of his desk (even though he was out of town and didn't know). MinutePhysics is on Google+ - And facebook - And twitter - @minutephysics