Playing with Physics

Who is this crab, and why is he hanging out on the roof of a building on campus? The answer can be found in this week's "Quarked," where I discuss the interesting phenomenon whereby physics is one grand excuse to play with toys.

By the way, there are four crabs and we named them officially today. Their names are Sebastian, Pinchy, Cake, and Turtle... That's the second thing physicists do a lot of, of course- naming things that wouldn't be named normally in an attempt to be clever.