Erico Guizzo says: "Japanese roboticist Masaaki Kumagai has built wheeled robots, crawling robots, and legged robots. Now he's built a robot that balances and rides on a bowling ball. You say why? Kumagai says why not?"
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. His new book is Maker Dad: Lunch Box Guitars, Antigravity Jars, and 22 Other Incredibly Cool Father-Daughter DIY Projects