Zothecula writes: In the past year alone, Swiss research institute EPFL (École Polytechnique Fédérale de Lausanne/Swiss Federal Institute of Technology) has brought us things such as a mini ionic motor for satellites, “nano velcro” that removes pollutants from water, and a system that allows paralyzed rats to walk again. While none of these items will ever likely be available to regular consumers, now there is a piece of EPFL-developed technology that you can get your hands on. It’s an open-source educational robot known as Thymio II, and it only costs a little over a hundred bucks.
Today's scientific question is: What in the world is electricity?
And where does it go after it leaves the toaster?
-- Dave Barry, "What is Electricity?"