pacopico writes: "Elon Musk has just come off a pretty amazing run. SpaceX docked with the ISS. Tesla has started selling its all-electric luxury sedan, and SolarCity just filed to go public. Bloomberg Businessweek spent a few days with Musk and got a look inside his insane factories in Silicon Valley and Los Angeles. It's like Willy Wonka time for geeks. Among the other proclamations in the story is Musk saying that he intends to die on Mars. "Just not on impact." Musk then goes on to describe a fifth mode of transportation he's calling the Hyperloop."
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?"