from the think-about-little-johnny dept.
Daniel_Stuckey writes "The technology is here. So-called 'smart guns' are being programmed to recognize a gun owner's identity and lock up if the weapon ends up in the wrong hands. Entrepreneurs and engineers have been developing technology to make safer guns since the early '90s, and by now we've got working prototypes of guns that read fingerprints, hand grips or even sensors embedded under the skin. But after 15 years of innovation, personalized guns still haven't penetrated the marketplace."
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?"