phantom limbs

How's this for innovation?: electronic cigarettes. Little white tubes that look like the real thing have a nicotine solution that's heated by a battery, and the user exhales a water vapor that looks like smoke. The FDA isn't quite sure what to make of them, although the manufacturer is clear: "It is not a drug, if you will. This is an adult smoking experience."

Also in today's links: a battle over pork and science, scratching an itch with a phantom limb, and more.