Recently, the Chicago Tribune ran a remarkable story based on a recent item in Nature, the venerated scientific publication. Under the headline, "Take One Camera, Call Me In the Morning," journalist Peter Gorner offered the following dispatch:

"A camera, so small that it can be swallowed like a pill, works its way like a tiny submarine through the storm-tossed digestive tract, scouting out disease and sending back pictures of everything it encounters." continued>>