You all may recall the memorable, late Tito the wonder dog. Hank Fox has done something thought-provoking: he has frozen away some of Tito's cells, on the chance of cloning him. At 325 degrees below zero, the essence of Tito sleeps. I got a call today from Genetic Savings & Clone, the company that stores tissue samples of pets, and they told me the culturing of the samples I'd sent them was successful. I now have about 10 million cells waiting for the future moment — if ever — when the...