ELIXIR OF HALF-LIFE To be fair, it was not just trend-spotting commercialists like inventor William J. A. Bailey who got swept up in the radiation craze. "Physicians took off with the idea...they tried to use it for every disease under the sun," says Ross Mullner, an associate professor of health policy and administration at the School of Public Health at the University of Illinois at Chicago... ORAU/Roger Macklis