Today, when many parents seem reluctant to have their children vaccinated, even with long proven medications, the Salk vaccine trial, which enrolled millions of healthy children to test an unproven medical intervention, seems nothing short of astonishing. In Selling Science, medical historian Stephen E. Mawdsley recounts the untold story of the first large clinical trial to control polio using healthy children--55,000 healthy children--revealing how this long-forgotten incident cleared the path for Salk's later trial. Mawdsley describes how, in the early 1950s, Dr. William Hammon and...