Whistleblowers can ruin lives - and can save them. Is it worth it? Roberta Ann Johnson explores when and how - and to what effect - people make the choice to blow the whistle. Engrossing case studies from the tobacco industry, to NASA, to the FDA illustrate clearly how individual efforts can and do transform institutions, shape public policy, and serve as a force for democratization. Roberta Johnson explores when and how - and to what effect - people make the choice to blow the whistle.