Susan Hough, seismologist, U.S. Geological Survey
John Sorensen, researcher, Oak Ridge National Laboratory
James Bagian, director, Center for Health Engineering and Patient Safety at University of Michigan
In the wake of the natural and nuclear disasters in Japan, many are wondering: When is safe, safe enough? Can any business, city or country be fully prepared for the unthinkable? Risk assessors talk about the choices that must be made to balance safety with practicality and cost.