Cailey Cotner / UC Berkeley / AP
In this June 20, 2014, photo, lab manager Kai Hong and Jennifer Doudna work in a laboratory in Berkeley, Calif. The hottest tool in biology has scientists using words like revolutionary as they describe the long-term potential: wiping out certain mosquitoes that carry malaria, treating genetic diseases like sickle-cell, and preventing babies from inheriting a life-threatening disorder.
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