Worse Than Ebola

U.S. research labs can create even deadlier strains of Ebola, influenza, and other infectious diseases, in so-called “gain-of-function” research. We hear from biosafety expert Edward Hammond on threats from lab-created superbugs. Also, food safety lawyer Bill Marler and health threats from the hormone-altering chemical BPA, from Connie Engel of the Breast Cancer Fund.