The Food and Drug Administration suspends more than two dozen gene-therapy studies after a second child in a French genetic experiment is diagnosed with leukemia. Hear NPR's Bob Edwards and Richard Knox.
Since he joined NPR in 2000, Knox has covered a broad range of issues and events in public health, medicine, and science. His reports can be heard on NPR's Morning Edition, All Things Considered, Weekend Edition, Talk of the Nation, and newscasts.