Caleb Hellerman is a medical journalist and documentary filmmaker. Since 2015, he has covered science for PBS NewsHour, where he co-developed the Leading Edge series with correspondent Miles O'Brien, and helped to produce films for PBS/NOVA and PBS/Frontline. Hellerman was Supervising Producer of the CNN Medical Unit, where he directed and oversaw the weekly medical program, Sanjay Gupta MD. With Gupta, he also produced more than two dozen specials and a series of medically themed documentaries and magazine shows. He led CNN's coverage of the 2014 Ebola outbreak, as well as the network's coverage of health care reform. His work has won multiple Peabody awards, National Headliner awards and Emmy nominations, the New York Festival award, the Columbus International Film and Video Festival award, the CINE Golden Eagle, and the Freddie International Health & Medical Media award. Hellerman began his network career as a writer and producer for ABC News programs World News Tonight and Good Morning America. After ABC, he was an embedded journalist at the U.S. CDC, working alongside the nation's top disease detectives.