NEW YORK, NY - JANUARY 12: Former President Jimmy Carter attends "Countdown To Zero: Defeating Disease" preview press conference at American Museum of Natural History on January 12, 2015 in New York City. (Photo by Andrew Toth/Getty Images)
NEW YORK, NY - JANUARY 12: Former President Jimmy Carter attends "Countdown To Zero: Defeating Disease" preview press conference at American Museum of Natural History on January 12, 2015 in New York City. (Photo by Andrew Toth/Getty Images)