Bill Gates, Melinda Gates, Michael Bloomberg, Alfred Sommer

Bill Gates, left, New York City Mayor Michael Bloomberg, second from left, Melinda Gates, second from right and Alfred Sommer, Chairman of the Board of the Albert and Mary Lasker Foundation pose for a photo during the 2013 Lasker Awards ceremony, Friday, Sept. 20, 2013 at the Pierre Hotel in New York. Bill and Melinda Gates received the 2013 Lasker Bloomberg Pubic Service Award. Since 1945 the Lasker Awards has recognized the contributions of scientists, physicians, and public servants who have made major advances in the understanding, diagnosis, treatment, cure, and prevention of human disease. (AP Photo/Mary Altaffer)