Dr. John G. Meara, the Steven C. and Carmella R. Kletjian Professor of Global Health and Social Medicine in the field of Global Surgery in the Blavatnik Institute at Harvard Medical School and Jake Miller, writer and editor for Harvard Medical School’s Office of Communications and External Relations talk about the issue that nearly half of the world's population lacking access to basic diagnostics. Read the article, Working in the Dark, in the News & Research section of the Harvard Medical School website.