Lucille Teasdale. Deborah Cowley

Canadian surgeon Lucille Teasdale and her husband founded Lacor Hospital in northern Uganda in 1961. For 35 years the two doctors treated such contagious diseases as malaria, TB, and AIDS, and Teasdale performed thousands of operations under difficult conditions. They lived through civil war, hostage takings, and epidemics. Teasdale received the highest humanitarian awards from the U.N. for her lifes work in Africa.