The flight of human capital is a phenomenon that has been of concern to academics and development practitioners for decades. Termed the brain drain, it represents the loss of highly skilled professionals from a source country to a recipient country. Migrants leave one country for another as a result of strong attractions associated with differentials in living conditions, opportunities for professional advancement, and the existence of an environment that is conducive to peace and security. The term brain drain gained currency in the 1950s. Then it referred to emigration of scientists to the United States from countries such as Britain, Canada, and the former Soviet Union. Today, the concept is used to denote the flight of highly skilled professionals and academics from developing to developed countries.