Brain drain is emerging as a significant problem for countries across the globe. While the issue is more dominant in developing countries, it is also increasing in a number of developed countries as well implying that a number of scientists, doctors and engineers and other skilled professionals are moving to greener pastures in order to find better opportunities. Brain drain is one of the biggest challenges being faced by nations and poses a threat at political, economic and social levels. This article details on how brain drain contributes to various political, economic and social issues in a country.