This document provides an overview of brain drain, including its history, causes, impact in India, potential solutions, and advantages/disadvantages. It notes that the term originated in the 1960s to describe British scientists and intellectuals who emigrated to the US. Key push factors driving emigration include lack of opportunities and stability, while pull factors involve better pay, facilities, and living standards abroad. India has been significantly impacted by losing over 950,000 immigrant scientists/engineers since 2003. Potential solutions center on improving incentives for skilled workers to remain in India.