More and more qualified people are moving from poor to rich countries to fill vacancies in specialist areas like engineering, computing and medicine.
Some people believe that by encouraging the movement of such people, rich countries are stealing from poor countries. Others feel that this is only part of the natural movement of workers around the world.
Many articles here: http://articles.economictimes.indiatimes.com/keyword/brain-drain
The following articles areabout brain drains from Britain, but many of the problems this creates are as bad if not worse when it involves poorer nations.