While the populations of many developing countries are rising rapidly, the same cannot be said for the South American nation of Guyana.

A large migration of teachers, skilled people and persons with tertiary education have moved to the United States.

This massive outflow of human capital from Guyana is partly due to domestic policies, low salaries and lack of opportunities. 

The brain drain in this poor nation has been going on for many years as people emigrate in search of a better life.

Al Jazeera's John Terrett reports from Georgetown.