From Brain Drain to Brain Circulation

African Expats Head Home in Increasing Numbers –

http://www.bbc.com/news/world-africa-34924351

Diaspora and the Motherland

http://www.economist.com/news/international/21656176-governments-believe-their-diasporas-can-solve-all-sorts-problems-they-are-picky

Migrant Brainpower

http://www.economist.com/news/international/21656175-migrant-brainpower

Pros and Cons of Worker Remittances

http://www.imf.org/external/pubs/ft/fandd/2009/12/pdf/ratha.pdf