Another book added to my cart on Amazon: Borderless Economics (written by Robert Guest, The Economist’s Business Editor).
Among other things, the book tackles brain drain and global poverty, how migration fosters innovation and cultural syncretism and how it is infecting China with ideas that will eventually turn it democratic.
You may find the author talking about the book here (a 15 minute Interview).
By the way, there is another book on migration that might interest you (available for free download.): The State of Environmental Migration (SEM) 2010. It's a co-publishing by IDDRI and the International Organisation for Migration (IOM), edited by François Gemenne, Pauline Brücker and Joshua Glasser. I thank Ojima for the tip!
soundtrack: Crave You ft. Giselle