From the perspective of building domestic capabilities, the challenges for policymakers are first, how to keep educated people from leaving by developing opportunities at home, and second, how to draw those participating in the diaspora back to the country, or find other ways to encourage them to share their expertise and skills and form business linkages (United Nations Conference on Trade and Development, 2007). China has set up more than 100 special high-technology parks to draw back nationals from overseas (Dahlman, 2008). In Taiwan Province of China, there is a State information clearing house for potential employers and returning researchers, with airfare and other subsidies for those who return (Davone, 2007). While newly industrialized countries such as China can take advantage of the temporary migration of students and workers to develop scientific capacities, very few African countries are in this position.