To do so, however, Zimbabwe will need to correct a number of structural weaknesses. For instance, it lacks the critical mass of researchers needed to trigger innovation. Although the infrastructure is in place to harness research and development to Zimbabwe's socio-economic development, universities and research institutions lack the financial and human resources to conduct research and the regulatory environment hampers the transfer of new technologies to the business sector. The economic crisis has precipitated an exodus of university students and professionals in key areas of expertise (medicine, engineering, etc.) that is of growing concern. More than 22% of Zimbabwean tertiary students were completing their degrees abroad in 2012, compared to a 4% average for sub-Saharan Africa as a whole. In 2012, there were 200 researchers (head count) employed in the public sector, one-quarter of whom were women. This is double the continental average (91 in 2013) but only one-quarter the researcher density of South Africa (818 per million inhabitants). The government has created the Zimbabwe Human Capital Website to provide information for the diaspora on job and investment opportunities in Zimbabwe.