This paper uses historical census data from Burkina Faso to characterize local demographic pressures associated with internal migration into river valleys after onchocerciasis eradication, combined with a new survey of village elders to document change over time and differences across villages...

"This paper describes how governments and philanthropic donors could drive innovation through a new kind of technology contest. We begin by reviewing the history of technology prizes, which operate alongside private intellectual property rights and public R&D to accelerate and guide productivity...