This paper considers the implications for developing countries of a new wave of technological change that substitutes pervasively for labor. It makes simple and plausible assumptions: the AI revolution can be modeled as an increase in productivity of a distinct type of capital that substitutes...

This paper examines water challenges, a growing global concern with adverse economic and social consequences, and discusses economic policy instruments. Water subsidies provided through public utilities are estimated at about $456 billion or 0.6 percent of global GDP in 2012. The paper suggests...