Professor of Economics at Yale University. Co-chairs the Urban Services Initiative at the Poverty Action Lab (J-PAL) at MIT, and leads the Bangladesh Research Program for the International Growth Centre in London. A development economist with interests in environmental issues. Conducts field experiments in Bangladesh, Indonesia, India, Chile, Malawi, Brazil exploring ways to induce people to adopt welfare-improving technologies or behaviors. His research has been published in top journals across disciplines, and covered by leading media outlets around the world.