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Alex Pfaff is a Professor of Public Policy, Economics and Environment at Duke University. Trained in economics, his focus is how economic development interacts with the environment & natural resources and, given that, how to improve policy impacts. He studies the adoption and forest impacts of both environmental policies — protected areas, ecoservices payments, production certifications/standards — and development policies such as roads and forest concessions (in the Brazilian Amazon, Costa Rica, the U.S., Panama, Madagascar, Mexico, Peru, Cameroon and Bolivia). He also studies water management institutions (in the Brazilian Northeast, Colombia and Mexico), factors in the reduction of harmful environmental exposures (groundwater arsenic in Bangladesh, indoor air pollution in China and Pakistan) and incentives for corporations to self-audit and disclose (U.S.).