Jeff is a water resource expert and co-founder of the Aquaya Institute, a San Francisco-based nonprofit research and consulting organization dedicated to reducing the global burden of waterborne disease. Before joining Aquaya, Jeff was an American Association for the Advancement of Science (AAAS) Fellow at the US Environmental Protection Agency's Global Change Research Program. From 2002-04, he was a lecturer in Geological Sciences and Environmental Studies at Brown University, and he has also taught at Yale and Columbia Universities. Jeff received his PhD from Yale in 2002, and was a 2005 recipient of EPA's Bronze Medal for his work on drinking water in response to the Indian Ocean tsunami. His current work at Aquaya is focused on the dissemination of innovations in water supply and water treatment to vulnerable populations in low-income countries, with field projects in Kenya, India, and Indonesia. Aquaya’s work is supported by the Lemelson, Mulago, Agora, and Procter & Gamble Foundations, as well as by a consulting practice with such clients as the World Health Organization, CARE, and others. Aquaya works closely with an array of research and implementing partners, including the University of California - Berkeley, the University of Bristol, Sri Ramachandra Medical College (India), PATH, the US Centers for Disease Control and Prevention (CDC), and the Dian Desa Foundation (Indonesia), among many others.