David is a professor in the agricultural and resource economics department at UC Berkeley (UCB). One of the world’s leading experts on policy modeling, he has extensive research experience in economics related to environment, development, agriculture, and international trade. David’s current research spans a diverse set of topics including climate policy, biofuel, China’s development, infrastructure/development linkages, and avian influenza. He holds a Ph.D. in economics from UCB, where his original fields were development and mathematical economics.