Drew L. Kershen is the Earl Sneed Centennial Professor of Law at the University of Oklahoma, College of Law in the United States. He has been a law professor since 1971 teaching, among others, courses on agricultural law and water law. He has a B.A. (University of Notre Dame), J.D. (University of Texas, Austin), and LL.M. (Harvard University). He has focused his lecturing and writing in the area of legal aspects of agricultural biotechnology, including intellectual property rights, regulatory issues, international issues, and legal liability. Professor Kershen participated in the Pontifical Academy of Sciences Study Week on Transgenic Plants for Food Security in the Context of Development, May 15-19, 2009.