Joel Garreau (born 1948) is an American journalist, scholar, and author.In 1981, Garreau published The Nine Nations of North America. In 1991, he published Edge City: Life on the New Frontier. In 2005, he published Radical Evolution: The Promise and Peril of Enhancing Our Minds, Our Bodies—and What It Means to Be Human. In 2010, Garreau became the Lincoln Professor of Law, Culture and Values at the Sandra Day O'Connor College of Law at Arizona State University.He has served as a fellow at Cambridge University, a Bernard L. Schwartz Fellow at New America Foundation, the University of California at Berkeley and George Mason University. Previously, he was a reporter and editor at The Washington Post.