A "wicked problem" isn't one with an evil nature, but a problem that is impossible or difficult to solve because of incomplete, contradictory, and changing requirements that are often hard to recognize. Classic examples of wicked problems include economic, environmental, and political issues. We now live in a world full of wicked problems, most of them urgent challenges calling out for creative, democratic, and effective solutions. Ed Weber, Denise Lach, and Brent Steel, of the Oregon State University School of Public Policy, solicited papers from a wide variety of accomplished scholars in the fields of science, politics, and policy to address this challenge. The resultant collection focuses on major contemporary environmental and natural resource policy issues, and proposes an assortment of alternative problem-solving methodologies to tackle such problems.