Hartwell Paper: A New Approach on Global Climate Policy

Ted Nordhaus is Founder and Executive Director of Breakthrough.

Dan Sarewitz is Co-Director, Consortium for Science, Policy & Outcomes, and Professor of Science and Society at Arizona State University.

Michael Shellenberger is founder and president of Environmental Progress, co-author of An Ecomodernist Manifesto, and a co-founder of the Breakthrough Institute.

Roger Pielke, Jr. is a Professor in the Environmental Studies Program at the University of Colorado at Boulder and a Fellow of the Cooperative Institute for Research in Environmental Sciences (CIRES).

Steve Rayner was the James Martin Professor of Science and Civilization at the University of Oxford, where he was the Founding Director of the Institute for Science, Innovation and Society.