Executive Director, Initiative for Responsible Mining

Activist and Actor

Mayor, Rawlins, Wyoming

President, Citizens for Responsible Energy Solutions

Reporter, E&E News

Co-Director, Climate Litigation Network, Urgenda Foundation

Lead Scientist, Science Hub for Climate Litigation, Union of Concerned Scientists

Senior Fellow, Sabin Center for Climate Change Law, Columbia Law School

Chief Heat Officer, Freetown, Sierra Leone

Global Chief Heat Officer, UN Habitat

Managing Director of Policy, Nio Terra