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

Director and Founder, The Outlaw Ocean Project

International Legal Director, Center for Biological Diversity

Co-Executive Director, Seed Commons

Reporter, The New York Times

U.S. Senator (D–NJ)

Founder, Urgenda Foundation

Cofounder, People Not Pozos

Earth Scientist and Climate Activist

Fossil Free Research and Fossil Fuel Divest Harvard

Director of the Center for Environment, Community, and Equity & Professor, School of International Service, American University

Founder and CEO, Redwood Materials

Founder and CEO, Good Energy

Writer, Director, Producer

Executive Vice President of Policy and Programs, American Council on Renewable Energy

CEO, Groundswell