Scientist, Author

Author, Generation Hot

CEO and Co-Founder, Aclima

Former CEO, Sprint

Oceanographer and Professor, Earth and Planetary Sciences, UC Davis

Senior Fellow for Climate Change Policy, Council on Foreign Relations

Director, Melbourne School of Design

National Warehouse Program Manager, Greenpeace

Senior Director, Climate Imperative

CEO, Carbon Tracker Initiative

Acting Executive Director, TransForm

Professor Emerita, University of California Berkeley

President and CEO, Save the Redwoods League

Gun control activist; Cofounder, March for Our Lives, Leaders We Deserve

Co-founder, DeSmog Blog

Physician, Co-chair of Miami-Dade’s Heat-Health Task Force

Professor of Environmental Policy, Harvard Kennedy School of Government

Director of Climate Programs, ICLEI

Professor, Urban and Environmental Policy Planning, Tufts University