James Gustave Speth

Environmental Lawyer and Advocate

Andrew Hoffman

Holcim (US) Professor of Sustainable Enterprise at the University of Michigan

Erin Schrode

Expert Advocate for Health, Sustainability & Environmental Education; Named "America's Green Girl" by OK Magazine

Achenyo Idachaba

Head of MitiMeth, A Nigeria-Based Environmentally Aware Production Company

Michael Shellenberger

Founder & President of Environmental Progress; Expert on Energy, Climate, Security, Human Development and Politics

Barrie M. Osborne

Academy Award-Winning Film Producer & Director Known for "The Lord of the Rings" Trilogy, "The Matrix" & "Talk Is Cheap," an Environmental-Themed Family Drama

Mark Steyn

Author and Commentator, Leading Canadian Human Rights Activist

Ric O'Barry

Wildlife Activist, Author & Founder of the Dolphin Project; Star of the Academy Award-Winning Documentary "The Cove"

Carrie Hessler-Radelet

President & CEO of Global Communities

Sharing Your Story to Create Change with Carrie Hessler-Radelet

Ron Sims

Former Deputy Secretary for the US Department of Housing and Urban Development

Michael Metcalfe

Financial Expert and Commentator

Chris McKnett

Co-head, Sustainable Investing at Allspring Global Investments

Calum Worthy

Canadian Actor & Environmental Activist

Bindi Irwin

Wildlife Conservationist & Daughter of Steve Irwin; Season 21 Contestant on "Dancing With the Stars"

Bandi Mbubi

Founder, CongoCalling - Director of MannaCentre - Trustee at ChurchPoverty - working for Peace, Justice, and Prosperity in the UK, the Congo and around the world

Danny Kennedy

Danny Kennedy– a passionate activist, successful cleantech entrepreneur, noted author and recognized opinion leader on global environmental issues.

Emily Hunter

A force behind youth environmental activism, journalist/activist/filmmaker Emily Hunter calls for advocacy and action in her campaign “Activism 2.0″.

Kent Connaughton

Regional Forester of the USFS Pacific Northwest Region

Cassandra Moseley

Director of the Ecosystem Workforce Program in the Institute for a Sustainable Environment at the University of Oregon

Brian Palik

Team Leader / Research Ecologist for the Center for Research on Ecosystem Change at the USDA Forest Service Northern Research Station

Bernie Sanders

U.S. Senator, Vermont; Longest Serving Independent Member of Congress in American History; 2016 & 2020 Presidential Candidate

Jon Waterhouse

Explorer at National Geographic Society

Michael Lombardi

Diving Scientist, Technologist & Environmentalist

Teresa Palmer

Actress, Writer & Model

Greg Asner

Globabl Ecologist & Conservative Director at ASU

Greg Asner on Global Monitoring of Carbon, Corals & Forests

Christiana Figueres

Expert on Global Climate Change; Former Executive Secretary of the UN Framework Convention on Climate Change

Nicholas Stern

Chair, Grantham Research Institute on Climate Change and the Environment, United Kingdom

Naomi Oreskes

Geologist & Earth Science Historian

David Keith

Professor and Founding Faculty Director of the Climate Systems Engineering Initiative at the University of Chicago

A Case for Integrating Solar Geoengineering into Climate Policy

David Crane

Strategic Advisor Executive at Pegasus Capital Advisors; Former President & CEO of NRG Energy, Inc.; Climate Advocate