Andrew Guzman
Author, Overheated: The Human Cost of Climate Change
Guests by Last Name
Mike Haas
Founder and Chairman of the Board, Alliance for Climate Education
Mary Hagedorn
Research Scientist, Smithsonian Institution/Hawaii Institute of Marine Biology
Chuck Hagel
Former U.S. Secretary of Defense
Nicolette Hahn Niman
Author, Defending Beef
Barbara Hale
Assistant General Manager, San Francisco Public Utility Commission
Roger Hallam
Co-Founder, Extinction Rebellion
Jeremiah Hammerling
Filmmaker, My Country No More
Ellen Hanak
Senior Fellow and Center Director, Public Policy Institute of California
Ann Hand
Former CEO, Project Frog
Chad Hanson
Research Ecologist
Karen Hao
Contributing Writer, The Atlantic
Amy Harcourt
Co-founder/Principal, Bikes Make Life Better, Inc.
Amy Harder
Energy Reporter, Axios
Dr. Bill Hare
CEO & Managing Director, Climate Analytics
Scott Harmon
Sustainability Advisor, Boy Scouts of America
Kamala Harris
Vice President, United States of America
Doug Harris
Documentary Filmmaker
John Hart
Author, An Island in Time