In order of appearance:

Jeff Bridges 

Actor, Artist, Producer, Humanitarian

Dr. Piers Sellers 

Director of the Earth Science Division at NASA, Meteorologist and Astronaut

(IN MEMORIAM)

Wesley Clark 

General, US Army (ret.),  former NATO Supreme Allied Commander

Oren Lyons 

Environmental activist and Professor of American Studies 

Dr. Timothy Morton 

Philosopher and Author,’Humankind’ and ‘Dark Ecology’ , Rice University, Texas

Bob Inglis 

Former (R) Congressman, South Carolina, Founder Enterprise and Energy Initiative  

Dr. Rich Pancost 

Professor of Biogeochemistry, Director of the Cabot Institute, 

University of Bristol, UK

Dr. Ruth Gates 

Marine Biologist, Gates Foundation Director, University of Hawaii

Dr. Renee Lertzman 

Behavioural Psychologist, Author, ‘Environmental Melancholia’

Dr. Leonard Mlodinow

Physicist and Author, ‘The Upright Thinkers’

Dr. Bruce Hood 

Professor of Developmental Psychology, University of Bristol UK, 

Author, ‘The Self Illusion’

Dr. Mark Plotkin 

Ethnobotanist, Amazon Conservation Team President

Dr. Thomas Metzinger 

Professor of Theoretical Philosophy, Author, ‘The Ego Tunnel’

Johannes Gutenberg University Mainz, Germany 

Dr. Amy Jacobson 

Evolutionary Anthropologist and Human Behavioural Ecologist

Daniel Goleman Psychologist, Science Journalist

Author, ‘Emotional Intelligence’

Dr. Stephen Lewandowsky 

Professor of Cognitive Psychology, University of Bristol, UK

Dr. Nathan Hagens 

Co-Director Bottleneck Foundation, PHD. Natural Resources, 

Reality 101, University of Minnesota

Dr. Joseph Tainter 

Professor of Anthropology, Author, ‘Collapse of Complex Societies’

Dr. Ugo Bardi 

Professor of Physical Chemistry, University of Florence, Italy

Paul Roberts, Journalist and Author,  ‘End of Oil’, ’The Impulse Society’

Dr. Ian Robertson

Cognitive Neuroscientist, University of Dublin, Ireland