Top Billed Cast

1. 

   Jeff Bridges

   Self / Narrator (voice)

2. 

   Piers Sellers

   Self - NASA Astronaut & Research Scientist

3. 

   Wesley Clark

   Self - General, US Army (ret.); Former NATO Supreme Allied Cmdr.

4. 

   Oren R. Lyons

   Self - Dist Prof of American Studies, Onondaga Council of Chiefs

5. 

   Timothy Morton

   Self - Philosopher & Author, 'Humankind'

6. 

   Bob Inglis

   Self - Former Congressman (R), South Carolina

7. 

   Rich Pancost

   Self - Professor of Biogeochemistry

8. 

   Ruth Gates

   Self - Marine Biologist; Dir. Hawaii Institute of Marine Biology

9. 

   Renée Lertzman

   Self - Author, ‘Environmental Melancholia’

10. 

    Leonard Mlodinow

    Self - Physicist

11. 

    Bruce Hood

    Self - Prof of Developmental Psychology, Univ of Bristol, UK

12. 

    Mark Plotkin

    Self - Ethnobotanist, Amazon Conservation Team

13. 

    Amy Jacobson

    Self - Evolutionary Anthropologist, Human Behavioral Ecologist

14. 

    Daniel Goleman

    Self - Psychologist, Science Journalist, Author

15. 

    Stephan Lewandowsky

    Self - Professor of Cognitive Psychology, University of Bristol

16. 

    Nate Hagens

    Self - Director, Instit. for the Study of Energy & Our Future

17. 

    Joseph Tainter

    Self - Professor of Anthropology, Author

18. 

    Ugo Bardi

    Self - Prof of Physical Chemistry, Univ of Florence, Italy

19. 

    Paul Roberts

    Self - Journalist; Author, 'The Impulse Society'

20. 

    Ian Robertson

    Self - Cognitive Neuroscientist, Trinity College, Univ of Dublin