Self / Narrator (voice)

Self - NASA Astronaut & Research Scientist

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

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

Self - Philosopher & Author, 'Humankind'

Self - Former Congressman (R), South Carolina

Self - Professor of Biogeochemistry

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

Self - Author, ‘Environmental Melancholia’

Self - Physicist

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

Self - Ethnobotanist, Amazon Conservation Team

Self - Evolutionary Anthropologist, Human Behavioral Ecologist

Self - Psychologist, Science Journalist, Author

Self - Professor of Cognitive Psychology, University of Bristol

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

Self - Professor of Anthropology, Author

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

Self - Journalist; Author, 'The Impulse Society'

Self - Cognitive Neuroscientist, Trinity College, Univ of Dublin