The 11th Hour [Portuguese]

Leonardo DiCaprio

Self - Narrator

Kenny Ausubel

Self - Founder, Bioneers

Thom Hartmann

Self - Author, The Last Hours of Ancient Sunlight

Sandra Postel

Self - Director, Global Water Policy Project

Paul Stamets

Self - Mycologist, Author, Mycelium Running

David Orr

Self - Chair, Environmental Studies Program, Oberlin College

Stephen Hawking

Self - Lucasian Professor of Mathematics, Cambridge University

Andrew Revkin

Self - Author & Science Reporter, New York Times

Paul Hawken

Self - Author, Environmentalist, Entrepreneur

Janine Benyus

Self - Author, Biomimicry

Stuart Pimm

Self - Professor of Conservation Ecology, Duke University

Paolo Soleri

Self - Architect, Founder of Arcosanti

David Suzuki

Self - Scientist, Environmentalist, Broadcaster

James Hillman

Self - Psychologist

James Parks Morton

Self - Dean Emeritus, The Cathedral of St. John the Divine