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David Harrison Quynhanh Do Gretchen Biermann Issac Indi Iaku Sigindioy Chindoy John Robbins Chris Hayes Bob Schaeffer Stacy Mitchell Laurence Kemball-Cook Christian Felber Phyllis Young Martha Conklin Edward Burtynski Arne Naess Justin Winters Sobunfo Some Winona LaDuke Jessica House Mychal Tetteh Audrey Hope Berta Cumez Skander Spies Ioannis Ioannou Astra Taylor Willie Nelson Nati Greene Bill Bryson Dr. Marcus Eriksen Cecilia Reyes Guy Reiter Robert Bullard Paul Cienfuegos Esau Sinnok Michael Murphy Stephanie Pincetl Tom 'Putuparri' Lawford James Lovelock Donald Blair James Newcomb Lucy Wisdom Doreen Boghan-Martin Guy Dauncey Akaya Windwood Doug Tompkins Stephen Dinan Peter Cozad Matt Briggs Miles Richardson, O.C Aimee Roberson Danielle Greendeer Ervin Laszlo Dirk Forrister Mohamed Waheed Roberta Phillip-Robbins Geeta Aiyer Jessica Cheam Fernando Holguin Felle VEGA Randy Woodley Franklin Lasky John Wick Mary Donnell Chetan Singh Solanki Rick Rybeck Desari Strader Fritz Hinterberger Danat Tekie Jackie Savitz Genevieve Nelson Dejah Powell Tim Flannery Marco Obiso Lisa Crawford Sean Robbins Ken Webster Wendy Van DIlla Denise Morrison Grandmother Jane Meader Roger Stearne Jonathan Healy Mauricio Agon Angelique Cofield Alex Steffen Amory Lovins Heru Prasetyo Helena Norberg-Hodge James O''Dea George Siegal Jeff Corntassel Andrew Revkin Cat Brooks James Geary Marianne Williamson Luisa Daniel Perez Dr. Akira Miyawaki John Trudell Michael Mann Mahjabin Khanzada Vint Cerf James Hansen Jessica Guynn Maike Acosta Rev. Tara Wilkens Gideon Rosenblatt Baltasar Garz Danny Glover Guy Bigwood Jim MacNeil Gregory Kallenberg Christophe Mali Baba Brinkman Abby Goodnough George Serafeim Anna Lee Dr. Jim Kim Ginger Hodge Steven Gorelick Sebastian Copeland Daragh Anglim John Little Segunda Velasquez Frederick Smith Duane Elgin Geraldine Patrick Encina George Clooney Ursala Sladek Vivian Dr. Tatiana Gary Cohen Simon Baron-Cohen Jeremy Rifkin Pamela Kingfisher Glynda Carr Nigel Sizer Peter Russell Lidy Nacpil Davida Hertzl Mary Gentile Stan Senner Ray Anderson Dominique Conseil George Clarke Christoph Stückelberger Josh Tapen David MacDougall Diana Duarte Steve Punt Dan Ackerson Rebecca White Tom Goldtooth Catherine Quaid Lynn Doan Ralf Fuecks Alfie Hamid Dan Pallotta Anthony Chang Dr. Rebecca Boudreaux Gerhard Wannemarcher Katherine Wilkinson Kayne Darrell Phil Lane Chris Field John Delaney Eric Sanderson Jennifer Allen Grace Weikert Dr. Tami Simard Jerry Honawa Joey Santore Zainab Salbi Stephan Lewandowsky Denis Duverne Akpezi Ogbuigwe Matthew Radcliff Juan Isuiza Pnia Aryn Bergman Dalila Adofo Kiana Frank Dr. Rachel Knox Robert Percival Mythili Menon LeRoy Patton Tomas Lamanauskas, Paul Raskin Jon Bougher Fiona Sampson Gregg Braden Debra Haaland Solomon Hsiang Sandrine Dixson-Declève David Ebsen Kerri Norris Ron Garan Evan Fraser Carrie Bishop Keith Harris Tamara Kennedy-Hill Craig Groeschel RAZZ James Braithwaite Tania Pulido Isabel Sebastian Dr. Lewis Mehl-Madrona John Grim Andrew Morlet Noa Gafni Steve Connell Janeen Comenote Greg Spencer Monica Chuji Gualinga Michael Kobori Linda Neale Stephanie Soechtig Kip Anderson Timothy Burroughs Julie Ishimwe Wilson Justin Nina Leopold Bradley Tony DeFazio Gabrielle Wong-Parodi JoAnne Bresnan Pastor E.D. Mondaine´ Cara PAAGe Irving Wladawsky-Berger, Ph.D. Larry Merculieff David Gruber Maria Mendiluce Elizabeth Durant John Prendergast Prakash Lashawn Sarah Milner Lily Yeh Deirdre Kent Ross Moster Adam Werbach Amanda Frye Shaun MacGillivray Adam Reed Alexis Krivkovich Melanie Billings-Yun Billings-Yun Amelia Southern-Uribe Trevor Hill Bob King Danny Kennedy Brian Libby David Helvarg Supriya Verma Elijah Furquan Sir Ken Robinson Arjuna Ardagh Frank Morton Rulen Tangen Robert Dr. Bullard Jill Savery Father Charles Moore Stephanie Moore Bill Gates Lynn Scarlett John Morrison Angaangaq Angakkorsuaq Chief Arvol Looking Horse Adrian Grenier Leif Wenar Wallace Black Elk