David Stevens Smokey Bear Casey Camp Horinek Yuko Okamaura Jonathan Rose Mai’a Cross Amit Goswami Gene Baur Jim Yong Kim Polly Courtice Bernhard Th.W. Kaisiep MS Monica Oudang Jen Henry Doug Miller Carly Vynne David Letterman Dame Ellen MacArthur Ann Pacey Segun Adefilia Stella Young Kirsti Luke Madeline Janis James O''Dea Henrik Madson Kate Dineen Tom Hallat Mary Robinson Lynn Doan Prince Osisiadan Dr. Jim Kim Jacques Cluzaud Ashok Gangadean Jenny Adler Diane Griffen Brad Allgood Faith Lumonya Jessica Alba Joel Beauvais Richard Gillies Lucas Zellers Dr. Svetlana Chernikova Jay Stuart Tara Sheahan Fany Kuiru Castro Iasabelle Mashtola Shan Ya Dr. Robert Bullard Didier Lacaze Joseph Roberts Richard White Matt Briggs Ian MacKenzie Adam Reed Greg Dalton Annie Brett Kirstofor Lofgren Sandrine Dixson-Declève Kip Anderson Dr. Amiera Sawas John Sterman Kelly Matheson David Grayson Paul Morrell Lil Milagro Henriquez Katrin Peters Judith Orloff MD U. 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Jesse Popp Bryan Stevensen Jeff Masters Emil Björnson​ Damien O'Brien Miriam Turner Matthew Kiernan Craig Santos Perez Jonathan Healy Mary Mazzoni Dalila Adofo Elizabeth Baker Steve Smith Dave Pollard Laura Turner Seydel Tom Bridgeman Opal Tometi Eero Paloheimo Jack Scalo Charolotte Relyea Barbara Finamore Pierre Paslier llarion Merculieff Michael Mansfield Michael O'Goill Julián Castro Dr. David Suzuki Glynda Carr Hioki Doryu John Médaille Mark Owen Sir Ken Robinson Rory Sutherland Jackie Savitz Angela Garcia Christopher Leinberger Duncan Stewart Mark Lakeman Mohammed Bouhrja Julie Ishimwe Isha Clarke Guujaaw Will MacAskill Anthony Chang Jocelyn Bleriot David Courchene Vint Cerf Enric Sala Michele Rozbitsky Sônia Bone Guajajara John Rausch Stephen Lamoreaux Louie Schwartzberg Wilson Justin Reno Keoni Franklin Mark Plotkin Fr. Greg Boyle David Gruber Eric Sanderson Josh Fox Lois Gibbs Nan Roman Roberta Conner Gil Friend Suzanne Simard Kiley Yuthas Dave Couchene Jerome Osentowski Renee Lertzman Cara Romero Miguel Santistevan Bob King Ryland King Miki’ala Catalfano Richard Jackson Andrew Revkin Doug Allan Barbara Turley-McIntyre Kathryn Mersmann Kiana Frank Laura Golino de Lovato Greg "Biskakone" Johnson Kevin McBride David Hall, Ph.D. Ben Cook Pierre-Francios Thaler JoAnne Bresnan Diego Zaverucha Carl Safina Crista Gardner Concita Sõpré Roz Savage Jessica Morey Lynn Scarlett Kandi Mossett Greg Spencer Winona LaDuke Arlene Blackdeer Riane Eisler Barry Silverthorne Nancy Foye-Cox Valerie Suberg Angelique Cofield Alex Steffen Stephen Hawking Amelia Southern-Uribe Michael Spence Trevor Manuel Célia Xakriabá Dr Cathy Fitzgerald Severn Cullis-Suzuki Christian Vanizette Stanislaw Michel Paul Cienfuegos Mari Margil Hayley Gryc Dave Weil Amanda Gorman Linda Black Elk Lukas Korver Erold Naomab Alexis Krivkovich Dr. Lewis Mehl-Madrona Robert Frank Reniera O'Donnell Robert Padavick Nafeez Ahmed George Crombie Tim Jackson  Laura Cook Lily Yeh Raz Mason Henry Taylor Patrick McDowell Madame Gro Harlem Brundtland President Jimmy Carter Jaime Latorre Gita Sen Alan Evan Simon Sidello Kirby Dyess Baroness O'Neill Chuck Fox Sharif Abdullah Chief Phil Lane Megan Kemple Globa Ushigua Michael A. Wood Michael Walwath Stacy Mitchell Sikowis Nobiss Rosa Canalos Joanna Macy David Orr Hereditary Chief Stephen Augustine Dusty Gedge Lewis Mehl-Madrona, MD Sheldon Whitehouse Mayan elder Flordemayo Cat Brooks Jonathon Porritt Eriel Deranger Jeff Greenwald Jeff Seabright Jane McMullen Linda Dr. Rudolph Twilight Greenaway Graham Townsley Gary Lawrence Anthony Kleanthouse Killian Noe Stanley Kabala A. Michael Spence Leslie Johnston Mike Bresnan Paul Gilding Kirsten Frandsen Sarajoy Pond Radics Dr. Kornelia, Vibeka Mair David Korten Paul Collier Robert Bullard Leila Salazar-López Jo Simpson Andrew Zolli Mogens Lykketoft Serene Jones Anndrea Hermann Lukas Korve Trevor Tejeda-Gervais Michael Liebreich Edward Norton Zukiswa White White dipti bhatnagar Suma Peesapati Rick Siewert Noelene Nabulivou Omodolapo Barakat Babtunde Steve Loe Bill Ford Sugata Ray Anna Lappe Isabel Hoffmann Charles Montgomery Andrew Nikiforuk Christine Dorchak Helen Caldicott Greta Thunberg Wilma Mankiller Elder Dr. Dave Courchene Dr. Cosmas Luckyson Zavazava Mathew Pavone Lisa Rucker Molly Brown Tall Paul Jeremy Leggett John Grim Jay Walljasper Lennard Fisk, Ph.D Danny Desjarlais Kevin Danaher Catherine Gund Michael Elliot Paul Steinbroner Amanda Marshall Grace Eagle Reed Shaoshan Liu Robert Adams Jade Begay Ali Meders-Knight Tony Stroebel Genevieve Nelson Danat Tekie Katherine Hamilton Gershon Cohen, Ph.D. Aja Conrad Steven Collins, PhD Rand Chatterjee Angie Tangaere Jamie Billet Linda Neale Tokyo Rose Band Bob Stacey Raj Patel Jensine Larsen Andy Kimm Asa Miller Isabel Allende Jeffrey Sachs Ashley Young Richard Wilkinson Klaus Jacob Michael Ellick Jerry Levitan Janine Benyus Rev. Tara Wilkens Klelia Guerrero García Isabel Sebastian N. Scott Momaday Shreya Chaudhuri Puyr Tembé Sandra Steingraber Dirk Giannini Oscar Soria Bernice Sadler Jens-Christian Stougaard Arno Harris Guido Wallraven David Guggenheim, Ph.D. Segunda Velasquez Valentin Lopez Per Klevnäs William Rees David Word Grant Murphy Amy Peradotta Desari Strader Don Cameron Bruce Poon Tip Jennifer Baichwal Curt Lindberg James Hansen Deepa Senapath Ronda Carnegie Janice Taylor Pluma Bárbara Moreno Torres Joanne Crawford Jon Cooksey Adenike Titilope Oladosu Laura Weidman- Powers Dan Haggerty Steven Gorelick Ron Corn Jr.'s Amy Goodman Wallace Black Elk Henry Fontain Jason Box Ruth Å�chav’aya K’isen Miller Trenton Allen Elizabeth Durant Guy Dauncey Dan Pallotta Mansfield Frazier Leah Kelly David Attenborough Patricia Cooper Dr. Anthony Cortese Angaangaq Angakkorsuaq  Janene Yazzie Chris Anderson Michael M. Crow Baltasar Garz Katheryn Fernholz Björn Stigson Will Steffen Marc Amuthi Josephy Frank White Adam Palmer Andrew Miners Bill Clinton Sofia Joanes Liz Hansen Samir Chowdhury Dr. Renee Lertzman Diane Griffin Vandana Shiva Ortensia Lopez Mérouane Debbah Clara Vondrich António Guterres Bob Trench Harriet Tregoning Katharine Hayhoe Carolyn Fairless Lidy Nacpil Irving Wladawsky-Berger, Ph.D. President Bill Clinton Naima Penniman Anna Michalak Alex Epstein Liz Miller Alec Loorz Christine Schuler Deschryve Nalleli Cobo Christoph Lueneburger John Stednick Roman Krznaric Renee Ward David Pilat Harry Greenfield Teena Pugliese Elder Dr. Dave Courchene, Jr Alexandros Washburn Dr. Robin Wall Kimmerer Matthew Mehalick Costas Christ Rachel Carson Laura Day Rivero Kerri Norris Tom 'Putuparri' Lawford Steven Swig Chris Hayes