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Frank Manriquez Nafeez Ahmed Glenn Hubbard Anthony Zolezzi Mary Anderson Barbara Campbell Bryan Stevensen Le Goaster Cat Brooks Robert Percival Ben Cook Joseph Stiglitz Wilma Mankiller Ethan Seltzer Grandmother Flordemayo Amish Jha, PhD Mary Christina Wood Robert Eccles Richard Wolff Greta Thunberg Mayor Kasim Reed Richard Hilt Richard Harding Gideon Rosenblatt Maria Campbell Jane Mayer Indy Siewert Jeffrey Hollender Karl-Henrik Robért Pluma Bárbara Moreno Torres David Sparks Joes Segal Amy Livingstone Jo Banner Rachel Carson Ian Robertson Kibb Kawenniiosta Jock Kirstofor Lofgren Raymond Loo Kat McDearis Rachel Botsman Enric Sala Reed Maxwel Anne Karpf Megan Smith Chelsea Rochman John Sterman Chairman Archambault Bill McKibben Douglas Worts Anne-Marie Slaughter Grandmother Beatrice Michael Walwath Michelle Thrush Eero Paloheimo Sally Gutierrez Rick Steves Juvenal Alvarez Mary Lou Burton Tom Kosnik Kirsten Frandsen Sai Selvarajan Lucimara Patté James Gifford Gretchen Bueermann Phil Lane Kristian Jensen Patricia Jenkinson Don Cheadle Yulia Shlychkova Dr. Amiera Sawas Ortensia Lopez Stephen Hawking Paul Begley Aubrey Streit Krug Deborah Cullinan Guy Dauncey Paul Dolan Kristen Leonard Emmary Elizondo Auden Schendler Diego Zaverucha Dr. Robin Wall Kimmerer Jeordy Clarke Amelia Southern-Uribe Michael Kobori Lindsey McCoy Huey Johnson Sir Ken Robinson Will Spears Andrew Weil, MD Richard Edwards Helen Caldicott Wangari Maathai Kwame Appiah Russell Gold Devi Aggriani LaDonna Brave Bull Allard Iris Magally Pretel Trejo Garth Lenz Joey Santore Walter Jetz Scott McKye Alexis Bunten Gabrielle Wong-Parodi Ben Depp Yann Arthus-Bertrand Lucy Wisdom Alex Cerussi Dolores Huerta John Page Chris Anderson Grace Eagle Reed Gabrielle Tayac Graham Townsley Margaret Kwateng Dr. Blair Stonechild Ben Oppenheimer Andrea Reid Adenike Titilope Oladosu Akpezi Ogbuigwe Marco Lambertini Jack Scalo Al Gore Hioki Doryu Janine Benyus Sarajoy Pond Carrie Halperi Elder Albert Marshall John D. Liu Wendy Van DIlla Jonathan F. P. Rose Anders Lendager Adam Lowry Sandra Postel Rebecca Solnit Victor Davila Ben Jealous Judith Orloff MD Robert Hockett President Bill Clinton Sophia de Sousa Yolanda Kakabadse Guenevere Millius Franco Tulio Viteri Gualanga Boyan Slat Ludovico Einaudi Kiana Frank Chrisopher F. Jones Simon Baron-Cohen Kirk Titus Dionne Foster Steve Cochran Prince of Wales Jane McMullen Laurence Kemball-Cook Sanne Knudsen Diana Wall Gerd Leonhard Nicole Vignola Tara Wilkins Chris Jordan Dr. Dan Wildcat Steve Russell Jamie Moffett Steven Collins, PhD Cindy Venho Mary Robinson Kate Dineen Tom Toles Dr. Thomas Keidel Guy Reid Jeff Speck Clayton Christensen Aileen Sullivan Dame Athene Donald Michael Montoya Severn Cullis-Suzuki Allison Leidner John Harper Nanci Wright Jim Richards Dr. Cecile Rousseaux Rev. Dr. Barbara Campbell Robert Dr. Bullard Tink Tinker David Guggenheim Sarah James Phillippe Cousteau, Jr. Gordon Westfall Dwayne Johnson Jeff Mendelsohn ​Laurene Allen Sean Patrick Farrell Suzanne Simard John Grim Trevor Hill Dianne Griffen John Robbins Sherman Alexie Kiley Yuthas John Prendergast John Cruden Renee Lertzman James McGreen Trenton Allen King Abdul Aziz Beth Simone Noveck Betsy Otto Robin Kimmerer, Ph.D. Dalila Adofo Yingling Liu Ryland King  Janene Yazzie Albert Bartlett Nico Larco Kevin Danaher Quynhanh Do John Wick Jacqueline Patterson Ted Williams John Trudell Valéry Lucas-Leclin Shreya Chaudhuri Mike Bresnan Jon Gertner David Orr Chris Rapley Meror Krayenhoff Howard Lack Jennifer Coombs Karen Seto Elisabetta Baronio Julian Brave Mary Evelyn Tucker Franklin Lasky Kathryn Lancaster Achim Steiner Iasabelle Mashtola Tom 'Putuparri' Lawford Kandi Mossett Tai Pelli Ervin Laszlo Mark SubbaRao Gary Eilerts JC Riggs Jessica Berry Matthew Mehalick Mary Nichols Tim Kasser Judy Kipenda Bill Bryson Costas Christ David Grayson Kenny Ausubel David Suzuki Adam Reed Hrabba Gunnarsdottir Chris McKnett Alicia Cahuiya Jonathan Jarvis Josh Axe John Lloyd Billy Jean King Sophie Kivlehan Linda Dr. Rudolph