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Miles Reiter Drs. Jesse Popp Dara O'Rourke Anita Sanchez Kelllie Berns Amanda Marshall William McDonough Clayton Thomas-Muller Sir David King Gregory Kallenberg Alicia Cahuiya Jeannette Armstrong Emmet Brady Jerome Osentowski Kassie Bracken Soundar Rajan Tara Wilkins Ivey Cone Naima Penniman Dr. Anthony Cortese Gillian Millar Sean Robbins Judith Rodin Rae Wynn-Grant Hrabba Gunnarsdottir Brandon Mazur Lidy Nacpil Dr. Suzanne Simard Grandmother Agnes Baker Pilgrim Bill Bryson Robert Percival Thomas DiNapoli Ivan Oransky Austin Picinich Mariann Bassey Orovwuje Emma Cott Amy Domini Andrew St. Ledger Donald Blair Nancy Kraushaar Antonia Juhasz Ian Kibbe John Woo Tom 'Putuparri' Lawford Barbara Turley-McIntyre Tom Carpenter Geoff Mulgan Bella Azbug Juvenal Alvarez Eliza Gilkyson Kim Tekwitha Spencer Roman Krznaric Manu Eveno Jessica Guynn Jennifer Francis Guilherme Albieri Edward Burtynsky Sequoyah Trueblood Sofia Joanes Franklin Hill Brian Mullis Radics Dr. Kornelia, Paul Gilding Lorie Wigle John Prendergast Alexandros Washburn Ann E Burg Arvind Ganesan Fernando Holguin Karen Litfin Ken Blanchard Dwayne Johnson Alessia Magliarditi Segun Adefilia Grace Weikert David Okimoto Satish Kumar Patricia Gualinga Montalvo Sofie Maddens Wright Lassiter III Sabine Amend Steve Mouzon