George Soros
2004 Speaker Chairman, Open Society Foundations
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Gerardo Ceballos
2020 Speaker Executive Director, Stop Extinction
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Giannina Segnini
2019 Speaker Director, Masters of Science Data Journalism Program, Columbia University
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Gina Barbieri
2023 Speaker
Expert, Accountability Systems and Practice (served as inaugural Ombudsperson for WWF International/Principal Specialist, CAO, World Bank Group)
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Glen Galaich
2022 Speaker
CEO, Stupski Foundation
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Gloria Duffy
2023 Speaker
President & CEO, Commonwealth Club of California
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Govindraj Ethiraj
2019 Speaker Founder, IndiaSpend, BOOM, FactChecker
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Graça Machel
2003 Speaker Chairperson, Graça Machel Trust
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Greg Asbed
2018 Speaker Co-founder, Fair Food Program
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Greg Dalton
2023 Speaker
Founder and Host, Climate One
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Gro Brundtland
2014 Speaker 22nd Prime Minister of Norway
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Gunjan Veda
2023 Speaker
Director, Collaborative Research, Policy and Practice, The Movement for Community-led Development
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Hakeem Belo-Osagie
2014 Speaker Board Chairman, Emerging Markets Telecommunications Services, Ltd.
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Hal Harvey
2010, 2020 Speaker CEO, Energy Innovation
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HE Toyin Saraki
2013, 2014, 2015 Speaker Founder and President, The WellBeing Foundation
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Heather Grady
2018 Speaker Vice President, Rockefeller Philanthropy Advisors
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Heather McGray
2020 Speaker Director, Climate Justice Resilience Fund
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Helene D. Gayle
2009 Speaker President & CEO, CARE USA
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Henrietta Fore
2021 Speaker
Executive Director, UNICEF
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Her Majesty Queen Rania Al Abdullah
2009 Speaker Queen of Jordan
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Hernando de Soto
2003 Speaker Founder and President, Institute for Liberty and Democracy, Peru
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Hilary Pennington
2022 Speaker
Executive Vice President of Global Programs, Ford Foundation
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Hillary Rodham Clinton
2009 Speaker Secretary of State, 67th Secretary of State of the United States
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Hindou Oumarou Ibrahim
2020 Speaker President, Association for Indigenous Women and Peoples of Chad
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His Highness the Aga Khan
2007 Speaker Founder and Chairman, Aga Khan Development Network
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Ian David Moss
2023 Speaker
Executive Director, Effective Institutions Project
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Iara Peng
2022 Speaker
Founder and CEO, JustFund
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Ira Magaziner
2007 Speaker Chairman, William J. Clinton Foundation
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Isabelle Kamariza
2022 Speaker Founder and President, Solid' Africa
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Isha Clarke
2020 Speaker Co-Founder, Youth vs Apocalypse
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