Co-Founder and President, KoBold Metals

Co-Host, "Katie Couric Podcast'

Actor, Company Manager, Digital Producer, Theater of War Productions

Professor Emeritus, International Relations, American University; Research Scholar, University of Massachusetts, Amherst; Co-Author, A Bright Future

President, United States Program, Bill & Melinda Gates Foundation

Teen Changemaker; Climate-Resilience and Youth-Empowerment Advocate

Dean and Doyle Rogers Distinguished Professor of Law, Belmont University College of Law; Former U.S. Attorney General

U.S. Representative (R-TX)

US Representative (R), 16th Congressional District, Ohio

Professor of Medicine, Albert Einstein College of Medicine; Academic Hospitalist, Montefiore Medical Center-Weiler Division

Contributing Editor, Rolling Stone; Author, “The Heat Will Kill You First”

Robert P. Gwinn Professor of Economics, Booth School of Business, University of Chicago; Former Chairman, Council of Economic Advisors, Obama White House

Drummer, Shimon Robot and Friends

John Zwaanstra Professor of International Studies and of Economics, Harvard University; Economic Counsellor and Director, Research Department, International Monetary Fund

Staff Writer, The New Yorker; Author, "The Real Work: On the Mystery of Mastery"

Chief Impact Officer, Participant