Michael SladeSelf - Friend, Co-Founder, Second Avenue Partners (2 ep.) Anthony FauciSelf - Distinguished University Professor, Georgetown University (2 ep.) Lady GagaSelf - Artist, Philanthropist and Businesswoman (1 ep.) Kevin RooseSelf - Tech Columnist, The New York Times (1 ep.) Jeff HancockSelf - Professor of Communication, Stanford University (1 ep.) Fei-Fei LiSelf - Co-Director, Stanford Institute for Human-Centered AI (1 ep.) Nitasha TikuSelf - Tech Reporter, The Washington Post (1 ep.) Tim UrbanSelf - Author, "Wait Buy Why" (1 ep.) Sal KhanSelf - Founder and CEO, Khan Academy (1 ep.) Lecia SequistSelf - Lung Cancer Oncologist, Mass. General Cancer Center (1 ep.) Sam AltmanSelf - Founder and CEO, OpenAI (archive footage) (1 ep.) Elise WangSelf - Conspiracy Theory Historian (1 ep.) Danah BoydSelf - Founder, Data and Society (1 ep.) Andrew CookSelf - Managing Director, Gates Ventures (1 ep.) Renée DiRestaSelf - Research Manager, Stanford Internet Observatory (1 ep.) Alex StamosSelf - Founding Director, Stanford Internet Observatory (1 ep.) Eric TooneSelf - Managing Partner, Ventures, Breakthrough Energy (1 ep.) Rodi GuideroSelf - Executive Director, Breakthrough Energy (1 ep.) Aliya HaqSelf - VP, U.S. Policy and Avocacy, Breakthrough Energy (1 ep.) Emma BrightSelf - Head of Production Design Engineering, Mill (1 ep.) Matthew DesmondSelf - Author and Sociology Professor, Princeton University (1 ep.) Robert ReichSelf - Former U.S. Secretary of Labor, Co-Founder, Inequality Media (1 ep.) Rutger BregmanSelf - Historian and Author, "Utopia for Realists" and "Humankind" (1 ep.) Mark CubanSelf - Co-Founder, Cost Plus Drugs (1 ep.) Nataki RhodesSelf - National Organizer, One Fair Wage & Restaurant Industry Veteran (1 ep.) Connor MaxwellSelf - U.S. Economic Mobility and Opportunity Program Officer, Gates Foundation (1 ep.) Ryan RippelSelf - Director, Economic Mobility & Opportunity, Gates Foundation (1 ep.) Andrea ElliottSelf - Investigative Reporter, The New York Times (1 ep.) Jelani CobbSelf - Dean and Professor of Journalism, Columbia Journalism School (1 ep.) Rae PilarskiSelf - Associate Program Director, Code for America (1 ep.) Hari MenonSelf - South and Southeast Asia Director, Gates Foundation (1 ep.) Madhu KrishnaSelf - Deputy Director, Gender Equality, Gates Foundation (1 ep.) Timothy C. WinegardSelf - Author, "The Mosquito: A Human History of Our Deadliest Predator" (1 ep.) Jennifer GardySelf - Deputy Director, Surveillance, Data, and Epidemiology, Gates Foundation (1 ep.) BonoSelf - Musician and Activist (1 ep.) Robert SederSelf - Chief, Cellular Immunology Section, Vaccine Research Center, NIAID, NIH (1 ep.) Laura SteinhardtSelf - Epidemiologist, Centers for Disease Control and Prevention (1 ep.) Titus K KwambaiSelf - Co-Principal Investigator, Centers for Disease Control and Prevention (1 ep.) Helen JametSelf - Deputy Director, Vector Control, Gates Foundation (1 ep.) Kevin EsveltSelf - MIT, Inventor of CRISPR Gene Drive (1 ep.) Traore Sy SoumaloSelf - Lead of the Village Committee, Souroukoudinga Village (1 ep.)