Aaron David Miller

Senior Fellow, Carnegie Endowment for International Peace

Achenyo Idachaba

Head of MitiMeth, A Nigeria-Based Environmentally Aware Production Company

Adam Ostrow

Chief Digital Officer, TEGNA

Adam Posen

President of the Peterson Institute for International Economics

Adewale Troutman, MD, MPH, MA, CPH

President, American Public Health Association (APHA); Director, Public Health Leadership & Practice at University of South Florida

Admiral Michael Mullen

Chairman, Joint Chiefs of Staff (2007-2011)

Admiral Ray Smith

Rear Admiral, US Navy (Ret.), Navy SEAL Commander, Leadership & Peak Performance Expert

Adnan Nawaz

News Anchor for BBC World

Ai-jen Poo

Co-founder of National Domestic Workers Alliance; Director of Caring Across Generations, Co-founder of Supermajority

Ajay Gupta

Creator and Host of Technology Today; Cyber security, IT strategy and Their Implications on Business, Global Business and Strategy

Alan Gregerman

Humorous Authority on Strategy, Innovation and Success

Alan Siegel

Founder and Chairman Emeritus, Siegel+Gale and Champion for Simplicity

Alastair Campbell

Consultant; Strategist; Communicator; Campaigner; Best-Selling Author; Former Director of Strategy & Communications to Tony Blair

Alberto Gonzales

Former Attorney General of the United States

Alberto Ruis-Gallardon

Spanish Politician; Former Spanish Minister of Justice; Former Mayor of Madrid

Alejandra Schrader

Award-Winning Author, Plant-Based Nutrition Certified Chef, Food TV Personality & Activist

Alek Wek

Alek Wek, African Model who graced the cover of Elle MAgazine in November 1997

Alexis Madrigal

Senior Editor at The Atlantic & Author of "Powering the Dream: The History and Promise of Green Technology"

Alfred Poor

Health Tech Futurist & Writer

Alfred Poor, The Health Tech Futurist

Alison Gopnik

Professor & World Leader in Children's Learning and Development