Clint Borgen

Founder & President of The Borgen Project

Colin Angle

Chairman, CEO & Founder of iRobot

Colin Shaw

Customer Experience Thought Leader, CEO of Beyond Philosophy CX Consultancy, Author & Podcast Host

Cookie Johnson

Philanthropist, Entrepreneur & Women's Health Advocate

Craig and Marc Kielburger

Social Entrepreneurs, Humanitarians &Co-Founders of Free the Children and Me to We

Dalia Mogahed

President and CEO, Mogahed Consulting, LLC; Author, "Who Speaks for Islam?"

Dan Dunn

Performance Painter

Dan Lyons

Author of "Disrupted: My Misadventure in the Start-Up Bubble"

Daniel Dennett

Professor of Philosophy at Tufts University

Daniel Kish

President of World Access for the Blind & Expert in Human Echolocation

Daniel Levine

Leading Expert on Consumer Trends

Daniel Spulber

Elinor Hobbs Distinguished Professor of International Business and Professor of Strategy at the Kellogg School of Management

Dave Gray

Author, "The Connected Company"

David Aaker

Vice-Chairman of Prophet, Professor Emeritus, UC Berkeley & Author of "Brand Relevance: Making Competitors Irrelevant"

David Beebe

CEO of Beebe Content & Emmy Award-Winning Producer

David Bornstein

Author, Fixes column in The New York Times and Founder, Solutions Journalism Network

David Burkus

Best-Selling Author & Organizational Psychologist

A Simple Way to Inspire Your Team | David Burkus | TED

David Christian

David Christian teaches an ambitious world history course that tells the tale of the entire universe -- from the Big Bang 13 billion years ago to present day.

David Pottruck

Repeat Best-Selling Author and Former CEO of Charles Schwab

David de Rothschild

Environmentalist, Adventurer & Founder of Sculpt the Future Foundation