Alex Hunter

Former Head of Virgin Online, Angel Investor, Branding & Marketing Expert

Alex Laskey

Founder and Former President at OPOWER

Alexa Clay

Writer, Culture Hacker, Innovation Strategist & Co-Author of "The Misfit Economy"

Alexander Tsiaras

Editor-in-Chief and Founder/CEO, TheVisualMD.com

Alexia Tsotsis

Former Co-Editor, TechCrunch; Founder of Dream Team

Alexis Madrigal

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

Alf Rehn

Author, Speaker & Professor of Innovation, Design, and Management at the University of Southern Denmark

Alfred Poor

Health Tech Futurist & Writer

Alfred Poor, The Health Tech Futurist

Alison Moore

CEO, Comic Relief US

Alison Sander

Director, Boston Consulting Group's Center for Sensing & Mining the Future

Aliza Licht

Founder & President of LEAVE YOUR MARK LLC; Author, Consultant & Podcaster

Allan Karl

World Traveler and Author of "The Beginning at the End of the Road"

Allen Olivo

Acting CMO for PayPal; Former Vice President, Global Brand Marketing for Yahoo!

Allen Sinai, PhD

Chief Global Economist, Strategist, and President of Decision Economics, Inc.

Alpana Singh

Restaurateur, Master Sommelier, TV Host & Author

Amanda Bennett

Executive Editor, Bloomberg News Author, "The Cost of Hope"

Amanda Drury

Co-anchor of CNBC's "Street Signs"

Amanda Lang

Business Journalist at BNN Bloomberg

Amanda Palmer

Musician, New York Times Best Selling Author, Performer and Provocateur

Amanda Steinberg

Social Entrepreneur & Chief Revenue Officer at Revolution Messaging