Peter Diamandis

Chairman and CEO, X PRIZE Foundation; Author

Bold: How to Go Big, Create Wealth and Impact the World

Mitt Romney

Former Governor of Massachusetts, 2012 Republican Presidential Nominee and CEO

Ray Kurzweil

Chairman of Kurzweil Technologies; Inventor; Futurist

Transcend: Nine Steps to Living Well Forever

Neil deGrasse Tyson

Renowned Astrophysicist & Director of Hayden Planetarium and host of "Cosmos: A Spacetime Odyssey"

Ian Jukes

Educator & Technology Expert

Dr. Sylvia Washington

Chief Environmental Research Scientist at Environmental Health Research Associates, LLC.

Emily Calandrelli

Aerospace Engineer; Host & Producer of FOX's "Xploration Outer Space"

Ada Lace and the Suspicious Artist (An Ada Lace Adventure)

Grant Imahara

Electronics and Radio Control Expert; Former Host on Discovery's "Mythbusters," and Animatronics Engineer

Neil deGrasse Tyson Interviews Grant Imahara

David Gallo

Director of Special Projects, Woods Hole Oceanographic Institution

Dyan "The Penguin Lady" deNapoli

Penguin Expert, TED Speaker, & Award-Winning Author of "The Great Penguin Rescue"

The Great Penguin Rescue

Mae Jemison

First African American Woman in Space; Founder and President of Two Medical Technology Companies

Robin Chase

Founder and Former CEO, Zipcar, Buzzcar and GoLoco; Executive Chairman, Veniam Works; Author of "Peers Inc: How People and Platforms Are Inventing the Collaborative Economy and Reinventing Capitalism"

Shawn Achor

Harvard Researcher and Positive Psychology Expert

Sylvia Earle

Oceanographer, National Geographic Explorer-In-Residence & 2009 TED Prize Winner

Sea Change: A Message of the Oceans

Mayim Bialik

Neuroscientist & Star of "The Big Bang Theory"

Dr. Mayim Bialik 2011 Commencement Address - YouTube

Jennifer Doudna

Technology Co-Inventor, CRISPR- Cas9

Dr. Marion Nestle

Professor and Chair of the Department of Nutrition and Food Studies at New York University

David Eagleman

Neuroscientist; New York Times Bestselling Author; Direct the Laboratory for Perception and Action at the Baylor College of Medicine

Talks at GS – David Eagleman: The Neuroscience of Creativity ...

Jason Silva

Storyteller, Futurist, Keynote Speaker

David Pogue

Host of NOVA ScienceNow & Yahoo Tech Columnist