Tara Ruttley

Chief Scientist at Blue Origin; Former NASA Scientist & Aquanaut

Dr Tara Ruttley - A Career in Space

Ashley Dove-Jay

Crew Commander of Mars analog astronauts expedition, aerospace engineer (PhD), 3x TEDx speaker, prolific pop-sci writer, space columnist

Dr. Dennis Bray

Professor Emeritus at the Department of Physiology, Development and Neuroscience, University of Cambridge

Edward Tufte

Professor Emeritus of Political Science, Statistics, and Computer Science

Kathy Giusti

Founder of the Multiple Myeloma Research Foundation, Founding Co-Chair of the HBS Precision Medicine Accelerator; Author of "Fatal to Fearless: 12 Steps to Beating Cancer in a Broken Medical System"

How Kathy Giusti & MMRF changed the entire disease-fighting system

Dr. Barbara Fredrickson

Leading Researcher on Positive Emotions & How Cultivating Positivity can Change our Relationships, our Cells, and our Outlook on Life

Louis-Philippe Loncke

European Adventurer 2016, Explorer, Motivational Speaker, Entrepreneur, Management Consultant

Dr. Hendrik Poinar

Evolutionary Biologist Specializing in Ancient DNA

Marla Spivak

Entomologist; Focused on Practical Applications to Protect Honey Bee Populations

Hannah Fry

Complexity Theorist & Author of "The Mathematics of Love"

Jennifer Healey

Senior Research Scientist, Intel Labs

David Moinina Sengeh

Minister Of Basic and Senior Secondary Education & Chief Innovation Officer for the Government of Sierra Leone

Peter Girguis

Associate Professor of Natural Sciences at Harvard; Adjunct Research Engineer at the Monterey Bay Aquarium Research Institute

Yuri Oganessian

Russian nuclear physicist of Armenian descent. He and his team discovered the heaviest elements in the periodic table

Bernd Würsig

Biologist; Regents Professor at Texas A&M University at Galveston

Steve Winter

Wildlife Photojournalist

Jon Waterhouse

Explorer at National Geographic Society

Anand Varma

Natural History Photographer

Johan Reinhard

Anthropologist

Mireya Mayor

Primatologist, Wildlife Conservation Advocate, Author & TV Host