Paul Snelgrove

Paul Snelgrove led the group that pulled together the findings of the Census of Marine Life -- synthesizing 10 years and 540 expeditions into a book of wonders.

Peter Girguis

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

Cady Coleman

Former NASA Astronaut; Retired U.S. Air Force Officer & Chemist

John Holdren

Professor of Environmental Policy & Director of the Program on Science, Technology, and Public Policy at the Harvard Kennedy School of Government

Bart Knols

Scientist, Author, Entrepreneur

Ginger Zee

Chief Meteorologist for ABC News, Author & Mental Health Advocate

Chasing Helicity: Through the Storm (The Chasing Helicity Series) (Chasing Helicity Ser...

Michael Archer

Paleontologist Michael Archer is working to bring back his favorite extinct animal: the Tasmanian tiger.

Dr. Hendrik Poinar

Evolutionary Biologist Specializing in Ancient DNA

Dr. Phil Plait

Blogger for Discover Magazine at Bad Astronomy, where he deconstructs misconceptions and explores the wonder of the Universe.

Molly Crockett

Globetrotting Neuroscientist investigating altruism, morality and economic decision-making.

Ellen Stofan

Under Secretary for Science & Research at the Smithsonian; Former Chief Scientist at NASA

Fiorenzo Omenetto

Professor of Biomedical Engineering; Physicist

Eric Berlow

Data Ecologist, Complexity Scientist

Garrett Reisman

Astronaut, Professor of Astronautical Engineering at USC & Senior Advisor at SpaceX

Jill Tarter

Astronomer & Bernard M. Oliver Chair for SETI Research at the SETI Institute; Recognized for Work on Extraterrestrial Intelligence

Pamela Melroy

Retired Air Force Officer & Former NASA Astronaut

From Star Trek Posters to NASA: The Journey of Pamela Melroy '83

Anil Ananthaswamy

Award-Winning Science Writer & Author of "The Edge of Physics"

Susan G. Finley

Longest-Serving Woman in NASA, Employee of NASA's Jet Propulsion Laboratory (JPL)

Dr. Kirby Runyon

Space Exploration Leader & Zero Gravity Coach and Planetary Geologist, CEO of Planex.space

The Overview Effect at Home: Exploring Otherworldly Terrain With Space Tourists on Earth

Andrew Connolly

Astronomer