Tierney Thys is a marine biologist and science educator. She studies the behavior of the Mola mola, or giant ocean sunfish -- and works with other scientists to make films that share the wonders they see.
Harvard Medical School psychologist Susan David studies emotional agility: the psychology of how we can use emotion to bring forward our best selves in all aspects of how we love, live, parent and lead.
Katharine Wilkinson is transforming how we see and relate to the earth. As a writer and messenger, she brings humanity and heart to the challenge of climate change and invites us to be awake, aware and active participants in the community of life.
Dr. Steven Schwaitzberg is on a mission to teach surgeons around the world to perform minimally invasive surgery. But first, he's had to find the right technology to allow communication across the language barrier.
Peter Diamandis runs the X Prize Foundation, which offers large cash incentive prizes to inventors who can solve grand challenges like space flight, low-cost mobile medical diagnostics and oil spill cleanup. He is the chair of Singularity University, which teaches executives and grad students about exponentially growing technologies.