Larry King talks to astronaut Scott Kelly in space!
Neil deGrasse Tyson
Changing Stigmas About Ghosts: John Zaffis from Syfy's "Haunted Collector"
Religious And Scientific Belief In the Afterlife: Josh Gates From SyFy's "Stranded"
LeVar Burton & Bill Nye "TV's greatest teachers"
3D Printing And It's Potential To Change The World
Mr. Science Himself, Neil deGrasse Tyson, Talks Global Warming, Death, and Elon Musk