Whoopi Goldberg
Mayim Bialik
Man on Wire
Time Travel
Brian Greene
Robert Kirkman and The Walking Dead
Jeremy Irons
The Martian
Ben Stiller
Buzz Aldrin
Terry Crews
Jay Leno
William Shatner
US Secretary of Defense Ash Carter
Hope Solo
Search for Aliens
The Science of Weather
Science of Game of Thrones
Herbie Hancock and Wayne Shorter
Bill Maher
