Manage episode 209707396 series 1134380
Leonard David discusses "Mars: Our Future on the Red Planet", the companion book to the six-part National Geographic Channel television series "Mars" executive produced by Brian Grazer and Ron Howard. More information on Leonard David can be found on his website http://www.leonarddavid.com/.
222 episodes available. A new episode about every 13 days averaging 11 mins duration .