Manage episode 202874773 series 1420094
Guests: Dr. Gary Brierley (aka Dr. Mole), tunnel engineer, Dr. Miquel Salmeron, physicist at Lawrence Berkeley National Laboratory, Special thanks to callers Nikki and Erin.
Check out the Terrifying Tunnel Video referenced in today's show.
74 episodes available. A new episode about every 10 days averaging 25 mins duration .