SciTech Now - Season 2 Episode 23 Episode 223

We go inside the rapidly expanding aerospace industry; explore virtual reality as possible treatment for veterans with post-traumatic stress disorder; meet David Abraham, author of the book “The Elements of Power,” who joins Hari Sreenivasan to discuss rare metals and why we’ve come to rely on them; and look at Pando, one of the oldest and largest single organisms on the planet.