On this week’s Tech Nation, Moira speaks with New York Times best selling author and National Magazine Award winning journalist SUSAN CASEY about her book “VOICES IN THE OCEAN: A Journey into the Wild and Haunting World of Dolphins.” Their brains are mightily impressive when compared with a human’s.

Than on BioTech Nation we talk about two human disease conditions that biotech is seeking to improve. First we talk to JOHN MCDONOUGH, CEO of T2 Biosystems about a quicker test to detect an overgrowth of candida. We can effectively treat this potentially fatal condition, but only if we know that's what's happening.

Then we speak to Steve Mento, CEO of Conatus Pharmaceuticals, about an emergent treatment for cirrhosis of the liver, no matter what the cause. There is little treatment available for repairing the liver. We'll talk about how your liver changes with long-term damage, what Conatus is doing in this area, the challenge of proving scientifically that a treatment is working, and how a new test might result that will monitor your liver health.