On this week's BioTech Nation, Moira speaks with Dr. Mitch Prinstein, a professor of psychology and neuroscience at the University of North Carolina, Chapel Hill. There's a science to being popular and a proven path to likability. Then on Tech Nation Health, Chief Correspondent Dr Daniel Kraft brings 3D printing into healthcare. Theres a lot of value there, far more than printing cute little widgets just for fun. And Dr. Serge Saxonov, CEO of 10x Genomics, explains how our current technology for decoding our genomes has its limits, and how to can be improved upon.