Podcast:TechNation Radio Podcast Published On: Thu Jul 03 2014 Description: On this week's Tech Nation, Moira speaks withWALTER ISAACSON, with his biography of Steve Jobs, and on BioTech Nation, new approaches to cancer, placing human DNA in fruitflies to study Alzheimer's and Parkinsons, and on BioIssue of the Week with David Ewing Duncan, a salute to a recently-passed Nobel Laureate.