Episode 22-49 Your distant cousins and their DNA

On this week’s Tech Nation, Moira speaks with Pulitzer Prize-winning author, Ed Humes. His latest is “The Forever Witness … How DNA and Genealogy Solved a Cold Case Double Murder.” We get an object lesson in the Three Ages of DNA, and while it reads like a fast-paced Cold Case on steroids – it provides details no fiction writer would dare to make up, like the unexpected involvement of the famous true crimes writer, Ann Rule, and a person whose DNA skills are familiar to fans of the PBS documentary series, “Finding your roots with Henry Louis Gates, Jr.”