Dr. John Lindo of Emory talks about ancient DNA -- how it works, what you can understand from it, and why it's important. He explains how he's using ancient DNA to understand the biological diversity of pre-contact indigenous groups in the Americas. Find links to articles, books, and pics at AnthroBiology.com. Find the show on Instagram and Twitter @AnthroBiology. Email the host at gaby.lapera@anthrobiology.com.