Imagine the world 430,000 years ago. What were our ancestors like? What if there was a population of people that no one ever knew about? Can we unravel the mystery of our history? Now imagine, your garden at home is full of aphids. Did you go buy some ladybugs at your local home depot? Have you ever thought where those ladybugs came from or what happens after they leave? Now these two situations may seem very different but they have one common theme. They both have questions that can be studied using population genomics. This week on RadioBio we talk about popgen, ancient humans, ladybugs and ghost populations (ooo spooky!) with Dr. Arun Sethuraman, an assistant professor at San Diego State University.