Even though we live in a modern world how we act and what we do many times is controlled by our Stone Age brain. This impacts our diet, friendships, love and more. Dr. Biology sits down with authors Doug Kenrick and David Lundberg-Kenrick to get the inside story on their book - Solving Modern Problems with a Stone Age, Brain, Human Evolution and the Seven Fundamental Motives. This lively conversation can help you wrap your Stone Age brain around the challenges we face today and give you some solutions as you navigate our modern world.