Lactose intolerant? You'd be surprised how many people are

Ingenious is a new podcast from Waipapa Taumata Rau, University of Auckland. In each episode we take a deep dive and talk to researchers about work that is transforming our world for the better. In this episode, how a 5000-year-old genetic mutation enabled some of us to digest milk with no problem. What does that mean for the rest of us?