The majority of humans become lactose intolerant as they grow up. Learn how ancient herders changed our digestive gene pool in this episode of BrainStuff, based on this article: https://health.howstuffworks.com/wellness/food-nutrition/facts/humans-built-drink-milk-adults.htm

BrainStuff Classics: How Are Ethnicity and Race Different?
09:41

How Does Butter Get Its Texture, Flavor, and Color?
14:02

Why Do We Call Dibs and Shotgun, and Who Was the Real McCoy?
09:22