If you go to the store in search of milk, there are a dizzying number of products to choose from. There’s dairy milk, but also plant-based products such as almond, soy, and oat milks. So which milk is actually best for you? And which uses the fewest resources and produces the least pollution? Jonathan J. O’Sullivan and Grace E. Cunningham dive into some of the most popular milks to find out. Lesson by Jonathan J. O’Sullivan and Grace E. Cunningham, directed by Anton Bogaty.