This week on gastropod, how did we get here? What is formula? Why do so many parents rely on it to feed their babies? And why do so few companies make it? On our way down the rabbit hole, we also explore what happened to babies before formula was invented. This episode we are telling the story of human milk, human milk substitutes and where we should go next. Subscribe to unexplainable for episodes every wednesday, starting june eighth, a subscribe now.