In 1900, the average dairy cow in America produced 424 gallons of milk each year. By 2000, that figure had more than quadrupled, to 2,116 gallons. In this episode of Gastropod, we explore the incredible science that transformed the American cow into a milk machine\u2014but we also uncover the disturbing history of prejudice and animal cruelty that accompanied it.\n\nAlong the way, we\u2019ll introduce you to the insane logic of the Lifetime Cheese Merit algorithm and the surreal bull trials of the 1920s. This is the untold story behind that most wholesome and quotidian of beverages: milk. Prepare to be horrified and amazed in equal measure.\nLearn more about your ad choices. Visit podcastchoices.com/adchoices