We rarely give a second thought to adding a splash of milk to our morning coffee or cereal, but for most of human history, drinking another species’ milk was unusual. Humans couldn’t easily digest animal milk, and species that could reliably supply it were undomesticated. So when — and why — did that change? Credit: © Heritage Images—Hulton Archive/Getty Images  You Can’t Milk a Wild Cow Researchers agree that pinpointing the exact time and place humans began drinking cow’s milk is difficult, but there are some clear milestones. Around 10,000 BCE, humans in the hilly landscapes ...Read More