If you can potty-train a child, you can potty-train a cow. At least, that was the theory a group of researchers in Germany decided to test, in a bid to find a solution to the environmental damage caused by livestock waste.
원문출처 : https://www.cnn.com/2021/09/13/europe/toilet-training-cows-climate-crisis-study-intl-scli-scn/index.html
원문출처 : https://www.cnn.com/2021/09/13/europe/toilet-training-cows-climate-crisis-study-intl-scli-scn/index.html