If you’re as fair-skinned as the average northern European, you only need about 20 minutes per day. All you have to show is an area of skin about the size of your face.
Without vitamin D from sunlight exposure, lactose assists with the use of calcium. So, cultures with easy access to leafy greens plus sunlight or fish, calcium is taken care of and milk has no advantage. Cultures without access to leafy greens, sunlight or seafood need dairy either as a source of calcium, lactose, or both. You can read more about it in a previous post.
Did you know that in the Old West, people used to have pig drives, the same way they had cattle drives? They marched huge herds of pigs across the country to be slaughtered. Also, pigs attack and kill people every year, including one man who was pinned to his tractor. We have a very strange relationship with pigs. A new book, Lesser Beasts by Mark Essig, tells you everything you need to know about the fascinating history of swine. You’ll learn how much you really have in common with pigs, plus everything else that you didn’t know you wanted to know.