Let’s take a look at agricultural history going back to the years of A.D. 800 to about 1300. This information comes from an interesting book, “Climate of Fear,” written by Dr. Thomas Moore, who has taught at Michigan State University, Stanford University and UCLA. Using oxygen isotope measurements, upper treelines in Europe and written records, Dr. Moore was able to come up with a good idea of what farming and society in general were like during those centuries of long ago. And the picture he came up with is interesting and has some application for today. Most of northern Europe and Greenland and Iceland were warmer than they are now. The Mediterranean, Arabian peninsula and northern Africa had more rainfall than they get today. Here in North America, we experienced better weather. Overall around the world, according to Dr. Moore, mankind flourished as never before. During these years, dramatic changes took place in agriculture.