I am just a farmer that believes everything in nature runs in cycles therefore I do doubt the global warming theory. The global warming theory is no more than a theory of what is going on from collected facts. Unfortunately many times that data is flawed....not neccessarily deliberately but in many cases through ignorance. The temperatures were according to your study done near or in cities. You do not need to be a scientist to realize that the concrete and asphalt draws and absorbs heat. In other words the further away from the large cities with all the concrete the tempatures would be cooler. If you doubt me feel free when the temperature is in the 90's lay on your grass for 5 min. then go lay on a concrete slab for 5 min.. Please do not protest to do away with concrete buildings and roads.