Actually ,,there is a sign of "Global Warming", going on right now here in Iowa. Before I moved down here, from Northern MI, I asked the weather service if this part of the country experienced alot of freezing rain. They said no,,that was common further south, in Mo, Ark, more snow up here. Well since I have moved out here that is about all I have seen, every winter. More ICE than snow. This constant threat of freezing rain is because the upper atomosphere is too warm. The surface temps are cold like winter is supposed to be. Seems to me the south is moving north. Joke if you want.