Apparently you have no idea what Lake Superior looks like. It's hardly "totally froze over", but a fair amount of it is. And as I've said before, the operative term is 'CLIMATE CHANGE'. And don't forget, the Midwest and East Coastal areas makes-up a very portion of the Earth's surface. I'll bet that the people in Australia would debate you as to whether we're experiencing 'Global Warming' or not:
http://www.theguardian.com/environment/southern-crossroads/2014/feb/21/extreme-heat-in-australia-more-longer-hotter
http://www.climatecentral.org/news/heatwave-frequency-surpasses-levels-predicted-for-2030-17084
http://www.smh.com.au/environment/weather/el-nino-threat-turns-up-heat-on-australias-suffering-farmers-20140211-32fu9.html

OCU