A group of international scientists ambled past the University. The leader was explaining local behaviors. “Minnesota winters are very cold,” he said. “These young people strip virtually naked and lie in the sun during spring and summer to store up heat for winter. Much of the inexpensive local housing, we theorize, is heated solely through the efforts of these students.” Embarrassed and slightly put out, Elmo sat up and put on his shirt. Although the temperatures were in the mid-70s both days, and partly cloudy, there was a 20 percent of showers today, and tomorrow there would be scattered thunderstorms in the afternoon. He might as well knock off for the day.