After a bitterly cold winter, a pretty chilly spring and what seems to many of us here in Wisconsin a darn mild summer, global climate change may not be our most pressing concern.  I, for one, find it easy to mistake my home for the whole world, so it came as a surprise to discover that globally 2014 ranks as the fourth hottest year on record, at least through the end of June, and that many scientists are betting we’ll end up breaking the all time record before the year is out. Globally, May and June were the hottest months since 1880 when we started keeping records. For several months running our atmosphere has been above 400 parts per million ...