Central air conditioning systems have become so pervasive in the United States that many of us take them for granted. Whether we are at work, home, or shopping for groceries, just about any place can offer shelter during those humid 90 degree summer days. Actually, central air conditioning is so common that approximately 92% of all new homes are built with central AC already installed.
Since the hottest temperatures in the United States occur in the South, recent estimates show that more than 85% of all summer homes have some type of air conditioning. But what do southern residents do when the power goes out in the middle of a hot and humid July night? Sure, they could just sweat it out like countless generations of human beings did before air conditioning was even invented. Since heat tolerance is r