Ah, the casual, comfortable flip-flop: A symbol of summertime, an emblem of relaxation — and a harbinger of death? OK, well, that may be overstating it a little bit — but not by too terribly much, health experts say. TODAY, with the help of the University of Miami emergency mobile flip-flop lab, tested some footwear and found that there were more than 18,000 bacteria on just one pair of flip-flops. Even more shocking than the number of germs were the types represented — bacteria from fecal matter, skin and respiratory germs. One pair of 6-year-old flip-flops had germs that cause...