The frosted elfin is thriving on military bases
                                
                                
                                    (Newser) -
                                    In the shadow of giant war machines, a tiny, rare butterfly is flourishing. Oddly, experts say, the US military gets the credit. The frosted elfin, which flutters along on a 1-inch wingspan, has found a home at several defense installations because of the way the military manages open spaces, says...