The barbecue is going great; Uncle Fred gets the coals going on the first try. And then--oh, no!--dozens of yellow-and-black insects swarm in out of nowhere, scuttling all over the food, falling into the drinks, buzzing peevishly about people's heads. Next thing you know, you and three friends have been stung. Big red welts start forming on your body. What a disaster!
Sound familiar? You hear it more and more now. America's picnics are being overrun by European yellow ...