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Wait - so flies are deadly to soldiers, but maggots are good for them? And why is it so hard to find a donor for a genital transplant these days? Mary Roach, author of \u201cGrunt: The Curious Science of Humans at War\u201d comes by to reveal the weird scientific secrets of the battlefield. And speaking of troops, the aunts come marching in again - we\u2019ve got more auntie stories!\n\n\nGUEST\nMary Roach\nAuthor\nhttp://maryroach.net/\n\n\nHOUSE BAND\nCasey Bozell\nViolinist\nkeepclassicalweird.com\xa0\xa0\nLearn more about your ad choices. Visit megaphone.fm/adchoices