Nutritional aspects of cannibalism and other pieces of odd research win Ig Nobel prizes

Cannibalism isn’t very nutritious, roller coasters can remove kidney stones, self colonoscopy is a useful idea, postage stamps can evaluate nocturnal penile erections, human saliva is a good cleaning agent, and other surprising discoveries won Ig Nobel Awards last night at Harvard University in Cambridge, Massachusetts. The Ig Nobels are for research that first makes people laugh and then makes them think. They are given annually by the science...