The Aztec word for avocado, ahuacatl, means "testicle" (probably because the fruit typically grows in pairs). But that's only the the second-most interesting thing you'll learn about avocados today. The first? Wild avocados are sort of an evolutionary anachronism; as Smithsonian's K. Annabelle Smith points out, they… » 11/04/13 10:19am 11/04/13 10:19am