Although Juicy Fruit(R) gum was introduced to North Americans in 1893, Native Americans in Mesoamerica were chewing gum thousands of years earlier. And although in the last decade "biographies" have been devoted to salt, spices, chocolate, coffee, and other staples of modern life, until now there has never been a full history of chewing gum. Chicle is a history in four acts, all of them focused on the sticky white substance that seeps...