It started innocently enough from a book review on Salon about the real history of the United States (as opposed to the propaganda they teach us in school). This led me (as it always does) to Wikipedia, and an article on Samoset, then Squanto, Smallpox Vaccine, Equus scotti, History of Native Americans, Cherokee (and the Cherokee Freedmen), John White, Teosinte, Amaranth, Pellagra, overnutrition (a quaint euphemism for obesity), the history of maize, and genetic diversity. Then (picking up other names from the original article) to Snorri Sturluson (by mistake!), The history of Iceland, Santo Domingo, Hispaniola, Amerigo Vespucci, Terra Incognita, Terra Australis, The Renaissance, polymath, Indian mathematics, the number zero, Lorenzo de Medici, Italy, History of Jews in Italy, Luigi Luzzati, Roman ghetto, Richard Amerike, and finally Manifest Destiny. Whew!