Join science author HP Newquist as he explores chocolate's fascinating history. Along the way, you'll meet colorful characters like the feathered-serpent god Quentzalcoatl, who gave chocolate trees to the Aztecs; Henri Nestlé, who invented milk chocolate while trying to save the lives of babies who couldn't nurse; and the quarrelsome Mars family, who split into two warring factions, one selling Milky Way, Snickers, and 3 Musketeers, the other Mars Bars and M&M's. From its origin as the sacred, bitter drink of South American rulers to the the familiar candy bars sold by today's multimillion dollar businesses, people everywhere have fallen in love with chocolate, the world's favorite flavor.