Walking the World, the first novel of Terrence Kero's groundbreaking trilogy about human migration, tells the compelling story of prehistoric hunter-gatherers who had no crops, no domesticated animals, and no means of transportation besides their feet, people who walked and walked until they eventually populated the world. The novel opens in San Francisco in 1999, when Lisa Koskinen receives a gift from a distant relative in Finland: an odd necklace made of large canine teeth strung on a leather thong. With the help of carbon-dating and DNA analysis, Lisa and her parents gradually trace the...