This new limited series on Netflix is causing a lot of controversy in the archaeological community. Graham Hancock, the host, loves to say, “Human beings are a species with amnesia.” To prove this he travels around the world to pre-historic sites and makes the argument that an advanced human civilization existed during the last Ice Age before being wiped out by asteroid strikes around 12,800 years ago. I’m a natural born skeptic, but I’ve read several of Hancock’s books and they raise a lot of questions that archaeologists haven’t, or can’t, sufficiently answer. Sometimes I wonder why I’m so interested in the mysteries of prehistory. The conclusion I’ve come to is that they calm me by making my own problems—finishing my Perfectly Imperfect, writing the next book, death—feel less significant.