Have you ever wondered why you have a brain? Possibly not, but neuroscientist Lisa Feldman Barrett is well-poised to demystify that big gray blob between your ears. In this accessible collection, she reveals where brains came from, how they're structured (and why it matters), and how yours works in tandem with other brains to create everything you experience. Along the way, Barrett dismantles popular myths about the "lizard brain" and the alleged battle between thoughts and emotions—or between nature and nurture—to determine your behavior.