Can bacteria be as smart as we are? Can ants think? And fish? Yes, says Frank Vertosick, a neurosurgeon who combats our elitism about intelligence in this brilliant book. A gifted writer and author of the widely praised Why We Hurt, Vertosick shows us that intelligence--the ability to react to the outside world, to change behavior, and survive-can be found wherever life exists. He demonstrates the keen intelligence of our immune system, how lowly bacteria mutate and outwit antibiotics, and how canny cancer cells elude our natural defenses. A fascinating journey through worlds of unknown science and an unsettling argument against our valuing of brain intelligence above all else, The Genius Within tells a fascinating scientific story, one that could shake our ethical foundation to its core.