Weighing a mere three pounds, the human brain is truly a wonder of design and function. "Mysteries of the Mind" explores all aspects of this most fascinating organ -- its structure and how it works, the effects of genetics and experience, the biology behind emotion and memory, as well as what happens when things go wrong. Continuing a "National Geographic" tradition for illustrating and clearly explaining the life sciences, "Mysteries of the Mind" was written by Richard Restak, M.D., a best-selling author and a national authority on the brain.