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While the human brain weighs only about three pounds, it utilizes between 20-25 percent of the oxygen in the body. Its complexities have kept scientists from discovering very much about its workings, but inroads have been made in the understanding of this organ that controls all of a body's functions. Innovators: Brain Power features a discussion by professors and researchers, who talk about new surgical techniques that enable neurosurgeons to better visualize the area in which they will operate. The ability of the brain to change according to the data it receives is of interest to scientists who study child development, and those who research the elderly.