Why don’t we use stem cell therapy for MS? Do the male and female brain differ? Is the brain more or less active during sleep? Are computers smarter than humans? Why is some information stored so quickly in the brain, while other information takes much longer? What causes Alzheimer’s disease? How does stress affect your brain? How heavy was Einstein’s brain? Does the size of your brain say anything about intelligence? Is dopamine good for you and serotonin bad? Why do some people remember things better than other people?