Which brain region is the most important? What is the ‘brain freeze’ sensation when eating or drinking something cold? Is dopamine good for you and serotonin bad? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Can I learn from a text by listening to it while I sleep?  Are there people or animals with more or fewer than two brain hemispheres? Do the male and female brain differ? What effect does cyanide have on the brain? Are computers smarter than humans? Can brain implants read and control our minds?