Why do brain tissues have different colours? When are we able to solve MS? Can I learn from a text by listening to it while I sleep?  Why is sleep so essential? Are computers smarter than humans? Is it true that you can be ‘left-brained’ or ‘right-brained’? Do the male and female brain differ? What happens in the brain with ALS? Do we really have a reptile brain, a mammal brain, and a human brain inside our heads? Which brain region is the most important?