When are we able to solve MS? What happens in the brain when you take psychedelics? Why is sleep so essential? What is the purpose of brain research? Are there people or animals with more or fewer than two brain hemispheres? Is the brain more or less active during sleep? Why do some people remember their dreams and others do not? Is it true that you can be ‘left-brained’ or ‘right-brained’? Why don’t we use stem cell therapy for MS? Can you distinguish between people who are visual or auditory learners?