Why do brain tissues have different colours? Why is it easier to learn a language as a kid? Does a 14T MRI scanner make more noise than a 3T MRI scanner? Can brain implants read and control our minds? Is dopamine good for you and serotonin bad? What happens when you have a blackout during an exam? Is the brain more or less active during sleep? What is fainting? Why do Dutch people say “I have sawdust in my head” when they do something stupid? Why is sleep so essential?