What is the impact of speaking multiple languages on the brain? Why do brain tissues have different colours? Why is it easier to learn a language as a kid? Why is sleep so essential? Is dopamine good for you and serotonin bad? Do we only use 10% of our brain? What is the ‘brain freeze’ sensation when eating or drinking something cold? How does your brain know that you want to move? How is it that some people see an object as blue, while others say that same object is green? What happens in the brain when you feel ‘confused’?