Why don’t we use stem cell therapy for MS? Why is it easier to learn a language as a kid? Why do some people remember their dreams and others do not? How does music affect mental health? Why do Dutch people say “I have sawdust in my head” when they do something stupid? When are we able to solve MS? Why do children outperform adults in the game of ‘concentration’? How does our brain create a 3D world? Is this possible with just one eye? Can you unlearn sleeping in the dark? What is the ‘brain freeze’ sensation when eating or drinking something cold?