How does music affect mental health? What is the impact of speaking multiple languages on the brain? Why do Dutch people say “I have sawdust in my head” when they do something stupid? Are there people or animals with more or fewer than two brain hemispheres? How do brain cells communicate with each other? Why is sleep so essential? Is it true that you can be ‘left-brained’ or ‘right-brained’? Why is some information stored so quickly in the brain, while other information takes much longer? How is it possible that we can hear either ‘green needle’ or ‘brainstorm’ whilst the audio fragment remains the same? How does your brain know that you want to move?