What is the ‘brain freeze’ sensation when eating or drinking something cold? How is it that some people see an object as blue, while others say that same object is green? Why do Dutch people say “I have sawdust in my head” when they do something stupid? How is a neuron made?  What happens when you have a blackout during an exam? What effect does cyanide have on the brain? What is the impact of speaking multiple languages on the brain? Is it true that you can be ‘left-brained’ or ‘right-brained’? Are there people or animals with more or fewer than two brain hemispheres? Is there a link between rheumatoid arthritis and anxiety?