How do brain cells communicate with each other? Do colours appear the same to everyone? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? What effect does cyanide have on the brain? Why do Dutch people say “I have sawdust in my head” when they do something stupid? What is the ‘brain freeze’ sensation when eating or drinking something cold? Are computers smarter than humans? Did the gigantic dinosaurs also have gigantic brains and a gigantic number of neurons? What is fainting? What is the purpose of brain research?