Did the gigantic dinosaurs also have gigantic brains and a gigantic number of neurons? Why do some people remember things better than other people? Why are you grumpy after a bad night of sleep? Does a 14T MRI scanner make more noise than a 3T MRI scanner? How is it that some people see an object as blue, while others say that same object is green? What is already known about long covid and the brain? Are there people or animals with more or fewer than two brain hemispheres? What is the ‘brain freeze’ sensation when eating or drinking something cold? Why is it easier to learn a language as a kid? Is the brain more or less active during sleep?