Why are you grumpy after a bad night of sleep? What happens in the brain when you feel ‘confused’? What goes wrong in the brain when I lose focus? Did the gigantic dinosaurs also have gigantic brains and a gigantic number of neurons? What happens in the brain with ALS? Can brain implants read and control our minds? How does your brain know that you want to move? Why is it easier to learn a language as a kid? How does personality arise? And does it change over the course of your life? Are there people or animals with more or fewer than two brain hemispheres?