How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Why are you grumpy after a bad night of sleep? How is a neuron made?  How is it that some people see an object as blue, while others say that same object is green? How heavy was Einstein’s brain? Does the size of your brain say anything about intelligence? What is fainting? What goes wrong in the brain when I lose focus? What happens when you have a blackout during an exam? What is the impact of speaking multiple languages on the brain? Why is sleep so essential?