Why do some people remember things better than other people? What causes Alzheimer’s disease? What is fainting? What happens in the brain when you feel ‘confused’? What is the impact of speaking multiple languages on the brain? What effect does cyanide have on the brain? Do you learn faster when you’re younger? Why (not)? Do some people have stronger mental imagery than others? And does this affect how they learn? How does stress affect your brain? Do we really have a reptile brain, a mammal brain, and a human brain inside our heads?