Do colours appear the same to everyone? Why do some people remember their dreams and others do not? Do some people have stronger mental imagery than others? And does this affect how they learn? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Why is some information stored so quickly in the brain, while other information takes much longer? How does music affect mental health? How is a neuron made?  How do brain cells communicate with each other? Why is it easier to learn a language as a kid? How heavy was Einstein’s brain? Does the size of your brain say anything about intelligence?