Are computers smarter than humans? Do we really have a reptile brain, a mammal brain, and a human brain inside our heads? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Is there a link between rheumatoid arthritis and anxiety? Can you feel pain in your brain? Why do children outperform adults in the game of ‘concentration’? How does music affect mental health? Do colours appear the same to everyone? Why is some information stored so quickly in the brain, while other information takes much longer? What is already known about long covid and the brain?