Why do children outperform adults in the game of ‘concentration’? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Are there people or animals with more or fewer than two brain hemispheres? Is there a link between rheumatoid arthritis and anxiety? What is the ‘brain freeze’ sensation when eating or drinking something cold? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? What goes wrong in the brain when I lose focus? Can you unlearn sleeping in the dark? How does personality arise? And does it change over the course of your life? Can I train plasticity?