Is the brain more or less active during sleep? What is the impact of speaking multiple languages on the brain? Why is it easier to learn a language as a kid? Why do some people remember things better than other people? How is it that some people see an object as blue, while others say that same object is green? Why do people still receive electroshock therapy? Do colours appear the same to everyone? What goes wrong in the brain when I lose focus? What is fainting? Is there a link between rheumatoid arthritis and anxiety?