Why is some information stored so quickly in the brain, while other information takes much longer? Why is it easier to learn a language as a kid? Are computers smarter than humans? Can brain implants read and control our minds? Are emotions experienced in the heart or the brain? Why do some people remember their dreams and others do not? Do colours appear the same to everyone? Can you unlearn sleeping in the dark? What is the impact of speaking multiple languages on the brain? Why do people still receive electroshock therapy?