Why is sleep so essential? Is the brain more or less active during sleep? Why is some information stored so quickly in the brain, while other information takes much longer? What effect does cyanide have on the brain? Why do some people remember their dreams and others do not? How heavy was Einstein’s brain? Does the size of your brain say anything about intelligence? What happens in the brain with ALS? Can brain implants read and control our minds? How is a neuron made?  Is it true that you can be ‘left-brained’ or ‘right-brained’?