Why is it easier to learn a language as a kid? How does stress affect your brain? Why are you grumpy after a bad night of sleep? How does speaking multiple languages impact the brain? Why do people still receive electroshock therapy? Why don’t we use stem cell therapy for MS? What is fainting? Is it true that you can be ‘left-brained’ or ‘right-brained’? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? Is the brain more or less active during sleep?