How does stress affect your brain? Are there people or animals with more or fewer than two brain hemispheres? Do colours appear the same to everyone? What is fainting? What is the impact of speaking multiple languages on the brain? Is dopamine good for you and serotonin bad? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? How do brain cells communicate with each other? Are computers smarter than humans? What happens in the brain with ALS?