What is the purpose of brain research? How are memories made in the brain? How is it that some people see an object as blue, while others say that same object is green? Is there a link between rheumatoid arthritis and anxiety? How does our brain create a 3D world? Is this possible with just one eye? Do we only use 10% of our brain? Are there people or animals with more or fewer than two brain hemispheres? Can a brain scan show whether people are already producing their language response while their conversation partner is still speaking? How does stress affect your brain? Can you unlearn sleeping in the dark?