Can a brain scan show whether people are already producing their language response while their conversation partner is still speaking? Can you unlearn sleeping in the dark? How does our brain create a 3D world? Is this possible with just one eye? How does personality arise? And does it change over the course of your life? What is already known about long covid and the brain? Can I learn from a text by listening to it while I sleep?  Is it true that you can be ‘left-brained’ or ‘right-brained’? Why do some people remember their dreams and others do not? How are memories made in the brain? Why is sleep so essential?