Is there a link between rheumatoid arthritis and anxiety? How does personality arise? And does it change over the course of your life? Can brain implants read and control our minds? Why is it easier to learn a language as a kid? Why is sleep so essential? What is the ‘brain freeze’ sensation when eating or drinking something cold? What is already known about long covid and the brain? What happens in the brain when you take psychedelics? 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?