How does speaking multiple languages impact the brain? Why do some people remember their dreams and others do not? Does neuroscience provide better explanations for behaviour than psychology? Can I learn from a text by listening to it while I sleep?  Is the brain more or less active during sleep? Why is sleep so essential? Can brain implants read and control our minds? What is the impact of speaking multiple languages on the brain? Why are you grumpy after a bad night of sleep? Are emotions experienced in the heart or the brain?