Do we really have a reptile brain, a mammal brain, and a human brain inside our heads? How is a neuron made?  Which brain region is the most important? How does our brain create a 3D world? Is this possible with just one eye? Can I learn from a text by listening to it while I sleep?  What is the ‘brain freeze’ sensation when eating or drinking something cold? Why don’t we use stem cell therapy for MS? Why is it easier to learn a language as a kid? How does music affect mental health? What is the impact of speaking multiple languages on the brain?