How does speaking multiple languages impact the brain? Can brain implants read and control our minds? Are emotions experienced in the heart or the brain? How is a neuron made?  How are memories made in the brain? Can you unlearn sleeping in the dark? Is dopamine good for you and serotonin bad? Why don’t we use stem cell therapy for MS? How does your brain know that you want to move? What is already known about long covid and the brain?