How does music affect mental health? How do brain cells communicate with each other? Is there a link between rheumatoid arthritis and anxiety? How is a neuron made?  What is already known about long covid and the brain? How can I find out which stage of cognitive decline I am in, and how can I prevent Alzheimer’s disease or dementia? Is the brain more or less active during sleep? Do we only use 10% of our brain? Why is it easier to learn a language as a kid? Did the gigantic dinosaurs also have gigantic brains and a gigantic number of neurons?