How does stress affect your brain? What goes wrong in the brain when I lose focus? How does speaking multiple languages impact the brain? Do we really have a reptile brain, a mammal brain, and a human brain inside our heads? Can I learn from a text by listening to it while I sleep?  Can I train plasticity? Which brain region is the most important? What is the effect of a visual impairment on the brain? And is there anything we can do to restore it? What effect does cyanide have on the brain? Why is some information stored so quickly in the brain, while other information takes much longer?