It's commonly believed that that grandpa has more knowledge than his young whippersnapper of a grandkid. But do wrinkles on the face really relate to wrinkles on the brain?
WHAT'S INSIDE: INSIDE THE MIND
- The Human Brain
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Should we bother to interpret our dreams? Are these nighttime stories random brain impulses, or do they offer insight into our waking lives? Learn what's happening in your brain while you dream.