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The thinking brain, the cerebrum, looks mostly the same all over—like a bowl of squishy, wrinkled gelatin. Make that two bowls.
Humans actually have two brains, one on either side of the head! The right cerebrum and the left cerebrum are mirror images of each other. But they don’t stand alone. A thin cord connects them.
Two brains are better than one. Suppose you had to stuff and seal a million envelopes. Wouldn’t it be faster if you stuffed them and a friend sealed them? Each person would focus on only one task, but you would work together to finish the job. The right and left brains work the same way. The right brain controls the left side of your body. The left brain controls the right side. Even though each brain looks like a mirror image of the other, it controls different activities. The illustration below shows which side of the brain takes on certain tasks in most people. However, not everyone is the same.
