How many neurons are in the human brain?
The human brain contains about 86 billion neurons.
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- How common is color blindness?
“About 1 in 12 men are colorblind.”
Reference: National Eye Institute
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Chameleons can move their eyes in two different…
Chameleons can move their eyes in two different directions at the same time.
How much energy does the brain use?
The brain makes up only about 2% of body weight but uses about 20% of the body's energy.