The smallpox vaccine led to the global eradication of smallpox.
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The human brain operates on about 20 watts of power.
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The stegosaurus had a brain about the size of a walnut.
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The human brain operates on about 20 watts of power.
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Certain primates can recognize numerical quantities.
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The Earth's inner core is primarily iron and nickel.
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Gravitational waves were detected a century after Einstein predicted them.
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Fossilized footprints provide evidence of dinosaur behavior.
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