The human brain operates on about 20 watts of power.
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Fossils are formed when remains are preserved in rock over millions of years.
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The Hawthorne experiments studied workplace productivity.
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Lightning can heat air hotter than the surface of the Sun.
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Fireflies produce light through a chemical reaction.
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In 1954, a scientist allowed himself to be bitten by mosquitoes to study malaria transmission.
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Fossil evidence suggests some dinosaurs cared for their young.
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Antiretroviral therapy transformed HIV from fatal to manageable.
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The Earth's magnetic field originates in its molten outer core.
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