Smiling can influence mood through feedback to the brain.
Fact #951
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DNA carries genetic information in living organisms.
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The Earth's interior is layered into crust, mantle, and core.
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In 1809, two countries declared war and then forgot to sign a peace treaty for years.
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In 1953, Watson and Crick described the double-helix structure of DNA.
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Multitasking often reduces overall task performance.
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A hyena’s jaw is powerful enough to crush bone.
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Fossilized bones reveal information about prehistoric diets.
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Humans reached the Moon less than 70 years after powered flight.
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