The speed of light in glass or water is slower than in a vacuum — this is how lenses and prisms work.
Fact #4577
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The human brain operates on about 20 watts of power.
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Fossil evidence suggests some dinosaurs cared for their young.
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The Earth's magnetic field is generated by its outer core.
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The human brain operates on about 20 watts of power.
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The Müller-Lyer illusion makes lines of equal length appear different.
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Monoclonal antibody therapies treat various diseases.
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The rubber hand illusion shows how easily the brain can adopt a fake limb.
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In 1996, Dolly the sheep became the first cloned mammal from an adult cell.
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