The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
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The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
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Your body is creating and killing about 2.4 million red blood cells per second.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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