Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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Cows can sleep standing up, but they can only dream lying down.
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There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
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Your body is creating and killing about 2.4 million red blood cells per second.
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