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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A cow produces around 200,000 glasses of milk in her lifetime.
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You forget 90% of your dreams.
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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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