Mars had an oxygen-rich atmosphere around 4 billion years ago
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The average person in their lifetime will spend an estimated 20,160 minutes kissing!
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Your body is creating and killing about 2.4 million red blood cells per second.
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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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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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The strangers in your dreams are actually people that you've seen in real life.
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