In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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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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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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Only about 2% of the world population has green eyes.
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