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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
The average office desk has 400 times more bacteria on it than a toilet.
There are more sensory neurons in the tongue than in any other part of the body.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
There are 60,000 miles of blood vessels in every adult human.
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