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Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.