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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
Vaccines prevent between 2.5 and 4 million deaths every year.
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