In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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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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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Medication errors are three times higher among children and infants than with adults.
Constructing large motifs from smaller ones
(a) The relative age ranges of different dating techniques depend upon the half-life of the system u
The large intestine.
A cutaway of a typical water pump showing the long bearing assembly and the seal. The weep hole is ...