In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Thyroid conditions may make getting pregnant impossible.
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The horizontal fraction bar was introduced by the Arabs.
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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.
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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
Energy flows in a typical gasoline-powered car
Who Ends Up Poor? Poverty by Education and Race-Ethnicity
A typical ball-peen hammer.
Coolant flow through a typical engine cooling system.
A typical electric motor-driven AIR pump. This unit is on a Chevrolet Corvette and only works when ...
Typical disposal container for sharps such as needles.