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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

(A) Bronchopneumonia with localized pattern. (B) Lobar pneumonia with a diffuse pattern within the l (A) Bronchopneumonia with localized pattern. (B) Lobar pneumonia with a diffuse pattern within the l
Age-Crime Relationship in (a) 1842 and (b) 1992 Age-Crime Relationship in (a) 1842 and (b) 1992
Asomatognosia typically involves damage to the right parietal lobe. Asomatognosia typically involves damage to the right parietal lobe.
A participant in a sleep experiment. A participant in a sleep experiment.
Influences on Temperature: South-facing slopes are typically more vegetated than north-facing ... Influences on Temperature: South-facing slopes are typically more vegetated than north-facing ...
Harry and Gus fish the same lake together from the same boat. Each morning Harry typically ... Harry and Gus fish the same lake together from the same boat. Each morning Harry typically ...
Video: Helper T cell receptors, activation, proliferation, differentiation & action

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