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Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Phlebotomist using a needle to withdraw blood. Phlebotomist using a needle to withdraw blood.
Talar Tilt Test Talar Tilt Test
Early in the twentieth century, when malnutrition was common, companies such as this one advertised Early in the twentieth century, when malnutrition was common, companies such as this one advertised
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An example of the key features of pesticide labels. The EPA requires the inclusion of specific ... An example of the key features of pesticide labels. The EPA requires the inclusion of specific ...
Morgan’s test-cross analysis of genetic linkage between autosomal genes Morgan’s test-cross analysis of genetic linkage between autosomal genes
Video: The Pressure Flow Model in a Plant

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