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Did you know?

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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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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The average office desk has 400 times more bacteria on it than a toilet.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

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Many older adults live active lives well into their eighties and beyond. Many older adults live active lives well into their eighties and beyond.
Approximately 40 percent of farmers in the United States are 55 years old or older Approximately 40 percent of farmers in the United States are 55 years old or older
Older mothers more often deliver multiples—twins, triplets, or quads Older mothers more often deliver multiples—twins, triplets, or quads
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Video: Morphology of a tomato plant

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