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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Medication errors are three times higher among children and infants than with adults.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
Did you know?
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).