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Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
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).
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.