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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?
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.