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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
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).