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There are approximately 3 million unintended pregnancies in the United States each year.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.
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).