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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).
Your heart beats over 36 million times a year.
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.
According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
![The meninges from the outside in: dura mater, arachnoid, and pia mater. Also showing the subarachnoi](https://biology-forums.com/gallery/47/medium_14755_07_10_12_3_19_31_93231166.jpeg)
![The female reproductive system. (a) Sagittal section through the pelvis. (b) Top view of pelvic orga](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_32_04_97171236.jpeg)