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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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).
![The Cordulegastridae are a family of Odonata (dragonflies) from the suborder Anisoptera. They are co](https://biology-forums.com/gallery/47/medium_12359_26_04_12_5_12_28.jpeg)
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