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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.
The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
![scanning electron micrograph showing an ovum (pink) released by the ovary at ovulation surrounded by](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_48_04_82471241.jpeg)
![Lymphatic vessels (green) pick up excess tissue fluid, purify it in lymph nodes, and return it to th](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_17_45_85032206.jpeg)