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Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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.
Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.
![Boreal forests, such as this one in Siberian Russia, are dominated by a few species of conifer trees](https://biology-forums.com/gallery/47/medium_33_27_08_11_11_56_24_1548799.jpeg)
![Young male Pacific Walruses on Cape Pierce in Alaska. Note the variation in the curvature and orient](https://biology-forums.com/gallery/47/medium_27599_22_04_12_7_15_08.jpeg)