Did you know?
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.
American feral farm cat
Extinct North American Megafauna
Soil Degradation and Loss
Portrait of Typical 12-year-old Boy and Girl, 1981 and 2007-2009
Loss of brain cells in a transgenic Huntington-disease mouse. (a) Section of normal mouse-brain stri
Creating a loss-of-function CFTR