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The human body produces and destroys 15 million blood cells every second.

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There are 20 feet of blood vessels in each square inch of human skin.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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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.

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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Long-term studies of the Glanville fritillary butterfly, Melitaea cinxia, have provided exceptional Long-term studies of the Glanville fritillary butterfly, Melitaea cinxia, have provided exceptional
A full-term pregnancy. Image illustrates position of the fetus and the structures associated with pr A full-term pregnancy. Image illustrates position of the fetus and the structures associated with pr
Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of Bipolar disease. The term bipolar means “pertaining to two poles.” The individual with this form of
Associative Long-Term Potentiation Associative Long-Term Potentiation
The Role of the Hippocampus and Cerebral Cortex in Long-Term Memory Storage The Role of the Hippocampus and Cerebral Cortex in Long-Term Memory Storage
The relationship between the permissible exposure limit (PEL), the short-term exposure limit (STEL), ... The relationship between the permissible exposure limit (PEL), the short-term exposure limit (STEL), ...
Video: Lactation and Breast Feeding

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