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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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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.

Mammals posses a number of physiological pathways related to stress. One example is the hypothalamic Mammals posses a number of physiological pathways related to stress. One example is the hypothalamic
The number of words correctly completed in the New York Times crossword puzzle increases with age ... The number of words correctly completed in the New York Times crossword puzzle increases with age ...
Mechanism of action of anti-parkinson drugs. (a) Levodopa therapy increases dopamine production; (b) ... Mechanism of action of anti-parkinson drugs. (a) Levodopa therapy increases dopamine production; (b) ...
The results of a cytogenetic survey of over 4,000 miscarriages show a wide variation in how often sp The results of a cytogenetic survey of over 4,000 miscarriages show a wide variation in how often sp
Number writing practice 1-30 kindergarten Number writing practice 1-30 kindergarten
Separation of variable number tandem repeat (VNTR) alleles after PCR amplification Separation of variable number tandem repeat (VNTR) alleles after PCR amplification
Video: Action potentials - electrical characteristics and generation

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