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In 1864, the first barbiturate (barbituric acid) was synthesized.

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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

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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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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

A star-forming region in the Large Magellanic Cloud. A star-forming region in the Large Magellanic Cloud.
A Gas- and Dust-Rich Region of Orion A Gas- and Dust-Rich Region of Orion
Region of the Search for Extraterrestrial Intelligence Region of the Search for Extraterrestrial Intelligence
Flanked region Flanked region
A first aid box should be centrally located in the shop and kept stocked with the recommended ... A first aid box should be centrally located in the shop and kept stocked with the recommended ...
A gradient of bicoid mRNA (blue stain) as concentrated in anterior region A gradient of bicoid mRNA (blue stain) as concentrated in anterior region
Video: Introduction to Macular Degeneration

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