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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

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The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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Congestive heart failure is a serious disorder that carries a reduced life expectancy. Heart failure is usually a chronic illness, and it may worsen with infection or other physical stressors.

Distribution of glaciers in North America (a) in the late twentieth century, and (b) 18,000 years ag Distribution of glaciers in North America (a) in the late twentieth century, and (b) 18,000 years ag
Wandering Albatrosses are colonial but have large widely spaced territories. Here a pair performs th Wandering Albatrosses are colonial but have large widely spaced territories. Here a pair performs th
Stem cells in late development Stem cells in late development
Percentages of adolescents indicating Benefits and Costs of employment. Percentages of adolescents indicating Benefits and Costs of employment.
Late Paleozoic Ice Age Late Paleozoic Ice Age
Sabrina's Fabric Land bought $5,000 of equipment at the beginning of 2015. Amortization ... Sabrina's Fabric Land bought $5,000 of equipment at the beginning of 2015. Amortization ...
Video: Chronology of leptin research (A history of leptin research)

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