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Healthiest States, 2014

The following table shows the healthiest states in the U.S. during 2014. The Healthiest State designation is awarded on the basis of 22 factors chosen by the United Health…

DK Science: Computer Reconstruction

Dinosaur on screenRebuilt in 3-DToday computers are used in all aspects of dinosaur study. In the field, fossil sites can be mapped and plotted using electronic measuring devices. In the laboratory…

Thomas Woodrow Wilson

  Born: 12/28/1856 Birthplace: Staunton, Va.   (Thomas) Woodrow Wilson was born in Staunton, Va., on Dec. 28, 1856. A Princeton graduate, he turned from law practice to post-graduate…

John Adam KASSON, Congress, IA (1822-1910)

KASSON, John Adam, a Representative from Iowa; born in Charlotte, Chittenden County, Vt., January 11, 1822; attended the local school; was graduated from the University of Vermont at…

Chemistry: Liquids and Intermolecular Forces

Liquids and Intermolecular ForcesChemistryLiquids and Intermolecular ForcesWhat's a Liquid?Intermolecular ForcesThe Effects of Intermolecular Forces In the last section, we discussed the…

Chemistry: Solutions

SolutionsChemistrySolutionsWhat Are Solutions?How and Why Do Things Dissolve?Determining the Concentration of a SolutionFactors That Affect SolubilityDilutions As I mentioned in the beginning of…

decimal system

(Encyclopedia) decimal system [Lat.,=of tenths], numeration system based on powers of 10. A number is written as a row of digits, with each position in the row corresponding to a certain power of 10…

Pisa

(Encyclopedia) PisaPisapēˈsä [key], city (1991 pop. 98,928), capital of Pisa prov., Tuscany, N central Italy, on the Arno River. It is now c.6 mi (9.7 km) from the Tyrrhenian Sea, which once reached…