(Encyclopedia) dissociation, in chemistry, separation of a substance into atoms or ions. Thermal dissociation occurs at high temperatures. For example, hydrogen molecules (H2) dissociate into atoms (…
(Encyclopedia) staff tree, common name for some temperate members of the Celastraceae, a family of trees and shrubs (many of them climbing forms), widely distributed except in polar regions. These…
(Encyclopedia) SpitsbergenSpitsbergenspĭtsˈbərgən [key], formerly Vestspitsbergen, largest island (15,075 sq mi/39,044 sq km) of Svalbard, a Norwegian possession in the Arctic Ocean. It rises to…
(Encyclopedia) Macon, NathanielMacon, Nathanielmāˈkən [key], 1758–1837, American political leader, b. near the present Warrenton, N.C. He served in the American Revolution and later became a…
(Encyclopedia) mangomangomăngˈgō [key], evergreen tree of the Anacardiaceae (sumac family), native to tropical E Asia and now grown in both hemispheres. The chief species, Mangifera indica, is…
The Terrifying Truth About Dracula How a 15th-century Walachian prince became a frightening modern legend by David Johnson The rugged Transylvanian Alps provide one of the most…
CLASS: MAMMALIADIVING PLATYPUSLEAPING DOLPHINFIND OUT MOREAll mammals are endothermic (warm-blooded), have some fur or hair on their body, and feed their young milk. They have a bony skeleton…
The oldest, the tallest, the fastest, and the longest by Mike Morrison and Chris Frantz Have you ever wondered who threw the fastest pitch in Major League Baseball history? Or who is the…
(Encyclopedia) fox, carnivorous mammal of the dog family, found throughout most of the Northern Hemisphere. It has a pointed face, short legs, long, thick fur, and a tail about one half to two thirds…
Saint Columban It is no wonder that this saint's emblem is the bear, as he seems to have had a knack for causing trouble by Ann-Marie Imbornoni St. Columban (540?–615) Also known as…
