Columbia Encyclopedia

(Encyclopedia) deafness, partial or total lack of hearing. It may be present at birth (congenital) or may be acquired at any age thereafter. A person who cannot detect sound at an amplitude of 20 decibels in a frequ...

(Encyclopedia) Declaration of Independence, full and formal declaration adopted July 4, 1776, by representatives of the Thirteen Colonies in North America announcing the separation of those colonies from Great Brita...

(Encyclopedia) dolphin, aquatic mammal, any of the small toothed whales of the family Delphinidae, numbering more than 50 species. These include the true, or beaked, dolphins, the killer whale, the pilot whale, and ...

(Encyclopedia)  CE5 The asteroid belt lies between the orbits of Mars and Jupiter. Gaps where no asteroids are found are called Kirkwood gaps. The Trojan asteroids share Jupiter's orbit with the planet. asteroid,...

(Encyclopedia) modern architecture, new architectural style that emerged in many Western countries in the decade after World War I. It was based on the “rational” use of modern materials, the principles of funct...

(Encyclopedia) Indian wars, in American history, general term referring to the series of conflicts between Europeans and their descendants and the indigenous peoples of North America. After 1860 the wars continued...

(Encyclopedia)  Supreme Court Justices(including dates on bench) Chief Justices Associate Justices ...

(Encyclopedia) Roosevelt, Theodore, 1858–1919, 26th President of the United States (1901–9), b. New York City. Alice, his daughter by his first wife, married Nicholas Longworth in the White House; “Princ...

(Encyclopedia) energy, sources of, origins of the power used for transportation, for heat and light in dwelling and working areas, and for the manufacture of goods of all kinds, among other applications. The develop...

(Encyclopedia)  CE5 Indiana, midwestern state in the N central United States. It is bordered by Lake Michigan and the state of Michigan (N), Ohio (E), Kentucky, across the Ohio River (S), and Illinois (W). Indu...