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armor

(Encyclopedia)armor, apparatus for defense of persons, horses, and such objects as vehicles, naval vessels, and aircraft. Body armor developed early as protective suits made of such materials as leather, shells, wo...

Cenozoic era

(Encyclopedia)Cenozoic era sēnəzōˈĭk, sĕn– [key], last major division of geologic time (see Geologic Timescale, tablegeologic timescale, table) lasting from 65 million years ago to the present. The Cenozoic...

Crane, Hart

(Encyclopedia)Crane, Hart (Harold Hart Crane), 1899–1932, American poet, b. Garrettsville, Ohio. He published only two volumes of poetry during his lifetime, but those works established Crane as one of the most o...

mutation

(Encyclopedia)mutation, in biology, a sudden, random change in a gene, or unit of hereditary material, that can alter an inheritable characteristic. Most mutations are not beneficial, since any change in the delica...

tree shrew

(Encyclopedia)tree shrew, small, arboreal mammal of the family Tupaiidae, found in S Asia. The 17 known species of tree shrews are classified as the order Tupaioidea or Scandentia. Tree shrews superficially resembl...

clone

(Encyclopedia)clone, group of organisms, all of which are descended from a single individual through asexual reproduction, as in a pure cell culture of bacteria. Except for changes in the hereditary material that c...

Albert I, king of the Belgians

(Encyclopedia)Albert I, 1875–1934, king of the Belgians (1909–34), nephew and successor of Leopold II. He married (1900) Elizabeth, a Bavarian princess. In World War I his heroic resistance (1914) to the German...

Albert II, king of the Belgians

(Encyclopedia)Albert II, 1934–, king of the Belgians (1993–2013), the younger son of Leopold III. He married Donna Paola Ruffo de Calabria in 1959; they have three children. Albert became king when Baudouin, hi...

Foursquare Gospel, International Church of the

(Encyclopedia)Foursquare Gospel, International Church of the, fundamentalist Christian Church and evangelistic missionary body organized in California by Aimee Semple McPherson and Minnie Kennedy in 1927. It derive...

Interior, United States Department of the

(Encyclopedia)Interior, United States Department of the, federal executive department established in 1849, delegated custodian of U.S. natural resources, and whose head, the Secretary of the Interior, has cabinet r...