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lake, body of water
(Encyclopedia)lake, inland body of standing water occupying a hollow in the earth's surface. The study of lakes and other freshwater basins is known as limnology. Lakes are of particular importance since they act a...fossil
(Encyclopedia)fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and coal and sometime...Constance, Council of
(Encyclopedia)Constance, Council of, 1414–18, council of the Roman Catholic Church, some of its sessions being reckoned as the 16th ecumenical council. It was summoned to end the Great Schism (see Schism, Great),...Great Lakes, North America
(Encyclopedia)Great Lakes, group of five freshwater lakes, central North America, creating a natural border between the United States and Canada and forming the largest body of freshwater in the world, with a combi...Gregory VII, Saint
(Encyclopedia)Gregory VII, Saint, d. 1085, pope (1073–85), an Italian (b. near Rome) named Hildebrand (Ital. Ildebrando); successor of Alexander II. He was one of the greatest popes. Feast: May 25. Gregory's co...Schism, Great
(Encyclopedia)Schism, Great, or Schism of the West, division in the Roman Catholic Church from 1378 to 1417. There was no question of faith or practice involved; the schism was a matter of persons and politics. Sho...human evolution
(Encyclopedia)human evolution, theory of the origins of the human species, Homo sapiens. Modern understanding of human origins is derived largely from the findings of paleontology, anthropology, and genetics, and i...iconography
(Encyclopedia)iconography īˌkŏnŏgˈrəfē [key] [Gr.,=image-drawing] or iconology [Gr.,=image-study], in art history, the study and interpretation of figural representations, either individual or symbolic, reli...mass extinction
(Encyclopedia)mass extinction, the extinction of a large percentage of the earth's species, opening ecological niches for other species to fill. There have been at least ten such events. The five greatest were thos...Japanese architecture
(Encyclopedia)Japanese architecture, structures created on the islands that constitute Japan. Evidence of prehistoric architecture in Japan has survived in the form of models of terra-cotta houses buried in tombs a...Browse by Subject
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