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toxic waste
(Encyclopedia) toxic waste is waste material, often in chemical form, that can cause death or injury to living creatures. It usually is the product of industry or commerce, but comes also from…life
(Encyclopedia) life, although there is no universal agreement as to a definition of life, its biological manifestations are generally considered to be organization, metabolism, growth, irritability,…nail, in carpentry
(Encyclopedia) nail, metal pin driven by force applied at one end into pieces of material, usually wood, to join them together. The strength of a nailed joint depends on the properties of the wood,…napalm
(Encyclopedia) napalmnapalmnāˈpäm [key], incendiary material developed during World War II by Harvard scientists cooperating with the U.S. army and used in bombs and flame throwers. Napalm is based…Arber, Werner
(Encyclopedia) Arber, WernerArber, Wernervĕrˈnər ärˈbər [key], 1929–, Swiss microbiologist. A professor at the Univ. of Geneva (1960–70) and later at the Univ. of Basel (1971–), Arber worked with…Allouez, Claude Jean
(Encyclopedia) Allouez, Claude JeanAllouez, Claude Jeanklōd zhäN älwāˈ [key], 1622–89, French Jesuit missionary in Canada and the American Midwest. After arriving (1658) in Canada he served at posts…Hunt, William Holman
(Encyclopedia) Hunt, William Holman, 1827–1910, English painter. Hunt was a founder of the Pre-Raphaelite brotherhood and one of its most conscientious exponents. His paintings are often crude in…hornbook
(Encyclopedia) hornbook, primer of a kind in use from the 15th to the 18th cent. On one side of a sheet of parchment or paper the matter to be learned was written or printed; over the sheet, for its…quartzite
(Encyclopedia) quartzite, usually metamorphic rock composed of firmly cemented quartz grains. Most often it is white, light gray, yellowish, or light brown, but is sometimes colored blue, green,…Simpson, George Gaylord
(Encyclopedia) Simpson, George Gaylord, 1902–84, American paleontologist and zoologist, b. Chicago, Ph.D. Yale, 1926. He became assistant curator of vertebrate paleontology at the American Museum of…Trending
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