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61Health effects of tobacco — Part of a series on Tobacco …
62global warming — an increase in the earth s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. [1975 80] * * * Potential increase in global average surface temperatures resulting from… …
63space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …
64Law, Crime, and Law Enforcement — ▪ 2006 Introduction Trials of former heads of state, U.S. Supreme Court rulings on eminent domain and the death penalty, and high profile cases against former executives of large corporations were leading legal and criminal issues in 2005.… …
65childhood disease and disorder — Introduction any illness, impairment, or abnormal condition that affects primarily infants and children i.e., those in the age span that begins with the fetus and extends through adolescence. Childhood is a period typified by change,… …
66mathematics — /math euh mat iks/, n. 1. (used with a sing. v.) the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. 2. (used with a sing. or pl. v.) mathematical procedures,… …
67motion picture — motion picture, adj. 1. a sequence of consecutive pictures of objects photographed in motion by a specially designed camera (motion picture camera) and thrown on a screen by a projector (motion picture projector) in such rapid succession as to… …
68Romance languages — romance1 (def. 8). [1770 80] * * * Group of related languages derived from Latin, with nearly 920 million native speakers. The major Romance languages French, Spanish, Portuguese, Italian, and Romanian are national languages. French is probably… …
69Native American art — ▪ visual arts Introduction also called Indian art or American Indian art the visual art of the aboriginal inhabitants of the Americas, often called American Indians. For a further discussion of the visual art of the Americas produced in …
70Eighty Years' War — Relief of Leiden after the siege, 1574. Date 1568 1648 Location …
