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environmental impact statement

(Encyclopedia)environmental impact statement, analysis of the impact that a proposed development, usually industrial, will have on the natural and social environment. It includes assessment of long- and short-term ...

decompression sickness

(Encyclopedia)decompression sickness, physiological disorder caused by a rapid decrease in atmospheric pressure, resulting in the release of nitrogen bubbles into the body tissues. It is also known as caisson disea...

Lao Tzu

(Encyclopedia)Lao Tzu lou dzə [key], fl. 6th cent. b.c., Chinese philosopher, reputedly the founder of Taoism. It is uncertain that Lao Tzu [Ch.,=old person or old philosopher] is historical. His biography in Ssu-...

lie detector

(Encyclopedia)lie detector, instrument designed to record bodily changes resulting from the telling of a lie. Cesare Lombroso, in 1895, was the first to utilize such an instrument, but it was not until 1914 and 191...

exchange-traded fund

(Encyclopedia)exchange-traded fund (ETF), in finance, an investment company that in exchange for the deposit of a portfolio of stocks, bonds, commodities, or other assets issues securities that represent those asse...

Bulfinch, Charles

(Encyclopedia)Bulfinch, Charles, 1763–1844, American architect, b. Boston. A member of the Boston board of selectmen in 1791, he was chosen chairman in 1799—an office equivalent to mayor and held by Bulfinch fo...

chemotherapy

(Encyclopedia)chemotherapy kēˌmōthĕrˈəpē [key], treatment of disease with chemicals or drugs. One chemotherapeutic approach is the development of selectively toxic substances, i.e., substances that can destr...

Ryan, Paul Davis

(Encyclopedia)Ryan, Paul Davis, 1972–, U.S. politician, b. Janesville, Wis., grad. Miami Univ. (B.S. 1992), Speaker of the U.S. House of Representatives (2015–19). A politically active, conservative Republican,...

caricature

(Encyclopedia)caricature, a satirical drawing, plastic representation, or description which, through exaggeration of natural features, makes its subject appear ridiculous. Although 16th-century Northern painters, s...