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vanilla

(Encyclopedia)vanilla, a plant of the genus Vanilla of the family Orchidaceae (orchid family). Vines of hot, damp climates, most are indigenous to Central and South America, especially Mexico, but are now cultivate...

quetzal

(Encyclopedia)quetzal kāsälˈ [key], common name for a magnificent bird of the family Trogonidae (trogon family), found in the rain forests from S Mexico to Costa Rica at altitudes of up to 9,000 ft (2,745 m). It...

fog

(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...

Biosphere 2

(Encyclopedia)Biosphere 2, privately funded ecological research project in which eight people lived sealed in a 3.15-acre (1.28-hectare) structure for two years (Sept. 26, 1991–Sept. 26, 1993). Located in Oracle,...

Nelson, Willie

(Encyclopedia)Nelson, Willie, 1933–, American country singer, guitarist, and songwriter, b. Abbott, Tex. Nelson began playing professionally at 10 and joined a western swing band as a teenager. In the 1960s he mo...

levee

(Encyclopedia)levee lĕvˈē [key] [Fr.,=raised], embankment built along a river to prevent flooding by high water. Levees are the oldest and the most extensively used method of flood control. They are constructed ...

Roraima

(Encyclopedia)Roraima ro͝orīˈmə [key], state (1996 pop. 247,724), 88,843 sq mi (230,103 sq km), NW Brazil, on the border of Venezuela and Guyana. Boa Vista is the capital. Located almost entirely in the Guiana ...

Abidjan

(Encyclopedia)Abidjan ăbĭjänˈ [key], city (2021 est. pop. 27,263,180 ), former capital of Côte d'Ivoire, a port on the Ébrié Lagoon (an arm of the Gulf of Guinea). Abidjan is Cô...

ecology

(Encyclopedia)ecology, study of the relationships of organisms to their physical environment and to one another. The study of an individual organism or a single species is termed autecology; the study of groups of ...

Negev

(Encyclopedia)Negev nĕgˈĕb [key] [Heb.,=dry], hilly desert region of S Israel, c.5,140 sq mi (13,310 sq km), bordered by the Judaean Hills, the Wadi Arabah, the Sinai peninsula, and the narrow Mediterranean coas...