subterranean irrigation -

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• Touat — ▪ oasis group, Algeria also spelled  Tuat         oasis group, west central Algeria. Situated along the Wadi Messaoud (called Wadi Saoura farther north), the Touat oases are strung beadlike in a northwest southeast orientation west of the Plateau …   Universalium

• pre-Columbian civilizations — Introduction       the aboriginal American Indian (Mesoamerican Indian) cultures that evolved in Meso America (part of Mexico and Central America) and the Andean region (western South America) prior to Spanish exploration and conquest in the 16th …   Universalium

• Qanat — A qanat (from ar. قناة) or kareez (from fa. كاريز) is a water management system used to provide a reliable supply of water to human settlements or for irrigation in hot, arid and semi arid climates. The technology is known to have developed in… …   Wikipedia

• Stone Age — the period in the history of humankind, preceding the Bronze Age and the Iron Age, and marked by the use of stone implements and weapons: subdivided into the Paleolithic, Mesolithic, and Neolithic periods. [1860 65] * * * First known period of… …   Universalium

• Wetland — For other uses, see Wetland (disambiguation). The Florida Everglades massive wetland system in the United States saw 1.7 billion gallons of fresh water flushed from it daily and pumped into the ocean following one of the most successive water… …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Asia — /ay zheuh, ay sheuh/, n. a continent bounded by Europe and the Arctic, Pacific, and Indian oceans. 2,896,700,000; ab. 16,000,000 sq. mi. (41,440,000 sq. km). * * * I Largest continent on Earth. It is bounded by the Arctic Ocean, the Pacific Ocean …   Universalium

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• American Indians —     American Indians     † Catholic Encyclopedia ► American Indians     GENERAL     When Columbus landed on the island of San Salvador in 1492 he was welcomed by a brown skinned people whose physical appearance confirmed him in his opinion that… …   Catholic encyclopedia

• water — As designating a commodity or a subject of ownership, this term has the same meaning in law as in common speech; but in another sense, and especially in the plural, it may designate a body of water, such as a river, a lake, or an ocean, or an… …   Black's law dictionary

• phoenix — /fee niks/, n., gen. Phoenicis /fee nuy sis, nee / for 2. 1. (sometimes cap.) a mythical bird of great beauty fabled to live 500 or 600 years in the Arabian wilderness, to burn itself on a funeral pyre, and to rise from its ashes in the freshness …   Universalium