helium-bearing natural gas
31Mud volcano — A series of mud volcanoes in Gobustan, Azerbaijan …
32Calendar of 2003 — ▪ 2004 January So long as there is a single Brazilian brother or sister going hungry, we have ample reason to be ashamed of ourselves. Lula, in his inaugural address as president of Brazil, January 1 January 1 The Socialist Lula (Luiz… …
33Geography of Texas — The geography of Texas is diverse and far reaching in scope. Occupying about 7% of the total water and land area of the U.S.,[1] it is the second largest state after Alaska, and is the southernmost part of the Great Plains, which end in the south …
34Gold — This article is about the metal. For the color, see Gold (color). For other uses, see Gold (disambiguation). platinum ← gold → mercury …
35cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …
36balloon flight — ▪ aviation Introduction passage through the air of a balloon that contains a buoyant gas, such as helium or heated air, for which reason it is also known as lighter than air free flight. Unmanned balloons have been used to carry meteorological… …
37dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or …
38nuclear reactor — Physics. reactor (def. 4). Also called nuclear pile. [1940 45] * * * Device that can initiate and control a self sustaining series of nuclear fission reactions. Neutrons released in one fission reaction may strike other heavy nuclei, causing them …
39radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …
40Star — For other uses, see Star (disambiguation) …
