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  • 51Selenite — This article is about the mineral: for other meanings, see Selenite (disambiguation). Selenite, satin spar, desert rose, and gypsum flower are four varieties of gypsum; all four varieties show obvious crystalline structure. The four crystalline… …

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  • 52Gold — This article is about the metal. For the color, see Gold (color). For other uses, see Gold (disambiguation). platinum ← gold → mercury …

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  • 53environment — environmental, adj. environmentally, adv. /en vuy reuhn meuhnt, vuy euhrn /, n. 1. the aggregate of surrounding things, conditions, or influences; surroundings; milieu. 2. Ecol. the air, water, minerals, organisms, and all other external factors… …

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  • 54Basin, Montana — Infobox Settlement official name = Basin settlement type = CDP nickname = motto = imagesize = 250px image caption = Basin Street image image mapsize = 250px map caption = Location of Basin, Montana mapsize1 = 250px map caption1 = subdivision type …

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  • 55Calendar of 2002 — ▪ 2003 January I will not wait on events while dangers gather. I will not stand by as peril draws closer and closer. The United States of America will not permit the world s most dangerous regimes to threaten us with the world s most destructive… …

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  • 56Asbestos — For other uses, see Asbestos (disambiguation). Fibrous asbestos on muscovite …

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  • 57Zambia — Zambian, adj., n. /zam bee euh/, n. a republic in S Africa: formerly a British protectorate and part of the Federation of Rhodesia and Nyasaland; gained independence 1964; a member of the Commonwealth of Nations. 9,349,975; 288,130 sq. mi.… …

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  • 58Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …

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  • 59List of problems solved by MacGyver — This is a list of problems that have been solved by the fictional character MacGyver from the television series of the same name. (This list is not yet comprehensive.) MacGyver employs his resourcefulness and his knowledge of chemistry,… …

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  • 60De re metallica —   Title page of 1556 edition …

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