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71Monadnock Building — U.S. National Register of Historic Places U.S. National Historic Landmark District Contributing Property …
72global warming — an increase in the earth s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. [1975 80] * * * Potential increase in global average surface temperatures resulting from… …
73nuclear 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 …
74Earth 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… …
75Diesel engine — Diesel engines in a museum Diesel generator on an oil tanker …
76Noble gas — Group 18 Period 1 2 He 2 …
77Mir — This article is about the Soviet/Russian space station. For other uses, see Mir (disambiguation). Mir …
78Nissan Skyline GT-R — Manufacturer Nissan Production 1969–1973 1989–2002 Assembly Musashimurayama, Japan …
79Internet forum — The phpBB Internet Forum software package, one of the most popular forum packages …
80Abiogenic petroleum origin — is a largely abandoned hypothesis that was proposed as an alternative to theory of biological petroleum origin. It was relatively popular in the past, but it went largely forgotten at the end of the 20th century after it failed to predict the… …
