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smog
(Encyclopedia) smog smŏg [smoke+fog], dense, visible air pollution. Smog is commonly of two types. The gray smog of older industrial cities like London and New York derives from the massive…January 2017: China Issues First-Ever Smog Red Alert
U.S. News | Disasters & Science News Here's a slideshow depicting the major world news events of January 2017. 1. Deadly Attack at Istanbul Nightclub 2. French Law: Right to Disconnect 3.…Palomar Mountain
(Encyclopedia) Palomar Mountain păl´ōmär, peak, 6,126 ft (1,867 m) high, S Calif., NE of San Diego, in Cleveland National Forest. It is the site of the Palomar Observatory, operated by the California…air pollution
(Encyclopedia) air pollution, contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health. The major sources of air…temperature inversion
(Encyclopedia) temperature inversion, condition in which the temperature of the atmosphere increases with altitude in contrast to the normal decrease with altitude. When temperature inversion occurs…nitric oxide
(Encyclopedia) nitric oxide or nitrogen monoxide, a colorless gas formed by the combustion of nitrogen and oxygen as given by the reaction: energy + N2 + O2 → 2NO; m.p. −163.6°C;; b.p. −151.8…diesel engine
(Encyclopedia) diesel engine, type of internal-combustion engine invented by the German engineer Rudolf Diesel and patented by him in 1892. Although his engine was designed to use coal dust as fuel,…smoke
(Encyclopedia) smoke, visible gaseous product of incomplete combustion. Smoke varies with its source, but it usually comprises hot gas and suspended particles of carbon and tarry substances, or soot…carbon monoxide
(Encyclopedia) carbon monoxide, chemical compound, CO, a colorless, odorless, tasteless, extremely poisonous gas that is less dense than air under ordinary conditions. It is very slightly soluble in…Denver
(Encyclopedia) Denver, city (1990 pop. 467,610), alt. 5,280 ft (1,609 m), state capital, coextensive with Denver co., N central Colo., on a plateau at the foot of the Front Range of the Rocky Mts.,…Trending
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