Columbia Encyclopedia

(Encyclopedia)  CE5 Saturn and its ring system as seen from Earth Saturn, in astronomy, 6th planet from the sun. Saturn has 82 confirmed natural satellites, many of which have not been named. Five of the discov...

(Encyclopedia) Detroit dĭtroitˈ [key], city (2020 pop. 639,111), seat of Wayne co., SE Mich., on the Detro...

(Encyclopedia) fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and coal and sometime...

(Encyclopedia) sodium chloride, NaCl, common salt. Salt is important in many ways. It is an essential part of the diet of both humans and animals and is a part of most animal fluids, such as blood, sweat, and te...

(Encyclopedia) El Niño–Southern Oscillation (ENSO) ĕl nēnˈyō [key], large-scale climatic fluctuation of the tropical Pacific Ocean and the overlying atmosphere. The El Niño [Span.,=the child] is the South Am...

(Encyclopedia) Los Angeles lôs ănˈjələs, lŏs, ănˈjəlēzˌ [key], city (1990 pop. 3,485,398), seat of Los Angeles co., S Calif.; inc. 1850. A port of entry on the Pacific coast, with a fine harbor at San Ped...

(Encyclopedia)  CE5 A professional football field. College teams use a similar field except that the inbound lines are 53 ft 4 in. (16.25 m) from the sidelines. football, any of a number of games in which two opp...

(Encyclopedia) Philadelphia, city (2020 pop. 1,603,797), coextensive with Philadelphia co., SE Pa., on the Delaware River c.100 mi (160 km) upstream at the influx of t...

(Encyclopedia) mosquito məskēˈtō [key], small, long-legged insect of the order Diptera, the true flies. The females of most species have piercing and sucking mouth parts and apparently they must feed at least on...

(Encyclopedia) Ohio, river, 981 mi (1,579 km) long, formed by the confluence of the Allegheny and Monongahela rivers in SW Pa., at Pittsburgh; it flows northwest, then generally southwest to enter the Mississippi Ri...