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Mohole, Project

(Encyclopedia)Mohole, Project, program proposed in 1957 to drill a hole down to the boundary between the crust and the mantle, known as the Mohorovičić discontinuity at about 4 to 43 mi (7 to 70 km) below the ear...

monitor, type of warship

(Encyclopedia)monitor, type of turreted warship (no longer used) carrying heavy guns, having little draft, and lying low in the water. Monitors were so called from the first of the class, the Monitor, built for the...

Newfoundland, breed of dog

(Encyclopedia)Newfoundland, breed of massive, powerful working dog developed in Newfoundland, probably in the 17th cent., and later perfected in England. It stands from 25 to 28 in. (63.5–71.1 cm) high at the sho...

brass

(Encyclopedia)brass, alloy having copper (55%–90%) and zinc (10%–45%) as its essential components. The properties of brass vary with the proportion of copper and zinc and with the addition of small amounts of o...

Carina

(Encyclopedia)Carina kərēˈnə [key] [Lat.,=the keel], southern constellation, representing the keel of the ancient constellation Argo Navis, or Ship of the Argonauts. Carina contains Canopus, the second brightes...

Vallejo

(Encyclopedia)Vallejo vălāˈhō, –lāˈō, və– [key], city (1990 pop. 109,199), Solano co., W Calif., on San Pablo Bay at the mouth of the Napa River; inc. 1866. It is a port and a trade and processing cente...

Trafalgar, battle of

(Encyclopedia)Trafalgar, battle of trəfălˈgər [key], naval engagement fought off Cape Trafalgar on the SW coast of Spain on Oct. 21, 1805, in which the British fleet under Horatio Nelson won a famous victory ov...

Anthropocene

(Encyclopedia)Anthropocene Epoch, an unofficial term used by scientists to describe a period of time—up to the present—in which humanity has impacted the planet on a global scale. The phrase was fir...

prohibition

(Encyclopedia)prohibition, legal prevention of the manufacture, transportation, and sale of alcoholic beverages, the extreme of the regulatory liquor laws. The modern movement for prohibition had its main growth in...

Clayton-Bulwer Treaty

(Encyclopedia)Clayton-Bulwer Treaty, concluded (Apr. 19, 1850) at Washington, D.C., between the United States, represented by Secretary of State John M. Clayton, and Great Britain, represented by the British plenip...