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New Castle

(Encyclopedia)New Castle. 1 City (1990 pop. 4,837), New Castle co., N Del., on the Delaware River. Mineral, metal, food, paper, and gypsum products are among its varied manufactures. It is also a major book distrib...

Perak

(Encyclopedia)Perak pāˈrăk [key], state (1991 pop. 1,880,016), 8,030 sq mi (20,798 sq km), Malaysia, central Malay Peninsula, on the Strait of Malacca. Perak is bordered on the N by Thailand. The capital is Ipoh...

Tulsa

(Encyclopedia)Tulsa tŭlˈsə [key], city (2020 pop. 413,066), seat of Tulsa co., NE Okla., on the Arkansas...

Weizmann, Chaim

(Encyclopedia)Weizmann, Chaim khīmˈ vītsˈmän [key], 1874–1952, scientist and Zionist leader, first president (1948–52) of Israel, b. Russia, grad. Univ. of Freiburg, 1899. He lectured in chemistry at the U...

Busan

(Encyclopedia)Busan or Pusan bo͞oˈsän [key], Jap. Fusan, city, extreme SE South Korea, on the Korea Stra...

Bismarck Archipelago

(Encyclopedia)Bismarck Archipelago, volcanic island group, 19,200 sq mi (49,730 sq km), SW Pacific, a part of Papua New Guinea. The group includes New Britain (the largest island), New Ireland, the Admiralty Island...

smog

(Encyclopedia)smog smŏg [key] [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 combustion of coal...

Sofia

(Encyclopedia)Sofia sōfēˈə, sōˈfēə [key], Bulg. Sofiya, city (1993 pop. 1,114,476), capital of Bulgaria, W central Bulgaria, on a high plain surrounded by the Balkan Mts. It is Bulgaria's chief industrial, ...

pharming

(Encyclopedia)pharming färˈmĭng [key], the use of genetically altered livestock, such as cows, goats, pigs, and chickens, to produce medically useful products. In pharming, researchers first create hybrid genes ...

sap

(Encyclopedia)sap, fluid in plants consisting of water and dissolved substances. Cell sap refers to this fluid present in the large vacuole, or cell cavity, that occupies most of the central portion of mature plant...