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Valletta

(Encyclopedia)Valletta vəlĕtˈə [key], city (1994 est. pop. 9,129), capital of Malta, NE Malta. It is strategically located on a rocky promontory between two deep harbors. Dockyards line the harbors and employ m...

Castle, Vernon, and Irene Foote

(Encyclopedia)Castle, Vernon (Vernon Castle Blythe) 1887–1918, and Irene Foote, 1893–1969, husband-and-wife dance team. Vernon Castle was an English dancer, who studied civil engineering before turning to the s...

Sinuiju

(Encyclopedia)Sinuiju sēnˈo͝oˈēˈjo͞o [key], Jap. Shingishu, city (1993 pop. 326,011), W North Korea, on the Yellow Sea (or West Sea) at the mouth of the Yalu River. A main northern gateway to Korea, it devel...

Sloane, T(homas) O'Conor

(Encyclopedia)Sloane, T(homas) O'Conor, 1851–1940, American scientist, lecturer, writer, and periodical editor, Ph.D. Columbia, 1876. Sloane was a member of the editorial staff of the Scientific American, where h...

bionics

(Encyclopedia)bionics, the study of living systems with the intention of applying their principles to the design of engineering systems. Drawing on interdisciplinary research in the mechanical and life sciences, bi...

methane

(Encyclopedia)methane mĕthˈān [key], CH4, colorless, odorless, gaseous saturated hydrocarbon; the simplest alkane. It is less dense than air, melts at −184℃, and boils at −161.4℃. It is combustible and c...

MacMillan, Donald Baxter

(Encyclopedia)MacMillan, Donald Baxter, 1874–1970, American arctic explorer, b. Provincetown, Mass., grad. Bowdoin College, 1898, and studied at Harvard. After a decade of teaching, he went on the expedition (190...

gadolinium

(Encyclopedia)gadolinium gădəlĭnˈēəm [key], metallic chemical element; symbol Gd; at. no. 64; at. wt. 157.25; m.p. 1,312℃; b.p. 3,233℃; sp. gr. 7.898 at 25℃; valence +3. Gadolinium is a malleable, ducti...

Albuquerque

(Encyclopedia)Albuquerque ălˈbəkûrˌkē [key], city (2020 pop. 564,559), seat of Bernalillo co., W central N.Mex., on the upper Rio Grande; inc. 1890. The largest city in the state,...

toxic waste

(Encyclopedia)toxic waste is waste material, often in chemical form, that can cause death or injury to living creatures. It usually is the product of industry or commerce, but comes also from residential use, agric...