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Mather, John Cromwell

(Encyclopedia)Mather, John Cromwell, 1946–, American astrophysicist, b. Roanoke, Va., Ph.D. Univ. of California, Berkeley, 1974. He has been a researcher at NASA's Goddard Space Flight Center in Greenbelt, Md., s...

Livia Drusilla

(Encyclopedia)Livia Drusilla lĭvˈēə dro͞osĭlˈə [key], c.55 b.c.–a.d. 29, Roman matron; mother of the Roman emperor Tiberius. She first married Tiberius Claudius Nero. Tiberius was his son. In 38 b.c., Aug...

Killy, Jean-Claude

(Encyclopedia)Killy, Jean-Claude zhäN-klōd kēlēˈ [key], 1943–, French skier. He grew up at his father's ski resort and began skiing at the age of 3. At 18 he was a senior member of the French national team. ...

Cerf, Vinton Gray

(Encyclopedia)Cerf, Vinton Gray, 1943–, American computer scientist, b. New Haven, Conn., B.S. Stanford, 1965, Ph.D. Univ. of California, Los Angeles, 1972. With Robert Kahn, he is responsible for the design and ...

age grade and age set

(Encyclopedia)age grade and age set, differentiation of social role based on age, commonly found in small-scale societies of North America and East Africa. Age sets are a type of sodality (nonresidential groups tha...

Catton, Bruce

(Encyclopedia)Catton, Bruce, 1899–1978, American historian, b. Petoskey, Mich. He studied at Oberlin College and then entered upon a varied career as a journalist (1926–42) and public official (1942–52). His ...

Tugwell, Rexford Guy

(Encyclopedia)Tugwell, Rexford Guy, 1891–1979, American economist and political scientist, b. Chautauqua co., N.Y., grad. Wharton School, Univ. of Pennsylvania (B.S., 1915; Ph.D., 1922). He taught economics at th...

Randall, John Ernest, Jr.

(Encyclopedia)Randall, John Ernest, Jr., 1924–2020, American ichthyologist, b. Los Angeles, Ph.D. Univ. of Hawaii, Manoa, 1955. A marine taxonomist, he named 30 new genera and hundreds of new species of fish. Par...

Rose, Irwin

(Encyclopedia)Rose, Irwin, 1926–2015, American biochemist, b. Brooklyn, N.Y., Ph.D. Univ. of Chicago, 1952. Rose was on the faculty of Yale Medical School from 1954 to 1963 and a senior member of the Fox Chase Ca...

Groningen, city, Netherlands

(Encyclopedia)Groningen, city, capital of Groningen prov., NE Netherlands. It is an important trade and transportation center. Manufactures include clothing, food pro...