Columbia Encyclopedia

(Encyclopedia) Young, Charles Augustus, 1834–1908, American astronomer, b. Hanover, N.H., grad. Dartmouth, 1853. He discovered the reversing layer of the solar atmosphere and proved the gaseous nature of the sun's...

(Encyclopedia) Thwing, Charles Franklin twĭng [key], 1853–1937, American educator and Congregational clergyman, b. New Sharon, Maine, grad. Harvard, 1876, and Andover Theological Seminary, 1879. Until 1890 he ser...

(Encyclopedia) O'Connor, Sandra Day, 1930–2023, U.S. lawyer and associate justice of the U.S. Supreme Court (1981–2006), b. El Paso, Tex. Graduating from Stanford ...

(Encyclopedia) Homeland Security, United States Department of (DHS), executive department of the federal government charged with protecting the security of the American homeland as its main responsibility. Its prima...

(Encyclopedia) Kitt Peak National Observatory, astronomical observatory located southwest of Tucson, Ariz.; it was founded in 1958 under contract with the National Science Foundation and is administered by the Assoc...

(Encyclopedia) Pacific Remote Islands Marine National Monument, c.490,000 sq mi (1,260,000 sq km), central Pacific Ocean; est. 2009. The monument comprises the waters and reefs surrounding seven islands and atolls, ...

(Encyclopedia) Martin, François Xavier fräNswäˈ zävyāˈ märtăNˈ [key], 1762–1846, American jurist, b. Marseilles, France. He emigrated to the United States (c.1786) and was admitted to the North Carolina ...

(Encyclopedia) Mishustin, Mikhail Vladimirovich, 1966–, Russian economist and political leader. Trained in systems engineering and economics, he was Russia's deputy tax minister (1998–2004), then worked for gove...

(Encyclopedia) U.S. Customary System of weights and measures: see English units of measurement. ...

(Encyclopedia) British Imperial System of weights and measures: see English units of measurement. ...