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Vidal de la Blache, Paul

(Encyclopedia)Vidal de la Blache, Paul pōl vēdälˈ də lä bläsh [key], French geographer, 1845–1918, the father of French human geography. He was educated at the École Normale Supérieure, Paris, and had an...

histone

(Encyclopedia)histone hĭsˈtōn [key], any of a class of protein molecules found in the chromosomes of eukaryotic cells. They complex with the DNA (see nucleic acid) and pack the DNA into tight masses of chromatin...

geochemistry

(Encyclopedia)geochemistry, study of the chemical changes on the earth. More specifically, it is the study of the absolute and relative abundances of chemical elements in the minerals, soils, ores, rocks, water, an...

miracle

(Encyclopedia)miracle, preternatural occurrence that is viewed as the expression of a divine will. Its awe and wonder lie in the fact that the cause is hidden. The idea of the miracle occurs especially with the evo...

Nicolson, Sir Harold

(Encyclopedia)Nicolson, Sir Harold, 1886–1968, English biographer, historian, and diplomat, b. Tehran, Iran. Educated at Oxford, he entered the foreign office in 1909, and, until his resignation 20 years later, h...

object-oriented programming

(Encyclopedia)object-oriented programming, a modular approach to computer program (software) design. Each module, or object, combines data and procedures (sequences of instructions) that act on the data; in traditi...

selection

(Encyclopedia)selection. In Darwinism, the mechanism of natural selection is considered of major importance in the process of evolution. Popular formulations sometimes envisage a struggle for existence in which dir...

atonement

(Encyclopedia)atonement, the reconciliation, or “at-one-ment,” of sinful humanity with God. In Judaism both the Bible and rabbinical thought reflect the belief that God's chosen people must be pure to remain in...

Ebadi, Shirin

(Encyclopedia)Ebadi, Shirin shērēn ĕbôdēˈ [key], 1947–, Iranian jurist, author, and human-rights activist. From a family of distinguished jurists, she obtained her law degree (1969) and doctorate (1971) fro...

MacBride, Seán

(Encyclopedia)MacBride, Seán, 1904–1988, Irish statesman, b. Paris. The son of Irish patriot-actress Maude Gonne and revolutionary Major John MacBride, he moved to Ireland after his father was executed as a lead...