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Popper, Sir Karl Raimund

(Encyclopedia)Popper, Sir Karl Raimund, 1902–94, Anglo-Austrian philosopher, b. Vienna. He became familiar with the Vienna circle of logical positivists (see logical positivism) while a student at the Univ. of Vi...

Swedenborg, Emanuel

(Encyclopedia)Swedenborg, Emanuel swēdˈənbôrg; āmäˈno͞oĕl svāˌdənbōrkˈ [key], 1688–1772, Swedish scientist, religious teacher, and mystic. His religious system, sometimes called Swedenborgianism, is...

radiation sickness

(Encyclopedia)radiation sickness, harmful effect produced on body tissues by exposure to radioactive substances. The biological action of radiation is not fully understood, but it is believed that a disturbance in ...

heroin

(Encyclopedia)heroin hĕˈrəwən [key], opiate drug synthesized from morphine (see narcotic). Originally produced in 1874, it was thought to be not only nonaddictive but useful as a cure for respiratory illness an...

Human Genome Project

(Encyclopedia)Human Genome Project, international scientific effort to map all of the genes on the 23 pairs of human chromosomes and, to sequence the 3.1 billion DNA base pairs that make up the chromosomes (see nuc...

New Guinea

(Encyclopedia)New Guinea gĭnˈē [key], island, c.342,000 sq mi (885,780 sq km), SW Pacific, N of Australia; the world's second largest island after Greenland. Politically it is divided into two sections: the Indo...

Rhodes, Cecil John

(Encyclopedia)Rhodes, Cecil John sĕsˈĭl, rōdz [key], 1853–1902, British imperialist and business magnate. A trip in 1875 through the rich territories of Transvaal and Bechuanaland apparently helped to insp...

growth hormone

(Encyclopedia)growth hormone or somatotropin sōmătˌətrōˈpən [key], glycoprotein hormone released by the anterior pituitary gland that is necessary for normal skeletal growth in humans (see protein). Evidence...

arrhythmia

(Encyclopedia)arrhythmia ārĭᵺˈmēə [key], disturbance in the rate or rhythm of the heartbeat. Various arrhythmias can be symptoms of serious heart disorders; however, they are usually of no medical significan...

Schiavo case

(Encyclopedia)Schiavo case, the legal battles over the guardianship and rights of Theresa Maria Schindler Schiavo (1963–2005). Terri Schiavo was incapacitated and hospitalized in 1990, after she collapsed when he...