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bioethics

(Encyclopedia)bioethics, in philosophy, a branch of ethics concerned with issues surrounding health care and the biological sciences. These issues include the morality of abortion, euthanasia, in vitro fertilizatio...

Elsheimer, Adam

(Encyclopedia)Elsheimer, Adam äˈdäm ĕlsˈhīmər [key], 1578–1610?, German painter. After studying in Frankfurt, Munich, and Venice, he settled in Rome and worked for Pope Paul V. He painted small pictures on...

Glenn, John Herschel, Jr.

(Encyclopedia)Glenn, John Herschel, Jr., 1921–2016, American astronaut and politician, b. Cambridge, Ohio. On Feb. 20, 1962, he became the first American and the third person to orbit the earth, circling the glob...

galactosemia

(Encyclopedia)galactosemia gəlăkˌtəsēˈmēə [key], inherited metabolic disorder caused by an enzyme deficiency and transmitted as a recessive trait; it results in the accumulation of the sugar galactose in th...

Keeling, Charles David

(Encyclopedia)Keeling, Charles David, 1928–2005, U.S. geochemist, b. Scranton, Pa., Ph.D. Northwestern Univ., 1954. As a postdoctoral fellow at the California Institute of Technology (1953–56), he developed a s...

lincomycin

(Encyclopedia)lincomycin lĭngˌkōmīˈsĭn [key], antibiotic isolated from bacteria of the genus Streptomyces. Similar in activity to erythromycin, it is effective against most gram-positive organisms including s...

Brown-Séquard, Charles Édouard

(Encyclopedia)Brown-Séquard, Charles Édouard broun-sākärˈ, –sākwärˈ [key], 1817–94, physiologist, b. Mauritius, of French and American parents. He taught at Harvard (1864–68), practiced medicine in Ne...

Cannon, Walter Bradford

(Encyclopedia)Cannon, Walter Bradford, 1871–1945, American physiologist. While still a medical student at Harvard, Cannon was the first to demonstrate (1897) that bismuth could be utilized as a contrast medium in...

Toba

(Encyclopedia)Toba tōˈbä [key], largest lake of Indonesia, 448 sq mi (1,160 sq km), N Sumatra. Situated in a vast volcanic caldera that is 1,475 ft (450 m) deep and was formed by a tremendous eruption some 74,00...

Brookhaven National Laboratory

(Encyclopedia)Brookhaven National Laboratory, scientific research center, at Upton (town of Brookhaven), Long Island, N.Y. It was founded in 1947 by Associated Universities, a management corporation sponsored by ni...