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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…

DK Science: Evolution

SPECIALIZED FOR SURVIVALDUNKLEOSTEUSEVOLUTION OF THE ELEPHANTNATURAL SELECTIONADAPTATIONFIND OUT MOREThe process by which changes occur in living things over time is known as evolution. The…

Selected Country Musicians

Hank Williams See also Notable Women Musicians and Dancers Notable African-American Musicians Notable African-American Visual and Performing Artists Asian American Artists and…

DK Human Body: Hormones

HOW DO HORMONES WORK? FIND OUT MOREHormones are control chemicals that trigger major changes in the body. They control many important functions, including body chemistry, growth and sexual…

Notable Boxers

See also Muhammad Ali: Timeline, Biography, and Stats People in the News Recent Obituaries Related Links Boxing: Encyclopedia Boxing Summary Olympics: Boxing Biographies…

Selected Golfers

Tiger Woods See also Tiger Woods Timeline People in the NewsRecent Obituaries Related Links Golf Summary Biographies by Category Cotton, Henry, golfer Daly,…

Donen, Stanley

(Encyclopedia) Donen, Stanley, 1924–2019, American film director, choreographer, and producer, b. Columbia, S.C. He is best known for directing some of Metro-Goldwyn-Mayer's finest musicals. In 1940…

emphysema

(Encyclopedia) emphysemaemphysemaĕmfĭsēˈmə [key], pathological or physiological enlargement or overdistention of the air sacs of the lungs. A major cause of pulmonary insufficiency in chronic…