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Greene, Graham

(Encyclopedia) Greene, Graham (Henry Graham Greene), 1904–91, English novelist and playwright. Although most of his works combine elements of the detective story, the spy thriller, and the…

pearl, gem

(Encyclopedia) pearl, hard, rounded secretion formed inside the shell of certain mollusks, used as a gem. It is secreted by the epithelial cells of the mantle, a curtain of tissue between the shell…

Ur

(Encyclopedia) UrUrûr [key], ancient city of Sumer, S Mesopotamia. The city is also known as Ur of the Chaldees. It was an important center of Sumerian culture (see Sumer) and is identified in the…

Famous Trains: Asia and Australia

by Mike Rozett Orient Express 1883 In 1883, the Orient Express began service from Paris to Istanbul, crossing six countries with the cooperation of ten different railroads. The train…

Research Scientist 2

Daniel J. Schneider Tell us about your work---what do you do? I am a research scientist employed by a biotechnology company developing…

Librarian--International Health

Gretl Cox Tell us about your work---what do you do? I am a librarian and work in a "special library", a library that specializes in a certain subject. Mine is a…

Geometry: Isometries

IsometriesGeometryTransformationsIsometriesDilationsSymmetry The word isometry is used to describe the process of moving a geometric object from one place to another without changing its size or…

LGBT Pride Month: Origins and Importance

Pride month, celebrated every year in June, serves as a tribute and a show of honor to members of the LGBTQ community and others involved in the stonewall riots of June 28, 1969, in Manhattan. It is…