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The Academy Awards

Find everything you need to know about the 87th Academy Awards. Read biographies of the nominees as well as past hosts of the show. Check out Oscar trivia, quizzes and features while you…

abrasive

(Encyclopedia) abrasive, material used to grind, smooth, cut, or polish another substance. Natural abrasives include sand, pumice, corundum, and ground quartz. Carborundum (silicon carbide) and…

Moore, Mary Tyler

(Encyclopedia) Moore, Mary Tyler, 1936–2017, American actress, b. Brooklyn, N.Y. Although she began her career as a dancer, Moore's success blossomed with her roles on television, first in small…

Lang Lang

(Encyclopedia) Lang Lang, 1982–, Chinese virtuoso pianist. A child prodigy, he studied at the Central Music Conservatory, Beijing, and the Curtis Institute, Philadelphia. Noted for the romantic,…

Carver, George Washington

(Encyclopedia) Carver, George Washington, 1864?–1943, American agricultural chemist, b. Diamond, Mo., grad. Iowa State College (now Iowa State Univ.; B.S., 1894; M.A. 1896). Born a slave, he later,…

Apollo 11 - Anniversary

Apollo 11July 20 marks the anniversary of man's first walk on the moon by Ricco Villanueva Siasoco How many movies, songs, anecdotes—even clichés—have sprung from humanity's first landing on the…

Moon Walks

Twelve astronauts have walked on the moon, the last in 1972. Here are the names of those astronauts listed chronologically by the date of their walk. July 20, 1969—Apollo 11Neil Armstrong Edwin “…

DK Science: Minerals

MINERAL PROPERTIES MINERALS IN ROCK CRYSTALS FIND OUT MORE Minerals are the materials that make up the rocks of the Earth’s crust. Among thousands of different minerals, only a few,…

DK Science: Solids

CHANGING SHAPESHAPE MEMORY METALStretchSTRENGTHCRYSTALLINE STRUCTUREFIND OUT MORESolids are one of the three states of matter and, unlike liquids or gases, they have a definite shape that is not…