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Timeline: Video Games | Part II: 1975-1984

Timeline: Video GamesPart II: 1975-1984 by Amanda Kudler 1975 1978 1981 1983 Next: 1985-1995 1975 Atari's Pong is released with help from Sears Roebuck, which finances the production of 150,000…

Timeline: Video Games | Part III: 1985-1995

Timeline: Video GamesPart III: 1985-1995 by Amanda Kudler 1985 1986 1989 1991 1993 1994 1995 Next: 1996-present 1985 The popular game Tetris is developed by Russian programmer Alex Pajitnov. It…

Timeline: Video Games | Part IV: 1995-present

Part IV: 1995-present by Amanda Kudler 1995 1996 1997 1998 1999 2000 2001 2004 2005 2006 2007 2008 1995 Sony brings the PlayStation to the U.S. and sells the console for $299. Nintendo…

DK Science: Health

EXERCISEHYGIENEDIETFIND OUT MOREMany factors play a part in keeping your body and mind in good health. These include taking plenty of EXERCISE, eating a healthy DIET, and observing some…

Measuring Body Mass

Grain products, vegetables, and fruits are key parts of a varied diet. They are emphasized in this guideline because they provide vitamins, minerals, complex…

compact disc

(Encyclopedia) compact disc (CD), a small plastic disc used for the storage of digital data. As originally developed for audio systems, the sound signal is sampled at a rate of 44,100 times a second…

Clairton

(Encyclopedia) Clairton, city (2020 pop. 6,475), Allegheny co., SW Pa., an industrial suburb of Pittsburgh, on the Monongahela River; settled 1770, inc…