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The History of the Crossword Puzzle In 1913, it was a "word-cross"; in ancient Rome, a word square by Christine Frantz Do a kids' crossword puzzle on Factmonster! On Dec. 21, 1913…
Society, Culture, and Scholarship Confucius Biographies by CategoryArts and Entertainment Business, Philanthropy, and Labor Politics and Government Science and…
Adopting a cat? Make the Right Choice! You may have heard the saying, "You own a dog, you feed a cat." It's true that cats value their independence a bit more than their canine counterparts…
Shake It Up: MixturesChemistryElements, Compounds, and MixturesPure SubstancesShake It Up: MixturesColloids: Somewhere in BetweenSeparating Mixtures Mixtures are materials that contain more than…