Google Book Tool Tracks Cultural Change With Words : NPR - 0 views
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Ryan Catalani on 20 Dec 10See also the graphs at the bottom of the page. "Perhaps the biggest collection of words ever assembled has just gone online: 500 billion of them, from 5 million books published over the past four centuries... The words make up a searchable database that researchers at Harvard say is a new and powerful tool to study cultural change... You can, for instance, type in a word or a short phrase, and the database produces a graph - a curve that traces how often an author used those words every year since 1800."