Science and technology

Associated Press
FILE - This file photo provided by the University of Texas at Arlington Library shows an image of a poster used for promotional efforts during the 1940 Census. Interest in the newly released 1940 U.S. census is so great that the government website with the information was nearly paralyzed shortly after the records became available to the public for the first time on Monday, April 2, 2012. (AP Photo/UTA Library via The Fort Worth Star-Telegram)

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