Science and technology

Associated Press
FILE - In this , Jan. 12, 2010, file photo, a Volkswagens are displayed at the North American International Auto Show in Detroit. Hundreds of thousands of buyers and car fans are expected to crowd Detroit’s North American International Auto Show from Jan. 14-27, 2013. Some 800,000 visitors are expected to descend on the city’s 18-acre Cobo Center, where more than 500 cars and trucks will be on display.  (AP Photo/Paul Sancya, File)

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