Science and technology

Associated Press
A woman leaves a shop with a broken window in Chelyabinsk, Russia, on Monday, Feb. 18, 2013,  as part of the local damage after a meteorite exploded over the region on Feb. 15.  A total of 53 pieces of space debris have been brought for analysis to the university in Yekaterinburg, with the largest being about one centimeter in diameter, and the smallest is about one millimeter.  (AP Photo/Boris Kaulin)

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