Japan's nuclear crisis takes most dangerous turn yet

AAP, Reuters & Yahoo!7 March 17, 2011NEW YORK (Reuters) - Japan's nuclear crisis may have taken its most dangerous turn yet after a U.S. official said one of the pools containing highly radioactive spent fuel rods at the stricken plant had run dry.One nuclear expert said that there was now even a possibility that the disaster may approach the extent of the Chernobyl accident, the worst ever in