This undated handout graphic provided by Fermilab in Chicago shows a proposed particle physics project that would shoot an invisible beam of neutrinos from Fermilab in Chicago to an old mine in South Dakota where a detector would look for it. The U.S. should build a billion-dollar project to beam ghostlike neutrinos 800 miles underground from Chicago to South Dakota in the hopes of understanding the plentiful but enigmatic fundamental particle that zips right through us and changes its nature at will, a panel of experts told the federal government. (AP Photo/Fermilab)
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