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**FILE** A physicist explains the ATLAS experiment on a board May 20, 2011, at the European Center for Nuclear Research (CERN) outside Geneva. The illustration shows what the long-presumed Higgs boson particle is thought to look like. (Associated Press)
Photo by: Anja Niedringhaus
**FILE** A physicist explains the ATLAS experiment on a board May 20, 2011, at the European Center for Nuclear Research (CERN) outside Geneva. The illustration shows what the long-presumed Higgs boson particle is thought to look like. (Associated Press)

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Best combat rifles of all time

A combat rifle is a military service rifle that fires a full-power rifle cartridge, a mainstay of every modern army in the world. See the best combat rifles ever made.