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The topics for this month's issue are: (1) ''Translating Vision into Reality''; (2) ''A Question of Quarks''--Scientists may have created a quark-gluon plasma, a form of matter never before seen on Earth; (3) ''Island Paradise Regained''--Forty-five years after atmospheric nuclear testing ceased, Livermore's environmental scientists continue to develop ways of assessing and limiting radiation exposure associated with resettlement efforts in the Marshall islands; and (4) ''Understanding Cells in a New Way with Three-Dimensional Models''--Researchers are taking a first step toward a comprehensive, three-dimensional model of a living cell by simulating calcium ions moving within and between epithelial cells.