NWA Democrat-Gazette/DAVID GOTTSCHALK  Emily Lopshire (right) and Cheyenne Hillman (left) explain their sound related science projects Thursday, February 11, 2016, at the annual St. Joseph Catholic School Science Fair in Fayetteville. Students in the sixth through eighth grades created 68 projects in the fields of chemistry, behavioral science and engineering. The students are competing to advance to the Northwest Arkansas Regional Science and Engineering Fair on March 4 at the University of Arkansas.
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