Mallory Wills, an 11th grader from Central Lee explains her project on radon levels to judge Tracy DeMoss during the Eastern Iowa Science & Engineering Fair at Lindale Mall in Cedar Rapids on Saturday, March 15, 2014. Students from grades 6-12 presented their science projects with the top EISEF Awards winners and their teachers won trips to the International Science and Engineering Fair. (Justin Torner/Freelance for the Gazette)
