The middle schoolers belting out tunes in the school cafeteria and spooning in mouthfuls of chicken teriyaki and broccoli actually get that they are part of a potentially life-saving science experiment. As the eighth grade class at Aurora Science & Tech Middle School joins in a chorus of “So, before you go,” gloved researchers from the nearby Colorado School of Public Health are set up in the corner of the cafeteria collecting nasal swabs and face masks with the power to detect the coronavirus.