Nancy Cianchetta is moving back and forth between adjoining lab rooms, where about a dozen fifth-to-seventh-graders seem oblivious to the made-to-order July weather outside. At benches, students chatter as they rig wind-powered winches, tweaking the angles of the vanes. Cianchetta, an Everett High School biology teacher, strides confidently through the patches of minor turbulence, expertly […]