In April 2013, approximately 120 high school girls and their parents gathered at Harvard to hear about the latest applications of 3D printing. Professor Jennifer Lewis, who recently joined the MRSEC at Harvard, was the keynote speaker for a day of career exploration in science in engineering for high school girls from the Boston Metropolitan area and surrounding states. Professor Lewis' talk, which emphasized the many cutting edge applications of 3D printing, from medicine to energy, was the culminating event in a day in which the girls learned about the many career paths open to them in science and engineering fields. The girls visited area universities, meeting with women in technical fields, from the Chief Operating Officer of a company bringing to market an airplane that can be driven on the highway, to women working in computational sciences for development of new materials for energy conversion. The girls had the opportunity to try out hands-on activities in materials science, robotics, and mechanical engineering.