Four science programs at our public urban liberal arts college have struggled to attract and retain majors: physics, environmental studies, geology, and teaching science. The Brooklyn Opportunities in Science and Careers (BOSC) program aims to increase student participation in these majors using a new career-focused strategy to recruit students. Our hypothesis is that by providing capable students with information about employment prospects in diverse science-related careers during the summer before their freshman year, we could increase the total number of majors and graduates in these science departments. Field trips to explore science careers in unanticipated settings and a Career Investigation Project are the core innovations of the BOSC program. Students work in collaborative groups to investigate potential careers, gaining skills important in almost all careers such as teamwork and preparing and delivering presentations. Institutional and program evaluation data indicate that the BOSC program has had a significant positive impact on both the program participants and on the cultures and enrollments in the target departments. (Contains 1 table.)