MentorNet, a division of Great Minds in STEM, provides all STEM students, nationwide and in all levels of higher education, with access to mentors who are professionals working in STEM fields. MentorNet’s mission is to foster a prevalent culture of mentoring in science, technology, engineering and mathematics that empowers individuals to persist and succeed in their fields. MentorNet is an award-winning national mentoring organization that positively affects the retention and success of students in STEM fields, particularly but not exclusively women and other under-represented groups. MentorNet's new mentoring service combines the scalable technology of social networks with the social science of mentoring and has launched a strategic growth plan to reach all STEM students across the country. MentorNet's history of service and impact is substantive - 32,000 matches since its launch in 1997 with 92% of their student population obtaining a STEM degree in 70 distinct fields – and 78% of MentorNet's STEM students are women or under-represented minorities.