Sarah Kearney found her mission right out of high school. That summer, a wealthy family asked her to help launch a philanthropy focused on fighting climate change. She’d so impressed Arunas Chesonis, who made his fortune in telecommunications, during her internship at his company that he promised her the job once she graduated from UVA. Seventeen years later, Kearney has not only mastered the skills needed to run a charitable organization and a venture capital fund worth around $50 million, she’s pioneered a new way of financing clean technology startups and emerging technologies.