Social and political entrepreneur, writer and architect, and maker of change. Chief Optimist, Witter Ventures. Executive Director, WithoutViolence. Has counselled CEOs, Nobel Peace Prize winners, top politicians, governments, philanthropists, scientists, and academics globally. Member of for-profit and not-for-profit boards. Frequent public speaker and moderator, including with NPR, MSNBC, CBS, World Economic Forum, TEDWomen, Clinton Global Initiative, and The Skoll World Forum. 2004, contestant, "American Candidate", a Showtime reality show. Co-Author, The She Spot: Why Women are the Market for Changing the World and How to Reach Them. Recipient of awards. Expertise: intersections of women, communications, technology, violence prevention, philanthropy, and behaviour change and influence science.