The abuse of the synthetic drug known as methamphetamine has become a top crime problem in the United States, and now a global epidemic. In this audio lecture, part of the Stanford Social Innovation Review's conference on evaluation, IT leader and philanthropist Thomas Siebel discusses the nature of meth addiction as well as the efforts of the Meth Project, a large-scale prevention program aimed at reducing first-time meth use through public service messaging, public policy, and community outreach.