A member of Sustainability Frontiers is a person fully engaged with its activities and decision-making processes (and possessing full voting rights at meetings). So far, there are five members. It is possible to apply for full membership according to membership criteria (see Internal Workings). In most cases, however, successful applications for membership follow from active engagement with the organization over a period of time by being involved in an ongoing partnership or project or through a period of close engagement with Sustainability Frontiers as an associate member. While present members of Sustainability Frontiers are Canada and UK-based, we welcome expressions of interest in membership from educators around the world. See Members.