We are the first generation capable of determining the habitability of the planet for humans and other species, writes Anthony Cortese in the Foreword. Teachers at every level can play an important role in helping us find a sustainable path. One educator is fond of saying that, The stone age didn t end because of a lack of rocks While there was certainly an abundance of rocks available, stone age peple moved on to a new era because it became possible for them to envision and create a different and more useful way of organizing life. Many believe that we are currently at a similar juncture and can begin to imagine and construct new ways to live on our planet. All who work with sustainability issues realize that it is a community project. We must decide collectively about the earth and its future. As a community be it a geographic, social, academic, or professional community we need to know where to begin, how to collaboratively work, and where to find resources. Most of us belong to communities that are concerned about sustainability issues, but do not have that as their primary mandate, such as a business, a history class, or a civic group. These groups have a tremendous opportunity to incorporate sustainability awareness into their activities. And this volume will help find those opportunities and make the best use of group resources.