What Is Sustainability?

A question posed and posted by GreenBiz?s Joel Makower a little over a month ago asks, ?What is sustainability anyway?? Admittedly, it?s a question we have asked on the Going Green blog at various times over my three-year tenure and whilst it is easy to come up with abstract theories, and perhaps loosely defined mission statements, identifying concrete steps has tended to be elusive. But perhaps even more importantly, how do we get people excited about sustainability?