Sustainability
Most people are aware that "the world" (the sum of planetary environmental systems) is changing in ways that are already generating dramatic and largely negative consequences for "the world" (Earth as the home of Life) and that the trajectories of change presage even greater instability. Since the blossoming of environmentalism a half-century ago, those most concerned and involved in responding to these challenges have recognized that a robust engagement with law is required for reversing or mitigating these changes.