This chapter is concerned with the prospects for a safe and sustainable environment in a fair and just world. At present, these prospects look bleak. However there are a number of legal developments and ethical principles on which to build, including the European Convention on the Protection of the Environment through Criminal Law, notions of environmental, ecological and species justice, and conceptions of human rights. The chapter considers these in five sections: first providing an overview and exploring the links between human rights and environmental issues, then examining examples of environmental crimes / harms and attempts to regulate or criminalise these, before outlining the development of a Green Criminology and proposals for an international law against ecocide as a framework for addressing this range of challenges. Finally, concluding comments draw attention to debates and directions for discussion and research.