Environmental ethics is concerned with our duties to the world – natural or built – in which we operate. In particular, it examines individual and collective reasons and means for mitigating the impacts we have on other animal species as well as on the natural and built environment. It also addresses the ecological challenges that need to be overcome to long-term human life. The scientific evidence shows that this issue should be at the center of all public deliberations. To date, governments, business, academia and the media have largely underestimated its importance. The researchers of this axis intend to remedy this deficiency by adopting an interdisciplinary approach (ethics, human geography, primatology, etc.) which alone makes it possible to grasp the complexity of ecological issues and sustainable development.