 The call for a “basic change of values” in connection to the environment (a call that could be interpreted in terms of either instrumental or intrinsic values) reflected a need for the development of environmental ethics as a new sub-discipline of philosophy. The aim of facing up to the challenge of limited resources was fostered subsequently by studies of the growing human “ecological footprint” on the earth (Rees 1992, Wackernagel et al. 2018) and by the exploration of “planetary boundaries” and the concept of a “safe operating space for humanity” (Rokström et al. 2009, Biermann and Kim 2020).