With its landmark decision on climate protection two years ago, the Federal Constitutional Court took the legal consideration of the consequences of climate change to a completely new level. The legal concept of intertemporal safeguarding of freedom that characterised the decision should be applied to the urgent problem of species extinction or biodiversity loss, especially since the Convention on Biological Diversity already emphasises the “importance of biological diversity for evolution and for maintaining life-sustaining systems of the biosphere” in its preamble. It is true that there is (still) a lack of scientific models in this area that would enable a clear quantification of human activities that are still or no longer acceptable. However, this merely makes the transfer more complex, but does not categorically rule it out.