The paper builds on the critique of what Latour (1993) terms the ‘modern constitution’and its configuration of nature as an independent and external entity to human culture and politics. The paper suggests that, firstly, moving beyond the modern constitution to a world of amodern or postnature (Braun, 2004; Hayles, 1999) marks a shift from ontological stability to ontological instability, where ‘nature’is now constituted by merging and emerging ontologies. In this unstable new world order, the paper argues that postnature should be understood as a transient convergence in a context of flow, union, and divergence. This perspective emphasises the role that emotions play in this relationship, arguing that they are both part and product of the transient convergence of postnature.‘Humans’ are now constituted in and with the temporary coincidences that form ‘nature’, and the relational sensibility that is produced through this convergence is vital to fully understand the post-natural world. The paper concludes by suggesting that this postnature can provide new premises for protecting the world of which we are a part.© 2009 Elsevier Ltd. All rights reserved.