When the atmospheric chemist Paul Crutzen and the limnologist Eugene F. Stoermer introduced the term Anthropocene in 2000, they kicked off a scientific debate that quickly gained momentum and is now being negotiated across a wide range of disciplines. Established boundaries between traditional disciplinary cultures of knowledge production are blurring, which forces the actors involved to step out of their arenas and to negotiate with the other groups of actors about securing evidence. The respective evidence practices come under pressure to legitimize and are renegotiated in the inter- and transdisciplinary space. Fabienne Will illuminates the Anthropocene debate as a trading zone , in which not only central questions about the present and future of humanity on earth, but also fundamental understandings of the production and safeguarding of evidence are negotiated.