I begin with a central and profound insight of the feminist and cultural studies of science: that nature and culture, science and society, and biology and the social are not binary opposites. Rather, they are co-constituted and co-produced. We need to go beyond the idea of nature shaping culture and culture shaping nature and move toward an understanding where nature and culture are seen as inextricably interconnected and indeed as constitutive of each other. Instead of the binary formulation of nature and culture, we should begin thinking in terms of Donna Haraway’s (1999) memorable phrase naturecultures. There is no nature and culture, only naturecultures. I use the field of invasion biology as an illustrative case in point. It will come as no surprise to readers of this volume that we live in times of numerous environmental crises, in particular perceived crises of our ecosystems. While there are many sites and sources of the problems that have been identified, one prominent source in the biological and popular literature is that of invasive species. It is argued that some exotic and foreign species are entering the nation, growing and reproducing aggressively and in the process destroying native habitats and landscapes. The central problem is seen as a proliferation of exotic and foreign species, and the solution proposed is the eradication of these species in order to save native ecosystems. As Preston and Williams (2003) sum up: “Invasive alien species are emerging as one of the major threats to sustainable development, on a par with global warming and the destruction of life support systems.” Considered as biological “pollutants,” invasive species are seen as a major threat (Simberloff 2000) and a costly “catastrophe” for native biodiversity (McNeely 2001). They are seen by the National Wildlife Foundation as a “major threat” to biodiversity, second only to habitat loss and degradation, and the Minnesota Department of Natural Resources has similarly described them as a “major cause” of biodiversity loss throughout the world. Politicians and environmental activists alike call for immediate action (Carlton 1999).