On 15 September 2009 a one-day conference was held at the University of Oxford entitled “Invasions and Transformations”. The participants of this meeting examined and discussed the histories of alien species and biological invasions in different parts of the world. This podcast will highlight two papers presented at this meeting. Glenn Sandiford, a postdoc researcher at the University of Illinois, will talk about his paper entitled “Nineteenth century narratives on the introduction of carp in America”. The second guest on the podcast is Bernadette Hince of the Australian National University who presented a paper examining the history and impacts of invasive species on sub-Antarctic islands. The podcast ends with a brief summary of the themes and research issues that had emerged at the end of the conference.