Over the last decade or so, Steve has given more than one hundred public presentations.  These include keynote addresses at conferences in Australia, Austria, Chile, France, Italy, the Netherlands, Norway, Romania, Spain, Sweden, Switzerland, the United Kingdom and the United States, as well as invited talks at numerous universities, including Australian National University, Cambridge University, Harvard University, Oxford University, Princeton University, Stanford University, University of Chicago, University of Edinburgh, University of Graz, University of Notre Dame, University of Oslo, University of Sydney, University of Utrecht, and University of Vienna.

In 2019-20, Steve gave keynote addresses at the Wittgenstein conference (Austria) and the Cerisy conference (France). He also presented invited talks at the University of Bergen (Norway), University of Exeter (UK), University of Reading (UK), University of Vienna (Austria) and to the National Academy of Sciences working group on governing geoengineering (Stanford).

In 2021, he presented the Academy Lecture for Humanities and Social Sciences at the Norwegian Academy of Science and Letters, and the Alan Saunders Lecture in Public Ethics at the Australasian Association for Philosophy, which was broadcast nationally by Australian Public Radio. He also gave the ExPhil Lecture at the University of Oslo, and the Bodaken Lecture at Colorado State University, and presented papers at various venues, including Edinburgh, Exeter, Graz, Reading, Pisa, Princeton, and Stockholm.

In the summers of 2019 and 2021, he was Leverhulme Visiting Professor at the University of Reading (UK), supported by the Leverhulme Trust, and also a Visiting Fellow at the Uehiro Centre for Practical Ethics at the University of Oxford.