 The idea of moral progress features prominently in reflection on the history and future of moral thought and practice. While it may be difficult to assess whether a society has made moral progress on the whole over some period, it is not hard to find plausible examples of progress along particular dimensions. The elimination of the Atlantic slave trade, for example, and the development of the modern human rights movement are compelling examples of widespread moral progress. There are also plausible avenues to further progress through improved conformity with legitimate moral norms and through improvements in moral concepts, reasoning, and understanding. We might then wonder: what are the drivers of such moral progress (and likewise of moral regression when it occurs)? And how might evolutionary biology bear on the prospects and strategies for achieving moral progress (and avoiding moral regression)? Allen Buchanan and Russell Powell take up these issues in wide-ranging theoretical work that potentially has practical implications for a number of current social and political problems, as discussed below (Buchanan and Powell 2018, 2019; Buchanan 2020; see also the symposium discussion of the 2018 book in Analyse &amp; Kritik 41(2), 2019).