We, as a society, are conscious of the risk of the devastating impacts that could come from climate disruption. In contrast to the absence of public discourse around nuclear conflict since the end of the Cold War, climate has been a subject of intense public debate. Although the danger of the nuclear threat remains undiminished, the proposed $1.7 trillion nuclear modernization program in the US is not a matter of serious debate.It is difficult to compare climate and nuclear threats. The climate catastrophe toward which we are moving, while uncertain in terms of timing and outcomes, is indisputable. We have survived the nuclear danger for seventy years, although we have come close to conflict more frequently than the public realizes.