This article is about the dilemma that global warming poses to us all. Do we vigorously deny that it is happening thereby ensuring that we can continue to nourish our self-interests, prejudices and ideologies? Do we ignore it, or put it to the back of our minds and get on with our lives? Do we accept it is happening and try to do what we can whilst hoping that it won’t be as bad as suggested, or science will find a way around it, or there is still time to tackle the issue? The scientific consensus is clear, by 2030 we must transform our global economies and societies to reduce our CO2 emissions and prevent the increase in global warming rising above 1.5C. Do we embrace the facts or rationalise our way out of making the necessary sacrifices? What about Humanism? It values reason, a rational and evidence-based approach to decision-making so shouldn’t it be leading the charge?