Michael Walzer’s article ‘Political action: the problem of dirty hands’ initiated a new wave of discussion over a persistent problem in moral philosophy: are there situations in which ethical rules must be relaxed so as to bring about a greater good? In this article, we consider whether this ‘dirty hands’ approach may be applied to our current climate crisis. One proposed solution to the problem of global warming is the administration of moral enhancements to the population. Assuming that the administration (...) of moral enhancements is a necessary condition in the prevention of a climate crisis, Parker Crutchfield argues that this procedure ought to be covert. This implies lying to the public, and such dishonesty amounts to immoral behavior. We conclude that despite the severity of global warming, there is no justification for a dirty hands approach. Lying to the public in order to save the planet would probably create bigger problems, and it would ultimately be very counterproductive in trying to save the planet. (shrink)