The science of morality may refer to various forms of ethical naturalism grounding morality in rational, empirical consideration of the natural world. It is sometimes framed as using the scientific approach to determine what is right and wrong, in contrast to the widespread belief that "science has nothing to say on the subject of human values".

Ethical naturalism is the meta-ethical view which claims that:Ethical sentences express propositions. Some such propositions are true. Those propositions are made true by objective features of the world. These moral features of the world are reducible to some set of non-moral features.