Quentin Meillassoux's call for realism is a call for a new interest in the Earth as un-correlated being in philosophy. Unlike Meillassoux, Martin Heidegger has not been criticized for being a correlationist. To the contrary, his concept of the Earth has to be understood as un-correlated being, as it is opposed to the world as correlated being. First, this interpretation of Heidegger's concept of the Earth solves various problems of interpretation that are present in the secondary literature. Second, Heidegger's characterization of the Earth in the end remains unthought in his work. Third, in the age of global warming Meillassoux's call for realism can help to conceive planet Earth as the ontic-ontological origin of the Heideggerian strife between Earth and world.