Why media reporting on discussion papers can lead to manipulated science

During this week discussions on twitter and on the blogs focused on a discussion paper by James Hansen et al in Earth System Dynamics Discussions. The paper forms part of a legal case in the US and basically states that the current and expected warming over the next decades is unprecedented since the last interglacial. In this context the Guardian has run an article on the paper. While they state that the science is not yet peer-reviewed, the authors have run a series of interviews and comments, which is usually happening only when a paper is actually published. As usual I refrain in this blog from commenting on climate politics, but as I have written my PhD on scientific publication processes I would like to focus here on the implications of the media scrutiny within the discussion paper phase of a scientific publication. Continue reading