Published on Spiked-Online at http://www.spiked-online.com/site/article/10148/

Sir Paul Nurse, the new president of the Royal Society, hasfollowed his predecessors, Martin Rees and Bob May, by making a loud public statement about the climate debate. Nurse claimed in a recent edition of BBC2’s science programme, Horizon, that science is under attack, and that public trust in scientific theories has been eroded. Like his predecessors, however, Nurse fails to understand why partial statements from the president of the Royal Society do more to impede the progress of debate than move it on.

Although it was advertised as a discussion about an ‘attack on science’, the Horizon film was dominated by the climate change debate. In Nurse’s view, the public are less convinced by climate change than they ought to be. This has followed an ‘attack on science’, which Nurse explained in a somewhat one-sided account of the ‘Climategate’ affair, the leaking of thousands of emails from the Climate Research Unit at the University of East Anglia in November 2009. But as ugly, pointless and unpleasant as that affair was for those involved, if there is something to be said about the character of the debate about climate change, it is that raised passions and low tactics are not unique to either putative ‘side’.

The mistake Nurse made in his treatment of the climate debate is to imagine that it is divided over a simple claim that ‘climate change is happening’. It is this polarisation of the debate into simple categories – scientists verses deniers – that obscures the real substance of debate, its context and its nuances. The reality is that disagreements about climate change are matters of degree, not true-or-false. In turn, disagreements about the consequences of climate change and the proper policy response are also matters of degree.

Thus, the debate is multi-dimensional, and controversy exists throughout. But for Nurse, identifying the areas of disagreement and offering up an analysis isn’t the point. Instead, he takes for granted that ‘the science is in’, and wonders why trust in scientific authority seems to have been eroded. One reason for this loss of trust just might be that controversies and other inconveniences are swept aside by the polarisation of the debate, leaving a perception that authoritarian impulses are hiding behind scientific consensus. But to point this out would not fill an episode of Horizon. Instead, after a rather feeble retelling of the consensus, the film showed Nurse going after the deniers, who, he suspects, are responsible for undermining public trust in science.

This crusade took Nurse to the home of outspoken climate sceptic and Telegraph journalist James Delingpole, who disputes the existence of the consensus and its value to science. The film was clearly constructed around this moment, at which Nurse seemingly delivers a coup de grace to the deniers: ‘Say you had cancer, and you went to be treated, there would be a consensual position on your treatment.’ This ‘doctor analogy’ appears to leave Delingpole uncomfortable, and stuck for words: ‘Can we talk about Climategate… I don’t accept your analogy’, he responds.

Whatever the reason for Delingpole’s hesitance, there are many good reasons for not accepting Nurse’s analogy. The most obvious being that the climate is not like the human body; climate change is not like cancer; climate scientists are not like oncologists; and climate-science research institutions are not like hospitals. But worse is the fact that Nurse’s thought experiment defeats its purpose. He’s asking us to believe that there has been an attack on science and that trust in science is being eroded. But if we presume that Delingpole is forced by the analogy to accept that he should trust the consensus formed by scientists, we must conclude that science is not under attack. An ‘attack on science’ would reject both climate change and medicine.

Nurse’s reasoning is that if we’re not scientists, we are not able to follow the complexities of climate science, and so take arguments about the climate on trust. But newspapers, he observed, are full of contradictory messages. ‘Political opinions’ are expressed through ‘lurid headlines’, causing ‘an unholy mix of the media and politics… distorting the proper reporting of science, and that’s a real danger for us if science is to have its proper impact on society’. Perhaps worse, the internet allows ‘conspiracy theories to compete with peer-reviewed science’. The concern here is that trust in the wrong source prevents the feckless public from responding to the correct messages about climate change, sending us all to our doom. Instead, people should trust in science, because unlike the politically driven newspapers, and internet lunatics, its authority ‘comes from evidence and experiment’.

But there is no attack on science. Even climate-change deniers will still take the advice of oncologists, and will still express criticism of climate-change policies in scientific terms. What Nurse fails to recognise is the difference between science as aprocess and science as an institution. The reputation of the former is intact; but, as I’ve argued before here on spiked, scientific institutions undermine their own credibility when they interfere in a one-sided way in such debates, regardless of any effort by ‘deniers’. Then, the members of these institutions resort to making BBC documentaries to wonder out loud why no one trusts them anymore.

Aside from the technical complexity that Nurse describes, and the multiple dimensions to the climate debate that he ignores, there is the context of the climate debate to be considered. The background to the climate debate is a collapse of trust in public institutions of many kinds. Echoing this collapse in public reason, Nurse urges, ‘trust no one, trust only what the experiments and the data tell you’. But isn’t this also the message from climate sceptics, who accuse institutional, official science of corruption and political motivation?

It would seem that the sceptics have a good point here. Climate change has come to the rescue of the forgotten old academic department, the tired political establishment, and the disoriented journalist. The possibility of ecological catastrophe injects moral purpose back into public life, in spite of a collapse in trust. Accordingly, local authorities and national governments have, in recent years, transformed their purpose; now their goal is to monitor your bins rather than provide public services. Powerful supranational political and financial institutions have been created to ‘meet the challenge’ of climate change. And these political changes have for the most part occurred without any semblance of democracy; it is presupposed that these organisational changes to public life are legitimate because they are seemingly intended to do good.

Nurse might argue that this reorganisation of public life around environmental issues comes with the blessing of scientific authority, and that it is science which identified the need to adjust our lifestyles and economy. But the greening of domestic and international politics preceded any science. The concept of ‘sustainability’ was an established part of the international agenda long before the IPCC produced an ‘unequivocal’ consensus on climate change; indeed, the IPCC was established to create a consensus for political ends. Nurse, nearly recognising science’s role in the legitimisation of such political ecology, worries about loss of trust. As he noted in the Horizon film, if scientists are not ‘open about everything they do then the conversation will be dominated by people driven by politics and ideology’.

But the conversation is already driven by politics and ideology; it’s simply that Nurse does not recognise environmentalism as political or ideological, and he does not notice himself reproducing environmental politics and ideology. The loss of trust he now observes is not the consequence of politics and ideology, but the all-too-visible attempt to hide politics behind science and highly emotive images of catastrophe. If the presidents of science academies want their trust back, they will first have to admit to the politicisation of their function in an atmosphere of distrust. Nullius in verba, indeed.