Los Angeles Times

Yes, Exxon Mobil misled

A peer-reviewed academic study looks at what the company knew and what it told the public.

- By Naomi Oreskes and Geoffrey Supran Naomi Oreskes is professor of the history of science at Harvard and coauthor of “Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming.” Geoffrey Supran is

In late August, we published the first academic analysis of Exxon Mobil’s 40-year history of communicat­ions on climate change. We published our findings in an open-access, peer-reviewed journal and made our method and evidence transparen­t and auditable by publishing 121 pages of supplement­ary materials. The result: a systematic discrepanc­y between what Exxon Mobil scientists communicat­ed in their scientific articles and internal reports, and what the company told the public in “advertoria­ls” — advertisem­ents in the New York Times masqueradi­ng as editorials. In other words, our study showed that Exxon Mobil misled the public about climate science and its implicatio­ns for decades.

Reviewing 187 Exxon Mobil documents, we found that 83% of peer-reviewed papers authored by Exxon Mobil scientists and 80% of the company’s internal communicat­ions acknowledg­ed that climate change was real and human-caused. In contrast, only 12% of Exxon Mobil’s advertoria­ls directed at the public did so, with 81% instead expressing doubt.

How did the world’s largest publicly traded oil and gas company respond? With a straw man, a falsehood, cherry picking and character assassinat­ion.

The straw man: Exxon Mobil claims that we accused them of hiding or suppressin­g climate science research, but to quote verbatim from our study, “We stress that the question is not whether Exxon Mobil ‘suppressed climate change research,’ but rather how they communicat­ed about it.” What our analysis does say — and show — is that Exxon Mobil misled the public. On this point the company is silent.

The falsehood: Exxon Mobil says we “have admitted” that our previous “allegation­s that the company hid its climate science research were wrong.” That’s not true. One journalist asked where he could find the link to the allegation­s; the answer is he couldn’t because we never made them. Exxon Mobil has put words in our mouths and then claimed we retracted them.

Cherry picking: Exxon Mobil argues that a handful of sentences within two advertoria­ls undercut our analysis of 187 documents. But those two advertoria­ls were included in our study. This is the kind of cherry picking of which Exxon Mobil has repeatedly accused others.

Character assassinat­ion: Exxon Mobil says we are in it for the money. The fact is, Naomi Oreskes did this work as a Harvard professor, with no additional payment from any source. She has never been on the payroll of any NGO or activist organizati­on. Geoffrey Supran did two months of this work on a postdoctor­al salary paid by the Rockefelle­r Family Fund and 11 more months on his own dime, in parallel with other, funded research projects. And who do you think gets paid more, an oil industry executive or a postdoc?

We did begin our research with views on Exxon Mobil and its climate communicat­ions, just as most solar-cell engineers have views on renewable energy and most medical researcher­s have views on public health. Objectivit­y doesn’t mean having no opinions. It means using objective methods and being willing to revise your views in light of evidence. The point of our new study was to read the documents Exxon Mobil claimed would exonerate them.

In sum, Exxon Mobil is now misleading the public about its history of misleading the public. This is just the latest round in a long and troubling record of doubtmonge­ring and misdirecti­on by the fossil fuel industry and libertaria­n think tanks in response to the scientific evidence of climate change.

It’s become a familiar pattern. We published science, Exxon Mobil offered spin.

Separating the two is peer review. The idea is simple: Every scientific claim — unlike every company press release — is vetted by independen­t analysis. At minimum, peer reviewers look for mistakes in data gathering, analysis and interpreta­tion. Usually they go further, addressing the quality and quantity of data, the reasoning linking the evidence to its interpreta­tion, the mathematic­s or computer simulation­s used to analyze and interpret the data, and even the prior reputation of the claimant. If the person is thought to do sloppy work, has previously been involved in spurious claims or has not disclosed potential conflicts of interest, he or she can expect to attract tougher scrutiny. Scientific authors are required to take reviewers’ criticisms seriously, and to fix any mistakes that have been found. (We did this with our paper.)

The reviewers must be experts and they must be independen­t. They can be as tough as they need to be, because they are anonymous. Editors spend considerab­le time finding reviewers who meet these criteria.

People have gone to the moon, cured diseases, invented new materials, spliced the gene and split the atom — all on the basis of peer-reviewed science. It’s how you knew when and where to watch the solar eclipse.

Exxon Mobil has a track record of disparagin­g peer-reviewed climate science. Now they are disparagin­g peer-reviewed social science too. We think that makes it pretty clear who can be trusted — and who can’t — when it comes to facts about the past and decisions we need to make about our future.

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