An investigation by the National Science Foundation has found no evidence of wrongdoing or misconduct by Penn State climate-change researcher Michael Mann.
Mann, Penn State professor of meteorology, was the target of accusations from climate-change skeptics after thousands of e-mails exchanged between climate-change researchers were hacked from the University of East Anglia and made public. Critics pointed to the e-mails as evidence that Mann and other scientists had hidden and manipulated data to bolster the argument for global warming.
A closeout memorandum by the National Science Foundation's Inspector Generals office on the case states that as part of our investigation, we again fully reviewed all the reports and documentation the University provided to us, as well as a substantial amount of publically available documentation concerning both (Manns) research and parallel research conducted by his collaborators and other scientists in that particular field of research.
The review notes "the research in question was originally completed over 10 years ago. Although the subject's data is still available and still the focus of significant critical examination, no direct evidence has been presented that indicates the subject fabricated the raw data he used for his research or falsified his results."
The review concludes that lacking any direct evidence of research misconduct, as defined under the NSF Research Misconduct Regulation, we are closing this investigation with no further action.
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