claim: “Dr Browman, a marine scientist for 35 years, said he was not saying that ocean acidification posed no threat, but that he believed that “a higher level of academic scepticism” should be applied to the topic.
evidence: The Office of the Inspector General (OIG) of the National Science Foundation closed an investigation on 15 August 2011 that exonerated Michael Mann of Pennsylvania State University of charges of scientific misconduct.