claim: But then, just over a year ago, Mike Wallace, a hydrologist with 30 years’ experience, noticed while researching his PhD that they had omitted some key information[ … ] his results were surprising : there has been no reduction in oceanic pH
evidence: The arts faculty, which in Germany was labelled the faculty of philosophy, started demanding contributions to research, attested by a dissertation, for the award of their final degree, which was labelled Doctor of Philosophy ( abbreviated as Ph.D. )—originally this was just the German equivalent of the Master of Arts degree.