A university committee has been looking into the work of meteorology professor Michael Mann since late November, when leaked e-mails were obtained by computer hackers from a British research center. Mann's research has long been a target of criticism by skeptics of man-made global warming theories.
An inquiry report issued Wednesday said an allegation of inappropriate faculty conduct in scientific discourse warrants further investigation.
The report said three other allegations contained "no substance" on which to follow up.
