Penn State Clears Climate Scientist

Pennsylvania State University has found no evidence that Michael E. Mann, a climate scientist, engaged in scientific misconduct, The New York Times reported. Mann has figured prominently in what doubters of climate change call "climategate" in which e-mail messages involving Mann and other scholars have been read by some to suggest politically driven descriptions of their findings. The university's inquiry did criticize Mann for sometimes sharing unpublished manuscripts without authors' permission.