Nature: Despite the problems experienced by the Intergovernmental Panel on Climate Change (IPCC) over the past year2009’s “Climategate” when e-mails were leaked from the University of East Anglia’s Climatic Research Unit in the UK and the revelations concerning mistakes in the most recent IPCC climate assessment reportbeleaguered IPCC chairman and economist Rajendra Pachauri managed to retain his position. After the IPCC’s plenary meeting last week, Ottmar Edenhofer, cochair of the IPCC’s working group on climate-change mitigation, said, “Governments made it very clear that they expect him to make changes.” To restore some of the IPCC’s lost credibility, members agreed on new guidelines on the use of non-peer-reviewed literature, on the characterization of scientific uncertainty, and on how to handle and correct errors.