He is not an authoritative voice on climate science. LLNL climate scientists have devoted their careers to measuring, modeling, and understanding changes in the climate system. Professor Koonin has not,” Santer wrote.3 The decision to invite Professor Koonin will not help LLNL to attract and retain the best and brightest climate scientists. More importantly, LLNL is participating in the dissemination of Professor Koonin’s incorrect views on climate science. This makes it more difficult for US citizens to reach informed, science-based decisions on appropriate responses to climate change. anter added, “Writing and releasing this statement may be viewed by some as an act of disloyalty. I do not see it that way. I chose to remain loyal to the climate science we have performed at LLNL for over three decades. I do not intend to remain silent while the credibility and integrity of this research is challenged. It is simply untrue that Prof. Koonin is confronting climate scientists with unpleasant facts they ignored or failed to understand,” Santer wrote in his resignation letter. “The climate science community treats uncertainties in an open and transparent way. It has done so for decades. At LLNL, we routinely consider whether uncertainties in models, observations, and natural climatic variability call into question findings of a large human influence on global climate. They do not.