Global warming alarmists have been discredited, but you wouldn't know it from the rhetoric this Earth Day.

By RICHARD S. LINDZEN, PhD

In mid-November of 2009 there appeared a file on the Internet containing thousands of emails and other documents from the Climatic Research Unit at the University of East Anglia in Great Britain. How this file got into the public domain is still uncertain, but the emails, whose authenticity is no longer in question, provided a view into the world of climate research that was revealing and even startling.

In what has come to be known as "climategate," one could see unambiguous evidence of the unethical suppression of information and opposing viewpoints, and even data manipulation. The Climatic Research Unit is hardly an obscure outpost; it supplies many of the authors for the United Nations' Intergovernmental Panel on Climate Change (IPCC). Moreover, the emails showed ample collusion with other prominent researchers in the United States and elsewhere.
One might have thought the revelations would discredit the allegedly settled science underlying currently proposed global warming policy, and, indeed, the revelations may have played some role in the failure of last December's Copenhagen climate conference to agree on new carbon emissions limits. But with the political momentum behind policy proposals and billions in research funding at stake, the impact of the emails appears to have been small.
The general approach of the official scientific community (at least in the United States and the United Kingdom) has been to see whether people will bother to look at the files in detail (for the most part they have not), and to wait until time diffuses the initial impressions in order to reassert the original message of a climate catastrophe that must be fought with a huge measure of carbon control.

This reassertion, however, continues to be suffused by illogic, nastiness and outright dishonesty. There were, of course, the inevitable investigations of individuals like Penn State University's Michael Mann (who manipulated data to create the famous "hockey stick" climate graph) and Phil Jones (director of the CRU). The investigations were brief, thoroughly lacking in depth, and conducted, for the most part, by individuals already publicly committed to the popular view of climate alarm. The results were whitewashes that are quite incredible given the actual data. Read more.

Dr. Lindzen is professor of Atmospheric Sciences at the Massachusetts Institute of Technology.