On June 28, in an historic move the Intergovernmental Panel on Climate Change (IPCC) has released the expert review comments and responses to its latest assessment of the science of climate change. The IPCC report is the primary source of data for Al Gore's movie and book titled An Inconvenient Truth.

 Many of the comments by the reviewers are strongly critical of claims contained in the final report, and are directly at odds with the so-called "scientific consensus" touted by Gore and others calling for immediate government action. For example, the following comment by Eric Steig appears in Second Order Draft Comments, Chapter 6; section 6-42:

In general, the certainty with which this chapter presents our understanding of abrupt climate change is overstated. There is confusion between hypothesis and evidence throughout the chapter, and a great deal of confusion on the differences between an abrupt "climate change" and possible, hypothetical causes of such climate changes.

Source: Heartland Institute