Policy Documents

Climate Change Reconsidered II: Physical Science

September 17, 2013

The Nongovernmental International Panel on Climate Change (NIPCC) released a major new report on climate change science produced by an international team of 40 scientists at a press conference on Sept. 17, 2013, at the James R. Thompson Center in downtown Chicago. [Click here to visit the NIPCC website for extensive background information and materials on this project.]

The new report, titled Climate Change Reconsidered II: Physical Science, challenges what its authors say are the overly alarmist reports of the United Nations’ Intergovernmental Panel on Climate Change (IPCC), whose next report is due out in late September 2013.

The series is published by the Chicago-based Heartland Institute, a national nonprofit research and education organization. Economist magazine in 2012 called The Heartland Institute “the world’s most prominent think tank promoting skepticism on man-caused climate change.”The New York Times calls Heartland “the primary American organization pushing climate change skepticism.”

Like earlier volumes in the Climate Change Reconsidered series, this new report cites thousands of peer-reviewed articles to determine the current state-of-the-art of climate science. NIPCC authors paid special attention to contributions that were overlooked by the IPCC or presented data, discussion, or implications arguing against the IPCC’s claim that dangerous global warming is resulting, or will result, from human-related greenhouse gas emissions.

Most notably, the authors say the IPCC has exaggerated the amount of warming that is likely to occur if the concentration of atmospheric carbon dioxide were to double and whatever warming may occur would likely be modest and cause no net harm to the global environment or to human well-being.

Copies of a Summary for Policymakers, an executive summary, and a digital version of the entire book can be downloaded for free at the NIPCC website.

NIPCC is a project of three nonprofit organizations: Science and Environmental Policy Project, Center for the Study of Carbon Dioxide and Global Change, and The Heartland Institute. The lead authors of the new report are Craig Idso, Ph.D. and S. Fred Singer, Ph.D., identified above, and Robert Carter, Ph.D., former head of the School of Earth Sciences, James Cook University (Australia). Scientists from around the world participated as lead authors, section authors, contributors, and reviewers.

The first two volumes of the Climate Change Reconsidered series, published in 2009 and 2011, are widely recognized as the most comprehensive and authoritative critiques of the reports of the United Nations’ IPCC. The complete texts and reviews of both volumes are available here and here. In June, a division of the Chinese Academy of Sciences published a Chinese translation and condensed edition of the two volumes.