contend that their claims are not sufficiently incorporated in the report. Others regard the IPCC as too conservative in its estimates of potential harm from climate change. The report has also been criticized for inclusion of an erroneous date for the projected demise of the Himalayan glaciers. Related to the subject of global warming in general, the IPCC Fourth Assessment Report has been discussed by various bodies such as government officials, special interest groups and scientific organizations; see the article "Politics of global warming" for a thorough discussion of the politics surrounding the phenomenon, and the positions of the various parties involved. The United Nations appointed an independent board of scientists to "review the workings of the world's top climate science panel" which reported in September 2010; see Intergovernmental Panel on Climate Change#InterAcademy Council review. Response to AR4 Several science academies have referred to and/or reiterated some of the conclusions of AR4. These include: Joint-statements made in 2007, 2008 and 2009 by the science academies of Brazil, China, India, Mexico, South Africa and the G8 nations (the "G8+5"). Publications by the Australian Academy of Science. A joint-statement made in 2007 by the Network of African Science Academies. A statement made in 2010 by the Inter Academy Medical Panel This statement has been signed by 43 scientific academies. The Netherlands Environmental Assessment Agency (PBL, et al., 2009; 2010) has carried out two reviews of AR4. These reviews are generally supportive of AR4's conclusions. PBL (2010) make some recommendations to improve the IPCC process. A literature assessment by the US National Research Council (US NRC, 2010) concludes:Climate change is occurring, is caused largely by human activities, and poses significant risks for—and in many cases is already affecting—a broad range of human and natural systems [emphasis in original text]. ... This conclusion is based on a substantial array of scientific evidence, including recent work, and is consistent with the conclusions of recent assessments by the U.S. Global Change Research Program ..., the Intergovernmental Panel on Climate Change’s Fourth Assessment Report ..., and other assessments of the state of scientific knowledge on climate change. Projected date of melting of Himalayan glaciers Some errors have been found in the IPCC AR4 Working Group II report. Two errors include the melting of Himalayan glaciers (see later section), and Dutch land area that is below sea level. A paragraph in the 2007 Working Group II report ("Impacts,