The Intergovernmental Panel on Climate Change (IPCC) was established under the sponsorship of the World Meteorological Organisation (WMO) and the United Nations Environment Programme (UNEP). The UNEP's belief in man made warming in the late 1970's led to a stage-managed conference in Villach in 1985, which in turn led to the political decision to form the IPCC.
The IPCC rose to prominence because people with clear bias were appointed to key positions where they could influence the development of the entire organisation. Bert Bolin, the first chairman of the IPCC was already heavily committed to the notion of man made warming having worked previously for the UNEP, WMO, the Brundtland Report, the SCOPE 29 report (on which the first IPCC report was largely based) and, very crucially, having documented that the Villach conference reached a consensus that man made emissions of carbon dioxide were to blame for variations in climate. John Houghton, the first chairman of the IPCC working group that attributes blame for climate change, was assisted in his assertions by his staff at the UK Met Office and by a very supportive UK government. Read more.