In 1988, UNEP and WMO jointly established IPCC as concern over climate change became a political issue. The purpose of the IPCC was to assess the state of knowledge on the various aspects of climate change including science, environmental and socio-economic impacts and response strategies. The IPCC is recognized as the most authoritative scientific and technical voice on climate change, and its assessments had a profound influence on the negotiators of the United Nations Framework Convention on Climate Change (UNFCCC) and its Kyoto Protocol. The IPCC continues to provide governments with scientific, technical and socio-economic information relevant to evaluating the risks and developing a response to global climate change. (http://www.grida.no/climate/vital/16.htm http://www.ipcc.ch). Working Group II of the IPCC assesses the vulnerability of socio-economic and natural systems to climate change, negative and positive consequences of climate change, and options for adapting to it.