The Intergovernmental Panel on Climate Change (IPCC) was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP), two organizations of the United Nations. Thousands of people from all over the world contribute to the work of the IPCC. Experts volunteer their time as IPCC authors to assess the current state of the climate (based on scientific literature) on a regular basis. The IPCC’s objective is to provide governments at all levels with scientific information that they can use to develop climate policies. IPCC reports are also a key input into international climate change negotiations.