The Intergovernmental Panel on Climate Change (IPCC) was established in 1988 by the World Meteorological Organization and the United Nations Environment Programme. It assesses scientific information relevant to understanding climate change. The IPCC has produced several assessment reports since 1990 that have informed international climate change agreements and policies. The IPCC's role is to objectively evaluate climate science and its impacts in a comprehensive and transparent manner. Its reports involve hundreds of scientists and are used as an input in international climate negotiations under the UNFCCC.