Freely available climate and climate-related data is essential to catalyze the changes in policies, investments and technologies that will be needed if we are to move towards a climate-smart future. The Climate Change Knowledge Portal is a central hub of information, data and reports about climate change around the world. With this portal you can query, map, compare, chart and summarize key climate and climate-related information. Open data: all of the climate data featured on the Climate Change Knowledge Portal has been published as open data resources. Check out historical climate data, supplemental data to the Little Data Book on Climate Change and the climate data API.