United Nations Climate Change  -  https://unfccc.int/

 United Nations Climate Change Portal  -  https://www.un.org/en/climatechange/

 The Intergovernmental Panel on Climate Change  -  https://www.ipcc.ch/

 NASA: Climate Change and Global Warming  -  https://climate.nasa.gov/

 National Oceanic and Atmospheric Administration (NOAA)  -  https://www.noaa.gov/

 100 Views of Climate Change  -  http://changingclimates.colostate.edu/index.html

 National Snow and Ice Data Center  -  https://nsidc.org/

 Climate Change - National Geographic  -  https://www.nationalgeographic.com/environment/climate-change/

 The Urbino Summer School in Paleoclimatology - https://urbinossp.it/

 World Bank - https://data.worldbank.org/indicator/EN.ATM.CO2E.PC

 Climate Change Initiative European Space Agency (ESA CCI) - http://cci.esa.int

  European Union Copernicus Climate Change Service web site - https://climate.copernicus.eu/climate-bulletins