http://www.globalcarbonatlas.org/en/CO2-emissions
https://www.footprintnetwork.org/our-work/climate-change/
https://phys.org/news/2018-05-carbon-footprints-cities.html
https://www.scientificamerican.com/article/heres-how-much-cities-contribute-to-the-worlds-carbon-footprint/
http://citycarbonfootprints.info
https://www.ucsusa.org/global-warming/science-and-impacts/science/each-countrys-share-of-co2.html