
https://wiiw.ac.at/the-emissions-reduction-potential-for-freight-transport-on-a-high-speed-rail-line-along-the-european-silk-road-dlp-6635.pdf

https://www.brookings.edu/articles/making-emissions-count-in-country-classifications/

https://theconversation.com/northern-europe-faces-biggest-relative-increase-in-uncomfortable-heat-and-is-dangerously-unprepared-new-research-209745