
https://www.europarl.europa.eu/at-your-service/files/be-heard/eurobarometer/2019/parlemeter-2019/executive-summary/en-parlemeter-2019-executive-summary.pdf

https://www.hamiltonproject.org/assets/files/Environmental_Facts_FINAL.pdf

https://www.sciencemag.org/news/2020/04/reopening-puts-germany-s-much-praised-coronavirus-response-risk?utm_campaign=news_daily_2020-04-27&et_rid=682362580&et_cid=3304734#