Hätten Sie das gewusst?
Quellen:
https://unesdoc.unesco.org/ark:/48223/pf0000215492
https://climate.nasa.gov/evidence/
https://www.unenvironment.org/explore-topics/climate-change/facts-about-climate-emergency
https://www.earthecho.org/news/did-you-know-some-interesting-facts-about-the-environment
https://sumas.ch/sustainability-facts
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