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UN-Konferenz zur Nachhaltigkeit: Versandet in Rio
21. Juni 2012 - 22. Juni 2012

UN-Klimakonferenz: Das Kyoto-Protokoll wird bis 2020 verlängert
8. Dezember 2012 - 8. Dezember 2012

CO2-Dichte so hoch wie nie in Atmosphäre
11. Mai 2013 - 11. Mai 2013