Timeline of Climate Change: References & Edit History

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  • Patrick Riley
    Patrick Riley is the Senior Illustrator for Encyclopædia Britannica. He has worked at Britannica since 2007.
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Article History

Type Description Contributor Date
Updated the number of parties that have ratified the Paris Agreement and the concentration of carbon dioxide in the atmosphere. Apr 17, 2026
Media updated. Jul 10, 2025
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