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Journal Article

Thresholds of significant harm at global level: The journey of the Earth Commission

Authors

Gupta,  Joyeeta
External Organizations;

Abrams,  Jesse F.
External Organizations;

McKay,  David Armstrong
External Organizations;

Bai,  Xuemei
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Ebi,  Kristi L.
External Organizations;

Fezzigna,  Paola
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Gentile,  Giuliana
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Gifford,  Lauren
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Hasan,  Syezlin
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Jacobson,  Lisa
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Karg,  Aljoscha
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Lade,  Steven
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Lenton,  Tim
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Liverman,  Diana
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Mohamed,  Awaz
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Nakicenovic,  Nebojsa
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Obura,  David
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/persons/resource/johan.rockstrom

Rockström,  Johan       
Potsdam Institute for Climate Impact Research;

Stewart-Koster,  Ben
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van Vuuren,  Detlef
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Verburg,  Peter
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Ylla-Català,  Raimon C.
External Organizations;

Zimm,  Caroline
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Citation

Gupta, J., Abrams, J. F., McKay, D. A., Bai, X., Ebi, K. L., Fezzigna, P., Gentile, G., Gifford, L., Hasan, S., Jacobson, L., Karg, A., Lade, S., Lenton, T., Liverman, D., Mohamed, A., Nakicenovic, N., Obura, D., Rockström, J., Stewart-Koster, B., van Vuuren, D., Verburg, P., Ylla-Català, R. C., Zimm, C. (2025): Thresholds of significant harm at global level: The journey of the Earth Commission. - Earth System Governance, 25, 100263.
https://doi.org/10.1016/j.esg.2025.100263


Cite as: https://publications.pik-potsdam.de/pubman/item/item_32876
Abstract
The planetary boundary framework proposes ‘safe’ boundaries, but these boundaries are not necessarily ‘just’. Hence, we ask: How has the Earth Commission defined just boundaries building on the concept of minimizing significant harm and how many people are currently exposed to harm above the safe and just threshold? We document the work of the Earth Commission to address these questions using our Earth System Justice framework. We conclude that: (a) from a justice perspective, nine criteria need to be considered when defining just boundaries; (b) the proportions of populations exposed to harm from exceeding safe and just boundaries today range from 14 to 85 % for the five domains studied (climate, biosphere, water, nutrients, aerosols); and (c) argue that the absolute upper limit for significant harm is possibly harm to 1 % of the population, which although not stringent enough to leave no one behind, would require radical transformations, given the populations currently already above the threshold.