The DOI matches its Crossref record; 19 of the 19 references it cites were found in a registry or an index.
Climate Endgame: Exploring catastrophic climate change scenarios
Open accessAbstract
Prudent risk management requires consideration of bad-to-worst-case scenarios. Yet, for climate change, such potential futures are poorly understood. Could anthropogenic climate change result in worldwide societal collapse or even eventual human extinction? At present, this is a dangerously underexplored topic. Yet there are ample reasons to suspect that climate change could result in a global catastrophe. Analyzing the mechanisms for these extreme consequences could help galvanize action, improve resilience, and inform policy, including emergency responses. We outline current knowledge about the likelihood of extreme climate change, discuss why understanding bad-to-worst cases is vital, articulate reasons for concern about catastrophic outcomes, define key terms, and put forward a research agenda. The proposed agenda covers four main questions: 1) What is the potential for climate change to drive mass extinction events? 2) What are the mechanisms that could result in human mass mortality and morbidity? 3) What are human societies' vulnerabilities to climate-triggered risk cascades, such as from conflict, political instability, and systemic financial risk? 4) How can these multiple strands of evidence—together with other global dangers—be usefully synthesized into an “integrated catastrophe assessment”? It is time for the scientific community to grapple with the challenge of better understanding catastrophic climate change.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Trajectories of the Earth System in the Anthropocene
Steffen, W., Rockström, J., Richardson, K., Lenton, T. M., Folke, C., Liverman, D., Summerhayes, C. P., Barnosky, A. D., Cornell, S. E., Crucifix, M., et al. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1810141115 · Cited by 3,139 · cited 2×
“This means mapping different “Hothouse Earth” scenarios (21) or other extreme scenarios, such as alternative circulation regimes or large, irreversible changes in ice cover and sea level.”
BackgroundSelf-citationAnticipating Critical Transitions
Scheffer, M., Carpenter, S. R., Lenton, T. M., Bascompte, J., Brock, W., Dakos, V., van de Koppel, J., van de Leemput, I. A., Levin, S. A., van Nes, E. H., et al. (2012) · Science · doi:10.1126/science.1225244 · Cited by 2,208 · cited 1×
“tems bring their own sources of fragility, particularly if networks are relatively homogeneous, with a few dominant nodes highly connected to everyone else (83).”
BackgroundSelf-citationAppealing to fear: A meta-analysis of fear appeal effectiveness and theories
Tannenbaum, M. B., Hepler, J., Zimmerman, R. S., Saul, L., Jacobs, S., Wilson, K., & Albarracín, D. (2015) · Psychological Bulletin · doi:10.1037/a0039729 · Cited by 1,315
An Assessment of Earth's Climate Sensitivity Using Multiple Lines of Evidence
Sherwood, S. C., Webb, M. J., Annan, J. D., Armour, K. C., Forster, P. M., Hargreaves, J. C., Hegerl, G., Klein, S. A., Marvel, K. D., Rohling, E. J., et al. (2020) · Reviews of Geophysics · doi:10.1029/2019rg000678 · Cited by 1,254 · cited 4×
“Recent findings on equilibrium climate sensitivity (ECS) (14, 24) underline that the magnitude of climate change is uncertain even if we knew future GHG concentrations.”
BackgroundInfluentialFuture of the human climate niche
Xu, C., Kohler, T. A., Lenton, T. M., Svenning, J.-C., & Scheffer, M. (2020) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1910114117 · Cited by 862
Self-citationFuture temperature in southwest Asia projected to exceed a threshold for human adaptability
Pal, J. S., & Eltahir, E. A. B. (2016) · Nature Climate Change · doi:10.1038/nclimate2833 · Cited by 749
A framework for complex climate change risk assessment
Simpson, N. P., Mach, K. J., Constable, A., Hess, J., Hogarth, R., Howden, M., Lawrence, J., Lempert, R. J., Muccione, V., Mackey, B., et al. (2021) · One Earth · doi:10.1016/j.oneear.2021.03.005 · Cited by 722
Peters, G.-J. Y., Ruiter, R. A. C., & Kok, G. (2013) · Health Psychology Review · doi:10.1080/17437199.2012.703527 · Cited by 679
Pliocene and Eocene provide best analogs for near-future climates
Burke, K. D., Williams, J. W., Chandler, M. A., Haywood, A. M., Lunt, D. J., & Otto-Bliesner, B. L. (2018) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1809600115 · Cited by 624
Penn, J. L., Deutsch, C., Payne, J. L., & Sperling, E. A. (2018) · Science · doi:10.1126/science.aat1327 · Cited by 362
Cited by
Quantifying the human cost of global warming
Lenton, T. M., Xu, C., Abrams, J. F., Ghadiali, A., Loriani, S., Sakschewski, B., Zimm, C., Ebi, K. L., Dunn, R. R., Svenning, J.-C., et al. (2023) · Nature Sustainability · doi:10.1038/s41893-023-01132-6 · Cited by 409
Self-citationMany risky feedback loops amplify the need for climate action
Ripple, W. J., Wolf, C., Lenton, T. M., Gregg, J. W., Natali, S. M., Duffy, P. B., Rockström, J., & Schellnhuber, H. J. (2023) · One Earth · doi:10.1016/j.oneear.2023.01.004 · Cited by 382
Self-citationEarlier collapse of Anthropocene ecosystems driven by multiple faster and noisier drivers
Willcock, S., Cooper, G. S., Addy, J., & Dearing, J. A. (2023) · Nature Sustainability · doi:10.1038/s41893-023-01157-x · Cited by 150
Scientific novelty beyond the experiment
Hallsworth, J. E., Udaondo, Z., Pedrós‐Alió, C., Höfer, J., Benison, K. C., Lloyd, K. G., Cordero, R. J. B., de Campos, C. B. L., Yakimov, M. M., & Amils, R. (2023) · Microbial Biotechnology · doi:10.1111/1751-7915.14222 · Cited by 62
Environmental Impact of Dermatology and Action Towards It: A Narrative Review
Niebel, D., Tso, S., Parker, E. R., Rosenbach, M., Tan, E., Thio, H. B., Coates, S. J., Andersen, L. K., Hecker, C., Saha, S., et al. (2025) · International Journal of Dermatology · doi:10.1111/ijd.17810 · Cited by 8
Metadata
- Authors
- Kemp, L., Xu, C., Depledge, J., Ebi, K. L., Gibbins, G., Kohler, T. A., Rockström, J., Scheffer, M., Schellnhuber, H. J., Steffen, W., & Lenton, T. M.
- Venue
- Proceedings of the National Academy of Sciences
- Published
- 2022-08
- Volume
- 119
- Issue
- 34
- Pages
- e2108146119-e2108146119
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- OpenAlex
- W4289262061
- Cited by
- 791
- References
- 19
- FWCI
- 68.04
- Type
- journal article
- Language
- en
- Open access
- hybrid
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Climate Endgame: Exploring catastrophic climate change scenarios. https://app.cochat.ai/papers/10.1073/pnas.2108146119
- The paper
- Kemp, L., Xu, C., Depledge, J., Ebi, K. L., Gibbins, G., Kohler, T. A., Rockström, J., Scheffer, M., Schellnhuber, H. J., Steffen, W., & Lenton, T. M. (2022). Climate Endgame: Exploring catastrophic climate change scenarios. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2108146119
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.