Ken Caldeira

Environmental science of climate, carbon, and energy

Dead links and missing images

Dead links and missing images

Generated by tools/audit_links.py against the built site. Re-run after making fixes.

Sections are ordered by how certain the problem is. Publishers routinely return 403 to non-browser clients, so an error code alone does not prove a link is broken – only sections 1 and 2 are known-bad.

  count
Images that no longer exist anywhere 6
URLs confirmed gone (404 or domain does not resolve) 24
Needs a human look (timeout, 5xx, odd status) 13
Refused automated requests, almost certainly fine 62
Total distinct outbound URLs checked 310

1. Images that no longer exist

Absent from the WordPress media library, 404 on the old live site, and no Wayback snapshot – already broken before the migration. Each needs a replacement image or removal of the reference.

  • /assets/images/2019/01/20190112_115029_crop-1_lowres.jpg
  • /assets/images/2021/11/image-1-3.png
  • /assets/images/2021/11/image-1-7.png
  • /assets/images/2021/11/image-1-22.png
  • /assets/images/2021/11/image-1-24.png
  • /assets/images/2021/11/image-1-28.png

2. Confirmed gone

404, or the domain no longer resolves at all. Broken images here are visible holes in a post; links are silent.

  • [Errno -2] Name or service not known (link) http://CarnegieEnergyInovation.org
    • /2017/10/imagine-it-is-year-2100-and-the-world-is-a-good-place-to-be/
  • HTTP 404 (link) http://ceassessment.org/staff/thompson/
    • /2017/07/larsen-c/
  • [Errno -2] Name or service not known (link) http://cgarcia-sanchez.com/
    • /2018/07/on-choosing-problems-to-work-on/
  • [Errno -2] Name or service not known (link) http://dge.stanford.edu/labs/caldeiralab/Caldeira_research/Albright_OneTree.html
    • /2016/11/what-inspired-you-to-get-into-the-field-of-geoengineering/
  • [Errno -2] Name or service not known (link) http://dge.stanford.edu/labs/caldeiralab/Caldeira_research/Govindasamy_Caldeira2.html
    • /2016/11/what-inspired-you-to-get-into-the-field-of-geoengineering/
  • [Errno -2] Name or service not known (link) http://dge.stanford.edu/labs/caldeiralab/Caldeira_research/Hoffert_Caldeira3.html
    • /2016/11/what-inspired-you-to-get-into-the-field-of-geoengineering/
  • [Errno -5] No address associated with hostname (link) http://www.econ.yale.edu/~nordhaus/homepage/homepage/DICE2013R_100413_vanilla.gms
    • /2021/08/income-inequality-and-climate-damage-relative-impact-on-utility/
  • HTTP 404 (link) http://www.rsc.org/suppdata/c7/ee/c7ee03029k/c7ee03029k1.pdf
    • /2018/03/geophysical-constraints-on-the-reliability-of-solar-and-wind-power-in-the-united-states/
  • HTTP 404 (link) http://www.worldoceansday.org/
    • /2016/06/helping-the-oceans-to-help-us/
  • HTTP 404 (link) https://airlinkflight.org/help-ukraine/
    • /2025/03/ukraine-fact-sheet-how-you-can-help/
  • HTTP 404 (link) https://bsky.app/profile/kencaldeira.com
    • /about/
  • HTTP 404 (link) https://bsky.app/profile/kencaldeira.com/post/3m5iegf7ouc2p
    • /2025/11/chopin-voting-analysis/
  • [Errno -3] Temporary failure in name resolution (link) https://dynamicecology.wordpress.com/2016/02/24/the-5-pivotal-paragraphs-in-a-paper/
    • /2018/05/steps-to-writing-a-scientific-paper-based-on-model-results/
  • HTTP 404 (link) https://evsc.as.virginia.edu/people/profile/sam8f
    • /2021/02/ocean-acidification-a-career-journey-from-curiosity-driven-science-to-a-search-for-solutions/
  • HTTP 404 (link) https://ourworldindata.org/grapher/gdp-per-capita-maddison-2020?yScale=log&time=1950..2018
    • /2022/11/multi-decadal-country-level-regressions-on-gdp-growth-and-temperature-change/
  • HTTP 404 (link) https://scholar.google.com/citations?hl=en&user=-56AsZEAAAAJ
    • /2021/07/how-much-hydrogen-could-we-produce-without-adding-additional-generation-capacity/
  • HTTP 404 (link) https://twitter.com/ALevermann/status/918891097862168577
    • /2017/10/ocean-heat-flux-and-open-ocean-wind-energy/
  • HTTP 404 (link) https://twitter.com/cascio
    • /2015/02/on-alan-robocks-comments-regarding-the-cia-and-climate-intervention/
  • [Errno -5] No address associated with hostname (link) https://williamnordhaus.com/dicerice-models
    • /2021/08/income-inequality-and-climate-damage-relative-impact-on-utility/
  • HTTP 404 (link) https://www.fao.org/countryprofiles/index/en/?iso3=UKR
    • /2025/03/ukraine-fact-sheet-how-you-can-help/
  • HTTP 404 (link) https://www.husqvarna-motorcycles.com/us/svartpilen/svartpilen-401/
    • /2019/06/consumerism-as-addiction/
  • [Errno -5] No address associated with hostname (link) https://www.nrel.gov/analysis/re-futures.html
    • /2018/03/geophysical-constraints-on-the-reliability-of-solar-and-wind-power-in-the-united-states/
  • HTTP 404 (link) https://www.state.gov/united-with-ukraine/
    • /2025/03/ukraine-fact-sheet-how-you-can-help/
  • HTTP 404 (link) https://www.un.org/en/development/desa/publications/world-population-prospects-2015-revision.html
    • /2020/10/climate-change-as-an-incentive-to-future-human-migration-2/

3. Needs a human look

Timeouts, 5xx and unusual statuses – could be transient, could be real. Worth clicking.

  • [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, c (link) http://ioc-unesco.org/
    • /2016/06/helping-the-oceans-to-help-us/
  • timed out (link) http://menzelphoto.com/
    • /2019/06/consumerism-as-addiction/
  • timed out (link) http://www.tulane.edu/~lamp/whiteside.pdf
    • /2018/05/steps-to-writing-a-scientific-paper-based-on-model-results/
  • timed out (link) https://dge.carnegiescience.edu/labs/caldeira-lab
    • /2020/10/climate-change-as-an-incentive-to-future-human-migration-2/
    • /2020/11/climate-and-energy-discussion-on-straight-talk-with-hank-paulson/
    • /2021/02/ocean-acidification-a-career-journey-from-curiosity-driven-science-to-a-search-for-solutions/
  • timed out (link) https://dge.carnegiescience.edu/labs/caldeiralab/Caldeira_research/Hoffert_Caldeira3.html
    • /2017/06/trump-unfccc-2/
  • timed out (link) https://dge.carnegiescience.edu/people/eantonini
    • /2021/06/replenishing-the-wind/
  • timed out (link) https://dge.carnegiescience.edu/people/truggles
    • /2021/07/how-much-hydrogen-could-we-produce-without-adding-additional-generation-capacity/
  • timed out (link) https://sedac.ciesin.columbia.edu/
    • /2022/11/multi-decadal-country-level-regressions-on-gdp-growth-and-temperature-change/
  • HTTP 503 (link) https://www.eia.gov/tools/glossary/
    • /2018/02/mzj-hydro-explainer/
  • HTTP 400 (link) https://www.facebook.com/andrey.lyssenko.art/
    • /2019/09/on-learning-to-see-the-glass-as-half-full/
  • TimeoutError: The read operation timed out (link) https://www.washingtonpost.com/news/capital-weather-gang/wp/2017/01/18/scientists-react-to-earths-warmest-year-we-are-heading-into-a-new-unknown
    • /2017/01/2016-is-earths-hottest-year-on-record-a-behind-the-washington-post-story/
  • TimeoutError: The read operation timed out (link) https://www.washingtonpost.com/news/energy-environment/wp/2017/10/09/theres-enough-wind-energy-over-the-oceans-to-power-human-civilization-scientists-say/
    • /2017/10/ocean-heat-flux-and-open-ocean-wind-energy/
  • TimeoutError: The read operation timed out (link) https://www.washingtonpost.com/politics/trump-to-announce-us-will-exit-paris-climate-deal/2017/06/01/fbcb0196-46da-11e7-bcde-624ad94170ab_story.html
    • /2017/06/trump-unfccc-2/

4. Refused automated requests (not broken)

Publisher bot protection, paywalls and rate limits. These work in a browser; listed only so they are not mistaken for breakage.

  • HTTP 429 (IMAGE) http://carnegieenergyinnovation.org/wp-content/uploads/2017/10/Possner-Caldeira_PNAS2017_FigS10augmented.png
  • HTTP 403 (IMAGE) https://science.sciencemag.org/content/sci/360/6396/eaas9793/F2.large.jpg?width=800&height=600&carousel=1
  • HTTP 403 (IMAGE) https://www.pnas.org/content/pnas/114/43/11338/F16.large.jpg
  • HTTP 403 (link) http://CarnegieEnergyInnovation.org
  • HTTP 403 (link) http://advances.sciencemag.org/content/1/8/e1500589
  • HTTP 429 (link) http://carnegieenergyinnovation.org/index.php/jobs/
  • HTTP 409 (link) http://climateenergylab.org
  • HTTP 403 (link) http://news-oceanacidification-icc.org/2015/08/26/a-plea-to-ocean-acidification-scientists/
  • HTTP 403 (link) http://pubs.rsc.org/en/Content/ArticleLanding/2018/EE/C7EE03029K
  • HTTP 403 (link) http://pubs.rsc.org/en/content/articlelanding/2018/ee/c7ee03029k
  • HTTP 403 (link) http://thinkprogress.org/climate/2012/03/12/442484/ken-caldeira-natural-gas-is-bridge-to-a-world-with-high-co2-levels-deployment-is-to-rampd-as-elephant-to-mouse/
  • HTTP 403 (link) http://thinkprogress.org/climate/2012/04/15/462803/caldeira-only-ethical-path-is-to-stop-using-the-atmosphere-as-a-waste-dump-for-greenhouse-gas-pollution/
  • HTTP 403 (link) http://thinkprogress.org/climate/2013/09/30/2699121/real-budget-crisis-co2/
  • HTTP 403 (link) http://www.pnas.org/content/112/49/15060
  • HTTP 403 (link) http://www.pnas.org/content/114/26/6722
  • HTTP 403 (link) http://www.pnas.org/content/114/26/6722#ref-11
  • HTTP 403 (link) http://www.pnas.org/content/early/2017/10/03/1705710114.full
  • HTTP 403 (link) http://www.pnas.org/content/suppl/2017/10/03/1705710114.DCSupplemental/pnas.201705710SI.pdf
  • HTTP 403 (link) http://www.presidency.ucsb.edu/ws/?pid=21611
  • HTTP 403 (link) http://www.sciencedirect.com/science/article/pii/S0301421517303130
  • HTTP 403 (link) http://www.sciencemag.org/news/2017/10/offshore-wind-farms-have-powerful-advantage-over-land-based-turbines-study-finds
  • HTTP 403 (link) https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/93PA01163
  • HTTP 403 (link) https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2012JG001974
  • HTTP 403 (link) https://agupubs.onlinelibrary.wiley.com/doi/pdf/10.1029/GL017i009p01299
  • HTTP 403 (link) https://arc.aiaa.org/doi/abs/10.2514/1.J053430
  • HTTP 403 (link) https://content.cld.iop.org/journals/1748-9326/18/10/104051/revision3/erlacf949supp1.pdf?Expires=1697457309&Signature=Kt4XMOGuVcKru3KkaqjQsjlsFO8of5p0Y8DaPHVqgWBruSutCFRkgr6j7UY5n0Sl9BgQ5ivC6woMpPflWY9E2AkA95amOa~KVkUU6b~xpbZlQoqjPu1mICOM1nuAo8iylQSxn3lyH4ErJER4C9GzP0EGJX0TQ4oH9ouGv2x~a5cnb63lq5s0pWvLc5aoS~65SAA8-qtYKv5m4ExVkppH2Y1BMZSrcPWtkl8~nXI9tk~LlfCMtC5bs-LnKFoyqyBMmkb4t5vVPZ622xod3zQX3yBW3~sGhuoztiVtJxuOihmmVtK~zEhj0VWUvBglVWxZWLOnlpJS6uwAicX8hgd0TQ__&Key-Pair-Id=KL1D8TIY3N7T8
  • HTTP 403 (link) https://kencaldeira.wordpress.com/2016/12/11/solving-the-coffee-and-climate-problems/
  • HTTP 403 (link) https://kencaldeira.wordpress.com/2016/12/12/coffee-and-climate-a-common-problem/
  • HTTP 403 (link) https://kencaldeira.wordpress.com/2019/02/10/carl-sagan-lecture-by-ken-caldeira-at-the-2018-fall-american-geophysical-union-meeting/
  • HTTP 403 (link) https://legionofhonor.famsf.org/
  • HTTP 403 (link) https://science.sciencemag.org/content/360/6396/eaas9793
  • HTTP 403 (link) https://support.crs.org/donate/donate-ukraine
  • HTTP 403 (link) https://travel.state.gov/content/dam/NEWadoptionassets/pdfs/Ukraine%20Fact%20Sheet%20Office%20of%20Children's%20Issues.pdf
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/Intercountry-Adoption.html
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/News/Intercountry-Adoption-News/ukraine---adoption-update.html
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/News/Intercountry-Adoption-News/ukraine---fact-sheet--how-you-can-help.html
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/News/Intercountry-Adoption-News/ukraine---fact-sheet--how-you-can-help.html#ExternalPopup
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/News/Intercountry-Adoption-News/ukraine---statement-by-department-of-state-s-special-advisor-for.html
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/News/visas-news/information-for-nationals-of-Ukraine.html
  • HTTP 403 (link) https://travel.state.gov/content/travel/en/international-travel/International-Travel-Country-Information-Pages/Ukraine.html
  • HTTP 403 (link) https://ukraine.iom.int/
  • HTTP 403 (link) https://uwaterloo.ca/environment/events/env-conversations-climate-expert-ken-caldeira
  • HTTP 403 (link) https://wires.onlinelibrary.wiley.com/doi/10.1002/wcc.754
  • HTTP 403 (link) https://www.cell.com/joule/abstract/S2542-4351(18)30225-3
  • HTTP 403 (link) https://www.cell.com/joule/fulltext/S2542-4351(18)30225-3
  • HTTP 401 (link) https://www.ecmwf.int/en/forecasts/dataset/ecmwf-reanalysis-v5
  • HTTP 403 (link) https://www.gatesnotes.com/About-Bill-Gates/Best-Books-2016
  • HTTP 403 (link) https://www.gatesnotes.com/About-Bill-Gates/Year-in-Review-2016
  • HTTP 403 (link) https://www.gatesnotes.com/Energy/Clean-Energy-is-Gaining-Momentum
  • HTTP 403 (link) https://www.nytimes.com/2017/04/28/opinion/climate-of-complete-certainty.html
  • HTTP 403 (link) https://www.nytimes.com/2017/06/30/climate/scott-pruitt-climate-change-red-team.html
  • HTTP 403 (link) https://www.pnas.org/content/114/43/11338
  • HTTP 403 (link) https://www.pnas.org/content/118/27/e2103875118
  • HTTP 401 (link) https://www.reuters.com/investigates/special-report/climate-change-scientists-caldeira/
  • HTTP 403 (link) https://www.science.org/doi/10.1126/sciadv.add3726
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/abs/pii/S0095069621000280
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/abs/pii/S0301421517303130
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/abs/pii/S0306261918311073
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/abs/pii/S0306261920314835
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/pii/S0142061514007765
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/pii/S0370269318301035
  • HTTP 403 (link) https://www.sciencedirect.com/science/article/pii/S2666792421000433