{"id":23152,"date":"2022-08-03T10:51:19","date_gmt":"2022-08-03T17:51:19","guid":{"rendered":"https:\/\/occupysf.net\/?p=23152"},"modified":"2022-08-03T10:51:21","modified_gmt":"2022-08-03T17:51:21","slug":"scientists-say-catastrophic-climate-scenarios-including-human-extinction-demand-further-study","status":"publish","type":"post","link":"https:\/\/occupysf.net\/index.php\/2022\/08\/03\/scientists-say-catastrophic-climate-scenarios-including-human-extinction-demand-further-study\/","title":{"rendered":"Scientists Say &#8216;Catastrophic&#8217; Climate Scenarios\u2014Including Human Extinction\u2014Demand Further Study"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.commondreams.org\/sites\/default\/files\/styles\/banner_image_1x_xl\/public\/2022-02\/Africa-Famine-Getty.jpg?h=0d474830&amp;itok=dNnSRyP4\" alt=\"Africa Drought \"\/><\/figure>\n\n\n\n<p><em>Kenyan pastoralists from the local Gabra community walk among carcasses of some of their sheep and goats on the outskirts of Kambi ya Nyoka in Marsabit County on January 29, 2022. (Photo: Tony Karumba\/AFP via Getty Images)<\/em><\/p>\n\n\n\n<p><strong>&#8220;Could anthropogenic climate change result in worldwide societal collapse or even eventual human extinction?&#8221; asks a new analysis. &#8220;At present, this is a dangerously underexplored topic.&#8221;<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/www.commondreams.org\/sites\/default\/files\/styles\/article_author\/public\/2021-06\/brett-wilkins-200x200.jpg?h=55541bb6&amp;itok=st0jtEJy\" alt=\"\"\/><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.commondreams.org\/author\/brett-wilkins\">BRETT WILKINS<\/a> August 2, 2022 (CommonDreams.org)<\/p>\n\n\n\n<p><strong>The worst-case outcomes of<\/strong>&nbsp;an unmitigated climate emergency\u2014civilizational collapse or even human extinction\u2014are &#8220;dangerously underexplored&#8221; scenarios requiring further study, an analysis published Monday asserted.<\/p>\n\n\n\n<p>&#8220;There is ample evidence that climate change could become catastrophic. We could enter such &#8216;endgames&#8217; at even modest levels of warming.&#8221;<\/p>\n\n\n\n<p>In a&nbsp;<a href=\"https:\/\/www.pnas.org\/doi\/full\/10.1073\/pnas.2108146119\">perspective<\/a>&nbsp;published in the&nbsp;<em>Proceedings of the National Academy of Sciences<\/em>, climate scientists Luke Kemp, Chi Xu, Joanna Depledge, and Timothy M. Lenton argue that humanity must prepare for what they call the &#8220;climate endgame.&#8221;<\/p>\n\n\n\n<p>&#8220;It is time for the scientific community to grapple with the challenge of better understanding catastrophic climate change,&#8221; the researchers write.<\/p>\n\n\n\n<p>Although climate scientists say such catastrophic consequences are unlikely, the paper&#8217;s authors caution that &#8220;facing a future of accelerating climate change while blind to worst-case scenarios is na\u00efve risk management at best and fatally foolish at worst.&#8221;<\/p>\n\n\n\n<p>&#8220;There is ample evidence that climate change could become catastrophic. We could enter such &#8216;endgames&#8217; at even modest levels of warming,&#8221; they warn. &#8220;Understanding extreme risks is important for robust decision-making, from preparation to consideration of emergency responses.&#8221;<\/p>\n\n\n\n<p>&#8220;This requires exploring not just higher temperature scenarios but also the potential for climate change impacts to contribute to systemic risk and other cascades,&#8221; the authors add. &#8220;We suggest that it is time to seriously scrutinize the best way to expand our research horizons to cover this field.&#8221;<\/p>\n\n\n\n<p><blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">New paper from <a href=\"https:\/\/twitter.com\/LukaKemp?ref_src=twsrc%5Etfw\">@LukaKemp<\/a> in PNAS &#39;Climate Endgame: Exploring catastrophic climate change scenarios&#39; <a href=\"https:\/\/t.co\/MihpWqUF8s\">https:\/\/t.co\/MihpWqUF8s<\/a><\/p>&mdash; Centre for the Study of Existential Risk (@CSERCambridge) <a href=\"https:\/\/twitter.com\/CSERCambridge\/status\/1554222663249195009?ref_src=twsrc%5Etfw\">August 1, 2022<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n\n\n\n<p>The scientists propose a research agenda that seeks to answer four main questions:<\/p>\n\n\n\n<ul><li>What is the potential for climate change to drive mass extinction events?<\/li><li>What are the mechanisms that could result in human mass mortality and morbidity?<\/li><li>What are human societies&#8217; vulnerabilities to climate-triggered risk cascades, such as from conflict, political instability, and systemic financial risk?<\/li><li>How can these multiple strands of evidence\u2014together with other global dangers\u2014be usefully synthesized into an &#8220;integrated catastrophe assessment?&#8221;<\/li><\/ul>\n\n\n\n<p>&#8220;Knowing the worst cases can compel action, as the idea of &#8216;nuclear winter&#8217; in 1983 galvanized public concern and nuclear disarmament efforts,&#8221; the analysis states. &#8220;Exploring severe risks and higher-temperature scenarios could cement a recommitment to the 1.5\u2009\u00b0C to 2\u2009\u00b0C guardrail&#8221; that the Paris climate agreement says is imperative to avoid an irreversible climate catastrophe.<\/p>\n\n\n\n<p>&#8220;I think it&#8217;s sane risk management to think about the plausible worst-case scenarios and we do it when it comes to every other situation, we should definitely do when it comes to the fate of the planet and species,&#8221; study lead author Luke Kemp, a researcher at the University of Cambridge in England,&nbsp;<a href=\"https:\/\/www.bbc.com\/news\/science-environment-62378157\">told<\/a>&nbsp;the&nbsp;<em>BBC<\/em>.<\/p>\n\n\n\n<p><blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">New paper in PNAS on worst-case climate change<br><br>I think we have to clearly communicate risks and also say: We still have it in our hands. We have the technologies, we know the policies. It is cheaper and necessary to immediately act on climate change.<br> <a href=\"https:\/\/t.co\/Gu5CDqFobh\">https:\/\/t.co\/Gu5CDqFobh<\/a><\/p>&mdash; Niklas H\u00f6hne (@niklashoehne) <a href=\"https:\/\/twitter.com\/niklashoehne\/status\/1554206399059709961?ref_src=twsrc%5Etfw\">August 1, 2022<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n\n\n\n<p>In a separate interview with&nbsp;<em>The Guardian<\/em>, Kemp&nbsp;<a href=\"https:\/\/www.theguardian.com\/environment\/2022\/aug\/01\/climate-endgame-risk-human-extinction-scientists-global-heating-catastrophe\">said<\/a>&nbsp;that &#8220;paths to disaster are not limited to the direct impacts of high temperatures, such as extreme weather events. Knock-on effects such as financial crises, conflict, and new disease outbreaks could trigger other calamities.&#8221;<\/p>\n\n\n\n<p>Study co-author Xu of Nanjing University in China told the&nbsp;<em>BBC<\/em>&nbsp;that &#8220;average annual temperatures of 29\u00b0C currently affect around 30 million people in the Sahara and Gulf Coast.&#8221;<\/p>\n\n\n\n<p>&#8220;By 2070, these temperatures and the social and political consequences will directly affect two nuclear powers, and seven maximum containment laboratories housing the most dangerous pathogens,&#8221; he added. &#8220;There is serious potential for disastrous knock-on effects.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kenyan pastoralists from the local Gabra community walk among carcasses of some of their sheep and goats on the outskirts of Kambi ya Nyoka in Marsabit County on January 29, 2022. (Photo: Tony Karumba\/AFP via Getty Images) &#8220;Could anthropogenic climate change result in worldwide societal collapse or even eventual human&#8230; <a class=\"continue-reading-link\" href=\"https:\/\/occupysf.net\/index.php\/2022\/08\/03\/scientists-say-catastrophic-climate-scenarios-including-human-extinction-demand-further-study\/\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/posts\/23152"}],"collection":[{"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/comments?post=23152"}],"version-history":[{"count":1,"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/posts\/23152\/revisions"}],"predecessor-version":[{"id":23153,"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/posts\/23152\/revisions\/23153"}],"wp:attachment":[{"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/media?parent=23152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/categories?post=23152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/occupysf.net\/index.php\/wp-json\/wp\/v2\/tags?post=23152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}