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#tippingpoint

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KUVO Playlist<p>5:06am Tipping Point by Michael Dease from Reaching Out<br><a href="https://mastodon.social/tags/MichaelDease" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MichaelDease</span></a> <a href="https://mastodon.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a> <a href="https://mastodon.social/tags/JazzNetwork" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JazzNetwork</span></a> <a href="https://mastodon.social/tags/KUVO" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>KUVO</span></a></p>
Steve Paradis<p>A change in the southern ocean can have climate implications <a href="https://thecanadian.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a> <a href="https://www.youtube.com/watch?v=NgyZVMIaYAM" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=NgyZVMIaYAM</span><span class="invisible"></span></a> </p><p><a href="https://thecanadian.social/tags/MassExtinction" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MassExtinction</span></a> <a href="https://thecanadian.social/tags/ecology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecology</span></a> <a href="https://thecanadian.social/tags/environment" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>environment</span></a> <a href="https://thecanadian.social/tags/Climate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Climate</span></a> <a href="https://thecanadian.social/tags/ClimateJustice" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateJustice</span></a> <a href="https://thecanadian.social/tags/EndFossilFuels" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EndFossilFuels</span></a> <a href="https://thecanadian.social/tags/ClimateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateEmergency</span></a> <a href="https://thecanadian.social/tags/ClimateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateChange</span></a> <a href="https://thecanadian.social/tags/ClimateCrisis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateCrisis</span></a> <a href="https://thecanadian.social/tags/ClimateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateBreakdown</span></a></p>
sheislaurence<p>1/3🧵: This is how <a href="https://mastodon.social/tags/protest" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>protest</span></a> movements reach a <a href="https://mastodon.social/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a> 🥲. <a href="https://mastodon.social/tags/Edinburgh" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Edinburgh</span></a> <a href="https://mastodon.social/tags/university" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>university</span></a>, a <a href="https://mastodon.social/tags/uni" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>uni</span></a> that was named in the <a href="https://mastodon.social/tags/UN" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>UN</span></a> Special Rapporteur Francesca Albanese's report about <a href="https://mastodon.social/tags/Gaza" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Gaza</span></a> <a href="https://mastodon.social/tags/genocide" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>genocide</span></a> enablers, saw its PhD <a href="https://mastodon.social/tags/students" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>students</span></a> walk out en masse from their own <a href="https://mastodon.social/tags/graduation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>graduation</span></a> ceremony on Friday. Hear those who think they are the majority shout "shut up" until they come to realise the majority is loudly, clearly and beautifully supporting <a href="https://mastodon.social/tags/Palestine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Palestine</span></a> and <a href="https://mastodon.social/tags/divestment" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>divestment</span></a>. <br><a href="https://www.ucuedinburgh.org.uk/blog/7nhe6nfect3a9djkczclnakgp6m9zc" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">ucuedinburgh.org.uk/blog/7nhe6</span><span class="invisible">nfect3a9djkczclnakgp6m9zc</span></a></p>
O=C=O<p>Der Klimawandel könnte schlafende Vulkane wecken</p><p> Wenn <a href="https://climatejustice.social/tags/Gletscher" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Gletscher</span></a> weltweit schmelzen, drohen nicht nur lebenswichtige Wasserreservoire zu versiegen: Wie Forschende berichten, könnte die Eisschmelze zu mehr Vulkanausbrüchen führen – was wiederum den <a href="https://climatejustice.social/tags/Klimawandel" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Klimawandel</span></a> weiter anheizt.</p><p>Das Team der Universität von Wisconsin-Madison, USA, untersuchte in Patagonien, im Süden <a href="https://climatejustice.social/tags/Chile" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Chile</span></a>'s, einen Komplex von sechs Vulkanen. Besonderes Augenmerk legten sie auf den Zusammenhang zwischen Eisbedeckung und vulkanischer Aktivität. Analysen von Eruptivgestein zeigten, dass der Eispanzer während des Maximums der jüngsten Kaltzeit, etwa vor 26.000 bis 18.000 Jahren, vulkanische Aktivität buchstäblich unterdrückt haben musste – während sich in einer Tiefe von zehn bis 15 Kilometern unter der Erdoberfläche kieselsäurereiches <a href="https://climatejustice.social/tags/Magma" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Magma</span></a> sammelte.</p><p>Das rasche Schmelzen des Gletschereises am Ende der Kaltzeit führte dann zu einer Entlastung der Magmakammern. Gase im flüssigen Gestein dehnten sich aus, der steigende Druck trieb das Magma an die Erdoberfläche – und ließ in der Folge die <a href="https://climatejustice.social/tags/Vulkane" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Vulkane</span></a> des Komplexes entstehen, darunter den derzeit schlafenden <a href="https://climatejustice.social/tags/Vulkan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Vulkan</span></a> <a href="https://climatejustice.social/tags/MochoChoshuenco" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MochoChoshuenco</span></a>....</p><p><a href="https://www.geo.de/wissen/der-klimawandel-koennte-schlafende-vulkane-wecken-35880628.html?utm_source=firefox-newtab-de-de" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">geo.de/wissen/der-klimawandel-</span><span class="invisible">koennte-schlafende-vulkane-wecken-35880628.html?utm_source=firefox-newtab-de-de</span></a></p><p><a href="https://climatejustice.social/tags/Erdwissenschaften" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Erdwissenschaften</span></a> <br><a href="https://climatejustice.social/tags/Klimakatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Klimakatastrophe</span></a> <br><a href="https://climatejustice.social/tags/Kryosph%C3%A4re" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Kryosphäre</span></a> <br><a href="https://climatejustice.social/tags/R%C3%BCckkopplung" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Rückkopplung</span></a> <br><a href="https://climatejustice.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a></p>
ApaulD<p><span class="h-card" translate="no"><a href="https://social.linux.pizza/@marjolica" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>marjolica</span></a></span> <br>this report infers that the change in salinity indicates circulation has reversed. <a href="https://iefworld.org/SMOCreversal2025" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">iefworld.org/SMOCreversal2025</span><span class="invisible"></span></a><br><a href="https://aus.social/tags/ocean" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ocean</span></a> <a href="https://aus.social/tags/climatechange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climatechange</span></a> <a href="https://aus.social/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a><br>“sustained increase in surface salinity has been detected in the region between the polar and subpolar gyres of the Antarctic Ocean. <br>👇<br>This change in water composition suggests that the deep ocean circulation in the Southern Hemisphere — known as the SMOC — is not only being altered, but has reversed.”</p>
C Martínez<p>Prof. Stefan Rahmstorf<br>‪@rahmstorf.bsky.social‬</p><p>Seguir<br>Fascinating and important for our future: the European Space Agency ESA plans to monitor changes in the Atlantic Ocean Circulation <a href="https://mastodon.social/tags/AMOC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AMOC</span></a> from satellite with a new gravity mission. <br>That is important since the AMOC may be approaching a dangerous <a href="https://mastodon.social/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a>. 🌊</p><p>www.esa.int/Applications...</p><p><a href="https://bsky.app/profile/rahmstorf.bsky.social/post/3lte6tagwqc2y" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">bsky.app/profile/rahmstorf.bsk</span><span class="invisible">y.social/post/3lte6tagwqc2y</span></a></p>
Ivi Choc<p><a href="https://mastodon.online/tags/FYI" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FYI</span></a> <a href="https://mastodon.online/tags/AmericanResiliency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AmericanResiliency</span></a> <a href="https://mastodon.online/tags/EmilySchoerning" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EmilySchoerning</span></a> <a href="https://mastodon.online/tags/resilience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>resilience</span></a> <a href="https://mastodon.online/tags/USA" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>USA</span></a> <a href="https://mastodon.online/tags/OceanCirculation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OceanCirculation</span></a> <a href="https://mastodon.online/tags/Antarctic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Antarctic</span></a> <a href="https://mastodon.online/tags/SMOC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SMOC</span></a> <a href="https://mastodon.online/tags/reverse" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>reverse</span></a> <a href="https://mastodon.online/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a></p><p>Dr. Emily Schoerning on the reversed Southern Meridional Overturning Circulation, the science, the meaning and our necessary actions to prepare.</p><p><a href="https://www.youtube.com/watch?v=Ig3wPQg9HN8" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="">youtube.com/watch?v=Ig3wPQg9HN8</span><span class="invisible"></span></a></p><p><a href="https://mastodon.online/tags/ClimateScience" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateScience</span></a> <a href="https://mastodon.online/tags/climatechange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climatechange</span></a> <a href="https://mastodon.online/tags/ClimateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateEmergency</span></a> <a href="https://mastodon.online/tags/ClimateCrisis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateCrisis</span></a> <a href="https://mastodon.online/tags/ClimateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateBreakdown</span></a> <a href="https://mastodon.online/tags/climatecatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climatecatastrophe</span></a> <a href="https://mastodon.online/tags/globalWarming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>globalWarming</span></a> <a href="https://mastodon.online/tags/globalHeating" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>globalHeating</span></a> <a href="https://mastodon.online/tags/ExtremeWeather" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ExtremeWeather</span></a> <a href="https://mastodon.online/tags/EcosystemCollapse" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EcosystemCollapse</span></a> <a href="https://mastodon.online/tags/systemcollapse" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>systemcollapse</span></a> <a href="https://mastodon.online/tags/ecocide" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecocide</span></a> <a href="https://mastodon.online/tags/fossilfuels" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fossilfuels</span></a> <a href="https://mastodon.online/tags/Co2" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Co2</span></a></p>
Prof. Stefan Rahmstorf<p>Fascinating and important for our future: the European Space Agency ESA plans to monitor changes in the Atlantic Ocean Circulation <a href="https://fediscience.org/tags/AMOC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AMOC</span></a> from satellite with a new gravity mission. <br>That is important since the AMOC may be approaching a <a href="https://fediscience.org/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a>.</p><p><a href="https://www.esa.int/Applications/Observing_the_Earth/FutureEO/New_ESA_gravity_mission_to_detect_weakening_ocean_conveyor" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">esa.int/Applications/Observing</span><span class="invisible">_the_Earth/FutureEO/New_ESA_gravity_mission_to_detect_weakening_ocean_conveyor</span></a></p>
OccuWorld<p>Southern Ocean current reverses for first time, signalling risk of climate system collapse</p><p><a href="https://www.intellinews.com/southern-ocean-current-reverses-for-first-time-signalling-risk-of-climate-system-collapse-389540/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">intellinews.com/southern-ocean</span><span class="invisible">-current-reverses-for-first-time-signalling-risk-of-climate-system-collapse-389540/</span></a></p><p>A major ocean current in the Southern Hemisphere has reversed direction for the first time in recorded history, in what climatologists are calling a “catastrophic” tipping point in the global climate system.</p><p><a href="https://syzito.xyz/tags/ClimateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateEmergency</span></a> <a href="https://syzito.xyz/tags/OceanCurrent" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>OceanCurrent</span></a> <a href="https://syzito.xyz/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a> <a href="https://syzito.xyz/tags/ReverseDirection" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ReverseDirection</span></a> <a href="https://syzito.xyz/tags/DWBC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DWBC</span></a> <a href="https://syzito.xyz/tags/AMOC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>AMOC</span></a> <a href="https://syzito.xyz/tags/Runaway" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Runaway</span></a> <a href="https://syzito.xyz/tags/Collapse" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Collapse</span></a></p>
Palm Oil Detectives<p><a href="https://mastodonapp.uk/tags/Research" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Research</span></a> finds once a <a href="https://mastodonapp.uk/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a> is reached, an <a href="https://mastodonapp.uk/tags/ecosystem" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ecosystem</span></a> will collapse much faster than first thought. A coral reef ecosystem could take 15 years, the Amazon rainforest 49 years to collapse. Be <a href="https://mastodonapp.uk/tags/vegan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vegan</span></a> 🥦🍅<a href="https://mastodonapp.uk/tags/Boycott4Wildlife" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Boycott4Wildlife</span></a> 🌴🩸❌ @palmoildetect<br><a href="https://palmoildetectives.com/2021/05/26/huge-ecosystems-could-collapse-in-less-than-50-years-new-study/?utm_source=mastodon&amp;utm_medium=Palm+Oil+Detectives&amp;utm_campaign=publer" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">palmoildetectives.com/2021/05/</span><span class="invisible">26/huge-ecosystems-could-collapse-in-less-than-50-years-new-study/?utm_source=mastodon&amp;utm_medium=Palm+Oil+Detectives&amp;utm_campaign=publer</span></a></p>
anlomedad<p>A new paper argues that tropical forests 252Ma (million years ago) got eliminated and this elimination caused Earth to cross a <a href="https://climatejustice.social/tags/climate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climate</span></a> tipping point.</p><p>From the Introduction: "The latest Permian to Early Triassic was a period of intense environmental and biotic stress. During the Permian–Triassic Mass Extinction (PTME) at ~252 Ma, around 81–94% of marine invertebrate species and 89% of terrestrial tetrapod genera became extinct. It is generally agreed that the PTME was driven by volcanogenic carbon emissions from Siberian Traps volcanism, potentially coupled with additional thermogenic releases, resulting in intense greenhouse warming."<br><a href="https://www.nature.com/articles/s41467-025-60396-y" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41467-025</span><span class="invisible">-60396-y</span></a> "Early Triassic super-greenhouse climate driven by vegetation collapse" by Zhen Xu et al 2025</p><p>Pic 1 shows the Earth system configuration at 250Ma (a different planet so don't try to apply their findings to today's Earth😁 )</p><p>Judd, Tierney's CO2 and temperature evolution go separate ways at 250Ma.<br> CO2 concentration directly after the mass extinction event is badly constraint, uncertainty spans from 2000 down to 200ppm.<br>This large uncertainty makes it indeed possible that "intense greenhouse warming" followed the mass extinction at 250Ma. But the uncertainty span also allows the hypothesis that GHG were not responsible for the temperature rise 250Ma, and that there was no "super-greenhouse climate" nor "driven by vegetation collapse". </p><p>What then?<br>I am reminded&nbsp;of <a href="https://www.nature.com/articles/s41550-024-02279-8" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">nature.com/articles/s41550-024</span><span class="invisible">-02279-8</span></a> "A possible direct exposure of the Earth to the cold dense interstellar medium 2–3 Myr ago" by Opher et al 2024.<br>This study, and a few others published by the same team last year, took the software <a href="https://climatejustice.social/tags/Gaia" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Gaia</span></a> by ESA and saw that our solar system was visited by –&nbsp;or travelled through –&nbsp;a cloud of hydrogen in that time, precisely 4 million years ago to ~700 thousand years ago. <br>Their paper comes with an interactive app to see when it started and ended <a href="https://faun.rc.fas.harvard.edu/czucker/Paper_Figures/Interactive_LxCC.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">faun.rc.fas.harvard.edu/czucke</span><span class="invisible">r/Paper_Figures/Interactive_LxCC.html</span></a><br> <br>At 2.7Ma, the cloud was so dense that it shrank the heliosphere which otherwise protects Earth from cosmic radiation. <br>Further more, the cloud's hydrogen destroys Earth's ozone layer in the stratosphere and in the mesosphere.</p><p>A destroyed ozone layer causes mutations in organisms, eg. cancers, and increases insolation = heats up the planet.</p><p>Above the stratosphere is the earth's washing machine where OH radicals bomb <a href="https://climatejustice.social/tags/methane" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>methane</span></a> molecules and other gases to bits. <br>I don't know how the abundance of OH radicals is affected by increased exposure to cosmic rays. I only mention it as a potential additional factor for temperature evolution during a cloud traversal. </p><p>"Polar mesospheric ozone becomes significantly depleted, but the total ozone column broadly increases. Furthermore, we show that the densest NLCs lessen the amount of sunlight reaching the surface instantaneously by up to 7% while halving outgoing longwave radiation." from <a href="https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024GL110174" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">agupubs.onlinelibrary.wiley.co</span><span class="invisible">m/doi/full/10.1029/2024GL110174</span></a> "Earth's Mesosphere During Possible Encounters With Massive Interstellar Clouds 2 and 7 Million Years Ago" by Miller, Opher et al 2024 (same team as above). <br>More Ozone in the total column = more heating (as opposed to ozone in the stratosphere/mesosphere where it serves as coolant by deflecting sunlight back into space). <br>"Halving outgoing longwave radiation" by NLC= noctilucent clouds (see pic 2) is also a warming factor. </p><p>Now, maybe this hydrogen cloud was a small one which affected our sun's <a href="https://climatejustice.social/tags/heliosphere" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>heliosphere</span></a> from 4 million years ago to 700thousand years ago. </p><p>Maybe, the galactic region through which our <a href="https://climatejustice.social/tags/SolarSystem" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>SolarSystem</span></a> hurls is also home to larger clouds, and maybe, 250Ma our sun and Earth encountered such a larger one. <br>Large enough to have enough time to raise temperature by 10°C for a couple million years –&nbsp;in that particular Earth land-oceans-biomes configuration in 250Ma.</p><p>And maybe, this was also just when lotsa radioactive stuff from a <a href="https://climatejustice.social/tags/supernova" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>supernova</span></a> happened to fly through space as well. <br>Which then added to the mutations from the vanished ozone layer. <br>=Mass extinction. </p><p>Radioactive stuff from supernovae is found in Earth crust as 60Fe and 244Pu. They have half-lives of 2.62mio and 8mio years respectively. <br>And indeed, their abundance increases during the period of the most recent known "Gaia cloud" traversal: <br>"Our results show that the 60Fe signal onset occurs around 2.6 Ma to 2.8 Ma, near the lower Pleistocene boundary, terminates around 1.7 Ma, and peaks at about 2.2 Ma." <a href="https://www.pnas.org/doi/abs/10.1073/pnas.1601040113" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">pnas.org/doi/abs/10.1073/pnas.</span><span class="invisible">1601040113</span></a> "Time-resolved 2-million-year-old supernova activity discovered in Earth’s microfossil record" by Ludwig et al 2016. </p><p>Sadly, these half lives are too short to use as proxy for a potential cloud traversal in 250Ma. <br>But maybe, <a href="https://climatejustice.social/tags/astrophysics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>astrophysics</span></a> can think of a similar proxy and <a href="https://climatejustice.social/tags/geology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>geology</span></a> can search for it?</p><p><a href="https://climatejustice.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a> <a href="https://climatejustice.social/tags/atmosphere" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>atmosphere</span></a> <a href="https://climatejustice.social/tags/chemistry" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>chemistry</span></a> <a href="https://climatejustice.social/tags/PaleoClimate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PaleoClimate</span></a></p>
TobeB<p>Drought is pushing tens of millions of people to the edge of starvation around the world, in a foretaste of a global crisis that is rapidly deepening with climate breakdown.</p><p><a href="https://climatejustice.social/tags/climateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateChange</span></a> <a href="https://climatejustice.social/tags/climateCatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateCatastrophe</span></a> <a href="https://climatejustice.social/tags/climateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateEmergency</span></a> <a href="https://climatejustice.social/tags/climateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateBreakdown</span></a> <a href="https://climatejustice.social/tags/tippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingPoint</span></a></p><p><a href="https://www.theguardian.com/environment/2025/jul/02/droughts-worldwide-pushing-tens-millions-starvation-report" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/20</span><span class="invisible">25/jul/02/droughts-worldwide-pushing-tens-millions-starvation-report</span></a></p>
TobeB<p>Elisa Morgera, UN special rapporteur on human rights and climate change, urges governments to criminalize fossil fuel disinformation, ban fossil fuel lobbying and advertising, and rapidly phase out oil, gas, and coal by 2030. </p><p>In her new report, presented to the UN, she holds wealthy nations legally responsible for the devastating human rights harms caused by decades of fossil fuel dependence.</p><p><a href="https://climatejustice.social/tags/climateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateChange</span></a> <a href="https://climatejustice.social/tags/climateCatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateCatastrophe</span></a> <a href="https://climatejustice.social/tags/climateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateEmergency</span></a> <a href="https://climatejustice.social/tags/climateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateBreakdown</span></a> <a href="https://climatejustice.social/tags/tippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingPoint</span></a></p><p><a href="https://www.theguardian.com/environment/2025/jun/30/un-expert-urges-criminalizing-fossil-fuel-disinformation-banning-lobbying" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/20</span><span class="invisible">25/jun/30/un-expert-urges-criminalizing-fossil-fuel-disinformation-banning-lobbying</span></a></p>
TobeB<p>Can the world cut greenhouse gas emissions far enough and fast enough to stabilise global temperatures?</p><p>Beyond 1.5C of heating, the impacts of climate chaos – heatwaves, sea level rises, species die-offs, droughts, floods and storms – will rapidly become catastrophic and irreversible. And we now know that the world could already be traversing vital “tipping points”, beyond which runaway climate change will be impossible to recover from within human timeframes.</p><p><a href="https://climatejustice.social/tags/climateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateChange</span></a> <a href="https://climatejustice.social/tags/climateCatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateCatastrophe</span></a> <a href="https://climatejustice.social/tags/climateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateEmergency</span></a> <a href="https://climatejustice.social/tags/climateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateBreakdown</span></a> <a href="https://climatejustice.social/tags/tippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingPoint</span></a></p><p><a href="https://www.theguardian.com/environment/2025/jun/29/climate-is-our-biggest-war-warns-ceo-of-cop30-ahead-of-un-summit-in-brazil" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/20</span><span class="invisible">25/jun/29/climate-is-our-biggest-war-warns-ceo-of-cop30-ahead-of-un-summit-in-brazil</span></a></p>
TobeB<p>Stalled atmospheric patterns have tripled over the last 70 years and will get worse as the planet warms. Climate models predicted this, but now we’re seeing it happen.</p><p>Human-caused climate change made the recent heatwaves 5x more likely, according to Climate Central. And by mid-century, today’s extremes could become the new normal. The extremes will be even higher.</p><p><a href="https://climatejustice.social/tags/climateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateChange</span></a> <a href="https://climatejustice.social/tags/climateCatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateCatastrophe</span></a> <a href="https://climatejustice.social/tags/climateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateEmergency</span></a> <a href="https://climatejustice.social/tags/climateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateBreakdown</span></a> <a href="https://climatejustice.social/tags/tippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingPoint</span></a></p><p><a href="https://www.theguardian.com/environment/2025/jun/28/us-heatwave-climate-crisis" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/20</span><span class="invisible">25/jun/28/us-heatwave-climate-crisis</span></a></p>
Killer Rabbit 90<p>‘Positive cascades could help accelerate change’: social tipping points expert on fixing climate crisis <a href="https://www.theguardian.com/environment/ng-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/ng</span><span class="invisible">-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis</span></a> <a href="https://mastodon.social/tags/ClimateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateChange</span></a> <a href="https://mastodon.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a> <a href="https://mastodon.social/tags/ClimateCrisis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateCrisis</span></a> <a href="https://mastodon.social/tags/GreenEnergyNow" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GreenEnergyNow</span></a> <a href="https://mastodon.social/tags/FossilFuelCriminals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>FossilFuelCriminals</span></a></p>
Fotas<p>"...los riesgos de punto de inflexión son reales y potencialmente existenciales. Si se produce un punto de inflexión en el océano Atlántico -el llamado Amoc- podríamos perder más de la mitad de la superficie destinada a cultivos básicos en todo el mundo. Provocaría crisis de seguridad hídrica y perturbaría gravemente los monzones en África occidental y la India, lo que afectaría a miles de millones de personas."</p><p><a href="https://www.theguardian.com/environment/ng-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/ng</span><span class="invisible">-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis</span></a></p><p><a href="https://mastodon.social/tags/Clima" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Clima</span></a> <a href="https://mastodon.social/tags/CrisisClim%C3%A1tica" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CrisisClimática</span></a> <a href="https://mastodon.social/tags/ColapsoClim%C3%A1tico" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ColapsoClimático</span></a> <a href="https://mastodon.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a></p>
Rhinos Worry Me<p>"...tipping point risks are real and potentially existential. If we have a tipping point in the Atlantic Ocean – the so-called Amoc – we could lose more than half the area for growing staple crops worldwide. It would cause water security crises and severely disrupt the monsoons in west Africa and India, which would affect billions of people."</p><p><a href="https://www.theguardian.com/environment/ng-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/ng</span><span class="invisible">-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis</span></a></p><p><a href="https://climatejustice.social/tags/Climate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Climate</span></a> <a href="https://climatejustice.social/tags/ClimateCrisis" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateCrisis</span></a> <a href="https://climatejustice.social/tags/ClimateCollapse" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ClimateCollapse</span></a> <a href="https://climatejustice.social/tags/TippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>TippingPoint</span></a></p>
TobeB<p>Leading scientist Timothy Lenton warns: We’ve underestimated just how close we are to dangerous, irreversible climate shifts, like melting ice sheets, dying coral reefs, and disrupted ocean currents.</p><p>But positive tipping points are real too. Solar power and electric vehicles are now in self-propelling growth. Renewable tech is getting cheaper, faster and social movements show we can turn the tide. It's time to act.</p><p><a href="https://climatejustice.social/tags/climateChange" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateChange</span></a> <a href="https://climatejustice.social/tags/climateCatastrophe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateCatastrophe</span></a> <a href="https://climatejustice.social/tags/climateEmergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateEmergency</span></a> <a href="https://climatejustice.social/tags/climateBreakdown" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climateBreakdown</span></a> <a href="https://climatejustice.social/tags/tippingPoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingPoint</span></a></p><p><a href="https://www.theguardian.com/environment/ng-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/ng</span><span class="invisible">-interactive/2025/jun/28/tipping-points-social-expert-on-fixing-climate-crisis</span></a></p>
Gerard van Oel 🍋<p>Groot stuk in de Guardian over Klimaat in het algemeeen en Climate Tipping Points in het bijzonder, met links naar meer informatie. <br><a href="https://www.theguardian.com/environment/ng-interactive/2025/jun/24/tipping-points-climate-crisis-expert-doomerism-wealth" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">theguardian.com/environment/ng</span><span class="invisible">-interactive/2025/jun/24/tipping-points-climate-crisis-expert-doomerism-wealth</span></a><br><a href="https://mastodon.green/tags/klimaat" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>klimaat</span></a> <a href="https://mastodon.green/tags/climate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>climate</span></a> <a href="https://mastodon.green/tags/tippingpoint" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tippingpoint</span></a></p>
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