📺This channel is 100% independent. Please consider helping us here: https://fr.tipeee.com/circular-metabolism-podcastThere is an essential and yet poorly understood concept in climate science: tipping points.Several climate tipping points (like ice loss in Greenland and Antarctica or the slowdown of the Atlantic circulation) are dangerously close and run the risk of triggering a "tipping cascade".To understand these risks and know how to keep us in a safe space through positive tipping points, we are talking with Professor Tim Lenton. Tim Lenton is Chair in Climate Change and Earth System Science at the University of Exeter. 🔷 CHAPTERS00:00 Introduction05:33 The Earth system11:18 Vital signs of the system15:28 Tipping points29:00 Irreversibility32:34 Civilizational tipping points35:08 Early warning signals38:31 Socio-ecological tipping points44:19 Positive tipping points🔷 REFERENCESRecommended books:• Gaia, a new look at life on earth (1979) James Lovelock• The Ages of Gaia (1988), James LovelockScientific articles:• Lenton's tipping points article (paywall): https://www.nature.com/articles/d41586-019-03595-0• Planetary boundaries: https://www.stockholmresilience.org/research/planetary-boundaries.html• Social tipping points (the "25% rule"): https://pubmed.ncbi.nlm.nih.gov/29880688/🔷 MAIN TAKEAWAYS• Map of the tipping elements (HD): https://i.ibb.co/DbKqshq/elements.png2 main views:• Object (thing) perspective: seeing the system's elements as static and well defined (better spatial accuracy, worse temporal fidelity)• Process perspective: seeing the system's elements as changing and interconnected (better temporal fidelity, worse spatial accuracy)Types of feedback loops: • Damping feedback (provides stability)• Amplifying feedback (creates possible instability)Types of cycles:• Real cycles made of material flows• Causal cycles made of causal chains between eventsTipping point: • Threshold of an amplifying feedback loop beyond which change becomes self-propelling• Happen when the damping feedbacks get weaker than the amplifying feedbacks (variability increases)🎤 Interview: Aristide Athanassiadis🎞️ Editing: https://codexprod.fr-------------------------------------------------------------------------------------------------🔷 LINKS👀 Youtube: https://youtu.be/_ZrErfqDwTA💌 Newsletter: https://www.circularmetabolism.com/👂 iTunes: https://podcasts.apple.com/be/podcast/circular-metabolism-podcast/id1455115320👂 Spotify: https://open.spotify.com/show/13qH9Oj4b0yF0dBidGAdFR🙏 Tipeee: https://fr.tipeee.com/circular-metabolism-podcast Hébergé par Acast. Visitez acast.com/privacy pour plus d'informations.

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