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Human pressures have pushed the Earth system deep into the Anthropocene, threatening its stability, resilience and functioning. The Planetary Boundaries (PB) framework emerged against these threats, setting safe levels to the biophysical systems and processes that, with high likelihood, ensure life-supporting Holocene-like conditions. In this Review, we synthesize PB advancements, detailing its emergence and mainstreaming across scientific disciplines and society. The nine PBs capture the key functions regulating the Earth system. The safe operating space has been transgressed for six of these. PB science is essential to prevent further Earth system risks and has sparked new research on the precision of safe boundaries. Human development within planetary boundaries defines sustainable development, informing advances in social sciences. Each PB translates to a finite budget that the world must operate within, requiring strengthened global governance. The PB framework has been adopted by businesses and informed

Over the past 50 years, humans have extracted the Earth’s groundwater stocks at a steep rate, largely to fuel global agro-economic development. Given society’s growing reliance on groundwater, we explore ‘peak water limits’ to investigate whether, when and where humanity might reach peak groundwater extraction. Using an integrated global model of the coupled human–Earth system, we simulate groundwater withdrawals across 235 water basins under 900 future scenarios of global change over the twenty-first century. Here we find that global non-renewable groundwater withdrawals exhibit a distinct peak-and-decline signature, comparable to historical observations of other depletable resources (for example, minerals), in nearly all (98%) scenarios, peaking on average at 625 km3 yr−1 around mid-century, followed by a decline through 2100. The peak and decline occur in about one-third (82) of basins, including 21 that may have already peaked, exposing about half (44%) of the global population to groundwater stress. Most

Evidence shows a continuing increase in the frequency and severity of global heatwaves1,2, raising concerns about the future impacts of climate change and the associated socioeconomic costs3,4. Here we develop a disaster footprint analytical framework by integrating climate, epidemiological and hybrid input–output and computable general equilibrium global trade models to estimate the midcentury socioeconomic impacts of heat stress. We consider health costs related to heat exposure, the value of heat-induced labour productivity loss and indirect losses due to economic disruptions cascading through supply chains. Here we show that the global annual incremental gross domestic product loss increases exponentially from 0.03 ± 0.01 (SSP 245)–0.05 ± 0.03 (SSP 585) percentage points during 2030–2040 to 0.05 ± 0.01–0.15 ± 0.04 percentage points during 2050–2060. By 2060, the expected global economic losses reach a total of 0.6–4.6% with losses attributed to health loss (37–45%), labour productivity loss (18–37%) and i

PFAS: Une contamination importante du sol, de l’air et de l’eau par des composés perfluorés

Ocean-driven melting of floating ice-shelves in the Amundsen Sea is currently the main process controlling Antarctica’s contribution to sea-level rise. Using a regional ocean model, we present a comprehensive suite of future projections of ice-shelf melting in the Amundsen Sea. We find that rapid ocean warming, at approximately triple the historical rate, is likely committed over the twenty-first century, with widespread increases in ice-shelf melting, including in regions crucial for ice-sheet stability. When internal climate variability is considered, there is no significant difference between mid-range emissions scenarios and the most ambitious targets of the Paris Agreement. These results suggest that mitigation of greenhouse gases now has limited power to prevent ocean warming that could lead to the collapse of the West Antarctic Ice Sheet. The authors use a regional ocean model to project ocean-driven ice-shelf melt in the Amundsen Sea. Already committed rapid ocean warming drives increased melt, regard

La deuxième session de négociation d'un futur « traité plastiques » se tiendra à Paris du 29 mai au 2 juin prochain. Si l'intérêt pour le sujet n'a cessé de croître Avis du Conseil économique, social et environnemental (CESE) français (avril 2023) : https://www.lecese.fr/sites/default/files/pdf/Avis/2023/2023_07_pollution_plastiques.pdf ; communiqué des ministres de l’Environnement du G7 réuni au Japon avril 2023) : https://www.env.go.jp/content/000128270.pdf ; rapport du PNUE (mai 2023) : https://www.unep.org/fr/resources/turning-off-tap-end-plastic-pollution-create-circular-economy ; Perspectives mondiales des plastiques de l’OCDE (juin 2022) : https://www.oecd.org/fr/environnement/plastiques/, dans la sphère publique internationale, la communauté scientifique, océanique notamment, et dans les milieux professionnels depuis la résolution de l'Assemblée générale des Nations unies pour l'environnement de mars 2022 invitant les États à lancer la négociation d'un « instrument international juridiquement co

INTERLAKEN, Switzerland, March 20, 2023 -- There are multiple, feasible and effective options to reduce greenhouse gas emissions and adapt to human-caused climate change, and they are available now, said scientists in the latest Intergovernmental Panel on Climate Change (IPCC) report released today. ...

Analyse systémique des enjeux. Ébauche de réflexions sur les défis auxquels nous faisons face et le chemin que nous pourrions prendre. 19 Janvier 2020 Cet article fait suite à un exposé donné lors du congrès annuel de l’Association des Médecins Généralistes d’Ixelles le 21 septembre 2019. Il a été relu par Jean-Luc Belche et Jean Macq qui n’en portent pas la responsabilité.

The climate crisis has begun to disrupt human societies by severely affecting the very foundations of human livelihood and social organisation. Climate impacts are not equally distributed across the world: on average, low- and middle-income countries suffer greater impacts than their richer counterparts. At the same time, the climate crisis is also marked by significant inequalities within countries. Recent research reveals a high concentration of global greenhouse gas emissions among a relatively small fraction of the population, living in emerging and rich countries. In addition, vulnerability to numerous climate impacts is strongly linked to income and wealth, not just between countries but also within them.

Our World at Risk: Transforming Governance for a Resilient Future

BERLIN, Feb 28 – Human-induced climate change is causing dangerous and widespread disruption in nature and affecting the lives of billions of people around the world, despite efforts to reduce the risks. People and ecosystems least able to cope are being hardest hit, said scientists in the latest Intergovernmental Panel on Climate Change (IPCC) report, released today.

La stratégie «de la ferme à la table» comprend l’élaboration d’un plan d’urgence visant à garantir l’approvisionnement et la sécurité alimentaires de l’UE en cas de crises futures. S’appuyant sur les enseignements tirés de la pandémie de COVID-19 et d’autres événements récents, la Commission prévoit d’élaborer un ensemble de procédures à suivre en temps de crise. Il s’agit notamment de mettre en place un mécanisme européen de réaction aux crises afin de se préparer et de réagir efficacement aux situations critiques susceptibles de menacer la sécurité alimentaire de l’UE.

Solène Ducretot, co-fondatrice du collectif Les Engraineuses, explique l’importance d’imbriquer les luttes et de prendre conscience de l’interdépendance des problèmes de notre société.

As a leading climate scientist, Paola Arias doesn’t need to look far to see the world changing. Shifting rain patterns threaten water supplies in her home city of Medellín, Colombia, while rising sea levels endanger the country’s coastline. She isn’t confident that international leaders will slow global warming or that her own government can handle the expected fallout, such as mass migrations and civil unrest over rising inequality. With such an uncertain future, she thought hard several years ago about whether to have children.

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Rapport du Shift Project, pour la Direction Générale des Relations Internationales et de la Stratégie (DGRIS), Ministère des Armées.

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Exploration de la situation sociale des personnes dites « électrosensibles », dont le corps et la santé souffrent des rayonnements des technologies sans fil. Dans cette situation, toutes les dimensions de l’existence sont profondément perturbées.

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