30 novembre 2025
Les priorités fédérales révèlent une myopie anachronique : on invoque la rigueur et l’intérêt des générations futures pour préserver les finances de l’État, tout en négligeant ces mêmes arguments face aux risques climatiques et environnementaux devenus infiniment plus menaçants.
19 novembre 2025
L’Arctique renferme de vastes étendues de sols gelés depuis la dernière glaciation, appelés permafrost. Celui-ci dégèle progressivement et libère du dioxyde de carbone ainsi que du méthane. Ces émissions pourraient amplifier le réchauffement climatique de plusieurs degrés. Selon la présentation faite à la COP30, le permafrost est d’ailleurs déjà devenu une source nette de carbone. Aujourd’hui, la majorité du méthane provient des eaux douces et des zones marécageuses.
Fonte,
glaces,
point,
bascule,
non-retour,
climatique,
Arctique,
permafrost,
pergélisol,
méthane,
plusde2,
focusclimat 18 novembre 2025
Il est désormais officiel que l’objectif de 1,5 °C fixé par l’Accord de Paris sera dépassé. Pourtant, ce seuil reste essentiel pour la stabilité de la planète, et les climatologues recommandent de le viser à long terme. Chaque dixième de degré supplémentaire nous ferait entrer davantage dans une « météo de science-fiction ». Les experts soulignent également les risques de points de bascule climatiques irréversibles, comme l’effondrement de la circulation océanique ou la disparition des récifs coralliens, et demandent que leur prévention soit clairement poursuivie. Le scientifique Tim Lenton appelle à agir d’urgence pour éviter un enchaînement de catastrophes.
focusclimat,
COP30,
Brésil,
Amazonie,
Belém,
capture,
carbone,
co2,
Tim,
Lenton,
catastrophes Alors que l’essentiel de la facture climatique repose aujourd’hui sur les contribuables et les budgets publics, une quinzaine de chercheurs en droit proposent, dans une tribune au « Monde », un dispositif pour redistribuer la charge en la faisant peser principalement sur les grandes entreprises productrices de pétrole, gaz et charbon.
11 novembre 2025
Launched at the COP30 Belém Climate Summit, the Global Status of Multi-Hazard Early Warning Systems 2025 report provides a snapshot of progress in the implementation of the UN's flagship Early Warnings for All (EW4All) initiative, which aims to protect every person on Earth with an early warning system by 2027. The report reveals measurable progress, with 119 countries, or 60% of all countries, now reporting the existence of a Multi-Hazard Early Warning System. This is a 113% increase over the past 10 years. However, coverage gaps persist, especially among small island developing States, as only 43% of them reported having systems in place.
De vraag naar aircotoestellen gaat tegen 2050 verdrievoudigen als de huidige trends zich doorzetten. Dat blijkt uit de studie 'Global Cooling Watch 2025', die op de klimaattop in Brazilië is voorgesteld. De stijging kan tot miljarden tonnen extra broeikasgassen leiden, waarschuwt de VN, tenzij we het slim aanpakken.
07 novembre 2025
Je vous livre aujourd’hui quelques réflexions sur la recherche et les publications scientifiques. Comme je fais partie de cette profession, à chaque fois que j’entends ‘trust the Science – croyez la science » j’ai une forêt d’objections qui surgit dans mon esprit. Cette discipline se base sur l’observation de la Nature, et applique de nombreuses règles et des nombreuses décisions humaines imparfaites. Consciemment ou inconsciemment, nous voulons être en accord avec les autres. Nous répétons aussi ce que nous avons appris.
29 octobre 2025
We are hurtling toward climate chaos. The planet's vital signs are flashing red. The consequences of human-driven alterations of the climate are no longer future threats but are here now. This unfolding emergency stems from failed foresight, political inaction, unsustainable economic systems, and misinformation. Almost every corner of the biosphere is reeling from intensifying heat, storms, floods, droughts, or fires. The window to prevent the worst outcomes is rapidly closing. In early 2025, the World Meteorological Organization reported that 2024 was the hottest year on record (WMO 2025a). This was likely hotter than the peak of the last interglacial, roughly 125,000 years ago (Gulev et al. 2021, Kaufman and McKay 2022). Rising levels of greenhouse gases remain the driving force behind this escalation. These recent developments emphasize the extreme insufficiency of global efforts to reduce greenhouse gas emissions and mark the beginning of a grim new chapter for life on Earth.
biosphere,
chaos,
climate,
focusclimat,
earth,
economic,
efforts,
emergency,
emissions,
extreme,
floods,
force,
future,
gases,
global,
greenhouse,
heat,
hotter,
hottest,
inaction,
misinformation,
organization,
peak,
planet,
record,
report,
rising,
state,
systems,
threats,
vital,
world,
years 22 of the planet’s 34 vital signs are at record levels, with many of them continuing to trend sharply in the wrong direction. This is the message of the sixth issue of the annual “State of the climate” report. The report was prepared by an international coalition with contribution from the Potsdam Institute for Climate Impact Research (PIK) and led by Oregon State University scientists. Published today in BioScience, it cites global data from the Intergovernmental Panel on Climate Change (IPCC) in proposing “high-impact” strategies.
2025,
change,
cites,
climate,
focusclimat,
coalition,
contribution,
data,
earth,
from,
future,
global,
impact,
institute,
international,
ipcc,
oregon,
planet,
record,
report,
research,
science,
scientists,
state,
university,
vital,
plusde2,
chezjosette 28 octobre 2025
Lundi, plusieurs médias américains avaient rapporté qu’Amazon allait entamer mardi ce mouvement d’ampleur, évoquant un total de 30 000 postes touchés sur plusieurs mois à travers le monde.
21 octobre 2025
Antibiotic use in farming is now rampant. How meat is produced in China may mean the drugs you need here won’t work, says Prof Devi Sridhar, chair of global public health at the University of Edinburgh
19 octobre 2025
Five of the seven breached planetary boundaries are linked to food systems. By transforming production and adopting a “planetary health diet,” we can halve food-related climate emissions and prevent millions of deaths, according to the 2025 EAT-Lancet Commission.
,
2025,
boundaries,
centre,
climate,
focusclimat,
commission,
emissions,
food,
global,
health,
lancet,
millions,
planet,
production,
resilience,
stockholm,
systems,
transformation,
alimentation 17 octobre 2025
Collapse has historically benefited the 99%. […] That’s the amazing conclusion of Luke Kemp, author of Goliath’s Curse: The History and Future of Societal Collapse. Luke is a research associate at the Centre for the Study of Existential Risk at the University of Cambridge, and has spent the past five years studying the collapse of civilisations throughout history. He joins me to explain his research, detailing the difference between complex, collective civilisations and what he calls “Goliaths”, massive centralising forces by which a small group of individuals extract wealth from the rest through domination and the threat of violence. Today, he says, we live in a global Goliath.
centre,
civilisations,
collapse,
collective,
domination,
forces,
from,
future,
global,
group,
history,
massive,
research,
risk,
study,
university,
violence,
years,
focuscollaps,
collapsologie,
effondrement 15 octobre 2025
CO2 in air hit new high last year, with scientists concerned natural land and ocean carbon sinks are weakening
carbon,
emissions,
fuels,
global,
greenhouse,
land,
ocean,
record,
scientists,
puits,
carbone,
terrestres,
océaniques,
focusclimat,
plusde2 14 octobre 2025
La « socialisation » de la production d’énergie est nécessaire pour démocratiser l’économie et réduire les inégalités, estime le chercheur Lucas Chancel dans un nouvel essai d’histoire globale de l’énergie.
13 octobre 2025
GLOBAL TIPPING POINTS REPORT 2025 - Summary
2025,
report,
global,
tipping,
points,
focusclimat,
points,
bascule,
rapports,
urgence,
alerte,
plusde2 GLOBAL TIPPING POINTS REPORT - 2025
2025,
report,
global,
tipping,
points,
focusclimat,
points,
bascule,
rapports,
urgence,
alerte,
plusde2 Avec l'agonie des récifs coralliens, le premier point de basculement climatique a été franchi. C'est ce qu'annoncent lundi 160 scientifiques dans le Global Tipping Points Report.
basculement,
climatique,
focusclimat,
coralliens,
global,
point,
points,
premier,
scientifiques,
tipping,
focusbiodiversité 12 octobre 2025
L’humanité a trop déstabilisé le climat, au point de l’avoir rapproché de « points de bascule » au potentiel cataclysmique, alertent 160 scientifiques dans un nouveau rapport.
focusclimat,
Points,
bascule,
climatiques,
scientifiques,
rapport,
plusde2,
risques,
catastrophiques,
initiative,
Global,
Tipping,
Points,
infographies Unless global heating is reduced to 1.2C ‘as fast as possible’, warm water coral reefs will not remain ‘at any meaningful scale’, a report by 160 scientists from 23 countries warns
catastrophic,
climate,
focusclimat,
coral,
countries,
crisis,
fast,
from,
global,
planet,
point,
possible,
report,
scientists,
tipping,
warm,
water,
will,
points,
bascule 09 octobre 2025
Pour appréhender l’ampleur de la destruction du climat, le chercheur Gaspard Lemaire plaide pour l’utilisation du concept d’« atrocité climatique ». Un terme qui permettrait de mieux pointer les responsabilités des États.
focusclimat,
ges,
gaz,
effet,
serre,
co2,
destruction,
massive,
écosystèmes,
atrocité,
climatique,
changement German scientists warn global warming is accelerating faster than expected, raising the risk of a 3 °C rise by 2050 and forcing Europe to confront unthinkable adaptation plans.
2050,
adaptation,
climate,
focusclimat,
europe,
forcing,
global,
plans,
rise,
risk,
scientists,
warming,
warn,
warning,
plusde2,
plus3,
atraduire 08 octobre 2025
La coalition Global Sumud Flotilla a annoncé que plusieurs de ses navires avaient été arrêtés ce mercredi 8 octobre au large de la bande de Gaza alors qu’ils tentaient d’apporter une aide humanitaire au territoire palestinien.
03 octobre 2025
Pourquoi l’histoire de l’énergie est-elle intimement liée à celle des inégalités sociales ? Comment penser les débats sur la transition énergétique à l’aune des conflits de répartition des richesses ? Depuis des millénaires, l’usage de l’énergie façonne les sociétés humaines, structurant leurs hiérarchies et leurs rapports de pouvoir. Sa maîtrise est un vecteur d’émancipation autant qu’elle est un outil de domination. La propriété des ressources et des infrastructures énergétiques est un terrain de luttes sociales, politiques et géostratégiques. Selon qui possède l’énergie, des choix de société radicalement différents peuvent advenir. Mais comment le lien entre énergie et inégalités s’est-il construit depuis la Préhistoire ?
Histoire,
énergies,
inégalités,
globale,
transition,
énergétique,
richesses,
répartition,
luttes,
sociales,
politiques 02 octobre 2025
Trente bateaux de la flottille humanitaire Global Sumud continuent de naviguer vers la bande de Gaza. C'est ce qu'a annoncé l'organisation dans la nuit de mercredi à jeudi sur les réseaux sociaux. Auparavant, la marine israélienne avait déjà intercepté plusieurs navires de la flottille.
Au moins un Belge est présent à bord des bateaux de la flottille humanitaire pour Gaza interceptés par la marine israélienne dans la nuit de mercredi à jeudi.
01 octobre 2025
Des navires de guerre israéliens ont encerclé dans la nuit de mardi à mercredi plusieurs bateaux de la Global Sumud Flotilla pour Gaza.
La Flottille Global Sumud, composée de militants issus de 45 pays dont la militante écologiste Greta Thunberg, a été informée ce mercredi 1er octobre au soir par Tsahal qu’elle «approche d’une zone de combat active et qu’elle viole un blocus naval légal».
27 septembre 2025
La flottille Thousand Madleens a quitté samedi en début de soirée le port de Catane en Italie pour rejoindre la bande de Gaza, sous blocus israélien, et apporter de l'aide humanitaire à la population palestinienne, a confirmé le chef de file PS à la Chambre Pierre-Yves Dermagne, présent sur place, à Belga. Parmi la cinquantaine de personnes qui ont mis le cap sur l'enclave se trouvait la députée Ecolo Bénédicte Linard.
Belgique,
activisme,
Israël,
Palestine,
guerre,
Gaza,
flottille,
Thousand,
Madleens,
blocus,
israélien,
Global,
Sumud,
Flotilla 22 septembre 2025
The Production Gap Report finds that 10 years after the Paris Agreement, governments plan to produce more than double the volume of fossil fuels in 2030 than would be consistent with limiting global warming to 1.5°C, steering the world further from the Paris goals than the last such assessment in 2023.
2023,
2025,
2030,
agreement,
double,
fossil,
from,
fuels,
global,
paris,
plan,
production,
report,
warming,
world,
years,
énergies,
fossiles,
pétrole,
gaz,
charbon,
focusclimat 16 septembre 2025
Much attention today focuses on uncertainties affecting the future evolution of oil and natural gas demand, with less consideration given to how the supply picture could develop. However, understanding decline rates – the annual rate at which production declines from existing oil and gas fields – is crucial for assessing the outlook for oil and gas supply and, by extension, for market balances. The International Energy Agency (IEA) has long examined this issue, and a detailed understanding of decline rates is at the heart of IEA modelling and analysis, underpinning the insights provided by the scenarios in the World Energy Outlook. This new report – based on analysis of the production records of around 15 000 oil and gas fields around the world – explores the implications of accelerating decline rates, growing reliance on unconventional resources, and evolving project development patterns for the global oil and gas supply landscape, for energy security and for investment. It also provides regional insights
attention,
demand,
energy,
evolution,
extension,
from,
future,
global,
implications,
international,
investment,
long,
market,
outlook,
production,
project,
records,
reliance,
report,
resources,
scenarios,
security,
supply,
world,
énergies,
fossiles,
pétrole,
gaz Predictably, soon, most young people will reject extremist views. This will be none too soon because it is the essential step leading to global political leadership that appreciates the threat posed by climate’s delayed response to human-made changes of Earth’s atmosphere. Then the annual fraud of goals for future “net zero” emissions announced at United Nations COP (Conference of Parties) meetings might be replaced by realistic climate policies. It is important, by that time, that we have better knowledge of the degree and rate at which human-made forcing of the climate system must be decreased to avoid irreversible, unacceptable consequences.
atmosphere,
changes,
climate,
focusclimat,
earth,
emissions,
forcing,
future,
global,
irreversible,
leadership,
nations,
nature,
people,
system,
will,
young 11 septembre 2025
La Tunisie a ouvert une enquête après une attaque de drones contre un bateau de la "Global Sumud Flotilla" dans la nuit de mardi à mercredi dans les eaux tunisiennes. Le ministère tunisien de l'Intérieur a affirmé, mercredi, qu'il s'agit d'"une agression préméditée".
10 septembre 2025
Alors que la flottille humanitaire pour Gaza doit partir cette semaine, un autre de ses bateaux a été touché dans la nuit de mardi à mercredi dans les eaux tunisiennes, a annoncé la "Global Sumud Flotilla", qui soupçonne, comme la veille, une attaque de drone.
Israël,
Palestine,
guerre,
Gaza,
activisme,
flottille,
Global,
Sumud,
Flotilla,
attaque,
drone 28 août 2025
Gains in cutting deaths from tuberculosis at risk as health officials warn clinics forced to ration drugs and testing
Several, more recent global warming projections in the coupled model intercomparison project 6 contain extensions beyond year 2100–2300/2500. The Atlantic meridional overturning circulation (AMOC) in these projections shows transitions to extremely weak overturning below the surface mixed layer (<6 Sv; 1 Sv = 106 m3 s−1) in all models forced by a high-emission (SSP585) scenario and sometimes also forced by an intermediate- (SSP245) and low-emission (SSP126) scenario. These extremely weak overturning states are characterised by a shallow maximum overturning at depths less than 200 m and a shutdown of the circulation associated with North Atlantic deep water formation. Northward Atlantic heat transport at 26°N decreases to 20%–40% of the current observed value. Heat release to the atmosphere north of 45°N weakens to less than 20% of its present-day value and in some models completely vanishes, leading to strong cooling in the subpolar North Atlantic and Northwest Europe. In all cases, these transitions to a
2100,
amoc,
atmosphere,
beyond,
circulation,
collapse,
data,
deep,
europe,
formation,
global,
heat,
maximum,
model,
observations,
project,
scenario,
seas,
shutdown,
surface,
transitions,
transport,
warming,
water,
years,
amoc 27 août 2025
De plus en plus fréquents, intenses et parfois inédits, les phénomènes atmosphériques extrêmes témoignent d’un climat en mutation. Entre records de chaleur, tornades insolites, tempêtes rares et anomalies atmosphériques, la planète semble secouée par des épisodes météorologiques autrefois considérés comme exceptionnels.
focusclimat,
phénomènes,
atmosphériques,
extrêmes,
chaleur,
tornades,
insolites,
tempêtes,
rares,
anomalies,
atmosphériques 26 août 2025
Purpose Animal emissions account for nearly 60% of total greenhouse gas emissions from the livestock sector. To estimate these emissions, the Food and Agriculture Organization of the United Nations (FAO) developed a dedicated module within the Global Livestock Environmental Assessment Model (GLEAM). Although previous studies have explored selected inputs for specific animals and emission types, a comprehensive analysis of all 92 inputs (parameters and emission factors) had not been conducted. This study aimed to identify the most influential inputs affecting ruminant emissions in GLEAM.
agriculture,
animal,
animals,
cycle,
emissions,
environmental,
food,
from,
global,
greenhouse,
international,
journal,
livestock,
model,
nations,
organization,
sector,
species,
study,
total,
types,
co2,
ges,
focusclimat 22 août 2025
Un phénomène aussi spectaculaire que méconnu a frappé la côte andalouse le 17 août 2025. Les habitants de Motril, Salobreña et Torrenueva Costa (sud de l’Espagne) ont vu le ciel s’assombrir brièvement, avant que des vents violents et un air brûlant ne s’abattent sans prévenir sur la côte. En quelques minutes, les températures ont grimpé à 40,1 °C, des rafales ont soufflé à 87 km/h, et l’humidité a chuté de façon drastique. Au large, certains témoins déclarent avoir vu une sorte de tornade marine, probablement un vortex de chaleur (the watchers).
focusclimat,
bombe,
chaleurs,
températures,
vents,
violents,
air,
brûlant,
tornade,
marine,
vortex 20 août 2025
La France a traversé une vague de chaleur exceptionnelle. Le GIEC et Jean Jouzel préviennent que les canicules s’intensifieront dans les prochaines décennies, et que nous décidons maintenant …
14 août 2025
L'agrochimie autrement dit la pétrochimie et ses vassaux, ne se sont jamais sentis autant menacés qu'en ce moment. En effet, il devient de plus en plus difficile de cacher l'empoisonnement global et massif par les pesticides. Les maladies explosent dans tous les sens et surtout à tous les âges. Sans parler de l'effondrement de la fertilité et de l'intelligence.
06 août 2025
Climate sensitivity is substantially higher than IPCC’s best estimate (3°C for doubled CO2), a conclusion we reach with greater than 99 percent confidence. We also show that global climate forcing by aerosols became stronger (increasingly negative) during 1970-2005, unlike IPCC’s best estimate of aerosol forcing. High confidence in these conclusions is based on a broad analysis approach. IPCC’s underestimates of climate sensitivity and aerosol cooling follow from their disproportionate emphasis on global climate modeling, an approach that will not yield timely, reliable, policy advice.
04 août 2025
Sophisticated global networks are infiltrating journals to publish fake papers
02 août 2025
An epic analysis of 5,000 years of civilisation argues that a global collapse is coming unless inequality is vanquished
civilisation,
collapse,
environment,
future,
global,
history,
inequality,
years,
focuscollaps,
collapsologie,
effondrement,
inégalités 25 juillet 2025
Lancée en avril 2025, l’organisation russe intitulée Global Fact-checking network (GFCN) soutient vouloir lutter contre la désinformation. Mais parmi la soixantaine d'experts membres du réseau, plusieurs sont des relais réguliers de désinformation en ligne. Décryptage.
23 juillet 2025
À l’échelle mondiale, nous venons d’épuiser notre quota de ressources planétaires pour l’année 2025, alerte ce mercredi l’ONG Global footprint network, qui actualise chaque année la date de ce «dépassement». Cette fois, le couperet est tombé un jour plus tôt que l’an dernier, soit la date la plus précoce jamais annoncée par l’ONG.
22 juillet 2025
Il y a 250 millions d’années, la Terre a connu la plus grande extinction de masse de son histoire : la crise Permien-Trias (PTME). Environ 90 % des espèces marines et 89 % des tétrapodes terrestres ont disparu. Un volcanisme cataclysmique dans en Sibérie, a provoqué ce changement par le relâchement d’énormes quantités de CO₂, de méthane et d’autres composés toxiques dans l’atmosphère. Ensuite, un super-effet de serre a régné sur la planète pendant près de 5 millions d’années, bien après la fin du volcanisme actif.
21 juillet 2025
2024 was the hottest year on record [1], with global temperatures exceeding 1.5 °C above preindustrial climate conditions for the first time and records broken across large parts of Earth’s surface. Among the widespread impacts of exceptional heat, rising food prices are beginning to play a prominent role in public perception, now the second most frequently cited impact of climate change experienced globally, following only extreme heat itself [2]. Recent econometric analysis confirms that abnormally high temperatures directly cause higher food prices, as impacts on agricultural production [3] translate into supply shortages and food price inflation [4, 5]. These analyses track changes in overall price aggregates which are typically slow-moving, but specific food goods can also experience much stronger short-term price spikes in response to extreme heat.
2024,
analyses,
cause,
change,
changes,
climate,
focusclimat,
conditions,
earth,
exceeding,
extreme,
food,
global,
heat,
hottest,
impact,
impacts,
inflation,
perception,
play,
production,
public,
record,
records,
rising,
risks,
second,
slow,
supply,
surface,
temperatures,
focusclimat,
alimentattion 17 juillet 2025
Une enquête de l’ONG britannique révèle que plus de neuf activistes sur dix ont été victimes d’attaques sur les réseaux sociaux en lien avec leur engagement en faveur du climat ou de l’environnement.
Est-ce déjà la fin de l'hydrogène dans le secteur automobile ? Stellantis vient de sabrer son programme d'utilitaires tandis que Renault a mis en liquidation début 2025 son usine d'utilitaires à hydrogène. Si certains constructeurs comme Toyota, continuent d'y croire, l'hydrogène vacille.
11 juillet 2025
En juin 2025, la température moyenne mondiale a été de +1,03 °C au-dessus de la moyenne 1951‑1980. Cela fait de juin 2025 le troisième juin le plus chaud jamais enregistré, derrière juin 2024 et juin 2023 .
03 juillet 2025
Malgré le ralentissement des émissions globales de gaz à effet de serre (GES), les voyants du climat restent dans le rouge, nous rappelle le rapport Indicators of Global Climate Change 2024 récemment publié. Ce rapport permet également d’identifier trois leviers d’action à mettre en œuvre pour stabiliser le stock atmosphérique de GES à l’origine du réchauffement global.
The startup Gigablue announced with fanfare this year that it reached a historic milestone: selling 200,000 carbon credits to fund what it describes as a groundbreaking technology in the fight against climate change . But outside scientists frustrated by the lack of information released by the company say serious questions remain about whether Gigablue’s technology works as the company describes. Their questions showcase tensions in an industry built on little regulation and big promises — and a tantalizing chance to profit.
30 juin 2025
Comment visualiser concrètement l’évolution des températures depuis 1880 ? Comment rendre accessibles les données scientifiques de la NASA ? C’est ce qui m’a motivé à créer NASA GISTEMP Viewer, une application web qui permet de voir les données sur une sphère en 3D.
24 juin 2025
Between 80% and 89% of the world’s people want their governments to do more about climate change. This fact is the central tenet of the 89% Project for climate journalism. Timed to coincide with Earth Day and Earth Week, the project launched in April, 2025, and will culminate in another week of focused stories in October, just before the next COP meeting in Brazil.
action,
climate,
focusclimat,
global,
population,
cop30,
Project,
climate,
journalism,
projet89prc,
atraduire The climate crisis has entered a decisive phase. Delaying climate measures increases the likelihood of crossing tipping points. Political shifts are weakening international cooperation when unity is vital. Yet, the Planetary Boundaries offer a path to a stable and sustainable future.
23 juin 2025
Identifying the socio-economic drivers behind greenhouse gas emissions is crucial to design mitigation policies. Existing studies predominantly analyze short-term CO2 emissions from fossil fuels, neglecting long-term trends and other GHGs. We examine the drivers of all greenhouse gas emissions between 1820–2050 globally and regionally. The Industrial Revolution triggered sustained emission growth worldwide—initially through fossil fuel use in industrialized economies but also as a result of agricultural expansion and deforestation. Globally, technological innovation and energy mix changes prevented 31 (17–42) Gt CO2e emissions over two centuries. Yet these gains were dwarfed by 81 (64–97) Gt CO2e resulting from economic expansion, with regional drivers diverging sharply: population growth dominated in Latin America and Sub-Saharan Africa, while rising affluence was the main driver of emissions elsewhere. Meeting climate targets now requires the carbon intensity of GDP to decline 3 times faster than the global
2050,
carbon,
change,
changes,
climate,
focusclimat,
contraction,
deforestation,
design,
economic,
economy,
emissions,
energy,
expansion,
fossil,
from,
fuel,
fuels,
future,
global,
greenhouse,
growth,
history,
innovation,
long,
mitigation,
other,
population,
rise,
rising,
surface,
targets,
temperatures,
will,
émissions,
richesses Iran’s parliament approved a measure to close the vital global trade route, through which more than a fifth of the world’s oil supply passes through daily
global,
iran,
matter,
route,
supply,
trade,
vital,
world,
États-Unis,
Iran,
Israël,
conflit,
guerre,
énergies,
fossiles,
pétrole,
gaz,
détroit,
Ormuz 22 juin 2025
Christophe Cassou, climatologue et auteur du GIEC dans le groupe 1, est invité sur le plateau de franceinfo suite à une étude qu'il a sorti et pour parler des vagues de chaleur actuelles. Il y explique l'évolution des températures globales et leurs conséquences. Ça fout les boules, mais qu'est-ce que ça motive.
19 juin 2025
In a rapidly changing climate, evidence-based decision-making benefits from up-to-date and timely information. Here we compile monitoring datasets (published at https://doi.org/10.5281/zenodo.15639576; Smith et al., 2025a) to produce updated estimates for key indicators of the state of the climate system: net emissions of greenhouse gases and short-lived climate forcers, greenhouse gas concentrations, radiative forcing, the Earth's energy imbalance, surface temperature changes, warming attributed to human activities, the remaining carbon budget, and estimates of global temperature extremes. This year, we additionally include indicators for sea-level rise and land precipitation change. We follow methods as closely as possible to those used in the IPCC Sixth Assessment Report (AR6) Working Group One report.
2024,
benefits,
budget,
carbon,
change,
changes,
climate,
focusclimat,
concentrations,
earth,
emissions,
energy,
forcing,
from,
gases,
global,
greenhouse,
group,
influence,
information,
ipcc,
land,
level,
report,
rise,
state,
surface,
system,
temperature,
warming,
plusde2,
un-degré-et-demi An international group of researchers has produced a third update to key indicators of the state of the climate system set out in the IPCC AR6 assessment, building on previous editions in 2023 and 2024. Forster et al. (2025) assess emissions, concentrations, temperatures, energy transfers, radiation balances, and the role of human activity and conclude that, while natural climate variability also played a role, the record observed temperatures in 2024 were dominated by human activity and the remaining carbon budget for 1.5° C is smaller than ever.
,
2024,
change,
climate,
focusclimat,
global,
influence,
state,
system,
focusclimat,
plusde2,
un-degré-et-demi 18 juin 2025
The human fingerprint on global warming was likely evident in Earth’s atmosphere far earlier than previously thought—even before the invention of modern cars, a new study says. Using a combination of scientific theory, modern observations and multiple, sophisticated computer models, researchers found a clear signal of human-caused climate change was likely discernible with high confidence as early as 1885, just before the advent of gas-powered cars but after the dawn of the industrial revolution.
15 juin 2025
Cela fait bien longtemps que notre équipe n’avait plus émis d’alerte de ce niveau. Mais de nombreuses tendances de crise atteignent actuellement des points d’inflexion susceptibles de se renforcer en réaction en chaîne jusqu’à un choc systémique global à l’automne. Ce choc prendra notamment la forme d’une vaste crise des bons souverains, déclenchée par le Japon, qui accélèrera toutes les dynamiques de transformation du système monétaire et financier. Aussi émettons-nous en direction de nos lecteurs un avis d’ouragan qui sera assorti de recommandations de bon sens. Notre démonstration suivra la chronologie de l’enquête que nous avons menée.
12 juin 2025
Face à l’emballement simultané des crises écologiques, économiques, sociales, politiques et existentielles, nos sociétés semblent piégées dans une fuite en avant. Loin de simples dysfonctionnements, c’est un effondrement structurel qui se profile : celui des équilibres vitaux de notre biosphère, mais aussi de nos représentations collectives, de nos institutions démocratiques et de notre capacité à percevoir le réel. Dans cet article, Jacques de Gerlache explore les racines systémiques de cette crise de civilisation, et pointe notamment l’une de ses carences majeures : l’absence, au sein des mouvements socio-politiques constructifs du XXe siècle, d’une métaphysique émotionnelle et spirituelle capable de nourrir des récits mobilisateurs, porteurs d’espoir, d’incarnation et de plaisir partagé à construire ensemble.
11 juin 2025
Recent simulations using the Community Earth System Model (CESM) indicate that a tipping event of the Atlantic Meridional Overturning Circulation (AMOC) would cause Europe to cool by several degrees. This AMOC tipping event was found under constant pre-industrial greenhouse gas forcing, while global warming likely limits this AMOC-induced cooling response. Here, we quantify the European temperature responses under different AMOC regimes and climate change scenarios. A strongly reduced AMOC state and intermediate global warming (C, Representative Concentration Pathway 4.5) has a profound cooling effect on Northwestern Europe with more intense cold extremes. The largest temperature responses are found during the winter months and these responses are strongly influenced by the North Atlantic sea-ice extent. Enhanced North Atlantic storm track activity under an AMOC collapse results in substantially larger day-to-day temperature fluctuations. We conclude that the (far) future European temperatures are dependent o
2025,
amoc,
cause,
change,
circulation,
climate,
focusclimat,
collapse,
concentration,
earth,
europe,
european,
event,
fluctuations,
forcing,
future,
global,
greenhouse,
intense,
limits,
model,
online,
research,
scenario,
scenarios,
simulations,
state,
storm,
system,
temperature,
temperatures,
tipping,
warming,
winter,
océans 10 juin 2025
L’accord sur les pandémies signé en mai 2025 par les États membres de l’Organisation mondiale de la santé (OMS) est présenté comme un succès historique du multilatéralisme. Pourtant, il pourrait se révéler délétère pour les autres priorités de santé globale, du fait de la gouvernance technocratique qu’il propose et des coûts financiers élevés qui seraient alloués à des risques pandémiques hypothétiques.
focussanté,
OMS,
pandémies,
santé,
globale,
gouvernance,
technocratique,
coûts,
financiers,
risques,
pandémiques,
hypothétiques 05 juin 2025
Arthur Keller est spécialiste des stratégies de résilience collective. Expert reconnu des stratégies de résilience territoriale, il vient décrypter les grands défis systémiques de notre époque (écologie, énergie, économie, société) et proposer des pistes d’action concrètes. Sécurité Globale des Territoires
Sécurité,
Globale,
Territoires,
collapsologie,
effondrements,
chaos,
écologie,
énergie,
économie,
société,
résiliences,
collectives,
locales,
grands,
défis,
systémiques 30 mai 2025
the rapid rises in global military spending threaten climate action, undermining our collective security. In a new joint paper we explore how everything from direct emissions to diverted climate finance are threatening SDG 13 on Climate action.
29 mai 2025
Militaries are huge energy users whose greenhouse gas emissions (GHG) make a significant contribution to the climate crisis. However, countries do not systematically record and report their military emissions so the real share of this source of emissions remains unclear. The Conflict and Environment Observatory (CEOBS) and Scientists for Global Responsibility estimate that everyday military activity could be responsible for around 5.5% of global emissions, meaning that if the world’s militaries were a country, they would be the fourth largest emitter in the world.6 Furthermore, as military spending increases and the rest of society decarbonises, that proportion is set to rise.
L’Organisation Météorologique Mondiale (OMM) publie ses prévisions climatiques pour les cinq prochaines années, 2025-2029. Selon l’OMM, les températures de la terre oscilleront entre +1.2°C et + 1.9°C, ce qui nous amène très près de 2°C de réchauffement en 2030 (OMM). Nous serons alors proches du climat annoncé pour la France à 4°C.
28 mai 2025
Critical minerals, which are essential for a range of energy technologies and for the broader economy, have become a major focus in global policy and trade discussions. Price volatility, supply chain bottlenecks and geopolitical concerns make the regular monitoring of their supply and demand extremely vital.
2025,
chain,
demand,
discussions,
economy,
energy,
geopolitical,
global,
policy,
supply,
technologies,
trade,
vital,
mines ressources minières,
minerais,
critiques 25 mai 2025
Nouveau "TALK" sur LIMIT avec Matthieu Auzanneau,, auteur et directeur du think tank de la transition énergétique The Shift Project nous abordons l’inexorable épuisement des ressources fossiles et ses conséquences géopolitiques (Golfe Persique, Irak, Ukraine) La dépendance de l’Europe au pétrole et au gaz. Les grands moments historiques du pétrole (pic de 1970, Mer du Nord, boom du shale aux USA) Les premiers accords climatiques (Protocole de Kyoto) et la croissance paradoxale de la consommation de gaz L’analogie du corps humain pour montrer que l’énergie est l’« organe vital » de nos sociétés Les pistes de sortie de la « marriage pétrolier » : sobriété organisée, souveraineté industrielle, transition vers les renouvelables Et un appel à l’élaboration d’un plan clair et collectif pour réduire la dépendance aux énergies carbonées « Decarbonons la France ! »
focuscollaps,
effondrement,
géopolitique,
mondiale,
Crise,
alimentaire,
globale,
focusclimat,
énergies,
fossiles,
épuisement,
ressources 19 mai 2025
Societies increasingly rely on scientists to guide decisions in times of uncertainty, from pandemic outbreaks to the rise of artificial intelligence. Addressing climate change is no different. For governments wanting to introduce ambitious climate policies, public trust in climate scientists is pivotal, because it can determine whether voters support or resist those efforts.
artificial,
change,
climate,
focusclimat,
efforts,
intelligence,
pandemic,
public,
scientists,
uncertainty,
artificielle,
IA,
scientifiques,
confiance,
enquêtes,
transnationales 18 mai 2025
Existential Risk and Global Catastrophic - Risk: A Review
2025,
global,
risk,
focuscollaps,
collapsologie,
effondrement,
Catastrophic,
risques,
systémiques,
effondrement,
nocollapswashing,
luap 16 mai 2025
Acute global food insecurity rose for the sixth year in a row in 2024, according to the 2025 Global Report on Food Crises (GRFC), a collaborative effort coordinated by the Food Security Information Network. The report shows that climate extremes, conflict, forced displacement and economic shocks continue to drive malnutrition and food insecurity around the world, with disastrous impacts on those living in many of the most vulnerable regions in the world.
Small particulate matter (PM2.5) in air pollution raises the risks of respiratory problems, cardiovascular disease, and even cognitive decline. Heat waves, which are occurring more often with climate change, can cause heatstroke and exacerbate conditions such as asthma and diabetes. When heat and pollution coincide, they can create a deadly combination.
14 mai 2025
Earth’s albedo (reflectivity) declined over the 25 years of precise satellite data, with the decline so large that this change must be mainly reduced reflection of sunlight by clouds. Part of the cloud change is caused by reduction of human-made atmospheric aerosols, which act as condensation nuclei for cloud formation, but most of the cloud change is cloud feedback that occurs with global warming. The observed albedo change proves that clouds provide a large, amplifying, climate feedback. This large cloud feedback confirms high climate sensitivity, consistent with paleoclimate data and with the rate of global warming in the past century.
albedo,
change,
climate,
focusclimat,
cloud,
condensation,
earth,
formation,
global,
satellite,
warming,
years 13 mai 2025
For around 2,000 years, global sea levels varied little. That changed in the 20th century. They started rising and have not stopped since — and the pace is accelerating. Scientists are scrambling to understand what this means for the future just as President Trump strips back agencies tasked with monitoring the oceans.
09 mai 2025
Climate change is driving rising global temperatures, ecological degradation, and widespread human suffering. Yet, as a collective, humanity has failed to implement sufficient changes to mitigate these threats. This paper introduces the concept of “global narcissism” as a speculative lens to analyze the psychological barriers to climate action. By examining different levels of narcissism and their manifestations in human responses to climate change, this framework highlights key obstacles to meaningful action. While humanity is diverse, and lived experiences vary greatly, this perspective offers a way to discuss patterns of response and resistance. A central challenge lies in humanity’s difficulty in recognizing its symbiotic relationship with the non-human world. Through the metaphor of “global narcissism” this paper explores how humanity’s response to ecological crisis mirrors narcissistic defense mechanisms and suggests a collapse is taking place. This framework provides insights into how psychological int
2025,
action,
change,
climate,
focusclimat,
collapse,
concept,
crisis,
degradation,
ecological,
global,
humanity,
interventions,
manifestations,
perspective,
resistance,
rising,
shift,
temperatures,
threats,
world,
chaleur,
températures,
environnement,
narcissisme,
mondial,
relation symbiotique 07 mai 2025
Paper in Nature Climate Change journal reveals major role wealthy emitters play in driving climate extremes. The world’s wealthiest 10% are responsible for two-thirds of global heating since 1990, driving droughts and heatwaves in the poorest parts of the world, according to a study.
01 mai 2025
Springtails illustrate in new research how global warning and antibiotic resistance creates synergistic effects: warming increases pesticide toxicity, triggering antibiotic resistance which spreads through horizontal gene transfer and predation.
30 avril 2025
2023 set a number of alarming new records. The global mean temperature also rose to nearly 1.5 degrees Celsius above the preindustrial level, another record.A team led by the Alfred Wegener Institute puts forward a possible explanation for the rise in global mean temperature: our planet has become less reflective because certain types of clouds have declined. The work is published in the journal Science.
24 avril 2025
Metals and metalloids are ubiquitous in soils, originating from bedrock and from human activities and infrastructure. These compounds can be toxic to humans and other organisms, and their soil distribution and concentrations at global scale are not well known. Hou et al. analyzed data from more than 1000 regional studies to identify areas of metal toxicity and explore drivers of these trends. They estimate that 14 to 17% of cropland exceeds agricultural thresholds for at least one toxic metal.
23 avril 2025
A superpower in the fight against global heating is hiding in plain sight. It turns out that the overwhelming majority of people in the world – between 80% and 89%, according to a growing number of peer-reviewed scientific studies – want their governments to take stronger climate action.
action,
climate,
focusclimat,
global,
people,
scientific,
world,
étude,
action climatique,
population,
sondage We investigate the probabilities of triggering climate tipping points under five Shared Socioeconomic Pathways (SSPs) and how they are altered by including the additional carbon emissions that could arise from tipping points within the Earth's carbon cycle. The crossing of a climate tipping point at a threshold level of global mean surface temperature (threshold temperature) would commit the affected subsystem of the Earth to abrupt and largely irreversible changes with negative impacts on human well-being. However, it remains unclear which tipping points would be triggered under the different SSPs due to uncertainties in the climate sensitivity to anthropogenic greenhouse gas emissions, the threshold temperatures and timescales of climate tipping points, and the response of tipping points within the Earth's carbon cycle to global warming. We include those uncertainties in our analysis to derive probabilities of triggering for 16 previously identified climate tipping points within the Earth system.
amazon,
carbon,
changes,
climate,
focusclimat,
cycle,
earth,
emissions,
global,
greenhouse,
impacts,
irreversible,
level,
permafrost,
point,
points,
surface,
system,
temperature,
temperatures,
tipping,
warming,
focusclimat,
points,
bascules,
basculement,
emballement 21 avril 2025
La Suisse et le Nord de l’Italie ont subi des précipitations exceptionnelles, qui ne se produisaient avant qu’une fois par siècle. Un courant du sud très humide est monté vers les Alpes où un front froid est arrivé mercredi (MétéoSuisse 14 avril). Une pluie torrentielle a suivi ce choc de masses d’air.
17 avril 2025
Global temperature for 2025 should decline little, if at all, from the record 2024 level. Absence of a large temperature decline after the huge El Nino-spurred temperature increase in 2023-24 will provide further confirmation that IPCC’s best estimates for climate sensitivity and aerosol climate forcing were both underestimates. Specifically, 2025 global temperature should remain near or above +1.5C relative to 1880-1920, and, if the tropics remain ENSO-neutral, there is good chance that 2025 may even exceed the 2024 record high global temperature.
climate,
focusclimat,
forcing,
global,
ipcc,
level,
nino,
record,
relative,
temperature,
chaleurs,
températures,
records 15 avril 2025
Tipping elements within the Earth system are increasingly well understood. Scientists have identified more than 25 parts of the Earth’s climate system that are likely to have “tipping points” – thresholds where a small additional change in global warming will cause them to irreversibly shift into a new state. The “tipping” of these systems – which include the Atlantic Meridional Overturning Circulation (AMOC), the Amazon rainforest and the Greenland ice sheet – would have profound consequences for both the biosphere and people. More recent research suggests that triggering one tipping element could cause subsequent changes in other tipping elements, potentially leading to a “tipping cascade”. For example, a collapsed AMOC could lead to dieback of the Amazon rainforest and hasten the melt of the Greenland ice sheet.
biosphere,
circulation,
climate,
focusclimat,
earth,
global,
greenland,
rainforest,
risks,
system,
systems,
tipping,
warming,
focusclimat,
points,
bascules,
AMOC 12 avril 2025
Les températures de la Planète augmenteront pendant les prochaines décennies. Les catastrophes climatiques s’aggraveront au cours de cette période. A 2°C, il y aura beaucoup plus d’inondations et des vagues de chaleur plus fortes. Nous les subirons de plein fouet, probablement au cours des vingt prochaines années (James E.Hansen).
11 avril 2025
Eat-Lancet report recommended shift to more plant-based, climate-friendly diet but was extensively attacked online [...] The report recommended that if global red meat eating was cut by 50%, the “planetary health diet” would provide nutritious food to all while tackling the harms caused by animal agriculture, which accounts for over 14% of all greenhouse gas emissions worldwide. It suggested individuals – particularly in wealthy countries – should increase their consumption of nuts, pulses and other plant-based foods while cutting meat and sugar from their diets.
agriculture,
animal,
climate,
focusclimat,
countries,
emissions,
food,
global,
greenhouse,
health,
lancet,
meat,
plant,
report,
shift,
study,
focusclimat,
alimentation,
resalim,
attacked online 03 avril 2025
Dans cet épisode, Arnaud reçoit Laurent Testot, journaliste, historien et vulgarisateur scientifique reconnu pour ses travaux sur l’histoire globale et les grands changements environnementaux. Auteur de plusieurs ouvrages, dont « Cataclysme » et « Omokanis », il nous livre une réflexion fascinante sur l’impact humain sur la Terre. Avec Laurent, nous explorons l'impact de l'humanité sur la Terre, de la domestication des chiens aux mutations écologiques du Sahara, en décryptant les grands défis de l'Anthropocène : l'accélération de la crise climatique, la sixième extinction de masse et l'influence des politiques mondiales. C'est une réflexion urgente pour repenser notre rapport à la nature, à l'agriculture et aux écosystèmes.
Environnement,
effondrement,
focuscollaps,
focusbiodiversité,
histoire,
globale,
Anthropocène,
focusclimat,
sixième extinction,
nature,
agriculture,
écosystèmes 31 mars 2025
Morgan Stanley, JPMorgan and an international banking group have quietly concluded that climate change will likely exceed the Paris Agreement’s 2 degree goal.Top Wall Street institutions are preparing for a severe future of global warming that blows past the temperature limits agreed to by more than 190 nations a decade ago, industry documents show.
banking,
banks,
catastrophic,
change,
climate,
focusclimat,
future,
global,
industry,
institutions,
international,
limits,
nations,
news,
street,
temperature,
warming,
will,
Banques,
plusde2,
accords,
Paris 28 mars 2025
Des employés d’une décharge gérée par la multinationale française ont été filmés en train de déverser des résidus liquides directement dans un cours d’eau. Cette pratique met en péril la santé des écosystèmes et des habitants de la région.
25 mars 2025
L’Organisation Météorologique Mondiale a publié son rapport annuel (OMM2024). L’année 2024 a été la plus chaude de l’Histoire. Elle a apporté de nombreux événements extrêmes. Le cyclone Yagi a causé des dégâts étendus en Chine, au Philippines et au Vietnam, et le cyclone Chido a dévasté Mayotte et le Mozambique. De nombreux affluents de l’Amazone se sont taris par une chaleur inhabituelle, et plus de mille pèlerins ont succombé à la chaleur à la Mecque.
21 mars 2025
Dozens of companies and academic groups are pitching the same theory: that sinking rocks, nutrients, crop waste or seaweed in the ocean could lock away climate-warming carbon dioxide for centuries or more. Nearly 50 field trials have taken place in the past four years, with startups raising hundreds of millions in early funds. But the field remains rife with debate over the consequences for the oceans if the strategies are deployed at large scale, and over the exact benefits for the climate. Critics say the efforts are moving too quickly and with too few guardrails.
20 mars 2025
Our study presents a global assessment of microplastic pollution’s impact on food security. By analyzing a comprehensive dataset of 3,286 records, we quantify the reduction in photosynthesis caused by microplastics across various ecosystems.
17 mars 2025
Countries must move rapidly to slash CO2 emissions from homes, offices, shops and other buildings—a sector that accounts for a third of global greenhouse gas pollution, the United Nations said Monday. Carbon dioxide emissions from the building sector rose around 5% in the last decade when they should have fallen 28%, according to a new report by the United Nations Environment Program (UNEP).
building,
buildings,
carbon,
countries,
emissions,
environment,
footprint,
from,
global,
greenhouse,
nations,
other,
pollution,
report,
sector,
focusclimat,
bâtiment,
co2,
luap 14 mars 2025
The clear signs of human-induced climate change reached new heights in 2024, which was likely the first calendar year to be more than 1.5°C above the pre-industrial era, with a global mean near-surface temperature of 1.55 ± 0.13 °C above the 1850-1900 average.
05 mars 2025
The ocean ecosystem is a vital component of the global carbon cycle, storing enough carbon to keep atmospheric CO2 considerably lower than it would otherwise be. However, this conception is based on simple models, neglecting the coupled land-ocean feedback. Using an interactive Earth system model, we show that the role ocean biology plays in controlling atmospheric CO2 is more complex than previously thought. Atmospheric CO2 in a new equilibrium state after the biological pump is shut down increases by more than 50% (163 ppm), lower than expected as approximately half the carbon lost from the ocean is adsorbed by the land. The abiotic ocean is less capable of taking up anthropogenic carbon due to the warmer climate, an absent biological surface pCO2 deficit and a higher Revelle factor. Prioritizing research on and preserving marine ecosystem functioning would be crucial to mitigate climate change and the risks associated with it.
carbon,
change,
climate,
focusclimat,
communications,
cycle,
earth,
from,
future,
global,
interactive,
land,
marine,
model,
nature,
ocean,
research,
risks,
state,
surface,
system,
vital,
océans Global temperature leaped more than 0.4°C (0.7°F) during the past two years, the 12-month average peaking in August 2024 at +1.6°C relative to the temperature at the beginning of last century (the 1880-1920 average). This temperature jump was spurred by one of the periodic tropical El Niño warming events, but many Earth scientists were baffled by the magnitude of the global warming, which was twice as large as expected for the weak 2023-2024 El Niño.