🔍🌡️ Planetary boundaries crossed: 7 limits already exceeded, with direct risks to health and social health inequalities. A key tool to link climate, pollution, and local vulnerabilities. #ClimateHealth
🌊🔥 Oceans, extreme weather, industrial chemistry: this 2025 assessment shows how our choices exceed the planet's resilience capacities, and where to act for the protection of the most exposed populations. #EnvironmentalHealth #HealthInequalities
📌This report provides aquantified global diagnosisof the state of the9 planetary boundariesand risk trends, directly useful for thecommunities, health agencies, NGOs, grassroots associations, and medico-social institutionswishing to anchor their prevention actions within the framework of "planetary boundaries".
It allows for thetranslation of climate, water, chemical, and ecological disruptionsinto concrete health, inequality, and vulnerability issues, particularly through the chapter onextreme events and disasters 2024-25.
Professionals can use it toargue their programmes, raise awareness among their audiences(decision-makers, elected officials, residents) andjustify intersectoral interventions(urban planning, agriculture, social, environmental health)
Source: 📒 ✍️ Potsdam Institute / Stockholm Resilience Centre – "Planetary Health Check 2025" (2025) A Scientific Assessment of the State of the Planet
📜🔗LINK
Number of pages: 144
1. ANALYTICAL SUMMARY
1.1. Context: 7 planetary boundaries crossed, a planet in the danger zone
The report provides aglobal diagnosisof the health of the planet based on the framework of the9 planetary boundaries, each monitored by one or twocontrol indicators(climate, biosphere, water, soils, N and P cycles, oceans, aerosols, ozone, novel entities).
In 2025,7 out of 9 boundaries are transgressed : climate, integrity of the biosphere, terrestrial systems, freshwater, biogeochemical flows, novel entitiesand, for the first time,ocean acidification, which officially shifts into a situation outside the safe zone.
The 2 boundaries still within thesafe operating spaceareatmospheric aerosol (inter-hemispheric difference)andstratospheric ozone, although ozone remains in a phase of incomplete recovery despite the Montreal Protocol.
The report places these findings in theAnthropoceneand the“Great Acceleration”of human pressures since the 1950s, emphasising theloss of resilienceof natural systems (weakening of carbon sinks, destabilised hydrological regimes, collapse of functional diversity).
Particular attention is given to theocean(chap. 3.1) which absorbs a large part of theanthropogenic heat and CO₂, at the cost ofmarine heatwaves, deoxygenation and acidificationthreatening climate stability and food security.
Chapter 3.2 finally shows how theclimate disasters of 2024-25(heatwaves, droughts, floods, storms) areattributable to climate changeand exacerbated by other transgressions (deforestation, water disruption, social inequalities).
1.2. Operational contributions: indicators, systemic levers and tools for action
Beyond the findings, the report provides acomplete set of “Information Sheets”(chap. 4) for each planetary boundary:definition, indicators, risk level 2025, trends, drivers, impacts, research avenues, with clear graphs useful for pedagogy.
The document proposes asystemic readingof the interactions between boundaries (chap. 2.4 and 3.3): for example, how thedeforestation, intensive agriculture, N/P flows, use of pesticides and plasticssimultaneously degrade climate, water, biosphere and human health, but also theleversthat produce co-benefits (food, mobility, energy, circular economy).
Chapter 3.3 lists emergingpractices(states, cities, businesses, civil society) that attempt tooperationalise planetary boundariesin public policies, urban planning, business strategies and reporting frameworks, providing inspiring examples for territories.
ThePlanetary Boundaries Initiative (PBI)and the toolPBAnalyzerare presented as a future“mission control” for planetary boundaries, combining data, modelling and AI to producecontinuous diagnosticsand multi-stakeholder decision support.
For public health actors, the report offers explicitbridgesbetweenglobal environmental risksandhealth, vulnerabilities, environmental justice, particularly in the chapters on the ocean, disasters and new entities (pollutants, plastics, PFAS, pesticides, antibiotics).
Finally, it emphasises that thereturn to a safe operating space remains technically possible, provided that weact on “leverage points”(diets, mobility, regenerative agriculture, circular economy) andarticulate local, national and global actionswith intersectoral governance.
2. KEY POINTS OF THE DOCUMENT
Seven planetary boundaries already crossed, trend towards degradation
The report concludes that7 of the 9 boundariesare transgressed (climate, biosphere, land systems, freshwater, biogeochemical flows, new entities, ocean acidification), all withincreasing pressure trends, placing the planet ina high danger zoneclose to the high-risk zone. (p. 11–18, 27–28)
The climate: CO₂ at 423 ppm in 2025, radiative forcing close to double the high-risk threshold
TheCO₂ concentrationreaches423 ppm(PB = 350 ppm, high-risk threshold = 450 ppm) and theanthropogenic radiative forcingis about2.97 W/m²(PB = 1 W/m², high risk = 1.5 W/m²), confirming the climate's sustainable entry into thedanger zonewith apparent acceleration of warming. (p. 13–16, climate sheets p. 79‑85)
Biosphere and land: extinction > 100 EMSY, global forests at 59% of their original cover
Theextinction rateremains above100 extinctions per million species-years (EMSY)(PB = 10 EMSY) and thehuman appropriation of net primary productionreaches30%(PB = 10%, high-risk threshold = 20%). Theglobal forestshave fallen to59%of their original cover (PB = 75%, high risk = 54%), with qualitative degradation and fragmentation. (p. 13–15, biosphere sheets p. 86‑92, land p. 93‑98)
Nitrogen and phosphorus cycles: confirmed high-risk zone
Thephosphorus inputto agricultural land is estimated at18.2 Tg P/year(PB = 6.2; high risk = 11.2 Tg/year) and theintentional nitrogen fixationat165 Tg N/year(PB = 62; high risk = 82 Tg/year), maintaining N/P cyclesin a high-risk zone, with water pollution, dead zones and health impacts through food and water. (p. 15–16, biogeochemical flow sheet p. 104‑109)
Novel entities and chemical pollution: regulatory capacity exceeded
The boundary“Introduction of Novel Entities”is consideredpermanently transgressed, as theproduction of new substances (plastics, PFAS, pesticides, antibiotics, industrial compounds)is growing faster than society's ability totest, regulate and monitor, with global diffusion even into human blood. The report proposes aset of control indicators(production, emissions, impacts) to better track this risk. (p. 45, 55, 122–125)
3. ACTION PATHWAYS FOR LOCAL ACTORS
Anchor local health plans within the framework of planetary boundaries
Use theboundary status diagrams(radar plot, 'blood test' diagram) and the information sheets (chap. 4) tostructure territorial diagnostics, CLS, PRS, PCA, associative projectsaround local contributions to climate, biodiversity, water, chemical pollution, while clarifying theco-benefits for health. (p. 11–18, 27–28, 78–125)
Link extreme events and social health inequalities in prevention approaches
Rely on chapter3.2 'Extreme Weather and Disasters in 2024–25'to document, in workshops and training, how theheatwaves, floods, droughts and stormsaffect disadvantaged, precarious, marginalised populations, and integrate these elements into thecrisis management plans, popular education programmes, outreach approaches. (p. 61–69). (p. 61–69)
Mobilise co-benefit levers: food, mobility, urban planning, agriculture
Based on the given examples (less meat-based diets, local food systems, sustainable mobility, regenerative agriculture, circular economy), co-design with partnershealth-social-urban planning-agricultureactions that simultaneously reduce emissions, N/P flows, chemical pollution, while improvinghealth, quality of life, social cohesion. (p. 52–53, 69–76, 104–109, 122–125)
Integrate the ocean and aquatic environments into environmental health actions
Use the chapter3.1to raise awareness of the links betweenocean, climate, food, plastic pollution, fishing, coastal tourism, and in the relevant areas (coastal, watersheds) integrate these issues into thehealth diagnostics, environmental education projects, water quality programmes, port or tourism planning. (p. 55–60, 110–113)
Monitor and reduce new entities in living environments
Utilise the document“Introduction of Novel Entities”to engage with thecommunities, medico-social structures, educational and hospital institutionson thereduction of plastics, pesticides, problematic chemicals, PFAS, antibiotics, by combiningresponsible purchasing, waste management, public informationand aligning with policies onindoor air quality, drinking water, food. (p. 122–125)
4. ADDITIONAL REFERENCES
🔍➕ For more information, see the articles referenced by "Health Practices" on the theme of the environment ➡️🔗https://pratiquesensante.odoo.com/2-4-environnement-et-santeon the theme of one health ➡️🔗https://pratiquesensante.odoo.com/2-5-one-health-une-seul-sante
5. CROSS-ANALYSIS — VALUES OF HEALTH PRACTICES
Literacy: The report uses aclear glossaryand pedagogical diagrams (such as 'blood test' diagrams) that allow for a gradual understanding of complex concepts (boundaries, tipping points, etc.), even though it remains overall demanding. (p. 9–10, 28, 78–125)
Empowerment: The beneficiaries are not directly involved, but the text emphasises theability of societies to act on key levers(consumption, mobility, governance) and the importance oftranslating science into decisionsfor the benefit of populations. (p. 52–53, 69–76)
Participation: The report mainly describesinstitutional initiatives (States, cities, businesses)and scientific networks; the mechanisms ofco-construction with communities and field actorsare not well detailed. (p. 69–76)
Community health: The collective dimension appears through the chapters ondisastersandjustice, which highlight how planetary dynamics result in differentiated impacts onvulnerable communities; however, concrete community approaches are poorly documented. (p. 61–69)
Ethics: The report explicitly addresses issues ofjustice, inequalities of exposure and vulnerability, particularly in the analysis of disasters and crossed boundaries as an issue ofrights to a stable planet, but without entering into a structured ethical reflection. (p. 61–69)
Human rights: The idea that planetary boundaries represent abasic condition for human rights(right to life, health, and a healthy environment) is mentioned, but without explicitly mobilising international legal texts. (p. 61–63, 126–129)
Intersectorality: Strong emphasis on theinteractions between sectors(energy, agriculture, water, urban planning, industry, finance) and on the necessity ofintegrated policiesto act across multiple boundaries simultaneously. (p. 52–53, 69–76, 104–109, 122–125)
Partnership: The text documents scientific and institutionalcoalitions(PBScience, Planetary Guardians, PBI) and collaborations with cities, businesses, but few standardised operational models for the local level. (p. 4–6, 69–76, 126–129)
Combating discrimination: Theinequalities of impact(between countries, social groups) are recognised, particularly in disasters, but thespecific discriminations (gender, racism, minorities, disability, LGBTQI+, etc.)are not explored in detail. (p. 61–69)
6. EVALUATION OF THE RELIABILITY OF THE RESOURCE
Scientific relevance
Report produced by amultidisciplinary international team, based on thePIKand reference works (IPCC, IPBES, Earth system science literature).
Methodology explained:control indicators, risk zones, use ofESM models, synthesis of observed databases, annual updates. (pp. 21–23, 34–36, 78–125)
Statusopen accessunder CC BY 4.0 licence, withDOI(10.48485/pik.2025.017), which ensures traceability and citability.
→ High scientific reliability, within the current state of knowledge on planetary boundaries.
Operational relevance
The report is not a field guide, but it provides:
amacro analysis frameworkessential forguidingpolicies, programmes and advocacy;
visual indicators and key figuresusable inawareness-raising, training, territorial diagnosticssensibilisation, la formation, les diagnostics territoriaux ;
examples of operationalisingplanetary boundaries by actors (governments, cities, businesses). (chap. 3.2–3.3, 4, 5) des frontières planétaires par des acteurs (gouvernements, villes, entreprises). (chap. 3.2–3.3, 4, 5)
→ Strong operational relevancefor planning, advocacy, training, more indirect for micro-level interventions, which will require additional translations into practical tools., plus indirecte pour les interventions micro‑niveau, qui nécessiteront des traductions complémentaires en outils pratiques.
7. MCQ — 5 QUESTIONS
PART 1 — Questions (without answers)
Question 1 (p. 11–18)
In 2025, how manyplanetary boundariesare considered to be transgressed in the Planetary Health Check report?
a) 3
b) 5
c) 7
d) 9
Question 2 (p. 13–16, 79–85)
What is one of thecontrol indicatorsused for the boundary“Climate Change”? ?
a) La quantité annuelle de précipitations globales
b) La concentration atmosphérique de CO₂ (ppm)
c) Le taux d’urbanisation global (%)
d) La population mondiale totale
Question 3 (p. 15, 99–103)
In the boundary“Freshwater Change”, what does the concept of“blue water” ?
a) L’eau contenue dans les glaciers et la neige
b) L’eau souterraine fossile non renouvelable
c) L’eau dans les lacs, rivières et réservoirs
d) L’humidité du sol disponible pour les plantes
Question 4 (p. 55–60, 110–113)
Which statement best describes the situation of theocean acidificationin 2025 according to the report?
a) Le seuil de sécurité n’est pas encore atteint et la tendance s’améliore
b) La frontière est transgressée pour la première fois et la tendance se dégrade
c) La frontière est revenue dans l’espace de fonctionnement sûr
d) L’état de l’océan n’est pas quantifiable faute de données
Question 5 (p. 122–125)
What does the boundary“Introduction of Novel Entities”mean in the context of planetary boundaries?
a) The introduction of new invasive plant species
b) The introduction of new environmental public policies
c) The introduction of anthropogenic substances and life forms (chemicals, plastics, PFAS, GMOs, etc.)
d) The introduction of new climate measurement methods
PART 2 — Commented correction
Question 1 (p. 11–18)
In 2025, how manyplanetary boundariesare considered to be transgressed in the Planetary Health Check report?
✅ Correct answer:c) 7
📝 Explanation: The report explicitly states thatseven out of nine boundariesare transgressed: climate, biosphere integrity, land systems, freshwater, biogeochemical flows, novel entities, and ocean acidification. (Source: p. 11–18, 27–28)
Question 2 (p. 13–16, 79–85)
What is one of thecontrol indicatorsused for the boundary“Climate Change”? ?
✅ Correct answer:b) The atmospheric concentration of CO₂ (ppm)
📝 Explanation: The “Climate Change” boundary is monitored notably by theatmospheric concentration of CO₂ (423 ppm in 2025)and theanthropogenic radiative forcing.. (Source: p. 13–16, climate sheet p. 79–85)
Question 3 (p. 15, 99–103)
In the boundary“Freshwater Change”, what does the concept of“blue water” ?
✅ Correct answer:c) Water in lakes, rivers, and reservoirs
📝 Explanation: The report distinguishes between“blue water”(surface water in lakes, rivers, reservoirs) and“green water”(soil moisture available for plants). (Source: p. 15, freshwater fact sheet p. 99–103)
Question 4 (p. 55–60, 110–113)
Which statement best describes the situation of theocean acidificationin 2025 according to the report?
✅ Correct answer:b) The boundary is crossed for the first time and the trend is deteriorating
📝 Explanation: The report indicates that theaverage saturation of aragonitereaches2.84, below the safety threshold of2.86, and concludesfor the first timethat the boundary of“Ocean Acidification”is crossed, with a trend towards deterioration. (Source: p. 15–16, 110–113)
Question 5 (p. 122–125)
What does the boundary“Introduction of Novel Entities”mean in the context of planetary boundaries?
✅ Correct answer:c) The introduction of anthropogenic substances and life forms (chemicals, plastics, PFAS, GMOs, etc.)
📝 Explanation: The boundary“Novel Entities”coverssynthetic chemical substances, plastics, particles, radionuclides, and genetically modified organisms (GMOs, interventions in evolution)whose production exceeds the capacity for testing, regulation, and monitoring. (Source: pp. 122–125)
8. FREQUENTLY ASKED QUESTIONS (FAQ)
What is the purpose of the planetary boundaries framework for public health and prevention?
It defines a“safe operating space”for humanity, beyond which the risks ofclimatic, ecological, and water disruptionsincrease, resulting inhealth and social impacts(diseases, malnutrition, migration, disasters). It provides global benchmarks forprioritising issues and advocacy arguments. (pp. 21–27, 34–36)
What are the two boundaries that remain within the safe operating space in 2025?
The boundaries“Increase in Atmospheric Aerosol Loading”and“Stratospheric Ozone Depletion”remain within thesafe space, although risks remain (regional particulate pollution, Antarctic ozone hole). (pp. 11–18, fact sheets pp. 114–121)
Why is the ocean considered a “discreet guardian” of planetary health?
Because itabsorbs 25–30% of anthropogenic CO₂, storing the majority of theexcess heat, produces abouthalf of the planet's oxygen through phytoplankton, and regulates the climate through itscurrents. But this function leads toacidification, deoxygenation, and biological stress. (p. 55–60)
How are the extreme events of 2024–25 related to planetary boundaries?
Chapter 3.2 shows that theheatwaves, floods, droughtsare amplified byclimate change, which is itself linked to other transgressions (deforestation, freshwater disruption, soil degradation), and that their impacts depend onsocial inequalities and vulnerability. (p. 61–69)
How does the boundary of “new entities” relate to health?
It includesplastics, PFAS, pesticides, persistent organic compounds, antibiotics, etc., which accumulate in theecosystems, the food chain, water, air, with possible effects ontoxicity, cancers, endocrine disruptions, antimicrobial resistance. (p. 122–125)
Does the report propose concrete solutions or just an observation?
It provides adetailed diagnosisand identifiessystemic levers(food, mobility, agriculture, circular economy, multi-level governance) as well asexamples of initiatives(governments, cities, businesses) that integrate planetary boundaries into their decisions. (p. 52–53, 69–76, 126–129)
How can this report be used in training field actors?
By mobilising:
theExecutive Summaryfor theintroduction,
theglossaryfor the concepts,
thefigures of the 9 boundariesas support forparticipatory discussion,
the chapters on theoceanand disastersto work on the linkenvironment–health–inequalitiesenvironnement–santé–inégalités,
the PB sheets as a basis forgroup workon local policies. (p. 9–19, 55–69, 78–125)
9. REWRITING IN EASY TO READ LANGUAGE
9.1. Easy to Read Summary
Title
This document talks about thehealth of the planet.
It uses the idea ofplanetary boundaries.
Main idea
The Earth hasphysical limits.
If we exceed these limits, the planet becomesless stable.
This createsrisks for lifeand for humanhealth.
Current situation
There arenine important limits. importantes.
In 2025, we have alreadyexceeded seven limits.
Theclimate, thenature, thewater, thechemical fertilisers, thechemical pollutionand theoceansare in danger.
Only two limits are still within asafe zone: theaerosolsand theozone.
Role of the ocean
Theoceanabsorbs a lot ofheatandCO₂.
This protects us, but the ocean is becomingwarmerandmore acidic.
Marine animals are in trouble.
Consequences for people
There are moreheatwaves, floodsanddroughts.
These events mainly affect themost vulnerable people.
Inequalities make some peoplemore exposed and less protected.
General message
It is still possible toreturn to a safer zone.
To do this, we need tochange our way of producing and consuming.
We must act together:citizens, communities, businesses, states.
9.2. Key FALC points
Point 1 – Limits exceeded
The Earth hasnine important limits.
We haveexceeded seven limits.
Point 2 – Climate
TheCO₂in the air is very high.
The climate iswarming quickly.
Point 3 – Nature and forests
Many species are disappearingespèces disparaissent.
Theforest areahas decreased significantly.
Point 4 – Water and fertilisers
The water in rivers and soilseau des rivières et des solsis more unstable.
We use too muchnitrogen and phosphorus fertilisers.
Point 5 – Chemical pollution
We produce a lot ofplastics and chemicals.
We cannot test or control all of themtester ni les contrôler.
Point 6 – Oceans
The ocean is becoming more acidicocéan devient plus acide.
Marine life ismore fragile.
Point 7 – Possible actions
Change diet(less meat). (moins de viande).
Reduce pollutingtravel.
Protect forests and watersReduce plastics and toxic products.
Diminuer les plastiques et produits toxiques.