Facing the Facts
Earth’s vital signs are flashing red: what we learned in Berlin about the Planetary Boundaries
As delegates of NFFT, we attended this conference in Berlin, where Prof. Johan Rockström of the Potsdam Institute for Climate Impact Research (PIK) presented the Planetary Boundaries framework under the title “Facing the Facts”. Thanks to the strong international collaboration around the event, we had the opportunity to attend, to gather valuable and up-to-date scientific information, and to make new contacts and open doors for future cooperation.
This summary distils the key messages of the talk and combines them with the PIK Planetary Health Check 2026, the annual assessment of the state of our planet on which much of the presentation was based.
7 of 9 | 426 ppm | 0.30 °C | ~50% |
planetary boundaries breached | atmospheric CO₂ (safe level: 350) | warming per decade, 2016–2025 | of our CO₂ absorbed by land and ocean |
The Big Picture
Earth out of balance
For more than 10,000 years, human societies grew up inside an unusually stable chapter of Earth’s history, the Holocene. Climate was predictable, water and nutrient cycles supported farming, and ecosystems carried the foundations of food and settlement. Cities, trade and modern civilisation emerged within that corridor.
Humanity is now leaving it. Since the Industrial Revolution, and above all since the mid-20th century, human activity has expanded at a speed without precedent. Scientists call this linked surge the Great Acceleration: since 1750 world population has multiplied about 11 times, real GDP about 111 times, primary energy use 30 times and fertilizer consumption more than 200 times. Atmospheric CO₂ has risen by roughly half.
The future is not predetermined.
The health of the planet rests on three qualities: stability (holding conditions steady over long periods), resilience (absorbing shocks and recovering) and life-support functions (climate regulation, freshwater cycling, fertile soils, ocean chemistry). Human pressure is now eroding all three.
The Framework
Nine guardrails, seven breached
The Planetary Boundaries framework identifies nine Earth-system processes that keep the planet stable. For each, scientists define a boundary: the edge of a Safe Operating Space. Beyond it lies a zone of increasing risk, and further out a high-risk zone where severe, irreversible damage becomes likely. Boundaries are set precautionarily, at the lower end of the range where serious risks appear.
Breached (7): climate change, biosphere integrity, land system change, freshwater change, biogeochemical flows (nitrogen and phosphorus), ocean acidification and novel entities.
Still within bounds (2): atmospheric aerosol loading and stratospheric ozone, though aerosols are already unsafe over South Asia.
Good News: The Ozone Story
The ozone layer shows that global action works. Under the Montreal Protocol, ozone-depleting substances were phased out and the boundary is back in the safe zone, although recovery is incomplete.
The 2026 scorecard in numbers
Boundary | Control variable | Boundary | Now | Status |
Climate change | CO₂ concentration | 350 ppm | 426 ppm | Breached |
| Radiative forcing | +1.0 W/m² | +3.10 W/m² | Breached |
Biosphere integrity | Extinction rate (E/MSY) | 10 | 100–1,000 | Breached |
| Human appropriation of NPP | 10% | 21–30% | Breached |
Land system change | Forest cover (% of potential) | 78% | 64% | Breached |
Freshwater change | Blue water (streamflow) | 12.9% | 22.6% | Breached |
| Green water (soil moisture) | 12.4% | 22.0% | Breached |
Biogeochemical flows | Phosphorus to cropland | 6.2 Tg/yr | 18.2 Tg/yr | Breached |
| Nitrogen fixation | 62 Tg/yr | 165 Tg/yr | Breached |
Ocean acidification | Aragonite saturation | 2.86 | 2.85 | Breached |
Novel entities | Chemicals and plastics | — | Not quantified | Breached |
Aerosol loading | Interhemispheric AOD difference | 0.10 | 0.07 | Within (S. Asia: unsafe) |
Stratospheric ozone | Ozone depletion | — | Recovering | Within |
Source: PIK, Planetary Health Check 2026 (Summary), Fig. 3 and Information Sheets 3.1–3.9. NPP = net primary production; E/MSY = extinctions per million species-years.
Climate
Faster warming, closer tipping points
Recent research finds that global warming has accelerated significantly since about 2015. Between 2016 and 2025 temperatures rose at roughly 0.30 °C per decade, nearly 60% faster than the 0.19 °C per decade of 1980–2020. Earth’s energy imbalance has more than doubled since 1976–1995, and marine-heatwave days have more than tripled since 1991.
In the Pacific, the Niño 3.4 region reached 29.65 °C on 14 September 2026, well above the 1991–2020 average, with a multi-model forecast of 30.8 °C for November, higher than the previous peaks of 1982, 1997 and 2015 shown on Rockström’s slide. Rockström’s message on targets was blunt: at about 1.4 °C of warming today, 1.5 °C is now impossible without “overshoot”. The report adds that 1.5 °C should be read as an upper guardrail, not a safe destination.
Tipping Points
Rockström’s slide places five tipping elements already in the danger zone at current warming: the Greenland ice sheet, the West Antarctic ice sheet, tropical coral reefs, abrupt northern permafrost thaw and the Labrador Sea current. Many others have thresholds within the Paris range of 1.5–2.0 °C.
New studies suggest some thresholds are closer than assumed. A shutdown of the deep North Atlantic overturning after 2100 is now a credible risk even under low and intermediate emission paths. A first threshold in West Antarctica may lie as low as 1–2 °C, linked to the long-term loss of around 40% of its marine ice volume. Warm-water coral reefs are already passing their thermal tipping point after the record bleaching event, which exposed 84.4% of the world’s reef area to bleaching-level heat.
The Amazon is on a knife-edge. About 17–18% of its forest is already lost. If that rises to 22–28%, interactions between deforestation, drying and warming could expose around two-thirds of the remaining forest to degradation at only 1.5–1.9 °C.
Impacts
A year of extremes
From April 2025 to September 2026 the world saw a string of climate-linked disasters, many of them supported by formal attribution studies. Pakistan’s 2025 monsoon floods killed 1,037 people and damaged or destroyed more than 229,000 homes. Cyclones Senyar and Ditwah caused more than 1,109 and 1,800 deaths in Indonesia and Sri Lanka. Hurricane Melissa hit Jamaica as a Category 5 storm after intensifying over exceptionally warm seas. In June 2026 Western Europe endured its most severe heatwave on record.
In August 2026 a historic drought gripped the Amazon, Europe and Indonesia at once. The freshwater boundary shows the same story: unusual soil-moisture conditions now affect 22.0% of ice-free land, against a safe level of 12.4%.
Spotlight1
When land stops buffering climate change
Roughly half of the CO₂ that humans have released since industrialisation has been absorbed by land and ocean sinks, vastly reducing warming. Climate scenarios generally assume this will continue. But land carbon uptake has been relatively stagnant since around 2000, and the same biosphere that buffered warming is now stressed by it through heat, drought, fire and pests.
The authors warn that today’s Earth system models are probably too optimistic: they represent forests as smooth, resilient “biomass blobs” instead of individual trees that die in mortality spirals. If the land sink weakens faster than modelled, the remaining carbon budget shrinks, tipping risks rise and reliance on carbon removal grows. Protecting and restoring nature is therefore part of climate policy, not an add-on.
Spotlight2
The seafloor: protect what we cannot see
Bottom trawling disturbs 1–2% of the global seafloor every year, an area about half the size of Europe, concentrated on productive continental shelves. Shelf sediments store around 360 billion tonnes of organic carbon in their top metre; trawling may release 160–400 million tonnes of carbon a year. Deep-sea mining could add more than 200 km² of disturbance per nodule-mining operation.
Governance is catching up slowly. The BBNJ high-seas agreement entered into force in January 2026, and more than 40 states have called for a moratorium on commercial seabed mining. The authors caution that unilateral licensing outside the International Seabed Authority could undermine the “common heritage” principle.
Spotlight3
Novel entities: flying blind
About 350,000 chemicals and mixtures are registered for use worldwide, yet roughly 95% have never been measured in the environment. Plastics, PFAS, pesticides and metals now reach every corner of the planet: 19–23 million tonnes of plastic enter waters each year, forever chemicals will persist for millennia, and antibiotic concentrations exceed safe thresholds in an estimated 6 million km of rivers.
Solutions exist. The authors point to the essential-use principle, safe-and-sustainable-by-design chemistry, and the Stockholm Convention, under which levels of listed persistent pollutants are already falling. Their verdict: more evidence can strengthen understanding but should not delay action.
Momentum
Reasons for hope
The conference was not only about warnings. Rockström closed with evidence that the energy transition is gathering speed, drawing on data from Ember, IRENA and the IEA:
In 2025 renewables (10,717 TWh) overtook coal (10,490 TWh) in global electricity, for the first time since 1919.
Fossil power generation fell by 51 TWh in 2025, the first fall not caused by a crisis.
Solar produced 2,779 TWh, 8.8% of world electricity, up from 1% in 2015.
Clean sources reached 42.6% of global electricity; coal fell below one third.
Solar modules are 99.8% cheaper per watt than in 1975, and one in four new cars sold in 2025 was electric.
Clean energy investment is expected to reach $2.2 trillion in 2026, nearly twice the $1.2 trillion for fossil fuels.
The Planetary Health Check agrees there is still a narrow window: if the curves are bent within this decade, societies can be set on a safer, more just course. Current efforts, however, are far from sufficient.
Summary
Five take-aways
Seven of nine boundaries are breached. Earth is outside its safe operating space and risks are rising.
Nature is part of the climate solution. The land carbon sink is weakening; fossil phase-out and biosphere protection must go together.
Protect the seafloor from destructive trawling and unregulated deep-sea mining.
Regulate chemicals and plastics before the unknowns become irreversible.
Act this decade. The window to bend the curves is narrow but still open.
OUR TAKE-HOME AS NFFT DELEGATES
Attending this conference gave us direct access to the latest science and to the people behind it. The international exchange in Berlin strengthened our network and showed how closely climate, nature, water, oceans and pollution are connected. We look forward to carrying these insights, and the collaborations that began here, into our future work.
Sources and credits
PBScience / PIK (2026): Planetary Health Check 2026, Summary Report. planetaryhealthcheck.org; publications.pik-potsdam.de (item 34947).
Rockström, J. (PIK): “Facing the Facts: The Planetary Boundaries Framework”, conference presentation, Berlin, 6 October 2026 (slides photographed by the NFFT delegation).
Armstrong McKay, D. et al. (2022), Science; Global Tipping Points Report 2025, University of Exeter.
NOAA OISST; The Climate Brink; WMO Lead Centre ensemble (Niño 3.4); Copernicus GDO (drought).
Ember Yearly Electricity Data 2026; IRENA; IEA World Energy Investment 2026 and Global EV Outlook 2026.
Warszawski, L. et al. (2021), Environmental Research Letters; “Overconfidence in climate overshoot”, Nature (2024).
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