The “Planetary Health Check 2025” report says Earth’s life-support systems are edging closer to collapse, threatening ecosystems and human societies alike.
Climate change, biodiversity loss, land use, freshwater stress, fertiliser overuse, chemical pollution and ocean acidification have all crossed critical limits.
Only the ozone layer and aerosol pollution remain in the safe zone.
Johan Rockström, Director of the Potsdam Institute for Climate Impact Research, said: “We are witnessing widespread decline in the health of our planet. But this is not an inevitable outcome. Failure is not inevitable; failure is a choice. A choice that must and can be avoided.”
The most alarming development is the ocean.
Since the industrial revolution, surface pH has fallen by 0.1 units – a 30 to 40% increase in acidity – which scientists say is pushing marine ecosystems beyond safe limits.
Coral reefs, cold-water corals and Arctic life are under pressure, while tiny pteropods, a key food source, are already showing shell damage.
Albert Norström, a co-author, said: “This intensifying acidification stems primarily from fossil fuel emissions and together with ocean warming and deoxygenation affects everything from coastal fisheries to the open ocean. The consequences ripple outward impacting biodiversity, food security, global climate stability, and human wellbeing.”
Researchers say the picture is bleak but not hopeless.
The success in repairing the ozone layer and cutting aerosol pollution shows change is possible when science, policy and action align.
The challenge now is to make the planetary boundaries framework a core part of politics, business and finance.
Tiina Häyhä of the Stockholm Resilience Centre said: “We urgently need stronger accountability mechanisms, so that pledges by governments and companies translate into measurable reductions within planetary boundaries. Equity must also be at the centre.”
Without integrated action across climate, biodiversity and pollution, the world is heading deeper into dangerous territory.
