[REVISION HISTORY]

Planetary boundaries transgression status

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2026-10-19 17:04 UTC → 2026-10-28 00:21 UTC · added ~~removed~~

The 2026 Planetary Health Check, produced by the Potsdam Institute for Climate Impact Research (PIK) and the Planetary Guardians, indicates that seven of the nine critical planetary boundaries essential for human stability have been exceeded. These transgressions have reached their highest levels to date, increasing the risk of irreversible changes to the Earth system. The breached boundaries include climate change, biosphere integrity, land-use change, freshwater systems, biogeochemical cycles, the introduction of novel entities, and ocean acidification. Notably, ocean acidification officially crossed the safe threshold for the first time in 2025. Four of these—climate change, biosphere integrity, biogeochemical flows, and the introduction of novel entities—are in a ‘red danger zone,’ while ocean acidification, freshwater change, and land system change are categorized as ‘orange.’ Only stratospheric ozone depletion and atmospheric aerosol concentrations remain within safe limits. Recent findings published in the journal BioScience ~~further~~ warn that Earth’s climate system is entering ‘uncharted territory,’ with seven of sixteen monitored indicators reaching record levels, including greenhouse gas concentrations and sea levels. The report notes a significant acceleration in global warming, with the rate increasing from approximately 0.05°C per decade between 1880 and 1970 to roughly 0.36°C per decade between 2010 and 2024. Scientists warn that the 2°C threshold could be reached before 2050. In October 2026, as approximately 200 countries gathered in Yerevan, Armenia, for the UN biodiversity summit (COP17), new data highlighted the severity of the biodiversity crisis. Rebecca Shaw, chief scientist at the World Wide Fund for Nature (WWF), noted that pressures from intensive agriculture, fossil fuel combustion, and pollution have caused vertebrate populations to decline by an average of 73 percent over the last 52 years, with freshwater ecosystems seeing an 85 percent drop. This decline threatens global food security, as over 75 percent of food crops rely on pollinators.

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