Initiated in 2024, the Planetary Health Check is a comprehensive, science-based global initiative dedicated to measuring and maintaining Earth systems critical to life as we know it. These annual reports were created to provide a regular, comprehensive assessment of the state of our world, utilizing the most current planetary boundaries science — monitoring changes, gauging risks, identifying urgent actions needed, developing solutions and determining progress in maintaining a “safe operating space for humanity.” The just-published 2025 assessment finds that seven out of the nine critical planetary boundaries (PBs) have been breached: climate change, change in biosphere integrity, land system change, freshwater change, modification of biogeochemical flows, the introduction of novel entitie

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