Scientists report Earth has crossed seven of nine planetary boundaries

A group of more than 60 scientists, including researchers from the Potsdam Institute for Climate Change Impact Research and the organization Planetary Guardians, has released a report stating that humanity has breached seven of the nine planetary boundaries essential for maintaining life-sustaining conditions on Earth.

Since 2009, the number of crossed boundaries has increased from three to seven. The original three were climate change, biodiversity loss, and changes to the nitrogen cycle. The latest assessment identifies ocean acidification as the seventh breached boundary, a threshold reportedly crossed in 2025. Other critical systems under pressure include freshwater stability and biosphere integrity.

Only two indicators, the state of the stratospheric ozone layer and atmospheric aerosol pollution, remain within safe limits. Lead author Boris Sakševskis noted that pressure is increasing across all breached boundaries, raising the risk of sudden, non-linear, and potentially irreversible global changes as planetary resilience decreases.