Daniel Schmachtenberger describes the term 'planetary boundary' as a conceptual framework representing the limits within which humanity can safely operate to avoid destabilizing the Earth system. These boundaries are scientifically defined thresholds that regulate essential biophysical processes, ensuring the planet remains in a stable state conducive to human development and well-being. Schmachtenberger emphasizes the pressing need for global awareness of these limits, advocating for a systems-thinking approach to governance that can adequately address the interconnectedness of environmental, social, and economic factors. By adhering to planetary boundaries, society can mitigate the risk of crossing critical thresholds that could lead to irreversible ecological damage and endanger the resilience and sustainability of the Earth's systems.

See also: climate change, collective action, global governance, catastrophic risk, existential risk