Harmful tipping points in the natural world pose some of the gravest threats faced by humanity. Their triggering will severely damage our planet’s life-support systems and threaten the stability of our societies.
In the Summary Report:
• Narrative summary
• Global tipping points infographic
• Key messages
• Key Recommendations
Executive summary
• Section 1
• Section 2
• Section 3
• Section 4
This report is for all those concerned with tackling escalating Earth system change and mobilising transformative social change to alter that trajectory, achieve sustainability and promote social justice.
In this section:
• Foreword
• Introduction
• Key Concepts
• Approach
• References
Considers Earth system tipping points. These are reviewed and assessed across the three major domains of the cryosphere, biosphere and circulation of the oceans and atmosphere. We then consider the interactions and potential cascades of Earth system tipping points, followed by an assessment of early warning signals for Earth system tipping points.
Considers tipping point impacts. First we look at the human impacts of Earth system tipping points, then the potential couplings to negative tipping points in human systems. Next we assess the potential for cascading and compounding systemic risk, before considering the potential for early warning of impact tipping points.
Considers how to govern Earth system tipping points and their associated risks. We look at governance of mitigation, prevention and stabilisation then we focus on governance of impacts, including adaptation, vulnerability and loss and damage. Finally, we assess the need for knowledge generation at the science-policy interface.
Focuses on positive tipping points in technology, the economy and society. It provides a framework for understanding and acting on positive tipping points. We highlight illustrative case studies across energy, food and transport and mobility systems, with a focus on demand-side solutions (which have previously received limited attention).
ESTP impact governance is currently underdeveloped, both in research and practice. Research and knowledge co-production on this topic are urgently needed as well as corresponding capacity-building among relevant stakeholders across scales – for example, global, regional and national governance institutions for climate change adaptation. Several distinct characteristics of ESTPs pose formidable challenges for impact governance, including the speed and time horizons of tipping processes, the emergence of new vulnerabilities, and the irreversibility of many impacts. Combined, these characteristics imply that ESTPs could quickly exceed adaptation limits, capacities for dealing with different kinds of migration, and current disaster risk management capabilities. This chapter begins to develop a framework for multi-scale, multi-phase impact governance that takes these characteristics into account. ESTP impact governance should seek to minimise harms related to tipping processes, including by preventing cascading dynamics in coupled Earth and human systems. Impact governance for ESTPs is relevant across a broad set of issue domains and the corresponding institutions and actor communities, including climate change adaptation, international development, migration, human rights and disaster risk preparedness. Effective governance will require aligning existing institutions at various levels and extending their mandate, but also creating potentially new initiatives and processes.