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).
The core objective of impact governance for ESTPs is to prevent or minimise harm from potential tipping processes, with a special focus on preventing impact cascades. Mirroring existing objectives of adaptation and disaster preparedness, governance in this domain should aim to reduce risk and vulnerability, strengthen resilience, increase preparedness and adaptive capacity, and foster anticipatory and response capacities in relevant institutions.
It is crucial to enhance adaptive capacity and resilience in potentially affected communities and institutions to manage the significant risks associated with crossing tipping points. Given the challenges outlined above, Adaptation governance in this domain should prioritise transformative adaptation, which changes the fundamental attributes of a social-ecological system in anticipation of climate change (here tipping points) and its impacts (IPCC, 2022a) rather than making incremental adjustments to the existing system in response to observed changes. Transformative adaptive measures can mitigate immediate disruptions to economic and social activities, and also help prevent mid-term losses, promoting long-term human wellbeing and planetary health (OECD, 2023). More generally, transformative responses are desirable because they can simultaneously address the key drivers of tipping points, reduce vulnerability and minimise the connectivity that facilitates cascades. In turn such responses imply rapid social and cultural change (positive social tipping points, see Section 4).
One key goal of ESTP impact governance is the prevention of impact cascades, including negative social tipping dynamics. This is a challenging task with limited experience and expertise in existing governance institutions. Given the currently limited understanding of successful strategies for cascade management, especially the design of interventions to halt a cascade that is in progress, we suggest focusing on strengthening the resilience of societies and building adaptive as well as transformative capacity.