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).
There is very little research on how to govern tipping cascades and how a lack of appropriate governance also feeds into the system, or even cascades that are not related to tipping points in particular. A key question is whether it is possible to identify the conditions for tipping cascades and to avoid them with governance mechanisms, and this requires more evidence and more detailed documentation of the success of adaptation (Owen, 2020). This of course raises notions of early warning systems and ensuring that there are legitimate and just governance mechanisms in place to address this. Literature on governing systemic risk (Schweizer and Renn, 2019) may offer some advice here. The governance of systemic risk includes dealing with risks which are characterised by complexity, transboundary cascading effects, non-linear stochastic developments, tipping points, and lag in perception and regulation (Schweizer and Renn, 2019). It is also important to note that there may be diverging consequences for actors within systems when governing them. Therefore, one needs to consider what are the trade-offs and synergies between efforts to address individual tipping points versus addressing the interactions and cascades between them.