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).
Research (Guo et al., 2023; Ge et al., 2022; Sun et al., 2022; Aquino et al., 2019; Guo et al., 2018) has demonstrated that conflicts can be described in terms of social tipping mechanisms and that the tipping can be triggered by Earth system destabilisation. Indeed, using a complex systems lens and converging the human–environmental–climate security (HECS) nexus framework (Daoudy et al., 2022; Daoudy, 2021) and the social feedback loop (SFL) framework (Kolmes, 2008) can help to understand conflict tipping mechanisms in coupled social-ecological systems. Self-reinforcing feedbacks (van Nes et al., 2016; Kolmes, 2008) emerge in social-ecological systems as a result of complex interactions among socio-economic, environmental and political events and variables, such as institutional capacity for solving social-ecological problems (Allen et al., 2012; Polk, 2011). These complex interactions result in the amplification of social-ecological shocks potentially disrupting the system in concern (Kintisch, 2016; van Nes et al., 2016; Folke et al., 2010; Homer-Dixon, 2010; Holling et al., 2002). These disruptions can result in a conflict, i.e. a phase transition takes place from cooperation to conflict, with the affected society becoming entrapped in the conflict state until sufficient incentives can move it out (Sun et al. 2022; Guo et al., 2023; Guo et al., 2018).