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).
Viktoria Spaiser, Sara M. Constantino, Avit Bhowmik, Gianluca Grimalda, Franziska Gaupp, Isaiah Farahbakhsh, Chris Bauch, Madhur Anand, Sibel Eker, J. David Tàbara
Viktoria Spaiser, Sara M. Constantino, Avit Bhowmik, Gianluca Grimalda, Franziska Gaupp, Isaiah Farahbakhsh, Chris Bauch, Madhur Anand, Sibel Eker, J. David Tàbara
This chapter explores changes in socio-behavioural systems that provide important enabling factors and feedbacks for the positive tipping points described across Section 4. In addition, socio-behavioural systems can themselves be tipped, usually driven by complex contagion processes along extended social networks. Changes in social norms are often key drivers for social-behavioural systems, as they define acceptable behaviour, both in consumption domain and in the civic and political domains. Social movements are the main actors, seeding complex contagion of new social norms. However, social movements rely on allies and sympathisers for complex contagion to spread across social networks. Policymakers can also help to establish new social norms through policies that favour behaviours prescribed by new social norms. The chapter also describes the role that education can play in empowering actors to become agents of change.