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Living within planetary limits requires attention to justice as biophysical boundaries are not inherently just. Through collaboration between natural and social scientists, the Earth Commission defines and operationalizes Earth system justice to ensure that boundaries reduce harm, increase well-being, and reflect substantive and procedural justice. Such stringent boundaries may also affect ‘just access’ to food, water, energy and infrastructure. We show how boundaries may need to be adjusted to reduce harm and increase access, and challenge inequality to ensure a safe and just future for people, other species and the planet. Earth system justice may enable living justly within boundaries.

Decarbonisation is an essential response to the threat of climate change. To achieve Europe’s net-zero 2050 climate targets, radical technological and social changes are required. Lifestyle changes for reducing greenhouse gas (GHG) emissions are an important component of complex systemic transformation. The typical behaviour of inhabitants in ecovillages is potentially more conducive to sustainable lifestyles than the current European standard lifestyle. This study explores the potential of ecovillagers' lifestyles to contribute to decarbonisation using the Multilevel Perspective (MLP) theoretical framework. The research data were obtained through the model tool EUCalc and an online survey of 73 ecovillage residents in 24 European countries. The results indicate that current ecovillagers’ lifestyles, regarding home, consumption, diet, and mobility, would continue to produce 40% fewer emissions per capita than the standard European lifestyle by 2050. The study identifies which ecovillage behaviours would produce the largest reductions in per-capita CO2eq emissions if adopted by society more broadly.

This HIGH Horizons report (deliverable 2.3) provides an overview of the environmental and health analysis that has taken place. This document builds on the work in deliverable 2.1. It provides an overview of data analysis for fifteen countries on a national, sub-national or local level, for common health outcomes of preterm birth and under-five mortality and climate exposure indicators. The aim of the analysis is to evaluate the impact of extreme heat on two health outcomes to investigate and provide insights on key thresholds and trends. In addition, an international perspective on these two health outcomes is offered. 

This HIGH Horizons report (deliverable 2.1) provides an overview of the 1st version of the environmental health database. In addition, it assesses database design to evaluate which approach would be the most beneficial given the data requirement of the HIGH Horizons project. Further, it presents the metadata of the variables with relevant sharing rules for both environment and health data available for the project.

Significance Achieving a rapid global decarbonization to stabilize the climate critically depends on activating contagious and fast-spreading processes of social and technological change within the next few years. Drawing on expert elicitation, an expert workshop, and a review of literature, which provides a comprehensive analysis on this topic, we propose concrete interventions to induce positive social tipping dynamics and a rapid global transformation to carbon-neutral societies. These social tipping interventions comprise removing fossil-fuel subsidies and incentivizing decentralized energy generation, building carbon-neutral cities, divesting from assets linked to fossil fuels, revealing the moral implications of fossil fuels, strengthening climate education and engagement, and disclosing greenhouse gas emissions information.

AbstractThe Sustainable Development Goals aim to improve access to resources and services, reduce environmental degradation, eradicate poverty and reduce inequality. However, the magnitude of the environmental burden that would arise from meeting the needs of the poorest is under debate—especially when compared to much larger burdens from the rich. We show that the ‘Great Acceleration’ of human impacts was characterized by a ‘Great Inequality’ in using and damaging the environment. We then operationalize ‘just access’ to minimum energy, water, food and infrastructure. We show that achieving just access in 2018, with existing inequalities, technologies and behaviours, would have produced 2–26% additional impacts on the Earth’s natural systems of climate, water, land and nutrients—thus further crossing planetary boundaries. These hypothetical impacts, caused by about a third of humanity, equalled those caused by the wealthiest 1–4%. Technological and behavioural changes thus far, while important, did not deliver just access within a stable Earth system. Achieving these goals therefore calls for a radical redistribution of resources.