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Abstract Net-zero targets imply that continuing residual emissions will be balanced by carbon dioxide removal. However, residual emissions are typically not well defined, conceptually or quantitatively. We analysed governments’ long-term strategies submitted to the UNFCCC to explore projections of residual emissions, including amounts and sectors. We found substantial levels of residual emissions at net-zero greenhouse gas emissions, on average 18% of current emissions for Annex I countries. The majority of strategies were imprecise about which sectors residual emissions would originate from, and few offered specific projections of how residual emissions could be balanced by carbon removal. Our findings indicate the need for a consistent definition of residual emissions, as well as processes that standardize and compare expectations about residual emissions across countries. This is necessary for two reasons: to avoid projections of excessive residuals and correspondent unsustainable or unfeasible carbon-removal levels and to send clearer signals about the temporality of fossil fuel use.

Relational thinking has recently gained increasing prominence across academic disciplines in an attempt to understand complex phenomena in terms of constitutive processes and relations. Interdisciplinary fields of study, such as science and technology studies (STS), the environmental humanities, and the posthumanities, for example, have started to reformulate academic understanding of nature-cultures based on relational thinking. Although the sustainability crisis serves as a contemporary backdrop and in fact calls for such innovative forms of interdisciplinary scholarship, the field of sustainability research has not yet tapped into the rich possibilities offered by relational thinking. Against this background, the purpose of this paper is to identify relational approaches to ontology, epistemology, and ethics which are relevant to sustainability research. More specifically, we analyze how relational approaches have been understood and conceptualized across a broad range of disciplines and contexts relevant to sustainability to identify and harness connections and contributions for future sustainability-related work. Our results highlight common themes and patterns across relational approaches, helping to identify and characterize a relational paradigm within sustainability research. On this basis, we conclude with a call to action for sustainability researchers to co-develop a research agenda for advancing this relational paradigm within sustainability research, practice, and education.

The United Nations conference in Rio de Janeiro in June is an important opportunity to improve the institutional framework for sustainable development. Science assessments indicate that human activities are moving several of Earth's sub-systems outside the range of natural variability typical for the previous 500,000 years ( 1 , 2 ). Human societies must now change course and steer away from critical tipping points in the Earth system that might lead to rapid and irreversible change ( 3 ). This requires fundamental reorientation and restructuring of national and international institutions toward more effective Earth system governance and planetary stewardship.

(1) Background: The sharing economy has emerged as a phenomenon widely described by academic literature to promote more sustainable consumption practices such as access over ownership. However, there exists great semantic confusion within academic literature surrounding the term “sharing economy,” which threatens the realisation of its purported sustainability potential. (2) Objective: The aim of this paper is to synthesise the existing academic definitions and propose a definition of the sharing economy from the perspective of sustainability science in order to indicate sharing practices that are consistent with the sustainability claims attributed to the sharing economy. (3) Methods: We conduct a database search to collect relevant academic articles. Then, we leverage qualitative content analysis in order to analyse the authors’ definitions and to synthesise the broad dimensions of the sharing economy in the discourse. (4) Results: We propose the following characteristics, or semantic properties, of the sharing economy for sustainability: ICT-mediated, non-pecuniary motivation for ownership, temporary access, rivalrous and tangible goods. (5) Conclusion: The semantic properties that inform our definition of the sharing economy for sustainability indicate those sharing practices that promote sustainable consumption compared to purely market-based exchanges. This definition is relevant for academics studying the sustainability impacts of the sharing economy in order to promote comparability and compatibility in research. Furthermore, the definition is useful for policy-makers, entrepreneurs, managers and consumers that have the sharing economy on the agenda in order to promote social enterprise and support sustainable consumption.

A bioeconomy can be defined as an economy where the basic building blocks for materials, chemicals and energy are derived from renewable biological resources. This paper provides an overview of the bioeconomy in Europe, examining it from a policy framework and concept perspective. The role of bioenergy in the bioeconomy is discussed particularly through biofuels for transport and biorefineries. The study finds that the definitions of the bioeconomy are evolving and vary depending on the actor, but display similarities such as the emphasis on economic output and a broad, cross-sectoral focus. While there is great optimism about the benefits and opportunities associated with developing an advanced bioeconomy in Europe, significant risks and trade-offs are also expressed. Furthermore, the bioeconomy concept has been criticised for presenting a technical fix and pre-empting alternative visions. To advance a competitive and sustainable bioeconomy, this paper calls for attention on two important themes: participatory governance that engages the general public and key stakeholders in an open and informed dialogue as well as a commitment by government and industry to innovation that drives concerted efforts on sustainable development of the bioeconomy.

In sustainability science, revising the paradigms that separate humans from nature is considered a powerful 'leverage point' in pursuit of transformations. The coupled social-ecological and human-environment systems perspectives at the heart of sustainability science have, in many ways, enhanced recognition across academic, civil, policy and business spheres that humans and nature are inextricably connected. However, in retaining substantialist assumptions where 'social' and 'ecological' refer to different classes of entity that interact, coupled systems perspectives insist on the inextricability of humans and nature in theory, while requiring researchers to extricate them in practice - thus inadvertently reproducing the separation they seek to repair. Consequently, sustainability researchers are increasingly drawing on scholarship from the 'relational turn' in the humanities and the social sciences to propose a paradigm shift for sustainability science: away from focusing on interactions between entities, towards emphasizing continually unfolding processes and relations. Yet there remains widespread uncertainty about the origins, promises and challenges of using relational approaches. In this paper, we identify four themes in relational thinking - continually unfolding processes; embodied experience; reconstructing language and concepts; and ethics/practices of care - and highlight the ways in which these are being drawn on in sustainability science. We conclude by critically discussing how relational approaches might contribute to (i) a paradigm shift in sustainability science, and (ii) transformations towards sustainability. Relational approaches foster more dynamic, holistic accounts of human-nature connectedness; more situated and diverse knowledges for decision-making; and new domains and methods of intervention that nurture relationships in place and practice.

Introduction The COVID-19 pandemic precipitated numerous changes in daily life, including the cancellation and restriction of sports trainings and competitions globally. Because engagement in sports contributes positively to the physical and psychosocial development of adolescents, restricting these activities may have led to long-term changes in mental health, especially among high school student-athletes that spend a significant amount of time training and competing. Objectives We sought to (1) compare overall prevalence rates and symptom severity of depression and anxiety between 2021 and 2022, (2) assess cohort and class-level differences on internalizing measures, and (3) identify demographic and health risk factors for developing depressive and anxiety symptoms in 2022 and compare the composition of these models predicting depression and anxiety with those proposed by Håkansson et al. (Front. sports act. living 2022; 4 943402) on student-athletes in the 2021 sample. Methods Using a cross-sectional study design with repeated measures, we measured rates of depression using the Patient Health Questionnaire-2 scale (PHQ-2) and anxiety using the Generalized Anxiety Disorder-2 scale (GAD-2) in student-athletes attending elite sport high schools in Sweden during the second wave of the pandemic (February 2021) and after all restrictions were lifted (February 2022). Results As illustrated in Table 1, the overall prevalence of depression among student-athletes declined significantly from 19.8% in 2021 to 17.8% in 2022, whereas the percentage of student-athletes screening for anxiety did not change significantly (17.4% in 2021 to 18.4% in 2022).Table 1 Depression and Anxiety Measures 2021-2022 Variable 2021 2022 praw padj Positive diagnosis, n (%) a PHQ-2 ≥ 3 1390 (19.8%) 1107 (17.8%) .002 .007 GAD-2 ≥ 3 1219 (17.4%) 1147 (18.4%) .125 .187 Symptom measure M (SD) b PHQ-2 [0-6] 1.38 (1.52) 1.25 (1.48) < .001 < .001 GAD-2 [0-6] 1.35 (1.57) 1.36 (1.59) .784 .840 Note. Comparison of psychological health measures across years. P-values adjusted for multiple comparison using Benjamini & Hochberg (1995)36 procedure. a Chi-square test of homogeneity b independent-samples t-test Cohort-level analyses revealed older students exhibited decreases in depressive symptoms (Figure 1), while younger cohorts experienced increases in symptoms of anxiety (Image 2) from 2021 to 2022. Logistic regressions revealed that being female, reporting poorer mental health due to COVID-19, and excessive worry over one’s career in sports were significant predictors of both depression and anxiety screenings in the 2022 sample (Image 2). Image: Image 2: Conclusions In comparison to periods when sports participation was limited in February 2021, the lifting of restrictions in February 2022 was associated with overall reduced levels of depression, but not anxiety. Disclosure of Interest M. Andersson: None Declared, G. Kenttä: None Declared, K. Moesch: None Declared, E. Borg: None Declared, E. Claesdotter-Knutsson: None Declared, A. Håkansson Grant / Research support from: AH receives financing from the Swedish state-owned gambling operator, AB Svenska Spel, and the state-owned alcohol monopoly. Neither were involved in the study planning, execution, or decision to publish the current article.

Fell, from the Prescription Medicines Code of Practice Authority (PMCPA), the self-regulatory body of the Association of the British Pharmaceutical Industry (ABPI), agrees with our overarching point that healthcare professionals and organisations have an important role in responding to any formal sanctions that are applied by the PMCPA and ABPI.12 For healthcare professionals and organisations to able to respond, however, they need more information about what the companies breaching the ABPI code have done. We therefore look forward to the PMPCA considering our suggestions to improve transparency by making its audits publicly available and by requiring companies that are publicly reprimanded by authority to inform their collaborators about the offences and any remedial action taken.Fell sees the increasing number of breaches of the ABPI code ruled over time as a positive development, as it “shows that people feel confident using the self-regulatory system to raise concerns.” Although this interpretation is certainly possible, the obvious counterpoint is that the increasing number of breaches primarily shows that many companies are engaging in unethical marketing, which can hardly be seen as positive.Furthermore, although some people exposed to unethical marketing do submit complaints to the PMCPA, most do not, as we point out in our article. In other words, there is most likely a large under-reporting to the PMCPA. In addition, people might be submitting complaints to the PMCPA just because it is the only way to complain about company misbehaviour (as the Medicines and Healthcare Products Regulatory Agency strongly encourages people to complain to the PMCPA).Finally, although it is true that the total number of complaints from individuals to the PMCPA has gone up in recent years, a detailed breakdown shows a very marked decrease in complaints from competing drug companies. It would be concerning if this was because companies do not feel confident in using their own self-regulatory system to raise concerns.

The onset of formulating strategies and policies regarding the bioeconomy can be, at least partly, attributed to the publication of the policy agenda on the bioeconomy by the Organisation for Economic Cooperation and Development in 2009. The aim of this study is to analyze selected national strategies and policies regarding the development of a bioeconomy and to clarify similarities and differences between them. The article presents a comparative overview of the strategies and policies for developing a bioeconomy in the EU, USA, Canada, Sweden, Finland, Germany and Australia. The documents analyzed are in most cases national strategies or policies. The structures and aims of these documents vary and the analysis is further complicated by the terms \"bioeconomy\" and \"bio-based economy\" having as yet no clear definition, a point which is discussed in some depth in this article. In the documents analyzed, strategies and policies on how to promote the bioeconomy are often presented based on the prerequisites of the country in focus; the need for increased research, development and demonstrations in the area is thus particularly stressed. The main emphasis is often to enhance the economy of a nation and provide new employment and business possibilities, whereas the aspects of sustainability and resource availability are addressed only to a limited extent in many of the documents.