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In the current global landscape, food loss and waste (FLW) persist as a significant challenge, accounting for one-third of global food production and directly impacting 700 million individuals. Beyond its social ramifications, FLW incurs substantial economic costs and raises environmental and ethical concerns. To address this issue, our paper presents a comprehensive systematic overview within operations management, offering a framework that delineates diverse supply chain types, defines FLW, examines its multifaceted impacts, and outlines reduction strategies. Emphasizing a holistic perspective, we utilize various case study approaches to shed light on the global implications of FLW, aiming to contribute to ongoing research endeavors. In exploring the depth of FLW, we build upon two foundational premises: the actions taken by rational actors towards FLW reduction hinge on the balance between benefits and costs, guiding policy formulation. Effective policies necessitate a thorough understanding of synergies, potential unintended consequences and trade-offs. The absence of comprehensive information on FLW leads to both excessive and insufficient rates of FLW. Justifying public intervention lies in its potential to enhance food security, efficiency, and environmental sustainability, albeit quantifying these effects poses challenges. Our overview paper identifies key challenges in FLW policies, encompassing measurement, quantification, interdependencies within the and trade-offs, and value chain in food policy objectives. Despite these challenges, the paper guides the enhancement of loss measurement for targeted interventions, emphasizing investments in policies that foster a conducive business environment and government-led initiatives in awareness and incentive modification. The study also sheds light on crucial gaps in knowledge, including data deficiencies and variability in estimates, calling for standardized data collection methodologies and targeted research initiatives. By addressing these gaps and emphasizing collaborative efforts, this research contributes to a nuanced understanding of FLW, advocating for improved strategies to tackle this multifaceted issue. • Comprehensive Ops Framework: Presents systematic framework for FLW reduction in supply chains. • Multifaceted FLW Impacts: Explores economic, environmental, and social impacts. • Urgent Data Gaps: Emphasizes need for current data on FLW, especially in BRICS nations. • Culture-Specific Solutions: Highlights importance of tailored innovations for waste reduction. • Climate Nexus and Renewable Energy Integration: Explores FLW, climate change, and renewable energy synergy for sustainable, low-carbon paths. [ABSTRACT FROM AUTHOR]

The promotion of renewable energy nowadays is particularly important not only to mitigate the climate change but also to increase the energy independence. Thus, the aim of this paper is to analyse the impacts of attitudes and perception of the war in Ukraine and environmental aspects on selection of green electricity in Lithuania. The survey analysis conducted in early 2023 showed that only 35% of respondents have selected green electricity. Analysis of the main determinants of green electricity selection showed that attitudes towards energy consumption together with the perception of renewable energy environmental impacts (B = 0.13, p < 0.01), as well as attitudes towards the war impact together with the perception of the renewable energy role in solving energy crisis (B = 0.09, p < 0.01), positively and statistically significantly influenced selection of green electricity. Meanwhile, the interaction of attitudes towards the war impact and the perception of the renewable energy role in achieving energy independence insignificantly (B = −0.05, p = 0.06) determined selection of green electricity. From the socio-demographic variables, only age (B = −0.02, p = 0.003) and gender (B = 0.36; p < 0.01) had a significant effect on this behaviour. Thus, this study gives an additional insight for policymakers and green electricity suppliers on how to increase green electricity selection in the context of the war in Ukraine. [ABSTRACT FROM AUTHOR]