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This paper presents a new, multidisciplinary concept called "Social Futuring" and introduces an index based on this concept, entitled the "Social Futuring Index". Settled into the intersection of philosophy, psychology, sociology, political theory and geopolitics among many other fields of social sciences social futuring and its application as an index addresses both academia and policymakers. In the present article the concept is explained and then placed in the broader context of social sciences. We highlight that the most unique characteristic of social futuring is its fixed normative, analytical and discursive framework, the center of which is "a good life in a unity of order". Finally, we present the key elements of the index that are currently under construction. [ABSTRACT FROM AUTHOR]

Energy transition will reshape the power sector, and hydrogen is a key energy carrier that could contribute to energy security. The inclusion of sustainability criteria is crucial for the adequate design/deployment of resilient hydrogen networks. While cost and environmental metrics are commonly included in hydrogen models, social aspects are rarely considered. This paper aims to identify the social criteria related to the hydrogen economy by using a systematic hybrid literature review. The main contribution is the identification of twelve social aspects which are described, ranked, and discussed. "Accessibility", "Information", "H 2 markets", and "Acceptability" are now emerging as the main themes of hydrogen-related social research. Identified gaps are e.g., lack of the definition of the value of H 2 for society, insufficient research for "socio-political" aspects (e.g., geopolitics, wellbeing), scarce application of social lifecycle assessment, and the low amount of works with a focus on social practices and cultural issues. [Display omitted] • Twelve social aspects related to the hydrogen economy have been identified. • A systematic hybrid literature review (bibliometric and structured) was used. • Useful for sustainability modellers, researchers, policymakers, stakeholders, etc. • Accessibility, Information, H 2 markets, and Acceptability are popular topics. • Gaps, challenges, and perspectives are identified by a multidisciplinary team. [ABSTRACT FROM AUTHOR]

• New multiobjective optimisation model to design a sustainable hydrogen supply chain. • Optimisation of LCOH, GWP and safety risk and social cost-benefit. • Methodology applied to the "Green H 2 in Hungary" project. • H 2 demand for industrial and mobility markets (trucks and buses). • Comparison of single- and multiobjective optimisation strategies. This article presents a comprehensive approach to design hydrogen supply chains (HSCs) targeting industrial and mobility markets. Even if the inclusion of sustainability criteria is paramount, only a few studies simultaneously consider economic, environmental, and social aspects - the most difficult to measure. In this paper, the safety risk and the social cost-benefit (SCB) have been identified as quantifiable social criteria that would affect society and the end-users. The objectives of this research are (1) to design a sustainable HSC by using four objective functions, i.e., levelized cost of hydrogen, global warming potential, safety risk and social cost-benefit through a mixed-integer linear programming model; (2) to compare results from SCB and multiobjective optimisation. The integration of the SCB criterion at the optimisation stage is not a trivial task and is one of the main contributions of this work. It implies the minimisation of the total cost of ownership (TCO) for buses and trucks. The evolution of the HSC from 2030 to 2050 is studied through a multiobjective and multiperiod optimisation framework using the ε-constraint method. The methodology has been applied to a case study for Hungary with several scenarios to test the sensitivity of demand type and volume as well as the production technology. The results analysis highlights that (1) it is beneficial to have mixed demand (industry and mobility) and a gradual introduction/migration to electrolysis technology and fuel cell vehicles (FCVs) for a smooth transition. Liquid hydrogen produced via water electrolysis powered by nuclear and wind energy can result in an average levelized cost of $4.78 and 3.14 kg CO 2 -eq per kg H 2 ; (2) the frameworks for multiobjective optimisation and SCB maximisation are complementary because they prioritise different aspects to design the HSC. Taxes and surcharges for H 2 fuel will impact its final price at the refuelling station resulting in a higher TCO for FCVs compared to diesel buses and trucks in 2030 but the TCO becomes almost competitive for hydrogen trucks from 2035 when SCB is maximised. The SCB function can be refined and easily adapted to include additional externalities. [ABSTRACT FROM AUTHOR]