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Resources, Volume 15, Issue 6 (June 2026) – 2 articles

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26 pages, 734 KB  
Review
Bio-Based Construction Materials in the Context of the EU Bioeconomy: Overcoming Systemic Barriers to Mainstream Adoption
by Fernando Pacheco Torgal
Resources 2026, 15(6), 72; https://doi.org/10.3390/resources15060072 (registering DOI) - 22 May 2026
Abstract
The construction sector must simultaneously meet rising global demand and cut embodied carbon deeply enough to satisfy European Green Deal and Bioeconomy Strategy targets—two pressures that conventional petrochemical-derived materials are poorly placed to resolve. Bio-based alternatives offer a credible path: they sequester carbon, [...] Read more.
The construction sector must simultaneously meet rising global demand and cut embodied carbon deeply enough to satisfy European Green Deal and Bioeconomy Strategy targets—two pressures that conventional petrochemical-derived materials are poorly placed to resolve. Bio-based alternatives offer a credible path: they sequester carbon, carry lower embodied emissions, improve indoor air quality, and fit naturally within circular economy models. Yet they remain marginal in specification practice. This paper reviews the evidence on bio-based construction materials and maps the barriers that keep them there. The analysis organises these barriers into four levels—structural, economic, technical, and enabling—and traces the conditional relationships between them, with direct consequences for how policy interventions should be sequenced. The strategic case for this transition extends beyond environmental policy: the 2026 Strait of Hormuz disruption is used here as a scenario to show how dependent European construction is on fossil-derived material inputs, and how exposed that dependence leaves the sector to geopolitical supply shocks. The principal obstacles to adoption prove to be institutional and economic rather than technical—regulatory fragmentation, absent harmonised standards, fragile supply chains, and market structures that systematically undervalue bio-based solutions. The paper concludes that meaningful scaling requires coordinated action across governance, market design, and industrial policy, and that material and performance advances alone will not deliver it. Full article
(This article belongs to the Special Issue Alternative Use of Biological Resources: 2nd Edition)
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28 pages, 351 KB  
Article
Green Energy Finance and Agricultural Performance in MENA Region: Structural Pathways Toward Sustainability
by Ihsen Abid
Resources 2026, 15(6), 71; https://doi.org/10.3390/resources15060071 - 22 May 2026
Abstract
This study investigates the macroeconomic, institutional, and energy-related determinants of agricultural value added in Middle East and North Africa (MENA) countries over the period 2000–2023, with particular emphasis on whether international clean energy finance operates as a conditionally effective driver depending on energy [...] Read more.
This study investigates the macroeconomic, institutional, and energy-related determinants of agricultural value added in Middle East and North Africa (MENA) countries over the period 2000–2023, with particular emphasis on whether international clean energy finance operates as a conditionally effective driver depending on energy endowments. Using a panel fixed-effects framework with Driscoll–Kraay standard errors to address cross-sectional dependence, heteroskedasticity, and serial correlation, the analysis incorporates an interaction term between clean energy finance and an oil-exporting dummy to capture structural heterogeneity. Robustness is ensured through Panel-Corrected Standard Errors (PCSEs), Granger causality tests, and System GMM estimation. The findings reveal that GDP per capita and clean energy finance are positively and significantly associated with agricultural value added, while trade openness negatively affects the sector. Importantly, the interaction results indicate strong asymmetry: the positive contribution of clean energy finance is concentrated in non-oil economies but becomes weak or insignificant in oil-exporting countries, consistent with diminishing marginal returns in energy-abundant contexts. Inflation captures nominal price effects, while short-run dynamics suggest the presence of adjustment costs. Overall, the study highlights that clean energy finance acts as a structurally conditional mechanism, offering nuanced and policy-relevant insights for sustainable agricultural transformation in MENA economies. Full article
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