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The study finds that energy-efficient homes in Spain command a price premium between 5.4% and 9.8% compared to less efficient dwellings. Using a sample of 1,507 homes, the authors determined that homes rated A, B, or C have a 9.8% premium, while those rated A through D have a 5.4% premium. The research also highlights a significant lack of energy efficiency in the Spanish housing stock, with 52% of the sample rated E and nearly 25% rated F or G.

The document argues that climate change adaptation measures involving green and blue areas provide significant co-benefits for human health, which are often overlooked in policy design. It develops a conceptual framework based on five pathways: prevention of climate and pollution effects, improvement of ecosystem quality, social environment benefits, economic activity development, and interaction with microorganisms. The authors review existing literature using objective, self-reported, and mixed methodologies, finding a generally positive but inconsistent correlation between natural environments and health outcomes, with green areas being more extensively studied than blue areas.

The Lima COP 20 summit focused on defining the instructions for a legally binding global agreement to be finalized in Paris in December 2015. Key achievements included the agreement that Intended Nationally Determined Contributions (INDC) be presented by October 2015 and the shift away from the Kyoto Protocol's industrialisation-based differentiation, with major emitters like the USA and China showing willingness to reduce emissions. The summit also saw new contributions to the Green Climate Fund, which reached US$10.2m, and progress on the REDD+ mechanism and gender-responsive climate policies. However, issues regarding the International Mechanism for Loss and Damage, market mechanisms, and the Technology Mechanism remained unresolved.

The document argues that agricultural management is overly driven by food production, leading to a decline in the ecosystems it depends on. It advocates for an ecosystem-based approach to food security and introduces semantic meta-modelling as a tool to integrate various models and quantify trade-offs between crop yields and regulating services like water quality and climate regulation. Using a case study in the Basque Country, the authors demonstrate that informed farming practices, such as adjusting manure application and reducing tillage, can significantly reduce emissions and nitrate leaching without necessarily compromising winter wheat yields.

The document evaluates the environmental sustainability of first-generation biofuels produced in the Basque Country using an innovative methodology that integrates the SIMSNIC agronomic model with life cycle analysis. The study focuses on bioethanol from wheat and biodiesel from rapeseed in the La Llanada Alavesa area. It finds that while biofuels are more energy efficient than fossil fuels, meeting the EU's mandatory 35% greenhouse gas (GHG) reduction target is unlikely under current mineral fertilisation conditions, particularly in nitrate-vulnerable areas. Organic fertilisation increases the likelihood of meeting GHG targets but exacerbates water contamination, soil acidification, and land-use competition. The authors conclude that the agricultural stage, specifically nitrogen fertilisation and climatology, is the primary driver of the carbon footprint due to nitrous oxide emissions.

The document examines the relationship between environmental justice and the success of conservation strategies, specifically Payment for Ecosystem Services (PES). It argues that ignoring social dimensions—such as distributive equity, recognition of rights, and inclusive decision-making—increases the risk of project failure through social conflict and sabotage, whereas integrating these criteria improves ecological outcomes and long-term efficiency.

The document argues that biodiversity offsets are based on reductionist theories that fail to account for the uniqueness of ecosystems. It identifies multiple types of losses—ecological, normative, and moral—that occur when restoration is used to justify habitat destruction. The authors conclude that 'no net loss' is a false goal and advocate for a 'no more loss' approach combined with multi-criteria evaluation and increased social participation.

The document examines the EU's biofuels policy framework, tracing its development from the 2003 Directive to the 2015 ILUC Directive. It highlights the tension between achieving renewable energy targets in transport and the negative externalities associated with first-generation biofuels, such as indirect land use change (ILUC) and food price volatility. The brief notes that while biofuels have increased their share in transport from under 0.5% in 2003 to over 5% by 2012, technical 'blend walls' and a lack of investment in second-generation biofuels remain significant hurdles. It concludes that the ILUC Directive attempts to balance these issues by capping food-crop biofuel contributions at 7% and incentivising advanced biofuels and electrification.

The document defines energy poverty as a lack of sufficient alternatives to access adequate, affordable, and sustainable energy services, which hinders economic and human development. It highlights that 1.3 billion people lack electricity and 2.7 billion rely on biomass, leading to severe health issues. The author argues that energy poverty is both a cause and consequence of general poverty, creating a 'poverty trap' that requires specific policy interventions beyond general economic growth. The briefing notes that universal energy access by 2030 is financially feasible, requiring an annual investment of 30 to 35 billion dollars, which is significantly less than global fossil fuel subsidies.

The document defines energy poverty as the lack of access to adequate, affordable, and sustainable energy services, highlighting its severe impacts on health, economic productivity, and the environment. It notes that 1.3 billion people lack electricity and 2.7 billion rely on biomass for cooking, with the highest concentrations in Sub-Saharan Africa and Asia. The author argues that while energy consumption is a necessary condition for development, universal access could be achieved by 2030 with an annual investment of 30-35 billion USD, a sum significantly lower than current global fossil fuel subsidies.

The document introduces the Adaptive Marine Policy Toolbox (AMP-Toolbox), developed under the PERSEUS project to bridge the gap between scientific knowledge and policy execution in marine management. The toolbox is specifically designed to support the requirements of the EU Marine Strategy Framework Directive (2008/56/EC), which mandates the use of an Ecosystem-Based Approach (EBA) to achieve 'Good Environmental Status' by 2020. The AMP-Toolbox provides a structured, four-level web-based framework—ranging from a five-step policy cycle to specific resources and models—that incorporates scenario planning, stakeholder involvement, and cyclical learning to handle environmental uncertainties and climate change impacts. While primarily aligned with EU directives, the authors note the toolbox's transferability to other frameworks like the Mediterranean Action Plan and the Black Sea's Strategic Action Plan. Future implementation will involve pilot testing in the Western Mediterranean, Adriatic, Aegean, and Western Black Sea to refine the tool based on real-world stakeholder feedback.

The authors developed a method to analyze unevenly spaced paleoclimate data using the Morlet Weighted Wavelet Z-Transform (MWWZ) to avoid the spectral distortions caused by time-domain interpolation. Applying this to the GISP2 ice core oxygen isotope record from Greenland, the implementation successfully identified a known 1,470-year spectral peak between 35,000 and 31,000 years B.P. However, the results differed from previous studies in the Holocene period (last 10,000 years), where no statistically significant spectral structures were found. The authors conclude that further improvements, such as window smoothing and bias correction, are necessary before releasing the tool as an R package.

The research evaluates policy options to reach a 450 PPM CO2 concentration target by 2050, focusing on the period up to 2035. Using the GDynE model, the authors compare domestic carbon taxes and international emission trading (IET) against scenarios where the Green Climate Fund (GCF) is used for welfare redistribution, energy efficiency, or renewable energy. The findings indicate that while abatement costs are generally detrimental to the growth of developing countries, a GCF financed by an 8% levy on developed countries' carbon tax revenues can mitigate these losses. Specifically, investing GCF resources into energy efficiency in developing countries provides the most significant global benefit, potentially resulting in a net gain for developing economies and reducing the overall cost of meeting climate targets for all parties.

The research paper investigates the effectiveness of Bonus-Malus schemes for promoting energy-efficient household appliances in Spain, specifically focusing on dishwashers, refrigerators, and washing machines. The authors develop a methodology to optimize the combination of taxes and subsidies to minimize dead weight loss (DWL) while meeting specific policy goals such as emission reductions or budget neutrality. The study finds that while simple subsidies can lead to welfare loss and increased energy bills due to a higher total number of appliances, a combined tax-subsidy approach can more effectively shift the market toward efficient goods. For instance, achieving a 10% emission reduction for dishwashers would be most effective by taxing both labelled and non-labelled goods, though this results in a significant reduction in the total number of appliances. Conversely, budget-neutral schemes can increase the share of efficient appliances but may inadvertently increase total energy consumption if the increase in efficient units outweighs the reduction in inefficient ones.

The document assesses the impact of implementing the SSP2 scenario in the GCAM model, finding that a business-as-usual approach leads to a temperature increase of nearly 5ºC by 2095. It further evaluates a stabilization policy (RCP2.6) using a global carbon tax, which achieves negative emissions by 2100 through massive deployment of nuclear power, bioenergy with carbon capture and storage (BECCS), and afforestation, though it highlights tensions between economic efficiency and regional equity.

The document evaluates the EU's climate policy instruments, finding that while 2020 targets are likely to be met, the reductions were driven more by the economic crisis than by policy. It highlights low cost-effectiveness due to a lack of uniform carbon pricing and notes that energy efficiency targets are at risk.

The document emphasizes that urban sustainability is not merely a technological challenge but involves power relations, culture, and social values. It advocates for the use of participatory methods to integrate the 'cognitive dimension'—the knowledge, perceptions, and values of diverse stakeholders—to identify barriers and opportunities in energy transitions. Using a Fuzzy Cognitive Mapping (FCM) study in Bilbao, the authors demonstrate that social initiatives and changes in lifestyle yield superior results in reducing emissions and improving quality of life compared to purely economic or institutional measures.

The document defines Ecosystem-based Adaptation (EbA) as the use of biodiversity and ecosystem services to help communities adapt to climate change, positioning it as a cost-effective, 'no-regrets' alternative or complement to traditional infrastructure. While international organizations like the UNFCCC, UNEP, and the World Bank have begun integrating EbA, the author argues it remains under-utilized by national governments due to gaps in technical information, limited on-the-ground effectiveness data, and a preference for short-term 'hard' engineering solutions. The brief recommends increased research into ecosystem service complexities and stronger financial commitments to mainstream EbA into global policy.

The document examines the impact of governance structures on urban climate action in Italy and Spain, comparing a top-down approach in Spain with a more reactive, bottom-up approach in Italy. It finds that while national and regional frameworks often fail to sufficiently support cities, transnational networks like the Covenant of Mayors (CoM) are pivotal in driving the development of local mitigation plans. In Spain, the Central Government's collaborative efforts were partially diluted by regional 'gatekeepers', whereas in Italy, the lack of national guidance led proactive cities to rely on networks and EU projects. Both countries show a strong focus on mitigation (energy and transport) but a significant deficiency in local adaptation planning.

The study finds that Italian cities are generally more proactive in climate mitigation than Spanish cities, with earlier plan implementation and more ambitious emission targets. In both countries, mitigation efforts significantly outweigh adaptation efforts, despite high vulnerability levels. The Covenant of Mayors (CoM) is identified as a more influential driver for local action than national policies or networks.