This paper studies what factors influence European citizens in their e-government adoption and use, and whether there are differences within the European Union. A binary logistic regression model has been used to determine the profile of e-government users. The article highlights especially the influence of digital skills, as an increasingly influential factor, and opens up new areas of research such as the uses of e-government depending on the population density or sociodemographic factors. Given a certain lack of e-government studies at a pan-European level, this article provides an empirical comparative analysis in the EU and provides insights into the factors influencing the behaviour of European e-citizens.

This study presents an analysis of the allocation of greenhouse gas emissions based on a comparison of criteria for 66 countries and fairness-based indicators. The academic literature contains very few broad multi-country studies. The large sample of countries included in our analysis has allowed us to make a more comprehensive, holistic comparison than other studies with similar characteristics. The United States and China must make the greatest effort to fight climate change worldwide, but all countries have a responsibility, including some that are not usually analyzed in this type of research.

Currently, the role of a university in promoting the development of rural areas has been emphasized. However, an increase in academic training can lead to a growth in rural migration due to the lack of job opportunities for university graduates. Given the scarcity of studies on the impact of higher education institutions in areas at risk of depopulation, a research study has been conducted with university students residing in Castilla y León (Spain) in order to understand their insights on the benefits that university education can bring to rural areas, as well as to comprehend the reasons that would motivate the migration of university students or even the interest of institutions in addressing the issue of depopulation. The results achieved suggest that an increase in education could help slow down this process, with the proximity of the university being a decisive factor for population settlement. Additionally, while the shortage of job opportunities would be the main cause of migration, there would also be other factors contributing to depopulation, such as lack of leisure or services, despite a will to stay. Finally, the survey respondents expressed skepticism about the institutions’ interest in addressing this problem.

This paper analyses nickel supply dynamics from the perspective of critical minerals for the energy transition. Using a long-run panel dataset (1942–2023) for a group of historically relevant strategic nickel producers, the study examines the extent to which nickel production and exports respond to price-based adjustment mechanisms or, alternatively, to structural supply-side factors. Based on dynamic fixed-effects models, the results show high persistence in both production and exports, as well as a central role of domestic productive capacity in explaining export behaviour. Although prices show some significant in certain specifications, their overall role remains secondary relative to structural supply-side factors. In addition, the evidence suggests that supply dynamics are conditioned by capacity constraints and strong path dependence. Robustness checks reinforce this interpretation: the role of productive capacity is maintained when its lagged value is used, while market price sensitivity proves specification-dependent and weakens when the nickel price is expressed in real terms. Taken together, the results carry important policy implications, suggesting that critical mineral supply security cannot rely exclusively on short-run price signals, but requires strategies aimed at managing structural supply-side constraints.