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The lockdown and social distancing policies to reduce COVID-19 spread and perceived safety threats of COVID-19 significantly affected people’s travel behavior. Greece has been suffering from the COVID-19 pandemic, and people’s mobility behavior has been greatly affected. This study aims at: (1) exploring the variations in individuals’ trip frequencies by mode and purpose before and after the COVID-19 outbreak; (2) understanding the effects of individual differences (i.e., sociodemographic details) and perceptions towards COVID-19 (i.e., the perceived threats of COVID-19) on people’s mobility behavior changes after the outbreak; (3) underlining the individuals’ perceptions of the COVID-19 threat on the willingness of public transportation usage. Overall, 403 responses were collected in late 2020. A series of random parameter Probit modeling results reveal multiple individual and perception factors affecting the changes in mobility behavior in Greece. The results from structural equation modeling indicate that perceived COVID-19 threats affect the attitudes and subjective norms towards people’s intentions to use public transportation. The results from this study provide valuable insights for transportation authorities to develop effective strategies to manage traffic during the spread of disease for a possible future epidemic.

The outbreak of Covid-19 pandemic, the Russian invasion into Ukraine, and the subsequent energy crisis, that skyrocketed fossil fuel prices has come up to add upon environmental challenges regarding human footprint on our planet and raising pleas to accelerate energy transition towards a more sustainable future growth model. Investments in adding power generation capacity from renewable sources, in expanding and modernizing transmission and distribution networks, and in promoting energy efficiency emerge as the only credible answer to these concerns. Developing countries face additional challenges in financing such capital-intensive projects due to less mature (financial) institutions and markets. Furthermore, and in particular regarding MENA region countries, energy demand is expected to continue to grow due to specific social and economic reasons. PPPs are proposed to constitute a valuable and credible instrument for energy projects financing. They are characterized by long-term duration, the involvement of the private partner in the entire life cycle of the project, and risk allocation between public and private actors. The cases of the two most successful MENA countries – in terms of PPP investments - are an indicative example on how a set of specific policy, economic and regulatory factors directly correlate to attracting private funds into investing to the transition to a more secure, modern and environmentally-friendly energy paradigm, in which private and public actors harmoniously cooperate and actively support realization of green energy projects.

The COVID-19 pandemic, which has been destabilizing the world since the end of 2019, has significant repercussions on not only health but also the economy, finances, society, politics, the environments, culture and education [...]

To tackle the COVID-19 infodemic, we analysed 58,625 articles from 460 unverified sources, that is, sources that were indicated by fact checkers and other mis/disinformation experts as frequently spreading mis/disinformation, covering the period from 1 January 2020 to 31 December 2022. Our aim was to identify the main narratives of COVID-19 mis/disinformation, develop a codebook, automate the process of narrative classification by training an automatic classifier, and analyse the spread of narratives over time and across countries. Articles were retrieved with a customised version of the Europe Media Monitor (EMM) processing chain providing a stream of text items. Machine translation was employed to automatically translate non-English text to English and clustering was carried out to group similar articles. A multi-level codebook of COVID-19 mis/disinformation narratives was developed following an inductive approach; a transformer-based model was developed to classify all text items according to the codebook. Using the transformer-based model, we identified 12 supernarratives that evolved over the three years studied. The analysis shows that there are often real events behind mis/disinformation trends, which unverified sources misrepresent or take out of context. We established a process that allows for near real-time monitoring of COVID-19 mis/disinformation. This experience will be useful to analyse mis/disinformation about other topics, such as climate change, migration, and geopolitical developments.

In recent decades, sustainability reporting has received increasing business and academic attention. However, the management literature is limited regarding recent trends in the issues disclosed in these reports. In this era of multiple socio-economic crises (e.g., the global energy crisis, the Russo–Ukrainian war, and the COVID-19 pandemic), large companies have an even greater responsibility to the communities in which they operate. Given the above, the aim of this study was to examine recent sustainability reports and identify issues related to community impact. Specifically, the sustainability reports of S&P500 companies were analyzed using the Structural Topic Model in R. The results showed that the most common topics in sustainability disclosures related to community impact were “donations” and “STEM education”. Although “donations” as a topic was expected, “STEM education” emerged to highlight the importance of technology in today’s business world. These findings have important managerial and theoretical implications for sustainability reporting.

As cities are struggling to cope with the second wave of the global COVID-19 pandemic, the idea of 15-min cities seem to have sparked planners’ imagination and politicians’ willingness for providing us with a new urban planning eutopia. This paper explores the “15-min city” concept as a structural and functional element for redesigning contemporary cities. Methodologically, a study of three case cities that have adopted this new model of city vision, is carried out. The analysis focus on understanding how the idea of 15-min cities fits the legacies of different cities as described by traditional planning principles in the context of three evaluation pillars: inclusion, safety and health. The paper argues that the 15-min city approach is not a radical new idea since it utilizes long established planning principles. Nevertheless, it uses these principles to achieve the bottom-up promotion of wellbeing while it proposes an alternative way to think about optimal resource allocation in a citywide scale. Hence, application of 15-min city implies a shift in the emphasis of planning from the accessibility of neighborhood to urban functions to the proximity of urban functions within neighborhoods, along with large systemic changes in resource allocation patterns and governance schemes citywide.

The global environment is being constantly degraded, placing humans at increased risk for outbreaks of infectious diseases. In this regard, environmental quality must be enhanced in order to prevent pandemics in the future. However, it is unknown whether future environmental experts are aware of the intricate relationship between environmental degradation and infectious diseases. This question is important because if they lack awareness about this relationship, they may not be able to contribute to biodiversity conservation which, in turn, can prevent outbreaks of infectious diseases. Hence, the aim of this paper is to investigate the attitudes of environmental students towards the pandemic. The primary objective is to examine their views on the origin of COVID-19 and a secondary objective is to discover the factors that affect the endorsement of conspiracy and non-conspiracy theories on the origin of COVID-19. Our findings indicated that an alarmingly high percentage of students endorsed the conspiracy theory that COVID-19 is a man-made virus for which there was a vaccine before it emerged, whereas only one in five students perceived that the virus is associated with climate change. These students are the future scientists who will be responsible for biodiversity conservation and climate change mitigation. Therefore, it is necessary to pay more attention to environmental students, both in Greece and elsewhere, and examine if such perceptions stem from any deficiencies in curricula or from the effects of the media.

The effects of COVID-19 have had devasting effects on both health and economies in 2020. At the same time, the lockdown and the downturn of economic activity resulted in a decrease in energy consumption and an accompanying reduction in greenhouse gas emissions. In this article, a comparison with the temperature adjustment of energy use is presented for the main carriers of electricity, natural gas, and oil products in the residential, tertiary, industry, and transport (road transport, domestic aviation, and navigation) sectors in 2020 against the previous two years in Greece, along with the corresponding emissions. As the comparison covers the entire year, both COVID peaks in the March–April and November–December periods and the corresponding lockdown effects as well as seasonal variations are included. The analysis shows a reduction, adjusted for temperature, of 3528 GWh in electricity and 10,286 GWh in transport, and an increase of 1916 GWh in heating and other final uses for a net 11,898 GWh decrease and a resulting emissions reduction of 3.48 MtCO2eq (1.29 MtCO2eq in electricity, 2.69 MtCO2eq in transport, and an increase of 0.54 MtCO2eq in heating), or 4.1%, from total national emissions in 2019. The effect is, to a considerable extent, the result of drastic tourist activity contraction, which is starkly evident in the electricity consumption in the Aegean islands. The comparison between the two lockdown periods brings out clear differences, with the reduction in the second one being considerably smaller as the population reverted, to a large extent, to pre-COVID behavior, which implies that no permanent gains from the COVID long-term impact toward decarbonization should be expected.