The unadjusted intake of food constitutes a real challenge for the several sustainability dimensions. In this perspective, the main objectives of this research are to characterise the current contexts of food security, its relationship with sustainability, and identify proposals and actions that may support the design of more adjusted policies in the future. In addition, it is intended to assess if the food security pillars properly address the sustainability goals and if the evolution of undernutrition is accompanied by sustainable frameworks. In this way, statistical information from the FAOSTAT database was considered for the several dimensions of food security over the period 2000–2020. These data were analysed through factor-cluster approaches and panel data methodologies, namely those related to quantile regressions. As main insights, we may refer that undernutrition is more impacted by the availability of food and nutrients and political stability than by the level of GDP—Gross Domestic Product (except for the extreme cases). This means that the level of development is not the primary explanation for the problems of nutrition. The main focus of the national and international policies must be to improve the agrifood supply chains and to support political stability, in order to mitigate undernutrition worldwide and ensure a global access to sustainable and healthy diets. In addition, it is suggested to rethink the four pillars of food security (availability, access, utilisation and stability), in order to encompass other dimensions, such as climate change.

Purpose: The purpose of this study is to determine whether new rural ventures represent effective rural entrepreneurship or are just entrepreneurial ventures located in rural settings. Design\methodology\approach: Data were collected from a direct questionnaire involving 408 new ventures headquartered in Portuguese business incubators and science parks, of which 142 are located in rural areas. To analyse data, the authors performed a preliminary and exploratory statistical analysis. Findings: The authors demonstrate that only a small percentage of ventures operating in rural areas constitute examples of effective “rural entrepreneurship”, with the bulk of them being just enterprises located in rural settings. Rural new ventures tend to be small (in terms of employees and turnover), rely mainly on the internal market and lag behind other new ventures (located in both rural and urban municipalities) in terms of performance. Research limitations/implications: The study only includes new knowledge-intensive ventures, that is, those headquartered in business incubators and science parks. Therefore, it cannot be generalised to other new ventures located in rural settings. Originality/value: The extant literature on entrepreneurship has neglected the empirical implications of mixing, confounding and/or merging the concepts of “rural entrepreneurship” and “entrepreneurship activities in rural areas”. In this study, the authors discuss and analyse the empirical boundaries of such concepts and uncover the magnitude of pure “rural entrepreneurship”.

Purpose: The purpose of this paper is to investigate the marketing actions developed for rural tourism lodgings and the effect of these actions on lodgings’ performance. Design/methodology/approach: Data were collected with a questionnaire-based survey, addressing promoters of rural tourism supply in Portugal and were analysed using SPSS. Descriptive analysis was undertaken along with a cluster analysis aimed at identifying groups of suppliers according to the types marketing activities they carried out. Findings: Results show that the majority of the suppliers are engaged in other professional activities, aside from running a tourist lodging. These “other activities” provide the bulk of lodging suppliers’ household income. Moreover, they dedicate very little of their time to managing the tourism lodging and develop few marketing activities. Despite this, there is a small group of lodging suppliers who, even though in minority, show a more entrepreneurial and professional attitude regarding marketing actions. They are correspondingly more successful and more satisfied with the performance of their business. Research limitations/implications: A more qualitative in-depth case study approach with a systematic triangulation of findings from diverse sources and approaches might have permitted an even deeper understanding of some of the results, such as the reasons for the identified passivity of suppliers or their lack of marketing initiatives, as well as possible solutions to overcome these identified barriers. Originality/value: This study is important, as there is little existing work connecting rural tourism and marketing. Apart from providing knowledge from theory, the empirical results indicate from a practical perspective some of the potential benefits of assuming a marketing perspective in rural tourism.

Based on an exploratory research, this study highlights the role of pure rural entrepreneurship towards rural development of an inland and mountainous area of Portugal—Montemuro. Thanks to the Institute of Cultural Affairs and the energy of the rural communities, some people of the rural area have been stimulated thirty years ago to develop endogenous, entrepreneurial and innovative initiatives in the countryside. The benefits of all these rural entrepreneurial and endogenous initiatives are visible nowadays. Some villages of the rural area have more people, socio-economic dynamics were revitalized, and some job opportunities were created. Therefore, in a context of depopulation and crisis of peripheral and interior areas, our study demonstrates that rural entrepreneurship and innovation based on endogenous resources are key for the welfare of the rural society.

Climate change and global warming interconnected with the new contexts created by the COVID-19 pandemic and the Russia-Ukraine conflict have brought serious challenges to national and international organizations, especially in terms of food security and agricultural planning. These circumstances are of particular concern due to the impacts on food chains and the resulting disruptions in supply and price changes. The digital agricultural transition in Era 4.0 can play a decisive role in dealing with these new agendas, where drones and sensors, big data, the internet of things and machine learning all have their inputs. In this context, the main objective of this study is to highlight insights from the literature on the relationships between machine learning and food security and their contributions to agricultural planning in the context of Agriculture 4.0. For this, a systematic review was carried out based on information from text and bibliographic data. The proposed objectives and methodologies represent an innovative approach, namely, the consideration of bibliometric evaluation as a support for a focused literature review related to the topics addressed here. The results of this research show the importance of the digital transition in agriculture to support better policy and planning design and address imbalances in food chains and agricultural markets. New technologies in Era 4.0 and their application through Climate-Smart Agriculture approaches are crucial for sustainable businesses (economically, socially and environmentally) and the food supply. Furthermore, for the interrelationships between machine learning and food security, the literature highlights the relevance of platforms and methods, such as, for example, Google Earth Engine and Random Forest. These and other approaches have been considered to predict crop yield (wheat, barley, rice, maize and soybean), abiotic stress, field biomass and crop mapping with high accuracy (R2 ≈ 0.99 and RMSE ≈ 1%).

In the last few years, the relationship between tourism and sustainability has been consolidated. In the context of rural tourism, this connection is even stronger given the environmental specificities and the natural framework of this type of tourism. To achieve sustainability behaviors, it is crucial that rural tourism lodgings communicate their essence, as well the products and experiences available for tourists. This because it is a common practice for visitors to look for more information on the internet about where they will be staying, before booking their tourist experience. The main objective of this study is the analysis of the information provided by rural tourism lodgings, through their websites, regarding sustainability issues. The territory selected for the development of this study is the Portuguese Viseu Dão Lafões Region, located in the center of Portugal. Based on other studies, the methodology includes a content analysis, conducted on 39 rural tourism lodging websites. The results show that some improvements are needed, to clarify and emphasize the message about sustainable practices, in these rural lodgings. Some practical recommendations are provided, that can be adapted to these rural tourism lodgings, or others.