1,720,978 research outputs found
Climate change and development in South Africa: the impact of rising temperatures on economic productivity and labour availability
No full textClimate change has a major impact on productivity of different economic sectors as well as different labour groups. Here we study the crucial linkage between gradual climate change and availability of low-skilled labour in rural areas of South Africa. Using a nationally representative panel of micro-survey data, we derive marginal impacts of rising temperatures on labour availability. Our econometric findings suggest that optimal conditions maximizing weekly labour supply are heterogeneous across sectors. We develop an analytical model of overlapping generations to study the long-term impacts of future climate and socioeconomic changes on labour supply and welfare. Overall, high exposure of low-skilled labour to climate change and rising temperatures reduces the supply of low-skilled labour which in turn, reduces the wage gap between high-skilled and low-skilled labour. However, the overall impact of climate change on economy remains negative and the welfare in terms of output per adult drops by 20% compared to the baseline case with no climate change
Future prospects of direct air capture technologies: insights from an expert elicitation survey
Full text linkThis is the first study reporting technical experts' judgments on future costs under different scenarios, for two time periods, for two policy options, and for two different DAC technologies. Experts project CO2 removal costs to decline significantly over time but to remain expensive (median by mid-century: around 200 USD/tCO2)
Climate impacts on nutrition and labor supply disentangled – an analysis for rural areas of Uganda
No full textThe entire agricultural supply chain, from crop production to food consumption, is expected to suffer significant damages from climate change. This paper empirically investigates the effects of warming on agricultural labor supply through variation in dietary intake in rural Uganda. We examine labor supply, food consumption, and overall social welfare under various climate change scenarios. First, we combine nationally representative longitudinal survey data with high-resolution climatic data using an instrumental variable approach. Controlling for calorie intake, our study shows that warming has a non-linear impact on agricultural labor supply, with the number of hours worked being optimized at an optimal temperature of 21.3°C. Using these econometric estimates to parametrize an overlapping generations model, we find that under RCP8.5, output per adult decreases by 20 per cent by the end of the century due to the combined effect of climate change on food consumption and labor supply
Staying home saves lives, really!
No full textWhen coronavirus disease (COVID-19) was spreading worldwide, many national and local governments started to impose socially restrictive measures to limit the spread of the virus. Such quarantine measures in different cities worldwide have brought a new trend in public safety improvement and crime reduction. Using daily crime reports in the U.S., this paper evaluates the immediate unintended effects of shelter-in-place orders on different crime categories using fine-grained spatial units (i.e., neighborhoods) rather than entire cities, states, or countries. Results for San Francisco suggest an immediate drop of between 10 and 20% points in the total number of crimes after one month from the introduction of the restrictions. In particular, we show that while theft, homicide, and traffic accidents have fallen sharply, domestic violence incidents and weapon possession offences were not affected by the lockdown. The results are robust to the inclusion of spatial and temporal dependence
Heat stress and the labour force
Full text linkHeat stress affects the health of workers through physiological and behavioural responses, in turn, affecting the labour force through impacts on labour supply, labour productivity and labour capacity. In this Review, we explore the extent to which heat stress affects the labour force and discuss the corresponding occupational health and economic impacts. The relationship between labour force outcomes and temperature is largely nonlinear, declining sharply beyond peak thresholds. Observed and projected labour losses are heterogeneous across regions, sectors and warming levels. High-exposure sectors such as agriculture and construction are projected to experience the greatest losses under future warming, with ~33%, ~25% and ~18% declines in effective labour across Africa, Asia and Oceania, respectively, under a 3 °C warming scenario. Labour losses are also expected in low-exposure sectors such as manufacturing and utilities, but Northern Europe tends to benefit in the short run. These collective heterogeneous labour impacts lead to considerable reductions in global gross domestic product (GDP) and welfare, with projected GDP losses of 5.9% in South Asia and 3.6% in Africa. Improved local-scale exposure–response functions and incorporating adaptation into economic models are required to advance understanding of heat stress impacts on labour
International Migration Projections across Skill Levels in the Shared Socioeconomic Pathways
No full textInternational migration is closely tied to demographic, socioeconomic, and environmental factors and their interaction with migration policies. Using a combination of a gravity econometric model and an overlapping generations model, we estimate the probability of bilateral migration among 160 countries in the period of 1960 to 2000 and use these findings to project international migration flows and their implications for income inequality within and between countries in the 21st century under five shared socioeconomic pathways (SSPs). Our results show that international migration increases welfare in developing countries, and closes the inequality gap both within and between low-skilled and high-skilled labor in these countries as well. In most developed countries, on the contrary, international migration increases the inequality gap and slightly reduces output. These changes are not uniform, and vary significantly across countries depending on their population growth and human capital development trajectories. Overall, while migration is strongly affected by inequality between developed and developing countries, it has an ambiguous impact on inequality within and between countries
Mapping inequities in global vaccine sentiment research
Full text linkIntroduction: Negative public sentiment towards vaccination (PSV) poses significant challenges to the effectiveness of immunisation programmes, with dramatic effects on morbidity and mortality for vaccine-preventable diseases. Yet, health research is often shaped by economic and geopolitical factors rather than countries’ epidemiological or healthcare needs. This study examines global patterns and drivers of PSV research on five vaccines—polio, measles, human papillomavirus, influenza and SARS-CoV-2—and evaluates the COVID-19 pandemic’s impact on research volume, focus and distribution. Methods: We conducted a machine-learning-assisted literature search on PSV without geographical, language or time constraints. Using natural language processing, network and statistical analyses, we examined the global PSV research landscape and identified geographical, epidemiological and economic drivers. Results: We analysed 13 287 articles and detected consistent literature growth from 1980 onwards, with vaccine-specific peaks following key licensing events. After 2020, publication volumes rose above projections for influenza (32%; 95% CI 20% to 46%) but declined for polio (−56%; 95% CI −68% to −26%) and measles (−17%; 95% CI −33% to 9%). Although PSV research had global coverage, its distribution was markedly imbalanced, largely shaped by country-specific economic factors. A few high-income countries (HICs) produced 72% of publications and the likelihood of a country being studied varied by income and vaccine. Foreign authorship also increased as the income of the studied country decreased (over 75% in low-income and middle-income countries vs below 50% in HIC). Conclusions: PSV research reveals persistent inequities, with a misalignment between countries leading research and populations most in need of its outcomes. These inequities, further exacerbated by COVID-19 disruptions, reflect systematic imbalances in global health. Our findings underscore the need to decolonise research by fostering leadership, agenda-setting and accountability that centre on the necessities of affected communities. Achieving this will require funding and publication reforms that promote equitable collaborations and elevate local priorities alongside long-standing global health objectives
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
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