Articles tagged with Urbanization
A field experiment in China found that people tend to increase activity when informed that others are themselves increasing activity, suggesting a low-cost intervention for promoting economic activity during the pandemic. The study suggests that social cues can be a useful signal for evaluating risks and making decisions about activities.
A new study from the University of Illinois reveals that nearly all soil samples in Chicago contain high levels of lead, with some areas reaching up to 3,000 ppm. The findings highlight the need for further monitoring and mitigation efforts to address environmental justice concerns.
Residents in eastern US cities experience up to 4.9 degrees Celsius increase in nighttime urban heat stress index, with extra 30 minutes of uncomfortable weather per degree C temperature increase. This effect is more pronounced in the southeastern US, where residents face up to five extra hours of uncomfortable weather during summer.
Researchers developed a framework to evaluate urbanization's impact on food and land use biodiversity. Urban areas can provide a range of approaches to increasing food diversity, including peri-urban agriculture and small farms. Strengthening food biodiversity among the urban poor can improve nutrition and security.
A new study reveals that by 2040, between 64 and 100 million households in India, Brazil, Mexico, and Indonesia will face cooling challenges, leading to potential discomfort. The study highlights the importance of considering household characteristics beyond income and climate in predicting air-conditioning adoption.
A new study reveals that compound hot extremes, where days and nights are simultaneously extreme, pose significant health risks, especially for female and older residents. Urban compound hot extremes have increased by 1.76 days per decade in eastern China, driven by anthropogenic emissions and urbanization.
Researchers found that tree-cover area, impervious surface area, and building density have a consistent impact on building energy use across cities. The study's results suggest that the relationship between urban form/density and energy use is city-specific and distance-specific.
A new study by Carnegie Mellon University researchers found that Airbnb units cause a mild decrease in long-term rental supply, including affordable housing, while expanding the rental market. The study suggests a new tax to alleviate resulting inequities and maintain social equality.
A new study finds that urban areas are up to 10 times more sensitive to variations in precipitation than rural areas, increasing landslide hazard. Human-made changes to topography and vegetation loss in urban areas weaken slopes and make them more prone to landslides.
A study by the San Francisco Estuary Institute, the Nature Conservancy, and the University of Illinois suggests that access to nature may contribute to lower COVID-19 rates, regardless of racial or socioeconomic identity. The research team found a strong correlation between green spaces and decreased COVID-19 incidence rates.
A new study reveals that city butterflies and moths have genetically adapted to the warmer urban environment, starting their overwintering state later in the year. This allows them to take advantage of a longer growing season, reproducing successfully before winter sets in.
A lidar mapping study of ancient Teotihuacan shows that the city's engineers reshaped the landscape for construction, rerouted rivers to align with astronomical significance, and identified hundreds of previously unknown architectural features. The study confirms how these modifications continue to influence modern activities in the area.
A team of researchers analyzed over 31 million iNaturalist records to find that highly active users primarily post observations of plants and insects, while large animals are underdocumented. The study provides insights into urban biodiversity and the distribution of biological data.
Urban climate change adaptation measures can improve human health and wellbeing, reducing cardiovascular and respiratory diseases, heat stress, and exposure to food-borne diseases. Early warning systems and policy changes can deliver immediate benefits.
A study of 20 US cities reveals that urban intensity, characterized by paved landscapes and high population density, is a stronger correlate with mammal biodiversity than income. While the 'luxury effect' shows some correlation between income and biodiversity, it's not strong enough to explain the observed patterns.
Research team investigates urbanization's impact on farmland bird communities in Bangalore, India, finding that urbanization homogenizes bird species, eliminating insect-eating birds essential for pest control. The study highlights the importance of preserving biodiversity to maintain ecosystem resilience and food production systems.
A study by Osaka City University reveals that urban lighting and heat delay insect hibernation, allowing insects to enter hibernation up to 3 weeks later than in rural areas. The findings suggest that increased nighttime light and heat from urban areas interfere with the natural photoperiodism of insects.
A new study found that larger cities produce more income inequality, with the poor experiencing a decline in quality of life. The researchers analyzed data from municipal areas across the US and found that the top 10% of earners gain an increasingly large portion of wealth as cities grow.
A new study finds that urbanization is causing many mammal species to grow bigger, contrary to Bergmann's Rule. The study analyzed over 140,000 measurements of body length and mass from North American mammals collected over 80 years.
A traditional Tanzanian diet rich in whole grains, fruits, and vegetables has been shown to have a beneficial effect on inflammation and immune system functioning. In contrast, an urban Western-style diet with more saturated fats and processed foods led to increased inflammatory proteins.
The study analyzed 841 large cities' urban built-up areas expansion, population growth, and greening changes, revealing a huge pace of urbanization disparity. China demonstrated the biggest urban expansion, while cities in low-income countries lagged behind in infrastructure development and greening.
A new study found that city-dwelling tree swallows bred more successfully due to warmer temperatures, but their blood contained higher levels of mercury from contaminated insects. Urbanization's impact on wildlife health is a growing concern as the climate continues to warm and land use changes threaten biodiversity.
Researchers analyzed language use and population distribution to find links between ethnolinguistic diversity, urbanization, and armed conflict. The study suggests that policies addressing ethnolinguistic tensions can minimize negative impacts on economic growth.
A recent study published in Advances in Atmospheric Sciences estimates that the Yangtze River Delta region contributes around one-third of China's total hydrofluorocarbon emissions. The study found that the region has a higher emissions intensity per capita, area, and GDP compared to national and global levels, with HFC-23 being the pr...
Researchers used data science and machine learning to forecast urbanization patterns, predicting a 1.8-5.9-fold increase in urban areas by 2100. Global simulations show countries transitioning from rapidly to steadily to urbanized over time, with varying impacts on environment and society.
A new Johns Hopkins University study finds that for every percentage point increase in roads and impervious surfaces, annual floods increase by 3.3% on average. The research team used a large dataset of streamgages and impervious surface data to isolate the effect of urbanization on flooding.
Researchers found that urbanization decreases 'flashiness' -- rise and fall rates of water flow in streams -- in arid urban watersheds. This is the opposite pattern observed in wetter regions like the East. The study suggests lessons for better stormwater management everywhere.
A new study reveals that urbanization shifts the seasonal cue for spring plant growth, with cities in cold climates producing leaves and flowers earlier and those in warm climates delaying it. The research found that other factors such as pollution and changes in humidity also influence plants' seasonal patterns.
Researchers found city homes to have a higher diversity of chemicals and fungi, while jungle huts had fresher air and natural materials that promote human health. Exposure to outdoor germs and natural materials may benefit the human microbiome.
A Kanazawa University study found Indonesian street vendors in Bandung are adapting to changing society by building networks, employing protection, and adopting new techniques. These efforts show that vendors can resist aggressive urbanization through subtle forms of resistance.
A study found that carnivores interact with each other more frequently when sharing green spaces in suburbs, contrary to previous theories. Preserving green space is crucial for wildlife species, providing cover, food, and navigation without human danger.
Wild bees experiencing widespread declines due to urbanization may be more male-dominated as females decline in numbers, impacting pollination and reproduction rates. This study suggests considering sex-specific differences in bee behavior when analyzing environmental change effects on populations.
A study by NC State University found that urbanization and scale-insect abundance, rather than latitudinal warming, are key drivers of tree health in cities. In the Southeast US, cities at mid-latitudes showed poorer tree health due to high volumes of tree-destroying scale insects.
Provinces in China with tighter cultures exhibit lower rates of radical innovation but higher incremental innovation, urbanization, economic growth, and gender equality. Tighter cultures are also associated with improved health and tolerant attitudes towards others.
A recent study found significant correlations between the population structure of Aedes aegypti mosquitoes and urbanization levels in São Paulo City. The researchers discovered that environmental pressures due to urbanization lead to the selection of phenotypes better adapted to the conditions, resulting in wing shape variability.
A new WCS-led study links tiger fate to demographic transition in human populations. The research highlights the importance of urbanization and education in tiger conservation, emphasizing the need for engagement with cities to save tigers.
A study published in Family Medicine and Community Health found that family support plays a significant role in motivating individuals with type 2 diabetes to improve their self-management behaviors and glycemic control. The research highlights the importance of motivation in managing chronic diseases like diabetes.
Human settlements with low flood protection levels tend to resettle further away from rivers after floods. Satellite data analysis in 16 countries showed that the distance between humans and rivers increased, especially in areas with high flood fatalities.
A shocking study reveals that one third of the world's protected areas, covering twice the size of Alaska, are under intense human pressure. The authors warn that this will undermine biodiversity loss goals if widespread degradation continues.
A new study finds that one-third of protected land globally is under intense human pressure, threatening conservation efforts. However, protected areas designated after 1993 have lower levels of human pressure within their borders.
A North Carolina State University study found that two fish species, western blacknose dace and creek chub, evolved different body shapes in response to urbanization. The study showed that the dace became more streamlined, while the chub developed deeper bodies in urban areas. Lab experiments confirmed that genetic differences played a...
Researchers found that urban-induced warming in Beijing increased with urban land expansion, but the rate of increase slowed down after 2000. The study also revealed an interrelationship between urban-induced warming and heat waves, suggesting that urban expansion may heighten heat waves in urban areas.
A new WCS paper finds that global demographic and economic trends could create conditions for a possible renaissance of nature. The authors propose protecting threatened wildlife and wild places, creating sustainable cities, and inspiring consumer choices to conserve the natural world.
Research from Florida State University found that urban areas in Florida experience shorter and more intense wet seasons compared to rural areas. The study indicates a trend of decreasing wet-season length by 3.5 hours per year in urban areas.
A study by RUDN University scientists suggests that urbanization can increase soil organic carbon stocks, particularly on less fertile soils. This process could help mitigate the impacts of climate change.
A recent study reveals that urbanization is driving evolutionary changes in various species, including mosquitoes, bedbugs, and rats, with potential consequences for human health. The researchers argue that cities are becoming a novel ecosystem, influencing the evolution of species that may, in turn, affect our lives.
A new study by Carnegie Mellon University researchers found that environmental regulations can reduce pollution emissions from urbanization without hindering economic growth. The study used annual data on air quality and economic indicators to assess the impact of stricter pollution standards, finding no negative effect on GDP.
Researchers in Mozambique found that people who live in electrified urban areas retire earlier but still get sufficient sleep, contradicting previous assumptions. The study suggests that the relationship between electricity and sleep loss is more complex than previously thought.
Researchers analyze coupling relationship between urbanization and eco-environment, finding external elements dominate metabolic structure. This leads to accelerated drop in metabolic emergy intensity and increased environmental load. The study provides quantitative reference points for effective decision-making.
A Chinese research team proposes a multi-dimensional system dynamic (SD) simulation model to understand China's urbanization process. The model provides a comprehensive view of the mechanism constrained by environmental sustainability, with an ultimate urbanization level predicted in multiple scenarios.
A study by University of Michigan researchers found that bumblebee populations are higher in Detroit than surrounding less-urbanized areas. Vacant lots may provide essential nesting sites and food sources for the bees. The results suggest that urban landscapes can be managed to support native bee conservation.
A new study from the Santa Fe Institute proposes a quantitative index to measure sustainable development in cities, revealing systematic correlations between urbanization and poverty reduction. The research also highlights persistent inequalities in access to housing and services across neighborhoods.
Long-term datasets show mosquito populations increased ten-fold in NY, NJ, and California over the past five decades. Urbanization and residual DDT concentrations drove these changes, contrary to initial expectations linked to climate change.
Researchers used high-resolution connectivity maps and satellite imagery to predict how future land-use change and climate change will alter landscape connectivity for six species, including black bear and red wolf. The study highlights the urgent need to protect and restore habitats to promote species survival.
A Yale-led study provides a spatially explicit dataset of urban centers from 3700 BC to A.D. 2000, offering insights into long-term historical urbanization trends and patterns. The dataset allows researchers to map and visualize city-level population changes through time, shedding light on human interactions with the environment.
Cities around the world are exploring innovative ways to reduce their carbon footprint, from solar panels on buildings to optimized transportation systems. Researchers propose various strategies to improve water management, food supply chains, and air quality in urban areas.
Despite failure to meet Millennium Development Goal target, papers showcase positive developments and point the way forward for improved sanitation and drainage in cities. The journal explores persistent gaps in urban sanitation provision and ways to address them.
A new NASA study reveals that the presence of vegetation is crucial in mitigating urban heat island effects, which can raise temperatures by 1.9°C in urban areas compared to surrounding rural areas. The study found that replacing impervious surfaces with vegetation can reduce temperature differences by up to 1.3°C.
Urbanization leads to more thunderstorm initiation events, posing dangers like lightning and flash floods with little warning. The risk is higher on weekdays due to increased aerosol levels from commuters.
A study found that orb-weaving spiders living in urban areas tend to have larger bodies and increased reproductive abilities compared to those in natural environments. The spiders' size is associated with the level of urbanization, with larger bodies found in areas with more hard surfaces.