Articles tagged with Population Growth
A recent study found that individual demographic characteristics such as age, sex, and marital status are stronger predictors of being childfree than state context. The study analyzed data from over 20,000 US adults and found varying levels of childfree populations across states, with California having the highest percentage at 22%.
A new study from Florida Atlantic University challenges the narrative that rising temperatures will drive Americans away, finding that heat alone isn't driving large-scale out-migration. Instead, population shifts are shaped more by economic opportunity, housing affordability and local quality of life than climate conditions.
The study found that representation of underrepresented racial/ethnic groups nearly doubled in cosmetic surgery patients, from 17% to 33.5%, between 2010 and 2023. This trend exceeded demographic shifts in the US population, with an average annual increase of 10% for underrepresented groups compared to 2% for the overall population.
A new study reveals that reducing mortality through large-scale investment in public health is a more effective and ethically sound strategy than encouraging people to have more children. By focusing on lowering mortality rates, countries can slow population decline and maximize the return on investment in their existing population.
A study by University of New Hampshire reports a significant increase in childless women, with 5.7 million more women of prime child-bearing age than expected in 2024. This shift has contributed to 11.8 million fewer births than expected over the past 17 years.
A Cornell University-led study finds that Americans are increasingly supporting a stronger safety net for older adults, with nearly 58% backing increased Social Security spending. The survey also reveals growing demand for government-provided care programs, such as help with everyday household tasks like grocery shopping and cleaning.
A recent study by IIASA researchers explores the socio-economic potential of India and China, focusing on human capital and labor force quality. The findings suggest that China will maintain an economic lead for most of the next half-century due to its more educated and higher-participating labor force.
The study analyzed the impact of climate change during the late Palaeolithic and found that humans migrated eastwards to adapt to new climate conditions. The European population may have decreased by up to half during the Younger Dryas event, but populations in central and eastern Europe increased.
The University of Texas at Arlington has launched a new Mobile Simulation Lab to tackle workforce and training challenges in rural areas. The lab, equipped with advanced patient manikins and simulation bays, will provide specialized training for local healthcare providers to expand their expertise.
A Rice University study has found that rising temperatures exacerbate competition within populations, leading to population crashes. This research provides a critical link between temperature increases and declines in species populations, shedding new light on the threats posed by global warming.
A new USC study reveals that the US is facing a shortage of 4.5 million homes due to policy missteps in the early 2000s, which led to a historic housing bubble and subsequent Great Recession. The crisis has disproportionately affected millennials and people of color, with racial and ethnic disparities in homeownership widening over time.
A new study suggests that the northern muriqui monkey population remains at risk despite being almost four times larger than it was in 1982. Habitat disturbances are thought to be a contributing factor to the population decline, with predation and environmental stressors such as climate change also playing a role.
A comprehensive study reveals that global crop yields have continued to grow at roughly the same rate since the 1960s, offsetting any slowdown in specific crops or regions. The findings highlight the need for sustainable food production and affordability to address future food security challenges.
A new study reveals a strong correlation between women's education and lower fertility rates in sub-Saharan Africa. The research team developed a method to forecast education-specific fertility trends, finding that higher levels of female education lead to lower fertility rates.
Researchers found that single-housed adult fish exhibited a longer egg-laying period and slower aging process compared to group-housed counterparts. The study suggests that early-life social environment may influence life-long attributes beyond the typical relationship between growth rate and lifespan.
A new study suggests that using state-of-the-art energy efficiency technologies can enable Europe's construction sector to almost eliminate its carbon emissions by 2060. Employing technologies like solar energy and heat pumps can reduce total energy used for heating and cooling buildings by up to 97%.
Researchers found a pregnant porbeagle shark was likely killed by a great white shark, highlighting the complexity of shark interactions. The study used satellite tags to track the shark's movements before it stopped transmitting, indicating it had been hunted and eaten.
A new study sheds light on fatty liver disease MASH's pathology, revealing T cell activation and growth in response to poor diet. The research holds promise for developing a biomarker test to track disease progression before it's at a late stage.
A new study from POSTECH forecasts over 110,000 premature deaths in Korea by 2050 due to PM2.5 exposure and rapid population aging. To mitigate this burden, PM2.5 concentrations must be reduced to approximately 6 µg/m³.
Researchers analyzed data from the English Longitudinal Study of Ageing and found that public spending cuts during austerity (2012-2018) led to a steeper increase in frailty with age compared to pre-austerity period. This association was observed across all population groups, but particularly among the oldest people.
Scientists used stable hydrogen isotope data from 871 dead birds at California wind and solar facilities to understand the geographic origin of affected birds. The study found that most birds killed at solar facilities were nonlocal and varied among species, with local birds making up nearly half of those killed at wind facilities.
A new study finds that heat-related cardiovascular deaths may more than double in the US by the middle of the century, with elderly and Black adults being most at risk. The projections suggest that reducing greenhouse gas emissions can mitigate this impact, but infrastructure interventions such as increasing tree cover may also be effe...
A new study by the Complexity Science Hub has pinpointed three main drivers of the Qing Dynasty's collapse: population explosion, elite competition, and financial burden. These factors culminated in a series of uprisings that led to the dynasty's downfall despite being wealthier than modern-day China.
A new study projects nearly 1 billion people will be living with osteoarthritis, the most common form of arthritis, by 2050. Currently, 15% of individuals aged 30 and older experience osteoarthritis, with obesity being a major risk factor.
A new study published in Wildlife Society Bulletin reveals that lead exposure from hunting ammunition is sickening and killing bald eagles, making them more susceptible to other dangers. The research, funded by Morris Animal Foundation, used innovative modeling tools to demonstrate the impact of lead poisoning on eagle populations.
Research says Syria's peacebuilding efforts must tackle the root causes of its failed state, including lack of inclusive governance and social contracts. The study also highlights the devastating impact of state failure on citizens, with widespread displacement, poverty, and food insecurity.
Research suggests that alternating years of low and high acorn production contribute to an increase in wild boar populations. Biennial episodes of acorn production coincide with the generation time of wild boars, leading to positive population growth.
New TOD index assesses development potential around transit nodes, ranking stations for their commercial diversity, walkability and land-use vibrancy. The study identifies areas suitable for residential growth, advising developers on informed urban planning.
A research group from Nagoya University found that large-scale flowering and seeding of dwarf bamboo boosts Japanese field mouse populations, especially in mast years. The team's study showed an increase in both large and small mouse populations two years after the event, indicating good breeding conditions.
A new UBC study finds that southern resident killer whales have been in an energy deficit for six of the last 40 years, with three recent years (2018-2020) being particularly dire. The researchers attribute this decline to lower Chinook salmon abundance and size, which are the primary food source for these whales.
Research from the University of Georgia shows that monarch populations have remained relatively stable over the past 25 years due to summer breeding growth. The study suggests that population growth during the summer compensates for losses due to migration, winter weather, and environmental factors.
A study of North American settlers in the St. Lawrence Valley found that female marriage ages increased while male marriage ages decreased due to a male-skewed sex ratio. The findings suggest that this demographic imbalance had significant effects on union formation and population dynamics.
A qualitative study among female physicians reveals that their knowledge of fertility and family planning affects their career choices. The study also identifies factors contributing to delayed childbearing among these medical professionals.
A recent study found that boosting the pink pigeon's numbers is not sufficient to prevent its extinction in the future. The species has a high genetic load of bad mutations, which puts it at risk of collapse if conservation efforts do not continue.
Researchers documented traditional wooden boats in the Zanzibar Channel, showing continued use despite modern transportation developments. The study highlights innovations such as outboard engines and portable generators, which have transformed fishing methods.
Researchers have tracked green turtle populations at Aldabra Atoll and found a significant increase in clutches laid since the species was protected in 1968. The study reveals an overall 2.6% annual rise in clutch numbers, offering hope for marine conservation success stories.
Access to modern cooking fuels like gas and electricity improves health and frees up time for women to seek information and education, ultimately leading to reproductive rights. The study found a significant connection between modern energy access and lower fertility rates in countries with high initial fertility rates.
A study by University of British Columbia researchers reveals that southern resident killer whales have access to four to six times more Chinook salmon in the Salish Sea than northern residents. This challenges the common notion of a prey shortage for southern residents during summer feeding grounds.
A new study estimates that Wisconsin's wolf population declined between 27-33% between April 2020 and April 2021, with a majority of additional deaths attributed to cryptic poaching. The researchers estimate the current wolf population is between 695-751, which may represent the maximum due to optimistic assumptions about growth.
A new study from Uppsala University reveals that males play a crucial role in maintaining genetic health by eliminating harmful mutations. The research found that selective pressure on males leads to the purging of deleterious mutations, resulting in healthier genes and increased reproductive capacity.
According to a new study, nearly 20% of groundwater wells globally are at risk of drying up if groundwater levels decline. This is largely due to increasing demand and inadequate governance or management, putting critical vulnerabilities to even modest reductions in groundwater levels.
A new study finds that racial diversity within a church is associated with higher average attendance over time, contradicting previous research. Methodist churches with more racial diversity had higher attendance, while those in white neighborhoods had lower attendance. The study's findings challenge the popular assumption of the Churc...
Researchers found that plant characteristics like generation time can predict how sensitive species are to changing climates. Short-lived plant species were shown to be particularly vulnerable to climate extremes. The study highlights the need for new population ecology research on woody plant species and tropical plants.
A 30-year study in Tanzania found that warmer climates slow the population growth rates of tropical birds, particularly those with smaller bodies and lower elevation ranges. Climate effects on insect abundance, predator activity, or fruit timing may also negatively impact bird populations.
A field experiment in Uganda shows that marketers can increase sales, profits, assets, and employees for small-scale entrepreneurs. The study highlights the positive impact of marketers on business growth in emerging markets.
A new study has found that American alligator hatchlings are more active and exploratory than spectacled caiman hatchlings, reflecting the strength of maternal protection. This research has important conservation implications for increasing population sizes of endangered crocodilian species.
The growing wolf population in Germany threatens legally binding nature conservation goals due to increased attacks on livestock. The researchers propose simplifying regulatory measures, actively managing the wolf population, and providing financial support for farmers to implement conservation efforts.
A new study reveals that periodontitis-causing bacteria Porphyromonas gingivalis borrows growth molecules from harmless Veillonella parvula, enabling its replication and causing gum disease. The relationship is one-directional, with V. parvula receiving no obvious benefit from sharing its growth molecules.
A new study projects that major US cities will experience significantly increased exposure to extreme heat and cold by the end of this century. The study's authors used a novel approach to account for urban development and its interactions with climate change to predict changes in population-weighted exposure to extreme temperatures.
Menhaden growth in the Gulf of Mexico is primarily influenced by environmental conditions such as wind and climate cycles, whereas in the Atlantic, fishing pressure is the dominant factor. The study suggests that reducing competition among menhaden may lead to increased growth rates.
Researchers discovered that corals and sea anemones control algal population size by limiting nitrogen availability. This balance is crucial for reef survival in a changing climate.
Researchers analyzed 208 plant species across various environmental factors, finding that all three factor types have similar effects on plant performance. This study highlights the importance of considering multiple factors when predicting future biodiversity changes.
As the population ages, surgery rates are increasing, leading to a higher risk of complications and death for elderly patients. The BJS analysis reveals that more than one in ten people in England will undergo surgery at 75+, with estimated costs exceeding €3.2 billion by 2030.
Researchers found that a combination of wolf reduction and short-term caribou penning during calving season maximized population growth. Adaptive management is recommended for direct population restoration of endangered species.
A study published in PLOS ONE found that 78% of marine mammal populations and 75% of sea turtle populations increased significantly after being listed under the U.S. Endangered Species Act. Conservation measures such as tailored species management and fishery regulations appear to have been successful in promoting species recovery.
A recent survey in Iceland found that only half of residents evacuated during the 2010 Eyjafjallajökull eruption did so. The researchers argue that a one-size-fits-all approach to evacuations is unlikely to work due to population diversification and changing community dynamics.
A recent study published in Current Biology found that orangutans are critically endangered and their numbers have not increased as reported by the Indonesian government. The research highlights the need for a new conservation approach given the ongoing decline of orangutan populations.
This study examined the impact of neighborhood characteristics on the growth of alcohol outlets from 2000 to 2013 in 53 California cities. It found that lower-income areas with larger populations and higher incomes experienced greater growth in bars, restaurants, and liquor stores.
A study on Carolina chickadees in Washington, D.C. reveals that non-native plant biomass can reduce arthropod populations, forcing birds to switch diets or reproduce less. The findings suggest a link between non-native plants and the decline of insectivorous bird populations.
Dual-eligible beneficiaries experience high rates of chronic illness and have lower average annual spending growth compared to other Medicare beneficiaries, especially in younger age groups.