Articles tagged with Human Population Growth
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A recent ASU climate study forecasts a substantial rise in human exposure to extreme temperatures in the US during the 21st century. By the end of the century, the annual heat exposure is expected to increase nearly 30-fold, with major metropolitan regions like New York and Los Angeles facing significant changes.
The study finds that rampant human population growth is causing massive reductions in global mammal populations, including iconic species like Tibetan wild yaks and African zebras. The researchers warn that future ecosystems will be drastically different without drastic changes in human behavior.
Researchers found that ancient civilizations underwent three phases of sociopolitical development, with population growth being the first driver, followed by innovations in information processing and storage. The study suggests that these advances enabled societies to continue growing beyond a certain scale threshold.
Researchers use computer simulations to model the expansions of four archaeological cultures in South America, showing that some expansions may be due to similar demographic processes as the Neolithic in Eurasia. The study found that population growth and migration can explain the spread of these cultures across vast distances.
Intergenerational occupational mobility in the US has declined since 1850, with relative decline in status of many occupations. Only a few high-status occupations retained stable percentile ranks, while recent generations face reduced upward mobility.
A global team of scientists declares a climate emergency, warning of 'untold human suffering' without drastic shifts in human activities contributing to greenhouse gas emissions. The declaration outlines six areas of action, including energy conservation, reducing short-lived pollutants, and stabilizing the global population.
Experts argue that improving access to effective contraception is crucial in reducing greenhouse gas emissions and mitigating the environmental crisis. The authors suggest that by slowing population growth through increased use of contraception, we can reduce emissions globally by an estimated 40% or more.
African women often want more children than they have, challenging common misconceptions about the reasons for population change on the continent. The study highlights the importance of addressing cultural factors impacting family planning decisions.
A new article connects future population growth, agricultural development and infectious disease, highlighting the need for balance in agriculture to prevent disease outbreaks. Solutions proposed include improving hygiene, genetic variability, education, and predictive models.
Researchers found that African countries with high population density suffer more environmental degradation on average. To mitigate this, dedicated family planning and government policies are needed to promote economic development without compromising environmental integrity.
Scientists studied Namibian pastoralist attitudes towards human-wildlife conflicts, finding they proposed solutions that suggest tolerance for predators. The findings highlight the complexities of managing human/wildlife coexistence in agricultural areas.
The study reveals that adolescent health has not kept pace with population growth, with significant increases in obesity, anaemia, and non-communicable diseases. Investments in adolescent health are needed to address these challenges, particularly in low-income countries where adolescents carry a heavy disease burden.
A new study by IHME finds that the average US outpatient visit costs nearly $500, highlighting the high cost of healthcare in the country. The study also estimates that universal health coverage (UHC) for all nations would require a significant increase in admissions and visits, with costs estimated at $576 billion.
A new study has revealed a significant rapid increase in growth across populations in Thailand, China and Vietnam 4,000 years ago. The researchers used human skeletal remains to measure prehistoric population growth and found a second subsequent rise in the Iron Age.
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.
Researchers have calculated the capacity of North American forests to sequester carbon, finding that they have reached 78% of their potential and will only gain 22% more in the next 60 years. This is a critical finding with implications for forest management, climate scientists, and policymakers.
A study examines the relationship between alcohol and fertility in a hunter-gatherer society, finding low infant and juvenile mortality, slow growth, and high fertility at an early age. The Baka pygmy people of Cameroon exhibit a significant decrease in fertility since 2011, corresponding with the arrival of cheap alcohol.
Research finds that Trump's use of inflammatory language activated latent support among Republican voters in areas experiencing Latino population growth. The study used geocoded surveys to track changes in voter sentiment before and after Trump's campaign announcement and infamous statements.
Over 15,000 scientists from 184 countries co-signed a warning letter highlighting the need for urgent action to avoid substantial and irreversible harm to the Earth. The letter notes that only one of nine areas has improved, including ozone depletion, forest loss, climate change, and human population growth.
Researchers at Wits University found that the Willems method of dental age estimation is more accurate than the Demirjian method in different populations. The study highlights the need for population-specific standards for age estimation in Africa, where birth registry and date of birth challenges are common.
A new study finds that reducing greenhouse gas emissions to protect future generations from environmental destruction could save tens of billions of dollars annually, especially in wealthier countries. By valuing human population differently, policymakers can make more informed decisions about climate policy.
A study links population growth to increased social cost of carbon dioxide and potential savings in climate mitigation costs by reducing emissions. The model suggests that minimal population growth can lead to substantial annual savings.
Researchers at the University of Liverpool have created the first evidence-based growth standards chart for dogs, allowing veterinarians to assess and monitor growth in canine patients. The study used data from over six million dogs visiting Banfield Pet Hospitals, resulting in five weight ranges with separate male and female curves.
A new study found that Scottish badger populations are more likely to thrive in areas with higher minimum winter temperatures and lower elevation. However, the predicted increase in human population in the Scottish Highlands may counteract these benefits, highlighting the need for context-dependent responses in conservation management.
A new study on environmental modeling reveals that climate change is only one of many inter-related threats to natural systems supporting human societies. The research argues that incorporating inequality, consumption, and population into climate models would provide a more realistic guide for policymaking and sustainable development.
A new study published in Nature reveals 83 new genetic variants strongly influencing human height, shedding light on the poorly understood area of human biology. The research found rare genetic changes with large effects on height, up to 2 cm, and may lead to precision medicine approaches for growth disorders.
Researchers found that juvenile IGF-1 concentrations predict heavier weight, greater survival to reproductive maturity and earlier birth, but also shorter adult lifespans. Measuring IGF-1 during the first year of life can be used to predict later-life traits in wild mammals.
The Earth's critical zone is a vital layer that supports life and human activities. Research in this area reveals the importance of time, depth, and coupling in understanding the zone's dynamics. This knowledge helps predict and mitigate negative effects, such as soil degradation and water quality issues.
The US Department of Transportation has awarded $14 million to the University of Washington-led Pacific Northwest Transportation Consortium to improve regional mobility. The grant will focus on addressing diverse mobility challenges, including alleviating traffic congestion and improving transit accessibility for people with disabilities.
Achieving the SDGs would lead to a global population of between 8.2 and 8.7 billion by 2100, peaking by 2060, according to a new study. The study highlights the impact of increasing female education and universal access to reproductive health services on reducing fertility rates and population growth.
Regulated hunting in New Jersey helps control black bear population growth and reduce nuisance reports. The state's comprehensive management plan and public education programs are key to balancing bear preservation and human welfare.
A study published in Nature Communications reveals that human activities have expanded at a slower rate than population and economic growth, but still have extensive environmental impacts. The research found that three-quarters of the planet is significantly altered and 97% of species-rich regions are seriously altered.
Researchers developed a mathematical framework to identify key life cycle components driving population growth. This approach can be applied to existing data to provide more robust answers to demographic questions in ecology and evolution.
Research found that agriculture led to rapid male population expansion in Neolithic Time, with a 10- to 100-fold increase in population size. This growth occurred after the advent of agriculture, suggesting that it was a driving force behind the initial male population expansion.
Researchers found that loss of specific genes induces osteochondroma formation in mice, identifying a population of cells responsible. The study suggests therapeutic strategies targeting these cells could treat related skeletal diseases.
A new study by MIT scientists predicts widespread water shortages in Asia by 2050, with 1 billion more people becoming water-stressed. Economic and population growth, combined with climate change, exacerbate water-access problems.
A new study by the University of Southampton found that people are worried about the increase in global population, focusing on food and water shortages, species extinctions, and catastrophic consequences. The researchers discovered that individuals who perceived greater risk were generally those who indicated a willingness to adopt mi...
An international geoscientific group proposes the recognition of a new geological epoch, the Anthropocene, marked by rapid environmental changes caused by human activities. The study finds that human impacts are recorded in geological strata as quantifiable signs, distinguishing it from the relatively stable Holocene epoch.
A new study finds that prehistoric farming and non-farming societies in North America and Europe experienced the same long-term annual growth rate of 0.041 percent, challenging the notion that agriculture accelerated population growth.
A new NIH study found significant racial and ethnic disparities in fetal growth, with minority fetuses scoring below the 5th percentile due to hereditary and environmental factors. This could lead to unnecessary tests and procedures for healthy pregnant women of color.
A study by Umeå University researchers found that population growth is responsible for 86% of the increase in dengue incidence in Singapore, with climate change and urban heat islands contributing to the remaining 14%. The findings have significant implications for predicting future trends in dengue epidemics.
The world population is expected to surpass 11 billion people by 2100, driven primarily by Africa's rapid population growth. The UN projects that Nigeria will have a 90% chance of exceeding 752 million people in 2100, with the US population projected to reach 450 million by century's end.
A new study has analyzed data from Great Britain, the US and Sweden to profile human population growth and its consumption of energy. The research found that energy use generally outpaced population growth over the past few hundred years.
The number of global cardiovascular deaths has risen by 41% between 1990 and 2013, but death rates within specific age groups have dropped by 39%. Cardiovascular diseases remain a leading cause of premature death globally, with population aging contributing to an estimated 55% increase in cardiovascular disease deaths.
A new study predicts that global water demand will outpace supply by mid-century unless innovative solutions are developed. Researchers used a mathematical model to analyze past trends and suggest a similar pattern of technological advancements could alleviate future shortages.
A new study suggests that the flightless birds, moa, were completely extinct when New Zealand's human population reached around 2500 people. Researchers found that during the peak period of moa hunting, there were fewer than 1500 Polynesian settlers in NZ, with a population density of about 1 person per 100 square kilometers.
A study by researchers at the University of York found that domestic fish supplies have fallen to their lowest point in over 70 years, with only one fifth of recommended consumption levels met. The report also highlights the environmental costs of aquaculture and calls for sustainable production methods.
The creation of the Vuoksi River approximately 6,000 years ago led to a significant cultural shift in eastern Finland. The rapid decrease in Lake Saimaa's water level revealed fertile land, flourishing elk populations attracted innovative human settlements, and a new culture emerged.
A new study by Chinese and American conservation biologists quantifies China's recent economic growth on its coastal ecosystems. The research shows that after reforms declared in 1978, many human economic activities with deleterious environmental impacts increased markedly.
Research found that wolf pack fate and reproduction are affected by breeding female deaths, with smaller packs more vulnerable. The study suggests wolves can compensate for breeder loss through rapid replacement or increased reproductive success.
A recent study reveals that human activities near Lake Malaŵi are driving a significant increase in urogenital schistosomiasis, a debilitating tropical disease. The research suggests that changes in land use, overfishing, and ecological alterations have created a favorable environment for the spread of the disease.
Research reveals a long-term hidden threat to the environment: shrinking households. A study by Michigan State University found that as global household size declines, it will double the number of homes needed per-capita, straining natural resources and the environment.
The study found that while global smoking prevalence decreased between 1980 and 2012, the number of cigarette smokers worldwide increased due to population growth. In 2012, the highest smoking rates were found in countries such as Russia and Indonesia, with over 50% of men smoking daily.
A new study published in the Proceedings of the National Academy of Sciences finds that climate change will increase global water scarcity, affecting millions of people worldwide. The study estimates that 40% more people will be at risk of absolute water scarcity due to climate change, with significant regional differences in impacts.
The latest themed issue of Reproductive Health Matters explores a new development paradigm to prioritize health, ensuring equitable care for all. The issue critiques the Millennium Development Goals model and advocates for a human rights approach to addressing health disparities.
The WorldPop website provides open access to global demographic data, helping charities, policy-makers, and researchers tackle challenges like poverty and public health. The project combines country-specific data with satellite imagery to create detailed population distribution maps.
Researchers from North Carolina State University developed a technique to determine winning strategies in multi-player real-time strategy games. The study found that timing of attribute improvement is linked to the likelihood of team success, and that individual character attributes vary widely depending on team composition.
New research from Ohio State University predicts that the growing human population will lead to an increase of 10.8% more threatened species by 2050. The study suggests that meaningful biodiversity conservation efforts must take into account the expanding human population footprint, which can exacerbate extinction threats.
The study found that human population density is a significant threat to extinction, with a 3.3% increase in threatened mammals and birds over the next decade. Conservation efforts should consider human population density to mitigate biodiversity loss.
A team of scientists, including Dr Paul Brotherton from the University of Huddersfield, investigated haplogroup H mitochondrial genomes from ancient human remains to understand modern European populations. The results show a significant population upheaval around 4,000 BC, potentially due to large-scale migration or growth.