Articles tagged with Africa
Researchers found that La Nina's cold phase leads to marginal rainfall and stronger winds in East Africa, while El Niño warm phase causes weak wind conditions with frequent rain. The study tracked climate variations to the last ice age using Lake Challa sediment cores.
A study funded by the Wellcome Trust found that sending text message reminders to healthcare workers in rural Africa improved the implementation of national guidelines for treating malaria. The intervention resulted in a 25% improvement in health workers' practices, leading to more patients receiving accurate antimalarial treatment.
A comprehensive review and data synthesis highlights the emergence of HIV epidemics among men who have sex with men in the region, with high rates of risky sexual behavior and concentrated epidemics in countries like Egypt and Sudan. The authors stress the need for expanded HIV surveillance and access to prevention and treatment services.
A new species of pearl-flowered legume, Psoralea margaretiflora, has been discovered in the Sneeuberg Centre of Floristic Endemism in South Africa. This discovery highlights the importance of exploring the poorly explored Great Escarpment in southern Africa.
A study published in PhytoKeys has sorted out the names of three Australian Cucurbitaceae species collected in 1856, which are distinct from each other and one is closest to the honeymelon. Molecular data link herbarium science with molecular results to resolve economically important group identities.
A new study suggests that adopting the World Health Organization's treatment initiation criteria for HIV-infected individuals would significantly reduce the country's HIV incidence, extend life-years, and ultimately save money. By starting ART earlier, South Africa could prevent more than 120,000 additional life-years by 2040.
A study by the University of Minnesota found that full moons increase lion attacks on humans in Tanzania, with most attacks occurring between dusk and 10pm. The research suggests that lions are hungrier after a full moon due to limited hunting success under daylight conditions.
A new breed of chicken, Kuroiler, has been found to significantly outperform native chickens in terms of survival rate, egg production, and body weight gain. This hybrid chicken is well-suited for resource-poor village environments and requires minimal feed, making it an attractive option for rural farmers.
A University of Minnesota study found that full moons signal increased lion attacks on humans in Tanzania, with over two-thirds of attacks fatal. The research analyzed nearly 500 lion attacks between 1988 and 2009, revealing a clear pattern of increased danger after the full moon.
A study found that transferring HIV patient care from doctors in hospitals to nurses in primary health clinics resulted in equivalent or better health outcomes for stable patients on antiretroviral therapy. The transfer strategy was also cost-effective, with a 11% lower cost than doctor-managed hospital-based outpatient treatment.
A study published in Molecular Biology and Evolution found that non-African populations carry a piece of DNA from Neanderthals, indicating interbreeding between the two species. The genetic variation is present on the X chromosome and has been confirmed through independent analysis.
The NASA Aura satellite measures pollution 'butterfly' formed by nitrogen dioxide (NO2) emissions from agricultural fires in central Africa. High concentrations of NO2 were detected over the Democratic Republic of Congo and northern Angola, posing a threat to air quality and health.
A new study published in The Lancet found that the number of sexual partners, rather than concurrent partnerships, is strongly predictive of HIV transmission in women. Researchers analyzed data from over 87,000 individuals in South Africa and found that men with multiple lifetime partners were more likely to transmit HIV.
A new study found that ivermectin dramatically reduces malaria transmission among people living in Senegalese villages. Ivermectin was administered as part of a campaign to fight onchocerciasis and appeared to kill malaria-carrying mosquitoes, resulting in a 79% decline in mosquitoes carrying Plasmodium falciparum.
Researchers have discovered a human ancestor older than previously believed, contradicting the Out of Africa model and suggesting a different role for Homo erectus. The findings, published in PLoS One, indicate that Homo erectus went extinct before modern humans arrived in Indonesia.
Research from International Broadcasting Trust and University of East Anglia reveals UK television left audiences unprepared for Arab Spring. The study finds that North Africa and Middle East received just 5% of international non-news factual coverage in 2010, with Libya and Yemen receiving little or no coverage.
A report by the International Vaccine Access Center highlights the poor availability of essential health products in Sub-Saharan Africa, particularly in remote areas. The report explores how public-private partnerships can improve distribution systems and enhance access to essential medicines.
Researchers from the UK, South Africa, and China are collaborating on 12 Pathfinder projects to address global challenges. The joint data project aims to provide new perspectives on UK issues and tackle topics such as wellbeing, social mobility, and economic growth.
Experts from the Middle East and 12 African countries meet in Dubai to develop a strategy for preventing Rift Valley fever outbreaks, which can disrupt livestock trade and threaten food security. The new approach aims to expedite the flow of livestock products while increasing safety in the region.
A mosquito-borne virus that infected monkeys may cause human outbreaks if it adapts to urban mosquitoes, warns a new study. The 'fever from the forest' dengue virus has spread globally, causing 100 million cases annually and 50,000 deaths.
A new study using satellite observations and high-resolution images found that brief changes in soil moisture can affect storm generation in the Sahel region of West Africa. This could lead to improved predictive modeling for crops, which are crucial for the people affected by droughts in the area.
A new collaborative research center aims to study the diversity of Arabic manuscripts from a historical and comparative perspective. The project, led by Prof. Dr. Tilman Seidensticker, will analyze nine layout characteristics to understand their functions in everyday transcriptions.
Scientists have launched a major push against Striga, a parasitic weed causing up to $1.2 billion in damage to maize and cowpea crops in sub-Saharan Africa. The project aims to introduce proven technologies for fighting the weed, resulting in 50% higher yields for farmers.
Researchers have rediscovered four new species of purse-web spiders in South Africa, highlighting the urgent need for conservation efforts due to habitat loss and urbanization. The study provides valuable insights into the biology and evolution of these unique spiders.
Research sheds light on origins of Cryptococcus neoformans, a fungal infection that causes meningitis in HIV patients. The study reveals the pathogen evolved and spread from Africa to Asia over 7,000 years ago.
The project aims to develop a Microbial Fuel Cell-based charger that can increase access to healthcare via mobile applications in sub-Saharan Africa. The charger would cost around $1 and could charge a phone in 24 hours, making it a low-cost solution for households lacking power.
A proposed Emergency Surgery Coalition aims to prevent supply delays and duplication of services after natural disasters. The coalition, involving experienced surgical humanitarian agencies, could support improved surgical delivery.
A new study in South Africa found that HIV-positive individuals take almost as much risk in their sexual behavior when they know their partner is HIV-negative or don't know their status, as when they know their partner is already infected. Couples-based HIV counseling is recommended to address this issue and reduce transmission.
The human super-brain is believed to have emerged in Africa no later than 75,000 years ago, fueled by the development of bipedalism and tool-making. This collective mind enabled the creation of complex thoughts, language, art, and technologies.
The US is expanding its 20-year-old program to secure and destroy Cold War-era nuclear and other weapons of mass destruction in East Africa. The Cooperative Threat Reduction Program aims to counter the threat of bioterrorism in volatile regions where deadly diseases like Ebola and Marburg viruses occur naturally.
The Lancet Series on Stillbirths reveals over 2.6 million stillbirths annually, with 98% in low-income countries, and explores causes and actions to halve this devastating event.
Researchers at IITA and CIFOR found that widespread deforestation in West Africa's tropical forest region is driven by low-input farming practices. Increasing fertilizer use could have spared 2 million hectares of forest from being cleared, instead promoting sustainable agriculture and higher yields.
Research reveals high concentrations of carcinogenic PCBs in West Africa's coastal regions, with possible sources including illegal waste dumping and ship graveyard pollution. The study collected air samples from ships and land-based stations, pointing to the large ships' graveyard in Mauritania as a significant source of contamination.
Research from Concordia University reveals that wisdom has an impact on how people cope in situations and whether they are more or less satisfied with life. Hallmarks of wisdom include knowledge, deep understanding of human nature, empathy, and the flexibility to see issues from others' perspectives.
A research study has found the first green frog fossil in Murcia, confirming the presence of the green toad in south eastern Spain at the end of the Early Pleistocene. The discovery provides key osteological clues and sheds light on the reasons behind its local extinction.
A new study predicts significant changes in arable land globally and regionally due to climate change. Regions like China, Russia, and the US are expected to see an increase in farmland area, while Africa, Europe, India, and South America may lose land.
The Government of Canada has announced a breakthrough in producing an affordable and reliable malaria treatment, expected to treat 200 million cases and prevent over one million deaths annually. The new technology is the result of a public-private partnership led by OneWorld Health and will be made available on a not-for-profit basis.
A new study using Africa's historical crop yield data reveals that corn production will decline by at least 20% for 1 degree Celsius of warming under drought conditions. The research also highlights the importance of combining existing knowledge and data from climate and agriculture communities to improve crop forecasting.
Scientists discovered a link between ancient human sites and tectonically active landscapes in southern Africa. The research suggests that early humans were attracted to habitats created by tectonic movements near rivers or lakes, which provided food, shelter, and drinking water.
A study published in PLoS Medicine found that intensive adherence counseling significantly reduces poor adherence and virologic treatment failure in patients with HIV. Patients receiving counseling were 29% less likely to experience poor adherence, and those receiving early counseling had a 59% lower risk of viral failure.
A randomized controlled trial found that intensive adherence counseling reduces poor adherence and virologic treatment failure by up to 59%. Counseling also had no significant effect on mortality or CD4 counts. The study suggests that adherence counseling should be implemented in HIV clinics caring for large numbers of patients.
The University of Illinois team produces animated educational videos on topics like insect control and water treatment to reach a larger audience at a fraction of the cost. The initiative uses cell phones as a platform to distribute the content, targeting viewers in both developing and developed countries.
A four-year USDA-funded grant will improve agricultural productivity and nutrition in Mozambique through a trilateral cooperation between the US, Brazil, and MSU. The initiative aims to create economic opportunities for low-income farmers by training them on technology and marketing fresh produce.
An international team of scientists has compiled paleoclimate records revealing an extreme megadrought in the Afro-Asian region 17,000 to 16,000 years ago. This drought, known as the H1 megadrought, had significant consequences for Paleolithic humans and raises questions about the potential severity of climate change.
New research suggests prevention of unwanted births may be a larger factor in fertility decline in developing countries. Contraception's success has played a significant role, especially in low-income countries, where meeting unmet demand could reduce population growth by 250 million by 2050.
Deep saline groundwaters in the Witwatersrand Basin show unique chemical signatures that differ from ocean and surface waters, suggesting isolation for a long time. The discovery adds to our understanding of a unique environment with microbial ecosystems that thrive on chemical energy from rock.
African fossil sites between six and five million years ago show signs of a distinct history of increasing isolation, which may have been caused by global climate change. The modern African sub-Saharan mammalian community is believed to be the vestige of a once-wider-ranging fauna.
A meta-analysis of 13 studies found that using cloth or paper to clean the vagina and intravaginal cleaning with soap increase the risk of HIV infection. The study also linked these practices to bacterial vaginosis and disrupted vaginal flora, which can lead to increased susceptibility to HIV.
A new conservation index helps policy-makers deal with the effects of climate change on birds in Africa, suggesting that international cooperation is essential to protect species. The study predicts that one-third of protected areas will undergo significant changes due to climate change.
The tobacco industry is expanding its sales in Africa, the Middle East, and Asia Pacific, with Imperial Tobacco and Phillip Morris reporting increases in cigarette sales. The Lancet Editorial criticizes the companies' 'selling, addicting, and killing' business model, describing it as 'morally repugnant'.
The LRC will test LED-based off-grid lighting products, evaluating performance and reliability criteria. The results will help manufacturers and buyers identify good quality products and prevent market spoiling.
New research predicts increased frequency of drought in eastern Africa, exacerbating existing food shortages and population growth. Scientists link warming Indian Ocean temperatures to decreased rainfall in the region.
The SUNRAY project aims to identify new ways to address malnutrition in Africa, prioritizing research led by African researchers. The initiative will integrate nutrition research with other sectors to address root causes and avoid 'technical fixes'.
A new study has found that modern humans may have reached the Arabian Peninsula as far back as 125,000 years ago. This discovery challenges current estimates of human migration out of Africa and sheds light on the technological innovations that allowed early humans to thrive in the region.
A new study reveals that a subspecies of grey wolf, previously thought to be a golden jackal, is actually a distinct species found in Africa. Genetic evidence confirms that the Egyptian jackal belongs to the grey wolf species complex.
In sub-Saharan Africa, an estimated 32 million pregnant women are at risk of malaria every year. Despite national policies to reduce and control malaria during pregnancy, coverage rates of two key interventions, insecticide-treated nets and intermittent preventive treatment, remain inadequate.
The study reveals that industrial and traditional fishing activities are putting the monk seal and Atlantic hump-backed dolphin at great danger due to over-exploitation of resources. The researchers call for stricter regulation and monitoring of fishing practices to protect these species.
A new nomogram developed by Matthias Egger and colleagues corrects mortality rate biases in HIV treatment programs, allowing for more accurate estimates of patients lost to follow-up. This method provides a valuable tool for programmatic mortality estimates, helping to keep the HIV treatment effort on track.
Researchers have found that seismic noise from storms in the South Atlantic Ocean and 'footquakes' from soccer matches can be detected by broadband seismometers. The discovery was made using cross-correlation analysis, which reveals a signal that varies with storm intensity.
Recent research reveals significant genetic differences between Asiatic and African cheetah populations, highlighting the need for targeted conservation efforts. The few remaining Asiatic cheetahs in Iran require urgent attention to prevent extinction.