Articles tagged with Africa
A 95-million-year-old African tortoise migrated to Europe via the ancient supercontinent of Laurasia. Its remains, including a skull and carapaces, were found in Spain and Portugal.
A new study found that fewer than 3,600 adult cheetahs remain in southern Africa, with most cats living within just two habitats. Conservation efforts are needed to protect the species, particularly those who live on or travel through livestock farms.
A comprehensive study published in PeerJ reveals the cheetah's precarious situation in southern Africa, with only 3,577 adult cheetahs estimated to exist. The research identifies two habitats that support a majority of individuals and highlights the need for conservation efforts to protect these majestic predators.
Researchers at Yale University have reestimated African deforestation, finding a 21.7% loss of closed-canopy forests since 1900. The study highlights the importance of focusing conservation efforts in areas with actual deforestation rather than incorrectly labelled savannas.
A comprehensive study found that inflammatory bowel disease has become a global disease with accelerating incidence in newly industrialized countries. The research highlights the need for prevention and preparedness measures as these countries struggle to manage this complex and costly disease.
Recent studies reveal that humans left Africa multiple times prior to 60,000 years ago, interbred with other hominins in Eurasia, and left genetic traces in modern human populations. The analysis confirms the traditional 'Out of Africa' model can no longer be seen as the full story.
Large populations of deadly Cryptococcus fungi have been found in two public areas in Cape Town and the Northern Cape, threatening HIV/AIDS patients. The research aims to understand the ecology of these pathogens to curb their spread.
The study found that the number of women using modern methods increased by 28.8 million between 2012 and 2017, but progress varies widely across countries. Countries like Kenya, Mozambique, and Malawi made rapid strides in increasing modern contraceptive use, exceeding pre-FP2020 expectations.
A novel drug delivery system using a microarray patch has been developed for HIV pre-exposure prophylaxis (PrEP), which could increase adherence among at-risk women and others. The patch contains tiny projections that painlessly deliver a drug, providing weeks or months of protection against infection.
Niassa National Reserve in Mozambique has lost 108 square kilometers of forest due to agriculture and human settlement since 2001.
Researchers identify barriers to applying international guidelines, citing unique challenges such as younger age at presentation and lack of national breast screening programmes. The need for specific regional guidelines was agreed upon by 90.6% of survey responders.
Researchers studied African populations, finding a high degree of variability in skin pigmentation that cannot be explained by just a few genes. The study suggests that multiple genes contribute to the process, with variations increasing near the equator.
African populations show a higher degree of genetic complexity in skin pigmentation as latitude decreases, with an increasing number of unknown genes contributing to variation. The study found that stabilizing selection takes over at lower latitudes, leading to more diverse skin colors.
The NIH has launched a Phase 2b proof-of-concept study called Imbokodo to assess the safety and efficacy of an experimental HIV vaccine regimen. The study aims to enroll 2,600 HIV-negative women in sub-Saharan Africa and will test the quadrivalent mosaic vaccine against placebo.
The largest genetic study of mosquitoes reveals that insecticide resistance is spreading rapidly across Africa, posing a significant threat to malaria control. The study found that wild mosquitoes are genetically diverse and can evolve resistance quickly, making it challenging to control the disease.
Business schools in Africa must develop students' pragmatic political skills to counter bribery and corruption. The onus is on African business schools to empower future business leaders to strengthen State institutions and eradicate corruption.
A new study suggests that understanding rainfall patterns is key to effectively addressing food insecurity among smallholder farms in Africa and Asia. Financial supports, such as cash or loans, were more frequently correlated with improved food security for drier farms, while agricultural inputs and practices were more effective for we...
A simple colour-changing test developed by researchers at the University of Bath can detect high levels of fluoride in drinking water, which can cause crippling skeletal fluorosis. The test aims to be low cost, rapid, and robust, allowing anyone to perform a test without scientific training.
Researchers linked major cholera outbreaks to Asian origin, highlighting need for targeted control strategies. Genomic analysis identified antibiotic-resistant strains originating from South Asia.
Research presented at the 18th Annual Congress of the South African Heart Association found significant financial stress associated with a 13-fold higher odds of having a heart attack. The study included 106 patients with acute myocardial infarction and found both work stress and financial stress to be risk factors.
Researchers analyzed genomic data to identify the source of the seventh cholera pandemic, linking it to human-related transmission factors. The study found that the pandemic strain was introduced into Africa at least 11 times since 1970, replacing drug-susceptible populations with multidrug-resistant bacterial sublineages.
Researchers developed a new 'rule-book' to estimate the risk of different cholera strains causing epidemics. The study found that 7PET strains from Asia repeatedly introduced into two main regions of Africa: West Africa and East/Southern Africa, leading to massive epidemics in some cases.
A new study by Johns Hopkins University reveals that climate change will disproportionately affect people living in crowded urban settlements in Africa. The study found that temperatures in these areas can be up to 10 degrees Fahrenheit higher than the official weather station, leading to a significant increase in heat-related deaths.
The NEWgenerator generates nutrients, energy and water from wastewater, providing a sustainable solution for urban settlements. The system can generate up to 1,000 users' worth of clean water, energy and fertilizer, reducing strain on sewer systems.
A new study reveals that Madagascar's fruit is too low in protein for lemurs to sustain themselves, prompting them to adopt a leafy diet and develop unusual behaviors like hibernation. The research sheds light on the evolution of lemurs' dietary habits and highlights their unique characteristics.
Scientists have engineered cowpea to produce a Bacillus thuringiensis protein that protects against the Maruca pod borer. The resulting Bt cowpea variety can yield up to 25% more than traditional varieties, making it an attractive option for smallholder farmers in Africa.
A new species of mega-carnivore has been discovered in southern Africa with footprints measuring 57cm long and 50cm wide. The estimated body length of the dinosaur is around nine meters, four times that of a lion, making it one of the largest carnivores to roam the continent.
African teams join forces with UK experts to develop novel treatments for malaria and sleeping sickness, as part of the £7 million Tackling Infections to Benefit Africa (Tiba) project. The initiative aims to strengthen health systems across the continent.
The University of Freiburg is launching a new centre to promote African knowledge production and sustainable governance. The MICAS Africa centre will bring together top researchers from Africa and the world to address global imbalances in knowledge.
A team of scientists developed an innovative way to prevent sleeping sickness in cattle using the smell of antelopes. By mimicking the waterbuck's repellent scent, more than 80 percent of cows were spared from infection. The method is cheaper and more popular among Maasai herders than traditional treatments.
A year-long trial suggests that hydroxyurea treatment is safe and effective for Ugandan children with sickle cell anemia, contrary to concerns about increased malaria risk. The study found no correlation between hydroxyurea treatment and the rate or severity of malaria infection.
Researchers have found that climatic changes related to the Permian-Triassic extinction event occurred 1 million years earlier than previously thought. The discovery was made in the Karoo Basin in South Africa, where fossils revealed a 'faunal turnover' indicating early signs of the extinction event.
A new study assesses pandemic potential in Africa prior to outbreaks, mapping vulnerabilities to mitigate the spread of Ebola and other deadly viruses. Researchers identify high-risk locations, including parts of Central African Republic, Chad, Somalia, and South Sudan, highlighting the need for targeted preparedness activities.
A team of scientists explored links between climate effects and two health outcome indicators: malnutrition and low birth weights. Their models indicate that vulnerable areas may see more malnourished children and lower birth weights due to warming and drying, but positive development trends can mitigate these effects.
Researchers found that climate in northeast Africa shifted from wet to very dry around 70,000 years ago, coinciding with human migration out of Africa. The team's analysis of sediment cores revealed a significant drop in sea surface temperature and rainfall patterns, making the environment less hospitable for human habitation.
A new study published in PLOS ONE found that a significant proportion of South Africans with diabetes do not receive adequate care, with nearly twice the proportion of cases being undiagnosed. The research highlights gaps in screening, diagnosis, treatment, and control of the disease, particularly among adults aged 40-plus.
A genomic analysis of ancient human remains from KwaZulu-Natal reveals that southern Africa played a significant role in the history of humankind. The study estimates the divergence among modern humans to have occurred between 350,000 and 260,000 years ago.
A new study has pushed back the emergence of modern humans by an estimated 50,000 years to between 350,000 and 260,000 years ago. The findings were made possible by a collaboration between geneticists and archaeologists who reconstructed the full genome of a 2,000-year-old boy found in South Africa.
A team of researchers is using genomic breeding approaches to develop disease-resistant, nutrient-rich banana varieties for smallholder farmers in East Africa. The goal is to boost yields by 30% and create high-yielding hybrids by 2019.
Archaeologists discovered ancient Egyptian-like plant impressions indicating that prehistoric peoples in the Butana Group were cultivating wild sorghum until it was genetically altered into a domesticated form. This finding pushes back the process for domesticating summer rainfall cereals by over a thousand years.
A new study estimates that nearly half of all abortions worldwide are unsafe, with the majority occurring in low-income countries. The study highlights the need for safe access to abortion and replacing unsafe methods with safe ones.
Dr Anja Osei's project aims to evaluate parliamentary debates and surveys among Members of Parliament in seven African countries to understand the role of parliaments in autocracies. The research will explore whether legislatures enhance democracy or contribute to authoritarian rule.
A study published in the Journal of Environmental Economics and Management found a systematic link between droughts and riots in sub-Saharan Africa. Droughts increase the possibility of rioting by 10% in a given month, with population density playing a key role in this relationship.
A breakthrough in sequencing the white Guinea yam genome has opened up possibilities for improving the staple crop's yields, sustainability, and disease resistance. This achievement will help farmers increase productivity and transform yams from a neglected 'orphan' crop to a more domesticated and economically viable food source.
The University of Portsmouth's AIR Network aims to address the significant contributor to respiratory and cardiovascular disease in low-resource settings. By engaging with local communities through arts, theatre, and other methods, researchers will explore co-creating viable interventions to reduce exposure to air pollution.
Researchers reconstructed African population structure using ancient DNA from 15 individuals, revealing a more complex history than previously thought. The findings show that populations related to indigenous people of southern Africa had a wider distribution in the past, contributing to ancestry of modern-day populations.
A large-scale study of ancient human DNA from sub-Saharan Africa has shed light on the identity of prehistoric populations, their movements and genetic adaptations. The research found evidence of a population replacement in Malawi and identified a mysterious group that spanned from southern Africa to the equator.
Tropical Depression 14E has formed in the Eastern Atlantic Ocean, moving towards the west-northwest at 10 mph. The depression has maximum sustained winds of near 35 mph and is forecasted to become a tropical storm Lee by later today.
Researchers found that South Africa's oil-collecting Rediviva bee species have evolved long front legs to reach oil in snapdragons' twin spurs. The length of these spurs varies among species, and bees coat their legs with velvety hairs to soak up the oil.
A new report from The Lancet Commission highlights opportunities to improve health in Sub-Saharan Africa by seizing the workforce's growth and transforming health systems. The report emphasizes the need for prevention, public health, and primary care, as well as addressing emerging challenges like non-communicable diseases.
The Joint West Africa Research Group (JWARG) has begun a study to identify cases of suspected severe infectious diseases in West Africa. The study will enroll adult volunteers who present as severely ill with a suspected infectious source, and collect samples for laboratory analysis.
A study by the UPV/EHU-University of the Basque Country found that Pentecostal churches serve as places of reference for migrants to establish relationships, build trust, and share values. Pastors act as cultural mediators, providing essential information on welfare benefits, language skills, and navigating local provinces.
Researchers found that antivenoms produced using snakes from one region may perform poorly or fail completely against the same species of snakes from other regions. The study highlights a significant public health concern, with snakebites affecting millions globally and accounting for thousands of deaths annually.
A scoping review of palliative care development in Africa found that only a small subset of countries have made progress, with the majority concentrated in East Africa. The review highlights the need for increased access to opioids and postgraduate educational opportunities to address structural inequities in care delivery.
Researchers at OIST Graduate University have created 3D avatars of three new ant species named after key figures in African biodiversity conservation. The ants' virtual reconstructions allow for detailed study of their biology without damaging physical specimens.
A new rapid diagnostic test has been shown to effectively distinguish between severe and uncomplicated malaria in children in Sub-Saharan Africa. The test was tested on 2,678 children with fever, resulting in a sensitivity and specificity of 97.6% for detecting severe malaria.
The aCar is an electric off-road capable vehicle designed to strengthen rural structures and drive the economy in Africa. Its modular structure allows for various applications, including water treatment, medical care, and cargo transportation.
Researchers used ancient DNA and proteins to confirm chicken introductions in Zanzibar (7th-8th century AD) via maritime trade. Black rats also appear in islands around the same time, suggesting they arrived as stowaways on trade vessels.
Researchers have discovered that mature Reed Warblers can detect the declination from magnetic north and use it to locate themselves longitudinally, orienting towards their migratory route. This system is believed to be learned by experience, as juvenile birds were unable to adapt to a new magnetic signal.
The Sungazer lizard is critically endangered due to poaching and habitat loss, with its population declining by over a third in the last decade. A conservation assessment found that only half of the species' habitat has been irreversibly transformed by humans.