Brain anatomy of Homo naledi
Homo naledi had a small endocranial volume, suggesting a small brain compared to other Homo species. The study found occipital lobe asymmetry and lunate sulcus morphology similar to that seen in modern humans.
Africa
Articles tagged with Africa
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Kenyan cave sheds new light on dawn of modern man
A 48,000-year-old Kenyan cave has yielded a treasure trove of ancient items, including crayons and shell beads, that offer new insights into the dawn of modern man. The site's continuous record of human habitation dates back 78,000 years, providing valuable evidence of early Homo sapiens behavior.
78,000-year cave record from East Africa shows early cultural innovations
A 78,000-year-old cave site in coastal Kenya reveals a sequence of human occupation and cultural complexity, with technological innovations starting at 67,000 years ago. The discovery challenges previous hypotheses about human migration out of Africa and provides new insights into the adaptability of early humans.
Nurse-led task shifting an effective strategy to control hypertension in Ghana, new study finds
A new study finds that nurse-led task shifting combined with health insurance coverage is an effective strategy to control hypertension in Ghana. The intervention led to a greater reduction in systolic blood pressure compared to health insurance coverage alone.
UTA researcher participates in Nature paper on early human survival
Researchers linked two sites in South Africa to the Toba volcanic eruption, demonstrating that ancestors thrived during the event. Microscopic glass shards found at these sites provide a precise temporal link between activities at one site and another.
Massive study across western equatorial Africa finds more gorillas and chimpanzees than expected
A decade-long study reveals a significant increase in western lowland gorilla and central chimpanzee populations, with an estimated 360,000 gorillas and 130,000 chimpanzees. However, the majority of great apes exist outside protected areas, highlighting the need for conservation efforts to safeguard their habitat
Climate change not the key driver of human conflict and displacement in East Africa
A new study by UCL found that socio-political factors are the primary cause of conflict and displacement in East Africa, with climate change playing a significant but secondary role. The research suggests that stable governance, economic growth, and reduced population growth can help reduce conflict and displacement.
New research findings suggest that most vulnerable patients across Africa are at risk of receiving sub-optimal malaria treatment
A large proportion of malaria patients in endemic countries are likely to receive low doses of malaria medicine, leading to poorer treatment outcomes and potentially fueling drug resistance. Vulnerable groups like malnourished children and pregnant women require different treatments due to their unique response to antimalarial drugs.
Humans have been driving a global reduction in mammal size for thousands of years
A new study by Felisa A. Smith et al. found a substantial bias in mammal extinction during human dispersal periods, with species that went extinct being two to three times bigger than surviving mammals. This trend is evident globally and reflects hominin-mammal interactions.
New research: High risk of malaria transmission after blood transfusions in sub-Saharan Africa
A new study finds nearly one in four blood bank supplies contain malaria parasites, putting children and pregnant women at risk. The lack of sensitive diagnostic technology exacerbates the issue, highlighting the need for better vigilance and screening practices to keep blood banks safe.
First human migration out of Africa more geographically widespread than previously thought
The discovery of a 90,000-year-old Homo sapiens fossil in Saudi Arabia reveals early dispersals into Eurasia were more expansive than previously thought. The finding suggests that early humans colonized a broader region of southwest Asia than previously believed.
Inner ear provides clues to human dispersal
Researchers analyzed inner ear structure in humans from diverse populations, finding variation within populations greater than between them. The shape of the labyrinth correlates with dispersal distance from Africa, providing insights into human migration history and population movements within continents.
Human inner ear morphology and dispersal from Africa
Researchers analyzed 221 skeletal specimens to examine the correlation between inner ear morphology and genetic markers reflecting human dispersal from Africa. The study found that labyrinth morphology corresponds with dispersal patterns, offering a new avenue for individual-based genotype and phenotype comparisons.
Study finds the emergency department can play a key role in identifying undiagnosed HIV cases in low
Researchers at Johns Hopkins found that 22% of patients tested positive for HIV, including 6% newly diagnosed, in a South African emergency department. The study suggests that emergency departments can play a key role in identifying undiagnosed HIV cases.
Emerging diseases | is MERS-CoV a threat for Africa?
Researchers from CIRAD and Hong Kong University find MERS-CoV strains in African dromedaries differ from those in the Arabian Peninsula, explaining virus transmission. Genetic differences may account for disease not being transmitted to humans in West and North Africa.
New model links yellow fever in Africa to climate, environment
Researchers developed a new model that quantifies yellow fever dynamics across Africa using seasonal climatic measures, confirming the risk varies throughout the year. The model accurately captured geographic and temporal heterogeneities in transmission and offers insights for early interventions.
Scientists discover genomic ancestry of Stone Age North Africans from Morocco
Scientists discovered genomic ancestry of Stone Age North Africans from Morocco, revealing a mix of Near Eastern and sub-Saharan African influences. The study, published in Science, sheds new light on human migration patterns and the history of our species.
Studying DNA of ancient humans from Morocco reveals ancestral surprises
Researchers studied 15,000-year-old human DNA from Morocco's Iberomaurusian culture, finding no European ancestry. Instead, they identified genetic ties to ancient Near Easterners and sub-Saharan Africans, suggesting a pre-agricultural connection between the regions.
Saving lives
A team of climatologists at UC Santa Barbara's Climate Hazards Group has developed skillful predictions for droughts and famines, helping to mitigate their effects on severe food insecurity. Their work, in collaboration with various organizations, aims to make the world more food secure by anticipating climate extremes.
Humans flourished through super volcano 74,000 years ago, study finds
Researchers found that humans in South Africa flourished during the volcanic winter caused by the Toba super volcano eruption. The study, published in Nature, used cryptotephra analysis to narrow down the time of the event and its impact on human ancestors.
Big game hunters in Africa urged to drop the lead to help save vultures
Research in Botswana finds high levels of lead in African vultures, linked to hunting activity, with conservation efforts urging a national ban on lead bullets and awareness among policymakers.
New research solves the 60-year-old paleontological mystery of a 'phantom' dicynodont
A new study validates 'phantom' fossil footprints collected in the 1950s showing dicynodonts coexisting with dinosaurs. The discovery sheds light on ancient ecosystems and highlights the importance of trace fossils like footprints.
Elephant declines imperil Africa's forests
A Duke University study found that reduced forest elephant populations will lead to significant changes in tree species composition and structure, as well as understory density and nutrient availability. Without intervention, up to 96% of Central Africa's forests may undergo major transformations.
Humans thrived in South Africa through the Toba super-volcanic eruption ~74,000 years ago
Scientists discovered that early modern humans on the coast of South Africa continued to thrive despite a massive volcanic eruption around 74,000 years ago. The team found evidence of a 'refugia' area with abundant resources like shellfish, allowing human groups to survive the devastating event.
Modern humans flourished through ancient supervolcano eruption 74,000 years ago
Scientists have discovered evidence that early modern humans on the coast of South Africa thrived through a 74,000-year-old ancient supervolcano eruption. The team found cryptotephra shards with a distinct chemical signature linking them to Mount Toba, confirming human occupation during the event.
Food abundance driving conflict in Africa, not food scarcity
A study published in the American Journal of Agricultural Economics refutes the idea that climate change leads to civil war in Africa due to food scarcity. Instead, conflicts are driven by competition over abundant food resources, with most armed groups unable to sustain themselves and instead seeking control over local food supplies.
Focusing on cholera hotspots could cut Africa's cholera burden in half
New studies suggest that concentrating control measures in high-incidence districts and areas surrounding cholera victims' homes can significantly reduce the disease's impact. By targeting these hotspots, Africa could cut its cholera burden by 50 percent.
New data helps explain recent fluctuations in Earth's magnetic field
Researchers gathered ancient clay samples to compile a record of Earth's magnetic field strength over many centuries, revealing the South Atlantic Anomaly is part of a recurring phenomenon. The data suggests that the region under southern Africa may be responsible for recent changes in the global magnetic field.
Precision maps reveal significant health and education disparities within African nations
Two studies mapping Africa's entire continent in 5x5 square kilometers reveal significant inequities in health and education. Despite improvements in some areas, stunting, wasting, and underweight persist in many countries, with a focus on rural-urban and male-female disparities.
Identifying high STI prevalence populations in sub-Saharan Africa
Two studies found that curable STI prevalence exceeds older women and similar-aged men in sub-Saharan Africa, particularly among young women. High rates of chlamydia, gonorrhea, syphilis, and trichomoniasis were also detected in young men.
Wood fuels key to easing food insecurity situation in sub-Saharan Africa
The study highlights the importance of considering access to wood fuels when formulating policies to deal with food insecurity in sub-Saharan Africa. Researchers suggest expanding sustainable biomass production and consumption, including agroforestry practices to ease the burden on women, who collect most firewood.
Humans changed the ecosystems of Central Africa more than 2,600 years ago
A team of scientists discovered that humans triggered the transformation of dense forests to savannahs in Central Africa around 2,600 years ago. The sudden change, known as the 'rainforest crisis,' was not caused by climate change but rather by human activities such as agriculture and population growth.
Continental interiors may not be as tectonically stable as geologists think
Researchers identified unexpected geophysical signals beneath stable continental interiors of South America and Africa, suggesting recent geologic activity. Cratons, ancient rocks on Earth's surface, may have experienced delamination, a process where the denser lower mantle layer peels away from the buoyant upper layer.
Recovering population of Zimbabwean African lions show low genetic diversity
A study published in PLOS ONE found that Zimbabwe's Savé Valley lion population has low genetic diversity due to inbreeding, which could impact its health. The authors suggest introducing new unrelated lions to enhance the population's genetic diversity and ensure its long-term future.
No volcanic winter in East Africa from ancient Toba eruption
New research from the University of Arizona contradicts the Toba catastrophe hypothesis by showing no significant negative impact on vegetation growing in East Africa after the 74,000-year-old volcanic eruption. The study found some die-off of mountain plants just after the eruption, but no massive die-off of vegetation at all elevations.
Classification of tropical forests
Researchers used phylogenetic analysis to classify tropical forests into two major regions: an American-African combined region and an Indo-Pacific region. The study also identified a dry region encompassing areas in America, Africa, India, and Madagascar, as well as a subtropical region with parts of America and Asia.
Children with disabilities in West Africa experience violence from the day they are born
A study published by NYU Steinhardt School finds that all children with disabilities experience violence from birth in West Africa. Violence begins as soon as children are born, and varies depending on the type of impairment.
MSU ecologist awarded Swedish professorship to further study of Africa's carnivores
A Montana State University ecologist has received a prestigious Swedish professorship to further his research on predator-prey relationships and conservation of Africa's top carnivores. The award allows him to collaborate with experts in molecular ecology and explore how human activities isolate ecosystems.
Parenting program brings 'joy' to Africa's poorest communities
A widely used parental guidance program has been shown to reduce domestic conflict and boost economic resilience in South Africa's poorest communities. The Sinovuyo Caring Families Programme for Parents and Teens transformed family relationships in severely at risk communities, improving teenagers' safety and family relationships.
New Egyptian dinosaur reveals ancient link between Africa and Europe
The discovery of Mansourasaurus shahinae, a long-necked plant-eater with bony plates, fills gaps in Africa's Late Cretaceous fossil record. The species helps answer questions about Africa's connections to Europe and the degree to which its animals evolved independently.
African heads of state endorse new measurement of progress on neglected tropical diseases
The African Leaders Malaria Alliance added neglected tropical diseases to its annual scorecard, revealing progress and gaps across five diseases that affect countries' poorest communities. Most data points to progress, but areas of concern include nearly two-thirds of countries having a NTD coverage index of less than 50%.
Scientists discover oldest known modern human fossil outside of Africa
The discovery of the Misliya fossil suggests that Homo sapiens left Africa at least 50,000 years earlier than previously thought. The fossil, found in Israel, is between 175,000-200,000 years old and provides evidence of modern humans meeting and interacting with other archaic human groups.
Remains of earliest modern human outside of Africa unearthed in Israel
A jawbone dating to 177,000-194,000 years ago has revealed that modern humans were present in the Levant at least 50,000 years earlier than previously thought. The discovery suggests an earlier demographic replacement or genetic admixture with local populations.
Oldest human fossil outside of Africa discovered, with tools nearby
A 177,000-194,000-year-old fossil found in Israel shifts the estimated departure time of humans from Africa by 40,000-50,000 years. The discovery includes sophisticated stone tools with Levallois technique features, linking technology emergence to Homo sapiens appearance
Researchers borrow from AIDS playbook to tackle rheumatic heart disease
Researchers adapt HIV/AIDS treatment-cascade model to combat rheumatic heart disease in sub-Saharan Africa, finding that patients facing distance barriers have lower continuation rates. The study shows that decentralizing care and providing more staff, funding, and resources per capita at regional sites can increase patient retention.
Human smugglers operate as 'independent traders,' study finds
Research reveals human smugglers operate in a highly segmented market, with each stage a competitive marketplace for 'independent and autonomous' smugglers. Successful smugglers rely on reputation among migrants to maintain their business, and removing one smuggler can lead to rivals seizing their market share.
Bovine tuberculosis shows genetic diversity throughout Africa
Researchers have genotyped M. bovis samples from cattle in Mozambique, revealing a deeply geographically structured diversity of the disease. The results suggest that the diversity of M. bovis is maintained within regions through constant reinfection of animals.
Print a 200-million-year-old dinosaur fossil in your own home
Researchers have made it possible to 3-D print and study a 200-million-year-old South African dinosaur skull, the Massospondylus. The digital reconstruction was created using CT scans, allowing for detailed analysis of its inner ear and brain structure.
The ecological costs of war: Conflict a consistent killer of African megafauna
A recent study found that conflict in Africa's protected areas has led to a consistent decline in large mammal populations. Despite severe impacts, these populations rarely collapse and can recover with the right policies and resources. The research suggests that avoiding even low-level conflicts is crucial for conservation efforts.
Family physicians in South Africa strengthen district hospital care
District hospitals with family physicians in South Africa exhibit better availability of essential services and improved child and neonatal health. In contrast, community health centers with family physicians have lower scores for health system performance and continuity of care.
DNA evidence is putting rhino poachers behind bars, study shows
A new DNA-based system is successfully linking seized rhino horns to specific crime scenes where rhinoceros carcasses were left behind. The Rhino DNA Index System (RhODIS) has been used in over 5,800 forensic cases and has led to convictions in more than 120 cases.
Common birth control shot linked to risk of HIV infection
A comprehensive review of available evidence suggests that replacing the DMPA contraceptive shot with alternative methods could help protect women from becoming infected with HIV. The study found that some other forms of contraception do not show the same deleterious effect on immune function as DMPA.
Nok research project enters final phase
The Goethe University Frankfurt's Nok research project has been awarded €1.5 million in funding to continue its 12-year study of the 2,500-year-old Nigerian Nok Culture. The project has uncovered significant insights into chronology, settlement, land use, and environment.
Study investigates impact of lions living alongside giraffe populations
A study published in PLOS One found that lions in the same conservation area as giraffes reduces calf populations by up to 82 percent. This has significant implications for giraffe population sustainability and conservation efforts. Giraffe populations have declined by 40 percent over the last 30 years.
The Lancet: Surgery death rates in Africa are double the global average
Despite being younger with fewer complications, African surgery patients face a higher risk of death compared to the global average. The study calls for improved monitoring of patients during and after surgery to improve outcomes.
Study examines conflict between farmers and livestock predators
A new study found that black-backed jackals have a preference for eating livestock, including sheep and goats, over similarly sized wild prey. This has significant consequences for farmers and the management of predators in South Africa, highlighting the need to protect livestock from these animals.
The incredible journey of the first African tortoise that arrived in Europe
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.
Southern Africa's cheetah population much smaller than believed
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.
Scientists urge endangered listing for cheetahs
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.
African deforestation not as great as feared
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.