Articles tagged with Africa
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Researchers have discovered the oldest evidence of pressure flaking in South Africa's Blombos Cave, pushing the origins of a skillful stone-tool-sharpening method back more than 50,000 years. The technique, used by anatomically modern humans, allows for precise control over tool shape and sharpness.
A new discovery in Libya's Dur At-Talah escarpment suggests that anthropoids colonized Africa from Asia, rather than evolving there. The site yields three distinct families of anthropoid primates that lived in North Africa around 39 million years ago.
Despite extensive research, fossil pollen from Central and West Africa provides no definitive evidence for communities of rainforest trees at the beginning of the Cenozoic. Paleobotanist Bonnie F. Jacobs and her colleagues have mapped out the limited fossil record, which consists of only 82 sites, most dating back to 50 million years ago.
The African Successes project identifies and analyzes African successes, focusing on economic and political improvements, transparency, and freedom of press. Researchers are studying successful initiatives such as an anti-malaria campaign in Zambia and a cellphone-based money transfer system in Kenya.
The study predicts that severe and prolonged droughts will affect much of the globe in the next 30 years, with dry conditions increasing substantially across Eurasia, Africa, Australia, and parts of North America. By the end of the century, densely populated regions may face extreme drought conditions.
The Water Efficient Maize for Africa (WEMA) varieties, developed through a public-private partnership, show promising results with preliminary evidence of 24-35 percent higher yields. The project aims to test transgenic maize in confined field trials to evaluate their potential in drought conditions.
The University of Illinois College of ACES will strengthen rural farmers' livelihoods by modernizing agricultural Extension systems in 20 poorest developing countries. The five-year project aims to transform these systems to increase farm incomes and improve rural poverty, using sustainable natural resource management practices.
Research found a decline in global evapotranspiration, a key component of the global climate system, over the past decade, mainly in the Southern Hemisphere. The shift coincided with reduced precipitation and increased drought stress on vegetation.
Global malaria funding has increased by 166% since 2007 but falls 60% short of the required $4.9 billion for comprehensive control in 2010. Meanwhile, 21 countries, including 12 in Africa, have received adequate or near-adequate funds to implement effective malaria interventions.
Researchers are exploring the cowpea's high protein content, drought resistance, and ability to infuse soils with nitrogen, making it a promising crop for Africa's food security. The conference highlights innovative approaches to breeding resilient varieties and using biotechnology to combat pests and diseases.
The ICIAM Collatz Prize recognizes individual scientists under 42 worldwide for outstanding research in industrial and applied mathematics, while the Lagrange Prize honors career-long contributions. Other notable prizes include the Maxwell, Pioneer, and Su Buchin Prizes.
Scientists have discovered that Simian Immunodeficiency Virus (SIV), an ancestor of HIV, is thousands of years old, challenging previous estimates. The research suggests SIV may be even older than a million years and has implications for understanding the origin of HIV.
A new model by UCLA researchers suggests the WHO's test-and-treat strategy for HIV in South Africa may not be feasible due to substantial cost underestimation. The study found that annual testing, prevention programs, and healthcare infrastructure scaling up were not accounted for in the original proposal.
The latest global under-5 mortality rates show significant declines in many regions, with reductions of at least 50% in most areas except sub-Saharan Africa, southern Asia, and Oceania. However, the planet is not on track to meet MDG4's goal of reducing child mortality by two-thirds between 1990 and 2015.
Scientists at the University of Toronto have discovered chemicals and genes that may break Striga's stranglehold on crops in sub-Saharan Africa. By manipulating strigolactone production, they aim to reduce the parasite's ability to kill crops.
A new Special Paper documents the latest research on granite origins, covering historical context, current evolution, and global perspectives. Key findings highlight the diversity of granite-related research and its ongoing thrust.
Researchers found that villagers with higher cognitive and decision-making abilities were more likely to take protective steps against HIV. Formal education was key to teaching people how to think critically and make informed decisions.
Researchers estimate ITN coverage in 44 African countries between 2000 and 2008, with some countries scaling up coverage to over 60%. However, others, such as Nigeria, remain undercovered. The study suggests increased development assistance for health is related to improved ITN coverage.
The new atlas identifies areas with urgent need for mass treatment and predicts infection risk in data-lacking areas. The Global Atlas of Helminth Infections aims to improve sanitation and health education to control worm infections.
Research in Guinea reveals why chimpanzees attack humans, highlighting the importance of habitat conservation to prevent resource-based attacks. The team studied eleven attacks, finding that they occurred during periods of crop-raiding and food scarcity.
A modeling study found that high malaria transmission areas in Africa require additional tools beyond current interventions like artemisinin-combination therapy and bednets. Targeting outdoor-biting mosquitoes with new strategies may be necessary for achieving elimination in these areas.
Researchers have successfully transferred green pepper genes into African bananas, giving them resistance to the deadly Banana Xanthomonas Wilt disease. The banana varieties exhibit strong resistance to the disease and could potentially save millions of farmers' livelihoods.
Trials in Asia and Africa have demonstrated the rotavirus vaccine's ability to prevent severe gastroenteritis and save thousands of lives. The vaccine has shown promise in reducing disease incidence, especially among infants.
Scientists report the discovery of a unique Cretaceous creature with mammal-like teeth, challenging traditional views of ancient animal life. The new species, Pakasuchus, was found in Tanzania and is believed to have been a land-dwelling, insect-eating creature that thrived during the middle Cretaceous period.
The AWARD Fellowship program recognizes and supports top African female scientists conducting critical food security research. Since its inception in 2008, the fellowships have empowered over 1,600 women scientists to strengthen their research and leadership skills.
A new report by FARA and Imperial College London reveals that crops can be produced for bioenergy on a significant scale in west, eastern, and southern Africa without harming food production or natural habitats. The study suggests that policies are needed to address potential conflicts, but views bioenergy as crucial to unlocking Afric...
Rapid losses of African native livestock threaten the continent's food supply as investments are needed to preserve unique traits and prevent extinction. Experts urge urgent action to stop the loss of genetic diversity, particularly in West Africa, where drought- and disease-resistant animals are under siege.
The large-scale roll-out of adult male circumcision (AMC) in Orange Farm, South Africa has been successful in reducing HIV prevalence. The study's findings suggest that AMC can be a feasible short-term strategy for HIV prevention in low-income communities with high HIV prevalence.
A new species of small fish, the bearded goby, has been found to eat jellyfish and thrive in an oxygen-depleted zone off the coast of southwest Africa. This unexpected predator-prey relationship puts jellyfish back into the food cycle.
Researchers developed two new risk models to predict the survival of HIV patients in sub-Saharan Africa. The models identified key factors such as CD4 cell count, clinical stage, and bodyweight that increase the risk of death. These predictions will aid in clinical decision making and improve treatment outcomes.
Large mammal populations in African national parks have declined by up to 59% since 1970, with some species experiencing dramatic decreases. Despite this, improved management and conservation efforts in southern Africa offer a glimmer of hope for the long-term survival of these iconic species.
Tulane University will establish an International Center of Excellence in Malaria Research for West and Central Africa, aiming to achieve malaria control in the region. The seven-year project will involve 48 investigators from 10 institutions, including four African partners.
Researchers found that small-scale corruption in the South African police force is commonplace and often condoned by those involved. Police officers frequently accept gifts from residents, which should not be seen as bribes but rather as a social gesture to build relationships.
Strong health research systems are needed to address bottlenecks in implementing effective interventions for maternal, newborn, and child health in sub-Saharan Africa. Investing in African scientists, institutions, and systems is crucial to deliver solutions tailored to local problems.
A new Policy paper argues that the estimated $30 billion needed to improve maternal, neonatal and child health is insufficient due to overlooked service delivery costs. Donors need a more realistic understanding of the funding required to achieve MDG targets for child and maternal health.
African children suffer from an estimated 656 million fevers annually, with many cases likely due to non-malarial causes. A new study estimates that only 60-103 million of these fevers are caused by the most dangerous form of malaria.
The study found that stroke incidence rates in urban Tanzania were almost three times higher than in rural areas, with crude yearly rates of 94.5 per 100,000 in rural Hai and 107.9 per 100,000 in urban Dar-es-Salaam. The authors suggest that undiagnosed or inadequately treated hypertension is a major modifiable risk factor for stroke i...
Key findings from a PLOS Medicine series highlight the need to bridge the gap between scientific knowledge and policy-making in Africa. The authors emphasize developing innovative approaches and investing in local adaptation of global MNCH evidence to address regional constraints.
Diabetes prevalence is set to double by 2030 in sub-Saharan Africa due to rapid urbanization and lifestyle changes. Implementing national diabetes prevention programs involving multiple sectors is crucial to address this public health issue.
The Human Heredity and Health in Africa project will utilize genetic, clinical, and epidemiologic screening tools to identify hereditary and non-hereditary components of risk. The effort aims to build research capacity on the continent and create strong collaborations between African researchers and those globally.
Two new articles analyze the current status of maternal, newborn, and child health in Africa, identifying interventions that hold the greatest potential for preventing maternal and child deaths. The studies conclude that prioritizing high-impact outreach interventions could save millions of lives and cost an estimated $1.21 per capita.
A recent study published in Current Biology reveals that malaria is tens of thousands of years older than previously thought, evolving alongside anatomically modern humans. The research found a clear correlation between the geographic spread of malaria and human migration patterns, suggesting a shared origin and route of spread.
A diet rich in aquatic foods may have driven brain development in early humans. The discovery provides evidence that consistent amounts of fish were part of the human diet, around two million years ago.
A randomized trial found that trained nurses can safely and effectively manage antiretroviral treatment, similar to doctor-monitored care. The study adds evidence to the success of 'task-shifting' in HIV care, which could help ease healthcare worker shortages and expand access to ART for millions in need.
A longitudinal study found that women in relationships with low equality had a higher incidence of HIV compared to those with medium or high relationship power, highlighting the importance of addressing gender-based abuse and inequity in preventing HIV infection.
Researchers will monitor infectious disease threats from countries participating in the tournament and cities with high air travel to South Africa. They aim to predict potential outbreaks of diseases like mumps, Hand, Foot and Mouth Disease, Rift Valley Fever, and more.
Despite achieving parity by 2015 in only 18 countries, the MDG 3 target for eliminating gender disparity in primary and secondary education remains unmet. The Editorial emphasizes that political discussions around MDGs 4, 5, and 6 have excluded gender equity.
Researchers at University of California - Berkeley have identified four distinct species of the secretive Hemidactylus fasciatus gecko in West African rain forests. The discovery was made using new DNA analysis techniques that distinguish different species even when they appear similar.
A Durham University researcher has developed a new notation system for African drums, allowing people to learn and perform unique rhythms worldwide. The system is used in a song called 'Vuma! Unity, harmony, goal!' promoting rhythm and unity for World Cup success.
A study combining genetic, archaeological, and linguistic data reveals that genetic variation in Africa is structured geographically and linguistically. The research provides a clearer picture of the continent's history and highlights the importance of independent lines of evidence in interpreting genetic and genomic data.
A new assessment tool, the Malawi Developmental Assessment Tool (MDAT), has been developed and evaluated for use in rural African settings. The tool accurately identified children with neurodisability and demonstrates high reliability and accuracy, making it a valuable resource for researchers and healthcare providers.
Researchers used tree-ring data to reconstruct northwest Africa's climate history, finding frequent and severe droughts during the 13th-16th centuries and late 20th century. The region's 20th-century drying trend matches climate models' predictions, while regional drought patterns differ across Morocco, Algeria, and Tunisia.
The study reveals that global child under-5 deaths have declined by 60% since 1970, with neonatal mortality dropping by 57%. Many poorer countries are making accelerated progress, while high-income countries like the UK and US are lagging behind. Only 31 developing countries are on track to meet MDG4.
The Lancet series highlights the need to assess interventions for social and economic determinants of TB, including malnutrition, alcohol use, and poor housing. Community engagement is crucial to overcome this community disease, and a progressive model is needed to harness community participation.
The global burden of tuberculosis remains significant, with 11 million active cases in 2008, despite progress made since the start of DOTS era. Rapid expansion of TB diagnosis and treatment has saved up to six million lives, but further efforts are needed to eliminate the disease by 2050.
The lake's surface waters have warmed by 3 degrees F since 1900, driving a decline in productivity and impacting the fishery. The research provides a detailed record of temperature and its impacts on a tropical African ecosystem.
The need for longitudinal cohorts in sub-Saharan Africa is highlighted due to the growing burden of non-communicable diseases. These studies can investigate multiple complex diseases and risk factors over an individual's lifetime.
A study found that south-south collaborations between biotech firms in developing countries are increasing, enabling the production of affordable health products. These collaborations have already led to successful vaccine development and distribution, such as the Brazil-Cuba collaboration during Africa's meningitis outbreak.
Researchers have sequenced the complete Neanderthal genome, discovering that up to 2% of present-day human DNA originated from Neanderthals. The study reveals genetic differences between humans and Neanderthals, including variations in genes related to cognitive development and skin morphology.
Dr. Mandalakas will analyze social and economic barriers to implementing Isoniazid preventative therapy in children with latent tuberculosis infection in South Africa. She aims to promote the practical implementation of preventive therapy to improve child health outcomes.