Articles tagged with Africa
Anthropologists at the University of Oregon have discovered evidence of shea tree harvesting dating back to A.D. 100 in western Burkina Faso, challenging previous estimates of around A.D. 1100. The study reveals a long history of sustainable farming practices and the importance of wild foods in early agricultural diets.
The University of California, Riverside, has received a nearly $1.6 million grant from the National Science Foundation to sequence the genome of the cowpea, a legume crop crucial for global food security. The research aims to develop high-yielding and disease-resistant cowpea varieties using genetically informed breeding strategies.
The Zika virus poses a significant threat to West Africa, particularly in Liberia, Sierra Leone, and Guinea, due to the recent Ebola outbreak. Rapid testing for Zika is crucial to prevent confusion between Zika and early Ebola symptoms.
The Cornell University-led project will develop heat-tolerant wheat strains using modern tools of comparative genomics and big data. The four-year grant aims to improve wheat resistance to stem and yellow rust, increasing global yields for smallholder farmers in vulnerable regions.
A study published in The BMJ found that refugees have a substantially higher risk of psychotic disorders, including schizophrenia. Refugees were up to 3.6 times more likely to develop psychosis than the Swedish-born population, with incidence rates of 1264 per million.
A Cornell University-led initiative, GREAT, aims to create more inclusive agricultural systems by addressing priorities of both women and men researchers. The project will train over 200 researchers across sub-Saharan Africa on gender-responsive research.
The African Postharvest Losses information System (APHLIS) will be upgraded to monitor other crops, improving postharvest management. The new system will provide data on crop quality, income, and nutrition, enabling strategic targeting of investment in loss mitigation and R&D programmes.
Climate change poses a significant threat to African food production, with up to 30% of maize and banana-growing areas becoming unviable by the end of the century. Transformation could involve changing crop types, improving irrigation systems, or abandoning agriculture altogether to ensure food security.
A new study by Harvard T.H. Chan School of Public Health finds that HIV/AIDS prevention and treatment will cost $261 billion if coverage is scaled up, exceeding domestic financing capabilities. The researchers emphasize the need for innovative funding sources to sustain control efforts.
Researchers discovered chimpanzees in West Africa throwing stones at trees, resulting in accumulations of rocks at these sites. The behavior appears to have cultural elements and has been observed in adult males and females, with no apparent link to foraging or resource availability.
The study proposes a multi-criteria decision aid framework to assess water storage systems, prioritizing farmers as key stakeholders. Outranking assessment is suggested to facilitate systematic planning and inclusion of various criteria, ensuring more effective water storage investments in Sub-Sahara Africa.
A national free ambulance services programme in rural Ethiopia has seen a drastic reduction in pregnancy-related deaths, with the model potentially paving the way for improved maternal health outcomes across Sub-Saharan Africa.
A study by a team of geneticists found that only 22% of Panamanian men have Y-chromosomes originating from Native American ancestors, while 60% have Eurasian origins. This suggests the Spanish conquest had a lasting impact on the region's gene pool.
Global experts celebrate a major public health achievement with the introduction of MenAfriVac®, a vaccine designed for Africa that has nearly eliminated serogroup A meningococcal disease. Over 235 million children and young adults have been immunized, reducing cases from 250,000 in 1996 to just 80 in 2015.
A new analysis of 26 shrub species in South Africa reveals that climate, fire, and soil factors significantly influence population dynamics. The study's findings provide insights into how these interactions shape the reproductive and survival patterns of plants.
A bioinformatics error affected the results, overestimating the genetic impact. The corrected study reveals extensive Eurasian admixture only in Eastern Africa.
Scientists discovered that Homo neanderthalensis and Homo sapiens interbred at least twice, 100,000 and 50,000 years ago. The findings contradict the previous understanding of Neanderthals' genetic makeup and suggest a more complex evolutionary history.
The study reveals that Schistosoma mansoni, a blood fluke infecting over 250 million people worldwide, originated in East Africa and was transported by slave traders to the Caribbean. Genomic comparison with a closely related species identifies key genetic variations enabling the parasite to infect humans.
A team of European researchers has predicted increased hunting pressure in the Congo Basin, leading to dramatic population declines or extinctions. The study identified areas with high hunting pressure, including Virunga National Park and the Okapi Wildlife Reserve.
Research by University of East Anglia suggests that African agricultural policies aimed at alleviating poverty may be making things worse for the poorest. The 'green revolution' policies in Rwanda have been shown to strip smallholder farmers of their main productive resource, land, and exacerbate poverty.
A University of Illinois researcher found that a country's governance quality affects the livelihoods of families who rely on resources from national parks. In Benin, better governance led to better social and ecological outcomes, while Niger's poor governance resulted in negative consequences for poorer communities.
A new study by University of Michigan anthropologist Andrew Marshall highlights major gaps in research effort, with a disproportionate focus on charismatic great apes. This bias leads to crucial knowledge gaps in tropical protected areas and unrealistic assessments of threatened taxa.
Researchers found similar patterns in engraved ostrich eggshells across different sites, indicating the sharing of symbolic material culture. This exchange enabled groups to adopt and adapt new technologies and cultures, contributing to the survival and development of Homo sapiens.
A cohort study found a bidirectional association between intimate partner violence and depression among pregnant women and new mothers in South Africa. The study suggests that combination interventions addressing both violence and mental health may be effective in interrupting the cycle.
New research highlights the slow progress made in preventing stillbirths, despite significant reductions in maternal and child deaths. The study reveals that most stillbirths are preventable with improved quality of care during labor and birth.
A recent study found that mildly deleterious mutations evolve as neutral during early human migrations out of Africa, while very harmful mutations are found at similar frequencies globally. This suggests a maximum threshold for human tolerance to genetic damage.
The Walter Reed Army Institute of Research is conducting a Phase 2 clinical trial to evaluate the safety and immunogenicity of an Ebola vaccine regimen in healthy and HIV-infected study volunteers. The trial includes two vaccine candidates and will assess their safety and immune response in volunteers up to 70 years old.
Research reveals that domesticated grains were adopted late and sporadically in North Africa, with communities instead integrating them into their existing nomadic lifestyle. This challenges the conventional narrative of a gradual transition to settled agriculture.
A new study has identified the factors contributing to the transmission of zoonotic diseases from bats to humans, highlighting areas at high risk in West Africa, sub-Saharan Africa, and South East Asia. The research used data spanning over 110 years to create a global map showing hotspots for bat-human virus transmission risk.
Researchers found that South Africa reduced childhood deaths associated with HIV but failed to meet the MDG4 goal due to its narrow definition. The country's progress is deemed a 'success' when considering overall child mortality levels, despite not meeting the target.
Scientists recreated the skull of the last common ancestor of Homo sapiens and Neanderthals by applying digital methods and statistical techniques. The 'virtual fossil' reveals that this ancestral population likely originated in Africa and had early hallmarks of both species, with a split timeline of around 700,000 years ago.
Researchers from California and Saudi Arabia found that nearly 40% of red palm weevils flew more than 10 kilometers, with some reaching distances of up to 50 kilometers in just 24 hours. The study provides valuable insights into the flight capabilities of these pests.
A new study reveals that divorce rates in sub-Saharan Africa have decreased over the past two decades, primarily due to older unions becoming more stable. The research found that as women enter into marriages at an older age, the likelihood of marriage breakdown decreases, resulting in fewer divorces.
The study reveals high genetic diversity of TB strains in Ethiopia, suggesting that Europeans introduced a new wave of virulent strains. The findings contradict the long-held 'virgin soil hypothesis' and shed light on past epidemics of TB.
A comprehensive genomic analysis of Ebola virus sequences from Liberia reveals a single introduction source, followed by local spread and diversification. The study also identified reintroductions as a key factor in the continuation of the outbreak in Guinea.
Research studies presented at the IOF regional meeting found significantly low levels of vitamin D in different population groups across the Middle East. The studies revealed high prevalence of vitamin D deficiency, affecting all age groups, sexes and local/non-local populations.
Experts presented research on the complex relationship between diabetes and bone, highlighting increased risk of fragility fractures in people with type 2 diabetes. The studies found that diabetic patients may experience higher BMD but lower bone microstructure quality, leading to an increased risk of wrist fracture.
The IOF Young Investigator Research Award is offered to researchers aged 40 years or younger. The award includes a grant of 1000 USD and the opportunity to present at a special oral session during the Meeting.
The GEO-CRADLE consortium coordinates regional institutions to support effective integration of Earth Observation (EO) capacities, modeling, and data exploitation skills. The project provides a roadmap for implementing GEOSS and Copernicus in the region, with a focus on climate change, food security, access to raw materials and energy.
Injuries have fallen by almost a third since 1990, with car crashes, self-harm, and falls making up the top causes, while fracture injuries require hospital admission. The global injury toll remains high but decreased in most regions, prompting researchers to conclude that the world is becoming safer.
The Bill & Melinda Gates Foundation approved $1.5 million funding for King Abdullah University of Science and Technology (KAUST) to combat Striga hermonthica, a destructive parasitic weed in sub-Saharan Africa. The research aims to enhance food security for millions by providing lifesaving control methods.
A new study finds that malaria risk in Africa is shifting due to climate change, with the highest-risk transmission zone moving eastward and expanding into new areas by 2080.
A team of scientists reconstructed wildlife populations across Africa to better understand how they shaped the world. They focused on large mammal herbivores and found that dry areas had fewer animals, while wetter savannas were dominated by elephants and fire.
Researchers warn that Africa's planned 'development corridors' could have devastating environmental impacts, including habitat disruption and loss of biodiversity. The corridors, spanning 53,000 km, would crisscross the continent and prioritize agricultural production over environmental conservation.
A study published in PLOS Medicine found that while HIV mortality declined and life expectancy improved for all adults following ART scale-up, the improvements were greater for females than males. Female adult life expectancy increased by 13.2 years, while male life expectancy increased only 9 years.
Chapman University associate professor Hesham El-Askary is the regional coordinator for a €3 million European Union Grant. The project, GEO-CRADLE, aims to strengthen earth observation networks in the region, addressing specific challenges affecting global understanding of climate and natural resources.
Tropical Cyclone Megh formed in Arabian Sea, moving west past Horn of Africa and into the Gulf of Aden. The storm is expected to make landfall in southeastern Yemen on November 10 with maximum sustained winds near 75 knots.
A vaccine developed for African meningitis A has led to the control and near elimination of deadly disease in 26 countries. However, scientists warn that unless countries maintain high levels of protection through routine immunization schedules, the disease could rebound in 15 years.
A recent study published in Current Biology suggests that growing up in a non-religious household may increase altruism in children. The research found that children from non-religious families were significantly more likely to share with others, contrary to the commonly held notion that religion promotes generosity.
Researchers found that anthropogenic warming in the west Pacific likely contributed to the 2014 drought in East Africa. The study used a data set to show that the region is drier than ever, with eight droughts occurring over the past 15 years.
A study found that switching to efavirenz-based therapy did not result in higher rates of viral rebound or failure in HIV-infected children with suppressed viral loads. This approach may offer advantages in these patients.
Refined estimates suggest nearly three million AIDS deaths by 2010, highlighting the need for accurate reporting to monitor HIV control efforts. The study found that 93% of AIDS deaths were misattributed to other causes, hindering progress in South Africa.
Every year, thousands of people in impoverished communities die from snakebites due to the unavailability and high cost of anti-venom treatment. Despite efforts to address this issue, many countries remain unable to provide affordable solutions.
Vulnerable populations face dire consequences from snake bites, with millions dying or maimed due to inadequate treatment and affordability issues. The head of the Australian Venom Research Unit argues for urgent international action to strengthen regulatory agencies and increase access to effective antivenoms.
A recent study by Carnegie Institution for Science found that elephants are responsible for a high tree-fall rate in Kruger, driven by population density and fire frequency. The research used LiDAR technology to map millions of trees across the reserve, providing insights into ecosystem management and conservation.
A recent NIH study found that artemisinin-resistant Plasmodium falciparum parasites can infect diverse mosquito species in Africa, including Anopheles coluzzii. This discovery suggests a higher risk of drug-resistant malaria infections in Africa, posing challenges to efforts to prevent and eliminate the disease.
Scientists uncover European roller's migratory routes, resting areas and wintering grounds, revealing key areas of conservation importance. The study highlights the species' fragile state of conservation and the impact of human activities on its migration patterns.
Researchers cast doubt on lunar impact date methods by analyzing meteorite-impact zircons, suggesting contextual information loss upon separation from host rocks. This may affect our understanding of the late heavy bombardment on the young Moon, which could influence life's emergence timeline.
A new series of assays explores how African smallholders can meet SDG2 by using biosciences to protect crops from diseases and pests, increase yields, and promote food security. The results provide recommendations for policymakers, educationalists, and those interested in smallholder agriculture.
Estimated electricity production from African urban waste could reach 122.2 TWh in 2025, alleviating energy poverty for millions. However, poor waste management limits actual potential to 83.8 TWh, affecting 27 million families.