Articles tagged with Africa
A study published in PLOS ONE suggests climate change may increase agricultural land availability in the North, but reduce it in tropical regions. This shift could lead to more frequent harvests in some areas and fewer in others, impacting global food production.
Global homicide rates have been declining since the mid-1990s, with an average drop of 40% in 15 years. Effective policing strategies, rehabilitation methods, and societal attitude shifts are key to reducing violence. Experts agree that global rates of violence can be halved by 2040 if the right policies are implemented.
New research finds that South African patients with HIV have chances of remaining alive beyond 2 years on ART comparable to those of North American patients. After correcting for under-ascertainment of mortality, researchers found higher mortality rates in South Africa compared to Europe and North America.
African green revolution could boost land use and carbon emissions, contrary to previous successful initiatives in Asia and Latin America. Researchers warn of potential environmental consequences despite potential long-term benefits like cheaper food and reduced poverty.
Scientists have identified a new species of titanosaurian dinosaur, Rukwatitan bisepultus, in Tanzania, with unique features that set it apart from other finds. The discovery contributes to understanding the evolution of species in sub-Saharan Africa and the global portrait of titanosaurians.
Improving agricultural productivity in Africa could lead to an increase in global deforestation rates and carbon emissions. However, the study found that if markets become more integrated, the negative effects of a green revolution in Africa will diminish over time.
A new Comment in The Lancet calls for a Global Health Systems Fund to prevent future infectious disease crises and strengthen health infrastructure. The proposed fund would address human resource shortages and fragile health systems that contributed to the devastating Ebola outbreak.
Researchers in southern Africa used beryllium-10 and aluminum-26 to measure erosion rates, finding five meters per million years in non-tectonically active regions. This rate is significantly lower than basin-average erosion rates, with stable upland surfaces remaining unchanged since the Pliocene.
South Africa is experiencing its 'Cape Fire Season' with high veld fire danger ratings expected in the north-western interior and along the coast. Prolonged drought and warm, dry winds are fueling the fires, which also pose a risk to farmland and yearly food production.
A new report by Princeton University researchers suggests that expanding the age of eligibility for measles vaccination from 12 to 15 months could significantly increase coverage in Africa. The study found that increasing the age range would have the most impact on countries with high rates of unvaccinated children.
Researchers found that the European CA-MRSA clone CC80 evolved from a sub-Saharan African methicillin-sensitive ancestor. The bacteria simultaneously acquired resistance to methicillin and fusidic acid, which is thought to be due to selective pressure in North Africa and Europe.
A global analysis of honeybee genome variation reveals high levels of genetic diversity and suggests the species originated from Asia. The study also identifies specific mutations linked to adaptation to climate and pathogens, providing new insights into evolution and genetic adaptation.
The Ebola virus outbreak in West Africa has claimed over 1,000 lives, with healthcare professionals facing new challenges in capital cities and Nigeria. Dr. Fauci emphasizes the need for sound public health practices, community engagement, and international assistance to defeat the epidemic.
Researchers found nearly all Cameroonian aluminum pots contain high levels of lead, exceeding US guidelines for safe consumption. The study highlights a previously unrecognized source of lead exposure in Africa and Asia.
The majority of adults worldwide are falling short of the recommended five servings (400 grams) per day, with a significant shortfall found in people's diets globally. Eating foods rich in phytonutrients may provide health benefits, including promoting eye and bone health.
A new peer-reviewed paper by the Wildlife Conservation Society suggests that all ivory markets must be closed to conserve Africa's elephant populations. The paper argues that corruption and organized crime make legal trade in ivory a major factor contributing to the decline of elephants.
The Medical Education Partnership Initiative (MEPI) is a $130 million NIH-funded program that has increased enrollment and broadened curricula in sub-Saharan Africa. MEPI has also improved Internet access, skills labs, and research capacity development, with significant accomplishments reported from institutions across the region.
A new study found that urbanization in rural sub-Saharan Africa is associated with increased risk of cardiovascular and metabolic diseases. Living in more urban villages was linked to poorer lifestyle choices, such as physical inactivity and heavy drinking, despite the benefits of access to education, healthcare, and improved sanitation.
A groundbreaking study in Tanzania successfully infects volunteers with malaria in a controlled laboratory setting, paving the way for accelerated development of new treatments. The innovative PfSPZ Challenge method eliminates the need for live mosquitoes, reducing costs and increasing accessibility to malaria research and treatment.
Archaeologists at the University of Toronto and University of Cape Town have uncovered tens of thousands of Earlier Stone Age artifacts in the Northern Cape province of South Africa. The site is estimated to be between 700,000 and one million years old, offering valuable insights into human evolution.
Hundreds of wildfires covered central Africa in mid-July 2014, with multiple hotspots detected across the region. Strong winds exacerbated smoke from the fires, particularly in the Democratic Republic of Congo.
Researchers have developed a simplified method to purify water using Moringa oleifera seed extracts, significantly reducing harmful bacteria levels. This cost-effective approach holds promise for improving access to safe drinking water in developing countries where millions die from waterborne diseases annually.
Researchers mapped water trends in African maize-growing areas between 1979 and 2010, finding increases in water availability during the growing season. However, some regions experienced declines due to decreased evaporative demand and changing rainfall patterns.
A new analysis finds that oil palm plantations in Africa overlap with great ape habitats, posing a significant threat to apes. The study suggests urgent need for guidelines to minimize negative effects on wildlife and promote sustainable land use.
A study published in JAMA found that combining varenicline with nicotine replacement therapy significantly improved smoking cessation rates at 6 months compared to varenicline alone. The combination treatment resulted in higher continuous abstinence and point prevalence abstinence rates, but also more side effects.
A team of researchers, including Smithsonian paleoanthropologist Richard Potts, suggests that human traits evolved separately and at different times rather than all together. This flexibility likely enhanced the ability of human ancestors to adapt to unstable environments and disperse from Africa.
A recent study published in PLOS ONE reveals that urbanisation and westernization are linked to rising obesity rates among Nigerian women, particularly those with higher socio-economic status. The findings highlight the need to address both malnutrition and obesity as major public health concerns in Nigeria.
Scientists from the California Academy of Sciences have discovered a new species of round-eared sengi in southwestern Africa, showcasing the critical role of scientific collections in biodiversity studies. The Etendeka round-eared sengi is the smallest known member of the order Macroscelidea.
The new estimates of neonatal infections highlight the high burden of sepsis, meningitis, and pneumonia in regions. The study's findings support the urgent need for more investment and action to reduce newborn deaths due to severe infection through prevention and treatment with antibiotics.
Leading medical authorities call for global mental health objectives, a UN High Level Meeting on Mental Health, and efforts to end stigma and human rights violations. The experts say action is urgently needed, particularly in Africa, where mental health disorders account for a huge burden of disease and disability.
Researchers at the University of Texas Medical Branch have identified a new mutation in the chikungunya virus that could lead to more efficient transmission and infection. The mutation, which emerged in the Indian Ocean Basin, has the potential to spread to temperate regions where the Asian tiger mosquito thrives.
A special issue of Studies in Family Planning examines the reasons behind unmet need for contraception, highlighting factors such as social pressure, insufficient information, and side effects. The articles provide practical strategies to increase contraceptive knowledge and uptake, ultimately improving family planning programs.
Researchers from GFZ, University of Sydney, and University of London discovered that the centre of a rift migrates laterally during continental break-up, causing asymmetry in continental margins. This process leads to the formation of thin crustal slivers on one side and more pronounced asymmetry due to faster extension velocity.
The Union of Concerned Scientists (UCS) report reveals that programs and policies to reduce tropical deforestation have been successful in 17 countries across four continents. Successful reductions result from various policy options, including forest protected areas, moratoriums, and financial incentives through the REDD+ program.
Experts warn of acute health and environmental concerns due to growing e-waste generation in Latin America, with the region's middle class driving demand for electronic equipment. The UN-backed academy aims to foster multi-stakeholder partnerships to address e-waste management, but regulatory instruments remain limited.
Researchers tracked two consecutive years of zebra migrations between Chobe River in Namibia and Nxai Pan National Park in Botswana, covering a straight-line distance of 250km (500km round-trip). The findings highlight the importance of trans-frontier conservation areas in preserving great terrestrial migrations.
Grand Challenges Canada announces $12 million investments in global health projects aiming to reduce maternal, newborn and child mortality. Four Canadian-based projects will share $2.6 million in scale-up grants.
Ape ancestors' diets evolved from hard-shelled fruits and seeds to soft and mixed fruit-eating, with no diet specializing in leaves. The dietary specialization may have ultimately contributed to their extinction when drastic environmental changes occurred.
Nizar Ibrahim, a University of Chicago paleontologist, has been selected to National Geographic's Emerging Explorers program. He receives a $10,000 award to aid further research and exploration in the deserts of North Africa, where he discovers fossil footprints and a new species of flying reptile.
A new study has precisely dated the Bentiaba fossil locality to 71.5 million years ago, spanning 30 million years of sediments and shedding light on ancient marine life and environments. The analysis allowed for better understanding of the history of the ancient South Atlantic Ocean.
Students in Cape Town spend almost 60% of their day in poorly ventilated classrooms, at risk of TB transmission. The researchers recommend increasing natural ventilation to reduce risks and lower CO2 concentrations.
Climate change impacts vary widely across Africa, with specific regions at high risk due to drought and flooding. The study identifies hotspots in Sudan, Ethiopia, Lake Victoria, and South Africa, requiring adaptive measures to mitigate damage.
Researchers estimate that mass vaccination campaigns have reduced yellow fever cases and deaths across Africa by 27%. The campaigns have led to a substantial decrease in the disease's burden, with higher reductions in some countries targeted by vaccination efforts.
Since 1990, global maternal and child deaths have declined by nearly half, with significant acceleration after the Millennium Development Goals were set. Improved education, income growth, technological advances, and increased investment in maternal and child health have contributed to this progress.
The US has seen a disturbing trend of increasing maternal mortality, ranking 60th globally with 796 maternal deaths in 2013. The largest increase occurred among women aged 20-24, and possible explanations include lack of prenatal care access and high caesarian section rates.
Scientists have discovered several new species of Sub-Saharan African Ensign wasps that exhibit transverse fore wing folding, a unique mechanism previously seen only in earwigs, cockroaches, and beetles. This discovery has potential applications in aerospace and bio-inspired technologies.
Stanford scientists warn that climate change will strengthen African easterly waves, bringing more intense rainfall to drought-prone areas. The warming atmosphere is also expected to increase dust transport across the Atlantic, affecting air quality and regional weather patterns.
The Apodanthaceae family comprises 10 species of endo-parasitic plants, specialized to parasitize legumes or willow family species. The study provides a key, distribution map, and color photos of most species, shedding light on their ecology and evolution.
A new program combines NASA's LabNotes and FieldNotes technologies with the mFarms platform to provide relevant satellite data to African farmers and distributors. This collaboration aims to improve crop health, reduce food insecurity, and enhance agricultural productivity in sub-Saharan Africa.
The loss of large wildlife has been directly correlated with a significant increase in rodents and zoonotic diseases dangerous to humans. The study suggests that conservation efforts could help mitigate the problem of rodent-borne diseases.
Research found that pregnant immigrants from Sub-Saharan Africa, Latin America, and Caribbean islands are at higher risk of preeclampsia and eclampsia compared to women from other regions. Obstetricians should consider these pregnancies as high-risk and provide enhanced surveillance and culturally sensitive care.
Researchers found East African honeybees resistant to invasive parasites, but preliminary data suggests habitat loss and drought may be major factors driving colony declines. The study recommends protecting nesting habitats and native flowering plants to maintain healthy bee populations.
A Dartmouth-led study found that air temperature drove the expansion and contraction of glaciers in Africa's Rwenzori Mountains at the height of the last ice age. The research suggests that tropical glaciers are rapidly shrinking due to warming climate, not declining snowfall or other factors.
A new study found that children treated at private clinics in sub-Saharan Africa are less likely to receive life-saving oral rehydration therapy, while poorer and rural children face significant disparities in care. The research estimates that closing the gap in care could save up to 20,000 lives annually.
A new diagnostic tool has been developed to identify children with emotional behavior disorders, including those orphaned by HIV/AIDS. The study found that poverty may wash out any effects of AIDS on the children's mental health, and that community-based organizations need training to respond to their needs.
Two new species of weakly electric fishes, Petrocephalus boboto and Petrocephalus arnegardi, have been discovered in the Congo River basin. The species were named after words meaning peace and fellowship in Lingala language, reflecting the authors' hope for peace in troubled Central Africa.
The study found that rural households in areas with low access to improved water and sanitation are more likely to lack these basic services. Geographical mapping reveals substantial levels of inequality in access to improved drinking-water supplies and sanitation across sub-Saharan Africa.
Global health funding reached an all-time high of $31.3 billion in 2013, driven by increased support for maternal and child health. Non-communicable diseases (NCDs) continue to receive relatively little development assistance, despite being a major burden in the developing world.
A study published in Current Biology found that lactase persistence variants were at medium frequencies among the Khoe people, but very low or absent among San hunter-gatherers. The research suggests that pastoralist practices were brought to southern Africa by a small group of migrants from eastern Africa.
Scientists from Museum für Naturkunde Berlin use genetic data and sound analysis to determine the taxonomic status of two West African treefrog species. They found that two previously considered a single species actually belong to two distinct species, one large and one small, with different call characteristics.