Articles tagged with Africa
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Tropical Storm Nadine has formed in the Eastern Atlantic, with NASA's Suomi NPP satellite providing a visible image of the storm. The National Hurricane Center forecasts additional strengthening through Wednesday before weakening by early Thursday.
Researchers analyzed Lake Magadi sedimentary cores, showing a long-term drying trend starting around 575,000 years ago. This period of aridification coincided with extinctions of large grazing mammals and the appearance of Middle Stone Age artifacts.
The oldest well-dated specialized bone tool associated with the Aterian culture of the Middle Stone Age has been discovered in Morocco, dating back approximately 90,000 years. The tool's origins and manufacture are distinct from similar-aged sub-Saharan artefacts, suggesting a unique technological industry in North Africa.
Ledumahadi mafube, a 12-tonne giant plant-eater, was the largest land animal alive when it lived nearly 200 million years ago. The new species' fossil reveals insights into its evolution and geographic history.
Researchers describe new species Ledumahadi mafube, a giant relative of Brontosaurus that walked on all fours. The discovery sheds light on the evolution of sauropods and reveals that massive body sizes were possible in early four-legged dinosaurs.
A new study has mapped areas across Africa with high concentrations of child deaths from diarrhea, revealing uneven progress over 15 years. The research highlights the need for targeted interventions in local communities to mitigate the problem, as national strategies may be less effective due to regional inequalities.
The study uses genetic matching and port data to identify the three largest cartels involved in African elephant ivory trade. The researchers hope their findings can help police this illegal trade and strengthen ongoing cases against particular cartels.
Post-tropical cyclone Helene is affecting Ireland and the United Kingdom with widespread cloud cover and showers. The U.K. Meteorological Service has issued a Yellow Alert for several regions due to expected windy weather with gusts reaching 50-60 mph.
A 73,000-year-old drawing made on a silcrete flake in Blombos Cave, South Africa, is the oldest known example of human-made art. The team used various techniques, including microscopy and Raman spectroscopy, to confirm that the lines were applied to the stone.
Archaeologists have discovered the oldest known abstract drawing made with a piece of ocher used as a pencil, dated to 73,000 years ago. The drawing, found on a silcrete fragment in Blombos Cave in South Africa, confirms that early humans intentionally created and used symbols.
The BRICS countries have seen significant growth in academic activity between 2000 and 2015, reaching 29% of global publications cited in Scopus. China's exceptionally high rate of publications led the way, while Russia saw a notable increase after 2013.
The PROFORMA project aims to strengthen national infrastructures for drugs safety monitoring in four East African countries. The five-year project, funded by EUR 6 million, includes training at Master's and postgraduate level and exchange of knowledge between researchers and experts.
A recent study published in The Lancet found that armed conflicts across Africa may have resulted in the deaths of as many as 5 million children aged under 5 years between 1995 and 2015. Conflict increased mortality risk for infants and children, particularly those born near conflict zones or exposed to higher-intensity conflicts.
Researchers sequenced eggplant and wild relative plastomes, finding a single event led to two lineages: one in Africa and the other in Asia. This dispersal resulted in the current wide distribution of eggplant relatives across Africa, linked to African elephant and impala seed dispersal.
The discovery of Bannykus and Xiyunykus provides significant insights into the evolution of alvarezsaurs, an enigmatic group of theropod dinosaurs. The fossils reveal transitional steps in their adaptation to new diets, showing that these dinosaurs evolved short arms only later in their evolutionary history.
The Central Africa region is experiencing rapid urbanization and economic growth, making it more vulnerable to explosive infectious disease outbreaks. The authors note that efforts to build up health care infrastructure are critically needed to mitigate or prevent a large outbreak of Ebola or other infectious diseases in the region.
Researchers re-examined ancient Propotto leakeyi fossil and found it was an early relative of the aye-aye, challenging the long-held view that lemurs descended from a single wave to Madagascar. The study proposes two lineages split in Africa before coming to Madagascar, suggesting a more complex evolutionary history.
A six-session school-based program significantly reduced the chances that students would force sex on someone else, with an effect that held true over four years. The intervention also showed promise in reducing victimization, although this effect was not significant over the entire time period.
A new technique links samples to individuals and locations, providing continuous national surveillance for eradicating tuberculosis and drug-resistant tuberculosis. The Western Cape Province in South Africa was used as a testing ground for this method, revealing spatially heterogeneous rifampicin-resistant tuberculosis rates.
A 5,000-year-old monumental cemetery near Lake Turkana in Kenya suggests alternative models for understanding the relationships between monuments and social change. The site's burial of diverse individuals with personalized ornamentation indicates no social stratification.
Researchers analyzed ape parasite genomes related to Plasmodium vivax, the main source of mosquito-borne malaria outside Africa. They found near-identical genomes between ape and human parasites, differing by only two percent within gene sequences that code for proteins.
African oil palm cultivation could impact primates due to high demand for the crop. The study found that only 3.3 million hectares of land offer little impact on primates, while 273 Mha can be planted with varying yields.
A new study finds that only a few areas in Africa are suitable for palm oil production without harming primate populations, raising concerns about the industry's impact on conservation. The research highlights the need for sustainable practices and policy initiatives to mitigate large-scale deforestation.
Researchers found significant overlap between areas suitable for oil palm production and primate conservation priorities in Africa, highlighting the need for sustainable practices to balance both interests. Only a few regions, like Madagascar, were identified as suitable for palm oil production with low conservation risks for primates.
Researchers have identified the geographical origins and global spread of HBV genotypes D and A, which originated in the Middle East and North Africa. The study reveals differences in their dissemination patterns, influenced by prehistoric and recent human migrations.
Researchers at Lund University tracked the flight height of two small bird species migrating from Scandinavia to Africa, finding they flew as high as 3,950m. The study used a data logger to measure acceleration, air pressure, and temperature during flight, revealing the birds' altitude adjustments in response to changing wind conditions.
A £2 million project, ARCS, aims to tackle sepsis in Africa by creating sustainable partnerships between research, clinical, and government organizations. The initiative focuses on delivering high-quality training, establishing care quality indicators, and testing innovative interventions.
Researchers developed a dynamic model to simulate virus spread and conducted a national serological study to assess transmission levels and vaccine coverage required. The results suggest that certain pastoral production systems act as virus reservoirs, emphasizing the need for adapted vaccination strategies in high-risk populations.
Homo sapiens developed a unique ecological position as a global 'general specialist', occupying diverse and challenging environments. The species' ability to adapt to extreme settings stands in contrast to previous and coexisting hominins, suggesting how it became the last surviving hominin on Earth.
Researchers at Vanderbilt University Medical Center have isolated two potent monoclonal antibodies that efficiently neutralized the Zaire, Sudan, and Bundibugyo ebolaviruses. These antibodies also showed protection against infection in animal models, offering a promising lead for the development of injectable antibody treatments.
Researchers from Cambridge University found no evidence of a trade-off between military spending and public services in the Middle East. The study challenges the 'guns versus butter' hypothesis, which suggested that prioritizing military spending led to neglect of health and education, sparking civil unrest.
A decade-long genetic analysis of grasshopper relationships reveals the origin of the broadest lineage of grasshoppers in South America. The study's findings challenge previous assumptions and suggest major shifts in grasshopper classification.
An international survey of 16,000 employees and managers in 15 countries found that managerial support for depression is associated with lower rates of workplace absenteeism. Managers who offered help and support had employees take fewer days off work, while those who avoided discussing the issue led to more absences.
A new study reveals that Indigenous Peoples have ownership, use and management rights over at least 38 million square kilometers of land. This land is spread across 87 countries and overlaps with about 40% of all terrestrial protected areas.
A study published in Clinical Nutrition found that heavy drinking causes uncontrolled iron absorption, leading to health issues like heart attacks and liver disease. Iron loading was significantly higher in drinkers than non-drinkers, predicting increased mortality rates.
Human ancestors were scattered across Africa, with diverse habitats and shifting environmental boundaries leading to a staggering diversity of human forms. The mixing of these populations ultimately shaped our species.
A screening tool used on HIV-positive children in South Africa found nearly four times the odds of delays in sitting, standing and speaking compared to HIV-negative children. The study suggests increased attention to early HIV diagnosis and intervention is critical to prevent neurocognitive issues.
Researchers have discovered ancient tools in China that date back to 2.12 million years ago, challenging the long-held assumption that early humans left Africa at this time. The findings indicate that early human ancestors colonized East Asia over two million years ago.
Researchers used genetic analysis to sort bat species, revealing two new species in Kenya. The findings have implications for conservation and farming efforts.
A £2 million project aims to improve asthma control in African schoolchildren, with a focus on 3,000 children aged 12-14. The study will use theatre performances to address asthma knowledge and stigma, and assess the barriers to achieving good control.
Scientists from ANU and overseas have discovered the oldest colours in the geological record, dating back 1.1 billion years. The bright pink pigments were extracted from marine black shales of the Taoudeni Basin in Mauritania, West Africa, and are more than half a billion years older than previous pigment discoveries.
The University of Warwick has been awarded £2 million to develop genomics and modeling tools to combat viral diseases in East Africa. The project will engage health authorities, institutes, and researchers in the region to identify priority questions and link output to policy.
Researchers found that over 80% of natural vegetation began growing in response to pre-rain green-up signals, with woodlands leading the way. The study challenges traditional assumptions about rainfall's role in African plant growth and highlights the need for further research into environmental cues driving this phenomenon.
Researchers developed an accurate diagnostic score that uses two simple blood tests to identify patients in need of treatment against the deadly hepatitis B virus. The test was found to be as accurate as existing methods but at a fraction of the cost, making it accessible for sub-Saharan Africa's poorest regions.
Researchers have discovered ancient Moroccan dental remains that shed light on the history of long-lost African fauna, including embrithopods. The fossilized teeth belong to two new species in the genus Stylolophus and provide evidence for the early evolution of these mammals.
Male cheetahs employ two space use tactics: floaters roam over vast areas and territory holders mark and defend small territories. Females use home ranges with sizes between those of territory holders and floaters, highlighting the need for huge natural areas to conserve these cats.
A new phylogeny of the Pleurodira suborder, including the Yellow-spotted Amazon River turtle, provides insights into the evolutionary history and biogeographical distribution of side-necked turtles. The study found that Pleurodira fossils are scattered across continents, with the oldest species dating back to 125 million years ago.
Researchers have scanned a four-million-year-old fossil cranium and found it shares similarities with that of modern humans. The study revealed the cranium's thick, spongy bone may indicate comparable blood flow to our brains, suggesting an important role in brain protection.
Researchers identified four varieties of high-protein corn that are also resistant or tolerant to the parasitic plant Striga, a major challenge for small-scale farmers in sub-Saharan Africa. These varieties will improve food security and nutrition by allowing farmers to continue growing corn in areas affected by Striga.
A study published in PLOS Neglected Tropical Diseases found that rice and cattle farming are associated with acute infection. The research suggests that controlling Leptospira infection in livestock could play a role in preventing human leptospirosis in Africa.
New fossils from South Africa's Waterloo Farm locality reveal the first African tetrapods lived in Antarctica during the Devonian period. These early vertebrates, named Tutusius and Umzantsia, challenge previous assumptions about tetrapod evolution and terrestrialization.
A two-year project found significant declines in birds of prey across Botswana, with 14 out of 29 species monitored showing decreases. The study suggests climate change and poisoning by poachers as potential causes, highlighting the need for urgent research.
Researchers at the University of Toronto have discovered that southern Africa was significantly wetter and housed a plant community unlike any other in the modern African savanna two million years ago. Human ancestors lived in environments other than open, arid grasslands during this time period.
Researchers tracked a group of young storks as they migrated to Africa and Europe, finding that leader birds lead the way to thermals. The study reveals how flying skill affects wintering grounds, with flappy birds opting for shorter journeys.
Hadziabdic Guerry is a plant geneticist working on the frafra potato project, which aims to transform the species into an alternative food source. The research focuses on assessing the genetic diversity and spatial structure of existing populations to improve production and nutritional value.
A new study by University of Bristol PhD student Zoe Muller found that giraffe group sizes are not influenced by predation risk, contradicting a long-held assumption. Giraffe groups were smaller when adult females had calves, highlighting the complexity of their behavior and ecology.
Tsetse flies transmit Nagana disease to livestock by injecting trypanosomes into the skin, which then invade the bloodstream and cause severe illness. Understanding how these microbes develop inside the fly may lead to new methods of controlling the spread of the disease.
A recent study found that limiting global warming to 1.5°C could reduce extreme climate events in Africa, such as droughts and heatwaves, by up to 25% and 20%, respectively. This reduction is projected despite a slight increase in precipitation extremes.
Researchers found that Homo naledi's brain had a human-like shape and structure, similar to humans, but smaller in size. The study suggests that the species' behavior may have reflected the shape of its brain more than its size, raising new questions about human evolution and the evolution of brain size.
A study finds no correlation between atmospheric CO2 levels and forest expansion/decline, with nations' forest resources mirroring the UN Human Development Index. Forest growth is attributed to factors such as urbanization, market-oriented agriculture, and improved agricultural technologies.