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25 Feb 2022

Children may instinctively know how to do division even before hitting the books, study finds

By Peter Rejcek, science writer Image: Fizkes/Shutterstock.com Beginning at an early age, children can perform simple mathematical calculations using an intuitive ability to compare and estimate sets of objects. A new study published to Frontiers suggests this approximate number system extends to division. We often think of multiplication and division as calculations that need to be taught in school. But a large body of research suggests that, even before children begin formal education, they possess intuitive arithmetic abilities. A new study published in Frontiers in Human Neuroscience argues that this ability to do approximate calculations even extends to that most dreaded basic math problem – true division – with implications for how students are taught mathematical concepts in the future. The foundation for the study is the approximate number system (ANS), a well-established theory that says people (and even nonhuman primates) from an early age have an intuitive ability to compare and estimate large sets of objects without relying upon language or symbols. For instance, under this non-symbolic system, a child can recognize that a group of 20 dots is bigger than a group of four dots, even when the four dots take up more space on a page. The […]

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23 Feb 2022

Sharp drop in flower abundance caused by climate crisis will leave pollinators searching further for food

By Mischa Dijkstra, Frontiers science writer Image credit: Ellen D Moss Researchers simulated the warmer, wetter conditions predicted for northern Europe under climate change, by locally heating agricultural fields by 1.5 ºC and increasing irrigation by 40%. These conditions immediately lead to changes in the community of wildflowers and their associated insects. Most plant species were ‘losers’: they grew fewer flowers, secreted less nectar, and set fewer or lighter seeds. This reduced the food resources for pollinators, stimulating them to visit a wider range of plants. It is predicted that global average temperatures will have risen by between 0.9 and 2.0 ºC around the middle of this century, according to the IPCC’s intermediate emission scenario RCP4.5. As a result, many species, especially specialists with highly specific requirements for food, habitat, and reproduction, won’t be able to adapt. Because approximately 35% of our crops depend on insects for pollination, it is necessary to study impact of global warming on the fitness of insects and the wildflowers on which they depend for food. Once we understand the likely changes, we may be able to mitigate the negative effects for wild and crop plants. Here, a study by scientists from Newcastle University in […]

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22 Feb 2022

A replay of life: What happens in our brain when we die?

By Maryam Clark, science writer Image: Okrasiuk/Shutterstock.com Neuroscientists have recorded the activity of a dying human brain and discovered rhythmic brain wave patterns around the time of death that are similar to those occurring during dreaming, memory recall, and meditation. Now, a study published to Frontiers brings new insight into a possible organizational role of the brain during death and suggests an explanation for vivid life recall in near-death experiences. Imagine reliving your entire life in the space of seconds. Like a flash of lightning, you are outside of your body, watching memorable moments you lived through. This process, known as ‘life recall’, can be similar to what it’s like to have a near-death experience. What happens inside your brain during these experiences and after death are questions that have puzzled neuroscientists for centuries. However, a new study published to Frontiers in Aging Neuroscience suggests that your brain may remain active and coordinated during and even after the transition to death, and be programmed to orchestrate the whole ordeal. When an 87-year-old patient developed epilepsy, Dr Raul Vicente of the University of Tartu, Estonia and colleagues used continuous electroencephalography (EEG) to detect the seizures and treat the patient. During these […]

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21 Feb 2022

Eating vegetables does not protect against cardiovascular disease, finds large-scale study

By Mischa Dijkstra, Frontiers science writer A long-term ‘UK Biobank’ study on almost 400,000 people finds little or no evidence that differences in the amount of consumed cooked or uncooked vegetables affects the risk of cardiovascular disease. When known socio-economic and lifestyle confounding factors are corrected for, the small apparent positive effect that remains could likely also be explained away by further confounders. A sufficient intake of vegetables is important for maintaining a balanced diet and avoiding a wide range of diseases. But might a diet rich in vegetables also lower the risk of cardiovascular disease (CVD)? Unfortunately, researchers from the Nuffield Department of Population Health at the University of Oxford, the Chinese University of Hong Kong, and the University of Bristol found no evidence for this. That the consumption of vegetables might lower the risk of CVD might at first sight seem plausible, as their ingredients such as carotenoids and alpha-tocopherol have properties that could protect against CVD. But so far, the evidence from previous studies for an overall effect of vegetable consumption on CVD has been inconsistent. Now, new results from a powerful, large-scale new study in Frontiers in Nutrition shows that a higher consumption of cooked or […]

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21 Feb 2022

Peace has led to more deforestation in Colombia

By K.E.D. Coan, science writer Difference between reserve and cattle ranches in Colombia. Image credit: Sebastian Di Domenico / Shutterstock In the tropics, when conflict affected countries transition to peace, deforestation often increases. But the reasons behind this trend are neither simple nor generalizable, reports a new study from Colombia. By looking at a range of agricultural and societal drivers at multiple scales, this research shows that different factors promote forest loss. Accounting for these variations will be important for developing more effective conservation strategies in the future. The consequences of peace and armed conflict for deforestation depend on the location, reports a new publication in Frontiers in Environmental Science. Using Colombia as a case study, this work presents one of the most comprehensive studies to date comparing forest loss to drivers such as coca cultivation and cattle farming during periods of peace and conflict. These insights will help make conservation efforts more effective by taking into account the land use, politics and socioeconomics on a local level. “There are other studies that show increased pressure on forests after peace agreements, but our results show that it’s very hard to generalize deforestation in the context of conflict,” said co-author Raphael […]

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08 Feb 2022

5 fascinating Frontiers articles you may have missed in January 2022

By Colm Gorey, Science Communications Manager A newly born desert tortoise. Image: K. Kristina Drake/ USGS. At Frontiers, we bring some of the world’s best research to a worldwide audience. But with tens of thousands of articles published each year, many often fly under the radar. Now, as part of new series each month, Frontiers will highlight just some of those amazing papers you may have missed.    1: Too hot to nest? In a hot summer, one tortoise can switch from nesting to developing eggs internally Researchers from Australia and South Africa published an article in Frontiers in Ecology and Evolution identifying what may be a novel reproductive strategy in Chersina angulate tortoises that has the potential to enhance the resilience of species to global warming. After observing a captive colony of in Cape Town, South Africa and checking back through historical data, Gerald Kuchling of The University of Western Australia and Margaretha Hofmeyr of the University of Western Cape found that local ambient temperature altered how females deposited their last clutch of eggs. Periods of unusual heat may result in females switching from depositing their eggs in a nest to develop(oviposition), to growing the egg in their body […]

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07 Feb 2022

‘Try to reverse these wrong stereotypes’ – an interview with Prof Sarah Garfinkel & Dr Lisa Quadt #WomeninScience

By Janine Gronewold and Miriam Engels Interviewee Prof Sarah Garfinkel Interviewee Dr Lisa Quadt During the Covid-19 pandemic, with its repeated lockdowns and social restrictions, many people across the globe have reported increased feelings of isolation and loneliness. Prolonged loneliness is known to be associated with poor mental and physical health outcomes, for example increased cerebrovascular disease. What could be the mechanism underlying this association? That is the subject of a recent perspective article in Frontiers in Integrative Neuroscience. Its authors, Dr Janine Gronewold, a postdoctoral research fellow at the Department of Vascular Neurology and Dementia of the University Hospital Essen, and Miriam Engels, a doctoral student at the Institute of Medical Sociology at the University Clinic Düsseldorf and lecturer at the Open University of the Netherlands, were inspired by a recently proposed framework for adaptive versus maladaptive brain-body interactions. For the International Day of Women and Girls in Science 2022 on 11th February, Gronewold (denoted as JG below) and Engels (ME) here interview two of the authors behind this framework, Dr Sarah Garfinkel (SG), professor at the Institute of Cognitive Neuroscience, University College London, and her postdoc Dr Lisa Quadt (LQ), a research fellow in Clinical Neuroscience at Brighton […]

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04 Feb 2022

Sex disparities in sports medicine research may threaten the health and careers of female athletes

By Emily Parker, University of Iowa Carver College of Medicine Image: leungchopan/Shutterstock.com ‘Hormones’ have long been blamed for anterior cruciate ligament (ACL) injuries in female athletes, but according to a new review paper, one menstrual hormone may be mediating the damage: relaxin. University of Iowa Carver College of Medicine student, Emily Parker, writes to Frontiers that upon noticing the lack of progress in the 20-odd years since early relaxin-musculoskeletal studies, the support of orthopedic department mentors and the assistance of a fellow student allowed a thorough dive into the disjointed, cross-disciplinary research trail. Female athletes are between three and eight times more likely to suffer devastating ACL injuries compared to their male counterparts. That’s according to 16 years of data from the US National Collegiate Athletics Association (NCAA) Injury Surveillance System, published in a new paper to Frontiers in Endocrinology. Alex Meyer, one of the authors of this latest research, noted: “It has almost been accepted that these [ACL injuries] are just more prevalent in women.” The cost of female ACL injuries is huge and multi-faceted, seen in the billions of dollars of healthcare costs, team rosters picked apart by injury come tournament time, and future consequences such as post-traumatic […]

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28 Jan 2022

Extremely harsh volcanic lake shows how life might have existed on Mars

By K.E.D. Coan, science writer Fieldwork at Laguna Caliente, Poás volcano, Costa Rica. Credit: Justin Wang Only a few microbes inhabit Earth’s most extreme environments, but they have varied adaptations to do so, reports a new study. Hydrothermal hot springs such as at the Poás volcano in Costa Rica provide an opportunity not only to explore life on Earth, but also to understand how life might have evolved on Mars. A few specialist microbes survive conditions analogous to those of Mars’ early history, reports a new publication in Frontiers in Astronomy and Space Sciences — and this may be thanks to a broad range of adaptations. One of the most hostile habitats on Earth The hydrothermal crater lake Laguna Caliente of the Poás volcano in Costa Rica is one of the most hostile habitats on the planet. The water is ultra-acidic, full of toxic metals and the temperatures range from comfortable to boiling. In addition, recurrent ‘phreatic eruptions’ cause sudden explosions of steam, ash and rock. Despite such deadly eruptions, hydrothermal environments may be where the earliest forms of life began on Earth — and potentially also on Mars, if there ever was life. Beyond discovering how life can survive […]

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27 Jan 2022

AI breakthrough could revolutionize how we research dinosaur fossils

By Peter Rejcek, science writer Image credit: Natalia van D / Shutterstock.com The use of x-ray computed tomography has greatly improved the ability of paleontologists to study the morphology of dinosaur fossils. Now, thanks to innovations in artificial intelligence, machines may soon be able to tackle the labor-intensive job of  segmentation, a process for classifying similar sections of an image for analysis. Researchers tested different deep neural networks on more than 10,000 CT scans of embryonic skulls with encouraging results. One of the most promising applications of artificial intelligence technologies is the identification of tumors from high-resolution medical imagery. Can the same techniques be used to help paleontologists more quickly analyze similar scans of dinosaur fossils? Researchers reported some of the early answers — and remaining challenges — in a new paper published in Frontiers in Earth Science. Much of what scientists can glean from the fossil record of dinosaurs relies on the morphology of the preserved remains of the animals. To study the interior structure of a specimen generally requires cutting thin sections, effectively destroying the sample in the process. That changed with the introduction of high-resolution scanning technologies like x-ray computed tomography (CT), which basically reconstructs internal structures […]

Featured news

26 Jan 2022

Scientists decode 450 years of boom and crisis in Europe from ages of building timber

By Mischa Dijkstra, Frontiers science writer Roof truss of the Chapelle Saint-Denis in Marmoutier in Alsace, France, from the 16th century. Credit: Willy Tegel Scientists have reconstructed European socio-economic cycles between 1250 and 1699 in unprecedented detail, by using the power of tree rings to reveal the exact age of more than 54,000 pieces of timber from historical buildings. Tracking building activity across the years, estimated from felling year of timber from historical buildings, can yield an unrivaled economic record for premodern Europe. That is the conclusion from a vast study by a consortium of scientists across Europe, published in Frontiers in Ecology and Evolution. By dating timber from tree rings – to the exact year of felling – from historical buildings, and statistically analyzing the distribution of building years, the authors deduce multiple periods of socio-economic prosperity and downturn between 1250 and 1699, independent from other historical data. Crucially, they show how different European regions were differentially affected, and at different times. When historical records are too scant to reconstruct large-scale demographic and societal changes, environmental measures can be used. For example, numbers of shipwrecks have been used in past research to chart trade intensity, pollen to reconstruct agricultural […]