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Life Sciences
Results 301 - 320 of 334.
Brilliant iridescence can conceal as well as attract
A new study shows for the first time that the striking iridescent colours seen in some animals increase their chances of survival against predators by acting as a means of camouflage. Rather than reveal it seems these dynamically changing shades are used to conceal, according to the University of Bristol study published today [23 January] in Current Biology.
A new study shows for the first time that the striking iridescent colours seen in some animals increase their chances of survival against predators by acting as a means of camouflage. Rather than reveal it seems these dynamically changing shades are used to conceal, according to the University of Bristol study published today [23 January] in Current Biology.
Possible Parkinson’s treatment successfully targets two major nerve systems
Scientists have discovered that a non-invasive technique which could one day be used to treat Parkinson's disease, can successfully target a highly specific group of brain cells which play a key role in development of the condition. In 2015, scientists demonstrated that a form of gene therapy could target and stimulate a group of nerve cells affected by the disease, called cholinergic neurons.
Scientists have discovered that a non-invasive technique which could one day be used to treat Parkinson's disease, can successfully target a highly specific group of brain cells which play a key role in development of the condition. In 2015, scientists demonstrated that a form of gene therapy could target and stimulate a group of nerve cells affected by the disease, called cholinergic neurons.
Small predators lose out from human land use
Predators, especially small invertebrates like spiders and ladybirds, are the most likely to be lost when natural habitats are converted to agricultural land or towns and cities, finds a new UCL-led study. The first of its kind, global study on the impacts of human land use on different groups of animals is published in the British Ecological Society journal Functional Ecology .
Predators, especially small invertebrates like spiders and ladybirds, are the most likely to be lost when natural habitats are converted to agricultural land or towns and cities, finds a new UCL-led study. The first of its kind, global study on the impacts of human land use on different groups of animals is published in the British Ecological Society journal Functional Ecology .
A chronicle of giant straight-tusked elephants
About 800,000 years ago, the giant straight-tusked elephant Palaeoloxodon migrated out of Africa and became widespread across Europe and Asia. It divided into many species, with distinct types in Japan, Central Asia and Europe — even some dwarf forms as large as a small donkey on some Mediterranean islands.
About 800,000 years ago, the giant straight-tusked elephant Palaeoloxodon migrated out of Africa and became widespread across Europe and Asia. It divided into many species, with distinct types in Japan, Central Asia and Europe — even some dwarf forms as large as a small donkey on some Mediterranean islands.
Scientists uncover how an explosion of new genes explain the origin of land plants
Scientists have made a significant discovery about the genetic origins of how plants evolved from living in water to land 470 million years ago. The new study, led by scientists from the universities of Bristol and Essex and published today [16 January] in Current Biology , challenge the established view of the origin of plants on land, and reveal that compared to the origin of animals, plants are better at inventing new genes during periods of evolution.
Scientists have made a significant discovery about the genetic origins of how plants evolved from living in water to land 470 million years ago. The new study, led by scientists from the universities of Bristol and Essex and published today [16 January] in Current Biology , challenge the established view of the origin of plants on land, and reveal that compared to the origin of animals, plants are better at inventing new genes during periods of evolution.
Artificial intelligence used to predict 3D structure of proteins
A deep learning system can predict the structure of a protein using its genetic sequence more accurately than any previous modelling system, according to a study by researchers at DeepMind and UCL. Nearly every function our body performs relies on proteins. Predicting the intricate 3D structure of a protein is important because its structure largely determines its function and, once the structure is known, scientists can develop drugs that target this unique shape.
A deep learning system can predict the structure of a protein using its genetic sequence more accurately than any previous modelling system, according to a study by researchers at DeepMind and UCL. Nearly every function our body performs relies on proteins. Predicting the intricate 3D structure of a protein is important because its structure largely determines its function and, once the structure is known, scientists can develop drugs that target this unique shape.
Analysis: Women who have more sex may enter the menopause later
Megan Arnot (UCL Anthropology) discusses a new study conducted with Professor Ruth Mace (UCL Anthropology) which found that women's sexual behaviour is connected with menopause timing. Globally, on average, women experience the menopause at around the age of 50. But there's a great deal of variation in this age both within and between countries.
Megan Arnot (UCL Anthropology) discusses a new study conducted with Professor Ruth Mace (UCL Anthropology) which found that women's sexual behaviour is connected with menopause timing. Globally, on average, women experience the menopause at around the age of 50. But there's a great deal of variation in this age both within and between countries.
Women who have less sex enter the menopause earlier
Megan Arnot (UCL Anthropology) discusses a new study conducted with Professor Ruth Mace (UCL Anthropology) which found that women's sexual behaviour is connected with menopause timing. Globally, on average, women experience the menopause at around the age of 50. But there's a great deal of variation in this age both within and between countries.
Megan Arnot (UCL Anthropology) discusses a new study conducted with Professor Ruth Mace (UCL Anthropology) which found that women's sexual behaviour is connected with menopause timing. Globally, on average, women experience the menopause at around the age of 50. But there's a great deal of variation in this age both within and between countries.
Animals reduce the symmetry of their markings to improve camouflage
Some forms of camouflage have evolved in animals to exploit a loophole in the way predators perceive their symmetrical markings. The University of Bristol findings, published in Proceedings of the Royal Society B today [15 Jan], describe how animals have evolved to mitigate this defensive disadvantage in their colouration.
Some forms of camouflage have evolved in animals to exploit a loophole in the way predators perceive their symmetrical markings. The University of Bristol findings, published in Proceedings of the Royal Society B today [15 Jan], describe how animals have evolved to mitigate this defensive disadvantage in their colouration.
Animals should use short, fast movements to avoid being located
Most animals need to move, whether this is to seek out food, shelter or a mate. New research has shown that movement doesn't always break camouflage and if an animal needs to move, animals that are unpatterned and use short, fast movements are less likely to be located by predators. In most cases, most of the visual field of a predator does not fall within a high-resolution area and so, when an undetected prey moves, that motion will often be in peripheral vision.
Most animals need to move, whether this is to seek out food, shelter or a mate. New research has shown that movement doesn't always break camouflage and if an animal needs to move, animals that are unpatterned and use short, fast movements are less likely to be located by predators. In most cases, most of the visual field of a predator does not fall within a high-resolution area and so, when an undetected prey moves, that motion will often be in peripheral vision.
Into leading cause of stillbirth awarded £2.4 million funding
Researchers have been awarded over £2.4 million to investigate the best technique to manage poor growth in babies during the later stages of pregnancy Fetal growth restriction (FGR) can lead to stillbirth, accounting for half of the cases of stillbirth in the UK. The new international study, funded by the National Institute for Health Research (NIHR), will investigate the best time to deliver babies who are diagnosed with FGR in late preterm pregnancy.
Researchers have been awarded over £2.4 million to investigate the best technique to manage poor growth in babies during the later stages of pregnancy Fetal growth restriction (FGR) can lead to stillbirth, accounting for half of the cases of stillbirth in the UK. The new international study, funded by the National Institute for Health Research (NIHR), will investigate the best time to deliver babies who are diagnosed with FGR in late preterm pregnancy.
Having less sex linked to earlier menopause
Women who engage in sexual activity weekly or monthly have a lower risk of entering menopause early relative to those who report having some form of sex less than monthly, according to a new UCL study. The researchers observed that women, who reported engaging in sexual activity weekly, were 28% less likely to have experienced menopause at any given age than women who engaged in sexual activity less than monthly.
Women who engage in sexual activity weekly or monthly have a lower risk of entering menopause early relative to those who report having some form of sex less than monthly, according to a new UCL study. The researchers observed that women, who reported engaging in sexual activity weekly, were 28% less likely to have experienced menopause at any given age than women who engaged in sexual activity less than monthly.
HIV ’hotspots’ not necessarily major drivers of new infections
Areas of high HIV prevalence, known as 'hotspots', do not necessarily fuel the epidemic in the wider population, say researchers. Hotspots are often targeted for intense HIV control interventions, including treatment and prevention, to maximise their effect and reach the people in greatest need first.
Areas of high HIV prevalence, known as 'hotspots', do not necessarily fuel the epidemic in the wider population, say researchers. Hotspots are often targeted for intense HIV control interventions, including treatment and prevention, to maximise their effect and reach the people in greatest need first.
Brain blood flow sensor discovery could aid treatments for dementia
Researchers at UCL have discovered the mechanism that allows the brain to monitor its own blood supply, a finding in rats which may help to find new treatments for conditions including hypertension (high blood pressure) and dementia. For decades, scientists have suspected that the brain had a way of monitoring and regulating its own blood flow separate from the body-wide blood pressure control system, but until now no one had proven this.
Researchers at UCL have discovered the mechanism that allows the brain to monitor its own blood supply, a finding in rats which may help to find new treatments for conditions including hypertension (high blood pressure) and dementia. For decades, scientists have suspected that the brain had a way of monitoring and regulating its own blood flow separate from the body-wide blood pressure control system, but until now no one had proven this.
Malnutrition linked with increased risk of Zika birth defects
The severity of Zika virus-related deformations in babies has been shown to be affected by environmental factors such as maternal nutrition. Environmental factors, such as the diets of pregnant women, have been shown to have an effect on the extent and severity of developmental malformations in babies associated with Zika virus (ZIKV) congenital infection.
The severity of Zika virus-related deformations in babies has been shown to be affected by environmental factors such as maternal nutrition. Environmental factors, such as the diets of pregnant women, have been shown to have an effect on the extent and severity of developmental malformations in babies associated with Zika virus (ZIKV) congenital infection.
Lack of key protein reduces brain connections in schizophrenia
Brain scans have revealed for the first time how people with schizophrenia have reduced levels of a key protein which helps brain cells to communicate The findings, published today , have shown a lack of a protein called SV2A in the brains of those with schizophrenia, compared to those without. According to the researchers who carried out the study, the findings suggest the protein could provide a new target for research into potential treatments.
Brain scans have revealed for the first time how people with schizophrenia have reduced levels of a key protein which helps brain cells to communicate The findings, published today , have shown a lack of a protein called SV2A in the brains of those with schizophrenia, compared to those without. According to the researchers who carried out the study, the findings suggest the protein could provide a new target for research into potential treatments.
Researchers partner with BBC to test the nation’s intelligence
How clever are you? Can you train yourself to be smarter? And is your reliance on your smartphone making you more stressed or less able to think? These are just a few of the questions researchers hope to help answer as part of a new BBC television programme. The Great British Intelligence Test aims to gauge how the nation fairs when it comes to using our brainpower and could provide new insight into how human intelligence works.
How clever are you? Can you train yourself to be smarter? And is your reliance on your smartphone making you more stressed or less able to think? These are just a few of the questions researchers hope to help answer as part of a new BBC television programme. The Great British Intelligence Test aims to gauge how the nation fairs when it comes to using our brainpower and could provide new insight into how human intelligence works.
Long-term skin irritation linked to increased risk of tumour growth
An antibody that usually helps defend the skin against harmful substances or infections may promote tumour growth during chronic tissue inflammation. One of the skin's defences against environmental assault can help tumours to grow when skin is exposed to chronic inflammation, finds a study in mice published today in eLife.
An antibody that usually helps defend the skin against harmful substances or infections may promote tumour growth during chronic tissue inflammation. One of the skin's defences against environmental assault can help tumours to grow when skin is exposed to chronic inflammation, finds a study in mice published today in eLife.
Global database of all bird species shows how body shape predicts lifestyle
A database of 10,000 bird species shows how measurements of wings, beaks and tails can predict a species' role in an ecosystem. Given that many bird species perform important ecological functions, such as pollinating plants, spreading seeds, or controlling pests, the database may help scientists to understand and predict how the loss of species will affect ecosystem health.
A database of 10,000 bird species shows how measurements of wings, beaks and tails can predict a species' role in an ecosystem. Given that many bird species perform important ecological functions, such as pollinating plants, spreading seeds, or controlling pests, the database may help scientists to understand and predict how the loss of species will affect ecosystem health.
Global database of bird species shows how body shape predicts lifestyle
A database of 10,000 bird species shows how measurements of wings, beaks and tails can predict a species' role in an ecosystem, according to a study led by UCL and Imperial College London. Given that many bird species perform important ecological functions, such as pollinating plants, spreading seeds, or controlling pests, the database may help scientists to understand and predict how the loss of species will affect ecosystem health.
A database of 10,000 bird species shows how measurements of wings, beaks and tails can predict a species' role in an ecosystem, according to a study led by UCL and Imperial College London. Given that many bird species perform important ecological functions, such as pollinating plants, spreading seeds, or controlling pests, the database may help scientists to understand and predict how the loss of species will affect ecosystem health.