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50 articles from ScienceDaily
Eastern and Western house mice took parallel evolutionary paths after colonizing US
- ScienceDaily
- 21/4/29 20:26
Parallel evolution is common, but do different animal populations evolve in similar ways and alter the same genes to adapt to similar environmental conditions? Researchers tested this in two U.S. populations of house mice. They found independent evolution of a heavier body and larger nests as Eastern and Western populations invaded northern habitats after introduction from Europe. Many of the same...
Treatment found to improve cognitive function in patients with fragile X syndrome
- ScienceDaily
- 21/4/29 20:26
An experimental treatment produced improvements in cognitive function and language in patients with fragile X syndrome, according to new study results.
New atlas of genetic function maps complexities of immune system and immune diseases
- ScienceDaily
- 21/4/29 20:26
A new genetic database for autoimmune and autoinflammatory diseases will allow experts to more deeply understand how immune disorders develop and plan future drug discovery projects. Scientists also hope this atlas of immune-related genome data may eventually be applied to investigations of infectious diseases like COVID-19.
Extent of human impact on the world's plant-life revealed
- ScienceDaily
- 21/4/29 20:26
Research has shed new light on the impact of humans on Earth's biodiversity. The findings suggest that the rate of change in an ecosystem's plant-life increases significantly during the years following human settlement, with the most dramatic changes occurring in locations settled in the last 1500 years.
How diet controls RNA maturation
- ScienceDaily
- 21/4/29 20:26
Particularly sensitive to chemical modifications, mRNAs are molecules responsible for transmitting the information encoded in our genome, allowing for the synthesis of proteins. Two teams have focused on a specific type of chemical modification - called methylation - of mRNA molecules in the small worm Caenorhabditis elegans. They found that methylation on a particular sequence of an mRNA leads to...
How meningitis-causing bacteria may sense fever to avoid immune killing
- ScienceDaily
- 21/4/29 20:26
Researchers have discovered a mechanism through which meningitis-causing bacteria can evade our immune system. In laboratory tests, they found that Streptococcus pneumoniae and Haemophilus influenzae respond to increasing temperatures by producing safeguards that keep them from getting killed. This may prime their defenses against our immune system and increase their chances of survival, the...
Multi-drug resistant infection about to evolve within cystic fibrosis patients
- ScienceDaily
- 21/4/29 20:26
Scientists have been able to track how a multi-drug resistant organism is able to evolve and spread widely among cystic fibrosis patients - showing that it can evolve rapidly within an individual during chronic infection. The researchers say their findings highlight the need to treat patients with Mycobacterium abscessus infection immediately, counter to current medical practice.
A third of kids develop a mental health problem after concussion
- ScienceDaily
- 21/4/29 20:26
A third of children and adolescents develop a mental health problem after a concussion, which could persist for several years post-injury, according to a new literature review.
Lightning and subvisible discharges produce molecules that clean the atmosphere
- ScienceDaily
- 21/4/29 20:19
Lightning bolts break apart nitrogen and oxygen molecules in the atmosphere and create reactive chemicals that affect greenhouse gases. Now, a team of atmospheric chemists and lightning scientists have found that lightning bolts and, surprisingly, subvisible discharges that cannot be seen by cameras or the naked eye produce extreme amounts of the hydroxyl radical -- OH -- and hydroperoxyl radical...
Exploiting plants' ability to 'tell the time' to make food production more sustainable
- ScienceDaily
- 21/4/29 20:19
Plant scientists say circadian clock genes, which enable plants to measure daily and seasonal rhythms, should be targeted in agriculture and crop breeding for higher yields and more sustainable farming.
Fish have been swallowing microplastics since the 1950s
- ScienceDaily
- 21/4/29 19:39
Researchers examined the guts of freshwater fish preserved in museum collections; they found that fish have been swallowing microplastics since the 1950s and that the concentration of microplastics in their guts has increased over time.
New optical hydrogen sensors eliminate risk of sparking
- ScienceDaily
- 21/4/29 18:34
A new study documents an inexpensive, spark-free, optical-based hydrogen sensor that is more sensitive -- and faster -- than previous models.
Wearable glucose monitors shed light on progression of Type 2 diabetes in Hispanic adults
- ScienceDaily
- 21/4/29 18:34
Researchers have shown wearable devices that continuously monitor blood sugar provide new insights into the progression of Type 2 diabetes among at-risk Hispanic/Latino adults.
Combining solar panels and lamb grazing increases land productivity, study finds
- ScienceDaily
- 21/4/29 18:34
Land productivity could be greatly increased by combining sheep grazing and solar energy production on the same land, according to new research.
High vaccination rate is key to future course of COVID-19 pandemic, computer modeling shows
- ScienceDaily
- 21/4/29 18:33
Data scientists who developed highly accurate computer modeling to predict trends for COVID-19 cases nationwide have new research that shows how important a high rate of vaccination is to reducing case numbers and controlling the pandemic.
New law of physics helps humans and robots grasp the friction of touch
- ScienceDaily
- 21/4/29 18:33
Although robotic devices are used in everything from assembly lines to medicine, engineers have a hard time accounting for the friction that occurs when those robots grip objects - particularly in wet environments. Researchers have now discovered a new law of physics that accounts for this type of friction, which should advance a wide range of robotic technologies.
Finding the optimal way to repay student debt
- ScienceDaily
- 21/4/29 18:33
Though legislative reform is necessary to combat the growing burden of student loan debt in the U.S. on a grand scale, individual borrowers can take steps to repay their loans with as low long-term costs as possible. A new mathematical model develops a strategy for minimizing the overall cost of repaying student loans.
Single-cell CRISPR technology deciphers role of chromatin accessibility in cancer
- ScienceDaily
- 21/4/29 18:33
Researchers have developed CRISPR-sciATAC, a novel integrative genetic screening platform that jointly captures CRISPR gene perturbations and single-cell chromatin accessibility genome-wide. The new method harnesses the programmability of the gene editing system CRISPR to knock-out nearly all chromatin-related genes in parallel, offering researchers deeper insights into the role of DNA...
Fasting lowers blood pressure by reshaping the gut microbiota
- ScienceDaily
- 21/4/29 18:33
For the first time researchers demonstrate that intermittent fasting can reduce hypertension by reshaping the gut microbiota in an animal model.
Corals that 'spit' algae
- ScienceDaily
- 21/4/29 18:33
Microalgae of the dinoflagellate group have engaged in intracellular symbioses with corals since primeval times. Researchers recently discovered that such symbioses depend on the ability of the algae to suppress the immune system of their host cell and thereby avoid being 'spit out' again. The researchers also found indications that this cellular immune response is an evolutionarily ancient...
Was North America populated by 'stepping stone' migration across Bering Sea?
- ScienceDaily
- 21/4/29 17:24
A new study may answer 'one of the greatest mysteries of our time . . . when humans made the first bold journey to the Americas.'
Machine learning algorithm helps unravel the physics underlying quantum systems
- ScienceDaily
- 21/4/29 17:24
Scientists have developed an algorithm that provides valuable insights into the physics underlying quantum systems - paving the way for significant advances in quantum computation and sensing, and potentially turning a new page in scientific investigation.
Baby's first stool can help predict risk of developing allergies
- ScienceDaily
- 21/4/29 17:24
Researchers have shown that the composition of a baby's first feces -- a thick, dark green substance known as meconium -- is associated with whether or not a child will develop allergies within their first year of life. By analyzing meconium samples from 100 infants, they show that the development of a healthy immune system and microbiota may start well before a child is born.
Mapping the 'superhighways' traveled by the first Australians
- ScienceDaily
- 21/4/29 17:24
'Superhighways' used by a population of up to 6.5 million Indigenous Australians to navigate the continent tens of thousands of years ago have been revealed by new research using sophisticated modelling of past people and landscapes.
A psychologist's guide to donating more effectively to charities
- ScienceDaily
- 21/4/29 17:24
Donating to a charity is often driven by emotion rather than by calculated assessments based on how to make the biggest impact. A new article looks at how people can be encouraged to direct their charitable contributions in ways that allow them to get more bang for the buck.