Research Study Key Takeaways: Ridesharing can reduce a passenger's risk of being a target of sexual assault by providing a more reliable and timely transportation option for traveling to a safer place. The entry of Uber into a city contributes to a 6.3% reduction in rape incidents. A 1% increase in Uber pickups in a neighborhood translates to a more than 3% decrease in the likelihood of sexual assaults. CATONSVILLE, MD, May 24, 2021 - Contrary to portraits painted in popular media, new research involving ridesharing services shows they provide an additional level of protection for potential sexual assault victims, particularly ...

Regular physical activity has positive effects on children's developing brain circuits, finds a Boston Children's Hospital study using neuroimaging data from nearly 6,000 early adolescents. Physical activity of any kind was associated with more efficiently organized, flexible, and robust brain networks, the researchers found. The more physical activity, the more "fit" the brain. Findings were published in Cerebral Cortex on May 14. "It didn't matter what kind of physical activity children were involved in - it only mattered that they were active," says Caterina Stamoulis, PhD, principal ...

The first detailed cross-section of a galaxy broadly similar to the Milky Way, published today, reveals that our galaxy evolved gradually, instead of being the result of a violent mash-up. The finding throws the origin story of our home into doubt. The galaxy, dubbed UGC 10738, turns out to have distinct 'thick' and 'thin' discs similar to those of the Milky Way. This suggests, contrary to previous theories, that such structures are not the result of a rare long-ago collision with a smaller galaxy. They appear to be the product of more peaceful change. And that is a game-changer. It means that our spiral galaxy home isn't the product of a freak accident. Instead, it ...

SPOKANE, Wash.-- Breast cancer screening took a sizeable hit during the COVID-19 pandemic, suggests new research that showed that the number of screening mammograms completed in a large group of women living in Washington State plummeted by nearly half. Published today in JAMA Network Open, the study found the steepest drop-offs among women of color and those living in rural communities. "Detecting breast cancer at an early stage dramatically increases the chances that treatment will be successful," said lead study author Ofer Amram, an assistant professor in the Washington ...

What The Study Did: Researchers used clinical data to examine differences in breast cancer screenings before and during the COVID-19 pandemic overall and among sociodemographic groups. Data included completed screening mammograms within a large statewide nonprofit community health care system from April 2018 through December 2020. Authors: Ofer Amram, Ph.D., of Washington State University in Spokane, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.10946) Editor's Note: The article includes funding/support disclosures. Please see the article for additional information, including other authors, author contributions ...

What The Study Did: This follow-up study of a randomized clinical trial examines the association between survival and C-reactive protein levels in patients hospitalized with COVID-19 who were treated with tocilizumab. Authors: Xavier Mariette, M.D., Ph.D., of the Hôpital Bicêtre in Bicêtre, France, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamainternmed.2021.2209) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please ...

What The Study Did: Researchers examined changes in reports to poison control centers from 2017 to 2019 of exposures to manufactured cannabis products and plant materials. Authors: Julia A. Dilley, Ph.D., of the Oregon Public Health Division in Portland, is the corresponding author. To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/ (doi:10.1001/jamanetworkopen.2021.10925) Editor's Note: The article includes conflict of interest and funding/support disclosures. Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support. INFORMATION: Media advisory: The full study ...

Tendons are what connect muscles to bones. They are relatively thin but have to withstand enormous forces. Tendons need a certain elasticity to absorb high loads, such as mechanical shock, without tearing. In sports involving sprinting and jumping, however, stiff tendons are an advantage because they transmit the forces that unfold in the muscles more directly to the bones. Appropriate training helps to achieve an optimal stiffening of the tendons. Researchers from ETH Zurich and the University of Zurich, working at Balgrist University Hospital in Zurich, have now deciphered how the cells of the tendons perceive mechanical ...

ANN ARBOR, Mich. - Newborns who experience seizures after birth are at risk of developing long term chronic conditions, such as developmental delays, cerebral palsy or epilepsy. Which is why all of these babies receive medication to treat the electrical brain disturbances right away. While some babies only receive antiseizure medicine for a few days at the hospital, others are sent home with antiseizure medicine for months longer out of concern that seizures may reoccur. But according to a new multicenter study, continuing this treatment after the neonatal seizures stop may not be necessary. Babies who stayed on antiseizure medications after going home weren't any less likely to develop epilepsy or to have developmental delays than those ...

A new study by University of Liverpool ecologists warns that heat-induced male infertility will see some species succumb to the effects of climate change earlier than thought. Currently, scientists are trying to predict where species will be lost due to climate change so they can plan effective conservation strategies. However, research on temperature tolerance has generally focused on the temperatures that are lethal to organisms, rather than the temperatures at which organisms can no longer breed. Published in Nature Climate Change, the study of 43 fruit fly (Drosophila) species showed that in almost half of the species, males became sterile at lower than lethal temperatures. Importantly, the worldwide distribution ...

When a single gene in a cell is turned on or off, its resulting presence or absence can affect the function and survival of the cell. In a new study appearing May 24 in Nature Neuroscience, UCSF researchers have successfully catalogued this effect in the human neuron by separately toggling each of the 20,000 genes in the human genome. In doing so, they've created a technique that can be employed for many different cell types, as well as a database where other researchers using the new technique can contribute similar knowledge, creating a picture of gene function in disease across the entire spectrum of human cells. "This is the key next step in uncovering the mechanisms behind disease genes," said Martin Kampmann, PhD, associate professor, Institute ...

New research from Florida State University shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about the effects of glacial melting in an area that is a major exporter of seafood. "There are surprisingly high levels of mercury in the glacier meltwaters we sampled in southwest Greenland," said FSU postdoctoral fellow Jon Hawkings. "And that's leading us to look now at a whole host of other questions such as how that mercury could potentially get into the food chain." The study was published today in Nature Geoscience. Initially, researchers sampled waters from three different ...

TALLAHASSEE, Fla. -- New research shows that concentrations of the toxic element mercury in rivers and fjords connected to the Greenland Ice Sheet are comparable to rivers in industrial China, an unexpected finding that is raising questions about the effects of glacial melting in an area that is a major exporter of seafood. "There are surprisingly high levels of mercury in the glacier meltwaters we sampled in southwest Greenland," said Jon Hawkings, a postdoctoral researcher at Florida State University and and the German Research Centre for Geosciences. ...

Plants grown in soil are colonized by diverse microbes collectively known as the plant microbiota, which is essential for optimal plant growth in nature and protects the plant host from the harmful effects of pathogenic microorganisms and insects. However, in the face of an advanced plant immune system that has evolved to recognize microbial associated-molecular patterns (MAMPs) - conserved molecules within a microbial class - and mount an immune response, it is unknown how soil-dwelling microbes are able to colonize plant roots. Now, MPIPZ researchers led by Paul Schulze-Lefert, and researchers from the University of Carolina led by Jeffery L. Dangl show, in two separate studies, that a subset ...

Brain tumor cells with a certain common mutation reprogram invading immune cells. This leads to the paralysis of the body's immune defense against the tumor in the brain. Researchers from Heidelberg, Mannheim, and Freiburg discovered this mechanism and at the same time identified a way of reactivating the paralyzed immune system to fight the tumor. These results confirm that therapeutic vaccines or immunotherapies are more effective against brain tumors if active substances are simultaneously used to promote the suppressed immune system. Diffuse gliomas are usually incurable brain tumors that spread in the brain and are difficult to completely remove by surgery. Chemotherapy and radiotherapy often only have a limited ...

Scientists and clinicians at UCL and Great Ormond Street Hospital (GOSH) studying the effectiveness of CAR T-cell therapies in children with leukaemia, have discovered a small sub-set of T-cells that are likely to play a key role in whether the treatment is successful. Researchers say 'stem cell memory T-cells' appear critical in both destroying the cancer at the outset and for long term immune surveillance and exploiting this quality could improve the design and performance of CAR T therapies. Explaining the study, published in Nature Cancer, lead author Dr Luca Biasco (UCL Great Ormond Street Institute of Child Health), said: "During clinical trials we have seen some very encouraging results in young patients with leukaemia, however it's still not clear why CAR T-cells continue ...

A population of bridled nailtail wallabies in Queensland has been brought back from the brink of extinction after conservation scientists led by UNSW Sydney successfully trialled an intervention technique never before used on land-based mammals. Using a method known as 'headstarting', the researchers rounded up bridled nailtail wallabies under a certain size and placed them within a protected area where they could live until adulthood without the threat of their main predators - feral cats - before being released back into the wild. In an article published today in Current Biology, the scientists describe how they decided on the strategy to protect only the juvenile wallabies from feral cats in Avocet Nature Refuge, ...

Knowledge systems outside of those sanctioned by Western universities have often been marginalised or simply not engaged with in many science disciplines, but there are multiple examples where Western scientists have claimed discoveries for knowledge that resident experts already knew and shared. This demonstrates not a lack of knowledge itself but rather that, for many scientists raised in Western society, little education concerning histories of systemic oppression has been by design. Western scientific knowledge has also been used to justify social and environmental control, including dispossessing colonised people of their ...

Our brain is usually well protected from uncontrolled influx of molecules from the periphery thanks to the blood-brain barrier, a physical seal of cells lining the blood vessel walls. The hypothalamus, however, is a notable exception to this rule. Characterized by "leaky" blood vessels, this region, located at the base of the brain, is exposed to a variety of circulating bioactive molecules. This anatomical feature also determines its function as a rheostat involved in the coordination of energy sensing and feeding behavior. Several hormones and nutrients are known to influence the feeding neurocircuit in the hypothalamus. Classic examples are leptin and insulin, both involved in informing the brain of available energy. In the last years, the ...

Skoltech scientists and their colleagues from Germany and the United States have analyzed the metabolomes of humans, chimpanzees, and macaques in muscle, kidney, and three different brain regions. The team discovered that the modern human genome undergoes mutation which makes the adenylosuccinate lyase enzyme less stable, leading to a decrease in purine synthesis. This mutation did not occur in Neanderthals, so the scientists believe that it affected metabolism in brain tissues and thereby strongly contributed to modern humans evolving into a separate species. The research was published in the journal eLife. The predecessors of modern humans split from their closest evolutionary relatives, Neanderthals and Denisovans, about 600,000 ...

A new low-cost and sustainable technique would boost the possibilities for hospitals and clinics to deliver therapeutics with aerogels, a foam-like material now found in such high-tech applications as insulation for spacesuits and breathable plasters. With the help of an ordinary kitchen freezer, this newest form of aerogel was made from all natural ingredients, including plant cellulose and algae, says Jowan Rostami, a researcher in fibre technology at KTH Royal Institute of Technology in Stockholm. Rostami says that the aerogel's low density and favorable surface area make it ideal for a wide range of uses, ...

CHAMPAIGN, Ill. -- Scientists report that it is possible to detect and predict heat damage in crops by measuring the fluorescent light signature of plant leaves experiencing heat stress. If collected via satellite, this fluorescent signal could support widespread monitoring of growth and crop yield under the heat stress of climate change, the researchers say. Their study measures sun-induced chlorophyll fluorescence - or SIF - to monitor a plant's photosynthetic health and establish a connection between heat stress and crop yield. The findings are published in the journal Global Change Biology. Sun-induced chlorophyll fluorescence occurs when a portion of photosynthetic energy, in the form of near-infrared light, is emitted from plant leaves, the researchers said. "There ...

Fifty-six million years ago, as the Earth's climate warmed by five to eight degrees C, new land mammals evolved, tropical forests expanded, giant insects and reptiles appeared and the chemistry of the ocean changed. Through it all, bacteria in the ocean in what is now New Jersey kept a record of the changes in their environment through forming tiny magnetic particles. Now, those particles and their record are all that's left of these microorganisms. Thanks to new research tools, that record is finally being read. In research published in the journal Paleoceanography and Paleoclimatology, researchers including University of Utah doctoral student Courtney Wagner and associate professor Peter Lippert report the climate clues that can ...

By making a game out of getting their daily steps, new research points to the possibility that people with diabetes could be nudged toward increasing their physical activity, with changes lasting for a full year. Since many now use apps or other digital means to manage their diabetes, this program - which utilized tools like wearable step counters and electronic scales with personalized goals - could potentially be integrated to help individuals achieve greater success. Findings from the study, conducted by a team from the Perelman School of Medicine ...

Carbon is vital to the existence of all living organisms, since it forms the basis of all organic molecules that, in turn, form the basis of all living beings. While that alone is pretty impressive, it has recently found surprisingly novel applications in disciplines such as aerospace and civil engineering with the development of carbon fibers that are stronger, stiffer, and lighter than steel. Consequently, carbon fibers have taken over steel in high-performance products like aircrafts, racecars, and sports equipment. Carbon fibers are usually combined with other materials to form ...