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August 28, 2021

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Embryonic development in slow motion

Posted: 27 Aug 2021 09:15 AM PDT

Roe deer are among the few mammals whose embryos go into a particularly long period of dormancy. Using modern molecular methods, researchers have shown for the first time what exactly happens in the embryo during this phase. They have identified signals that control the embryo`s awakening.

Seabed recovers more quickly following extreme storms than from the impacts of bottom-towed fishing

Posted: 27 Aug 2021 09:14 AM PDT

Academics have been monitoring the Lyme Bay Marine Protected area using underwater cameras and other techniques since 2008, but this is the first known study to examine an MPA's response and resilience in the face of extreme storms.

Bacterial bloom as the Earth thawed: Photosynthetic organisms during the Snowball Earth

Posted: 27 Aug 2021 09:14 AM PDT

Around 650 million years ago, the Earth entered into the Marinoan glaciation that saw the entire planet freeze. The 'Snowball Earth' impeded the evolution of life. But as it warmed, biotic life began to flourish. A research team has now analyzed rock samples from China to tell us more about this transition.

How disorderly young galaxies grow up and mature

Posted: 27 Aug 2021 09:14 AM PDT

Using a supercomputer simulation, a research team has succeeded in following the development of a galaxy over a span of 13.8 billion years. The study shows how, due to interstellar frontal collisions, young and chaotic galaxies over time mature into spiral galaxies such as the Milky Way.

Simple safety measures reduce musical COVID-19 transmission

Posted: 27 Aug 2021 09:14 AM PDT

Researchers have found that while playing musical instruments can emit the same levels of potentially COVID-laden airborne particles as singing, simple safety measures, such as masking instruments, social distancing and implementing time limits, significantly reduce this risk.

COVID-19 in children with cancer: Severe disease and disrupted treatment

Posted: 27 Aug 2021 05:24 AM PDT

Scientists from St. Jude Children's Research Hospital and the International Society of Paediatric Oncology report results from the Global Registry of COVID-19 and Childhood Cancer.

Symptomatic COVID patients are more contagious, study finds

Posted: 26 Aug 2021 02:02 PM PDT

Individuals with COVID-19 are most likely to spread the virus to close contacts two days before the onset of symptoms to three days after symptoms appear, and the risk of transmission is highest when patients had mild or moderate disease severity, according to a new study.

Study confirms virus variants reduce protection against COVID-19

Posted: 26 Aug 2021 02:02 PM PDT

A laboratory study finds that blood serum drawn from people previously vaccinated or naturally infected show 'significantly reduced' defense against two variants of the novel coronavirus SARS-CoV-2. Researchers said that their findings emphasize the importance of vaccinations combined with maintaining public health measures to cut off the spread of the SARS-CoV-2 virus.

The risk of developing a disease linked to genetics tends to decrease with age

Posted: 26 Aug 2021 02:01 PM PDT

People often get sicker as they grow older, but new research finds that the impact of a person's genes on their risk of getting sick actually wanes with age.

Discovery of two-phase superconductivity in CeRh2As2

Posted: 26 Aug 2021 02:01 PM PDT

The phenomenon of superconductivity, providing current transmission without dissipation and a host of unique magnetic properties arising from macroscopic quantum coherence, was first discovered over a century ago. It was not understood until 1957, after which it quickly became clear that superconductors could in principle exist with a wide variety of the fundamental characteristic often referred to as the order parameter. Until the late 1970's, however, all superconductors found experimentally had the same class of order parameter. Since then many aspects of the expected variety of order parameters have been discovered, but one surprising fact remained.

Ending prices with '.99' can backfire on sellers

Posted: 26 Aug 2021 02:01 PM PDT

Setting a price just below a round number ($39.99 instead of $40) may lead consumers into thinking a product is less expensive than it really is -- but it can sometimes backfire on sellers, a new study shows.

Environmental pollution may contribute to racial/ethnic disparities In Alzheimer’s disease risk

Posted: 26 Aug 2021 02:01 PM PDT

Fine particle pollution may be one reason why Black women have double the risk of developing Alzheimer's than white women, suggests new research. Data shows that older people are more likely to develop dementia if they live in locations with high PM2.5, and African American populations are more likely to live in neighborhoods near polluting facilities. Even when controlling for other risk factors, this study found that Black women still had roughly two times greater a risk of developing Alzheimer's disease than white women, and it also found that they had higher exposure to PM2.5.

What's the cost of self-control? New study tabulates the bill

Posted: 26 Aug 2021 02:01 PM PDT

A team of researchers has identified measures we take in order to skirt having to exert self-control in our daily lives -- findings that offer new insights into what motivates human behavior.

Comparing the pathogen numbers in backyard and commercial composts

Posted: 26 Aug 2021 02:01 PM PDT

In a new study, researchers have measured the number of pathogens and antibiotic resistance genes in backyard and commercial compost.

A solid favor for researchers: A new way to investigate the electric double layer effect

Posted: 26 Aug 2021 02:01 PM PDT

All-solid-state batteries are expected to replace conventional batteries with a liquid electrolyte thanks to their improved safety, durability, and capacity. However, the electric double layer (EDL) effect is a phenomenon that is suspected to be a hindrance to battery performance and is difficult to measure. To tackle this issue, scientists have developed a new methodology to explore the EDL using diamond-based field-effect transistors, paving the way to better solid-state ionic devices and batteries.

COVID-19 vaccine potency dips, but remains effective disease deterrent, study finds

Posted: 26 Aug 2021 02:01 PM PDT

COVID-19 vaccines remain effective, but their potency has diminished in recent months, according to a nationwide U.S. study at eight sites.

For copepods, there is no free lunch when coping with climate change

Posted: 26 Aug 2021 10:05 AM PDT

The world's oceans are becoming increasingly stressful places for marine life, and experts are working to understand what this means for the future. From rising temperatures; to acidification as more carbon enters the waters; to changes in the currents; the challenges are multifaceted, making experiments and projections difficult. Copepods are small marine animals that are abundant, widely dispersed, and serve as major structural components of the ocean's food web. A team of scientists from the University of Connecticut, Jinan University in China, and the University of Vermont have found that a species of copepod called Acartia tonsa can cope with climate change, but at a price. Their research was published today in Nature Climate Change.

Using yeast to create alternative petrochemical processes

Posted: 26 Aug 2021 10:05 AM PDT

As climate change continues to do more damage to our planet, scientists are working to find more efficient and cleaner ways to power the earth. One appealing alternative to common petrochemical processes that generate significant greenhouse gases and other waste products could come from biological systems. Recent work has led to advances in understanding of biochemical pathways and increased rates of chemical production by biological systems.

When humans disturb marine mammals, it’s hard to know the long-term impact

Posted: 26 Aug 2021 10:05 AM PDT

From seismic surveys and Navy sonar to fisheries and shipping, many human activities in the ocean environment cause short-term changes in the behaviors of marine mammals. A longstanding challenge for scientists and regulatory agencies alike has been to understand the biological significance of those changes in terms of their overall impact on affected populations of animals. A new study provides a comprehensive framework for conducting this type of assessment.

Drought and climate change shift tree disease in Sierra Nevada

Posted: 26 Aug 2021 08:17 AM PDT

A study provides some of the first evidence that climate change and drought are shifting the range of infectious disease in forests suffering from white pine blister rust disease.

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