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Capturing 40 years of climate change for an endangered Montana prairie

Over 40 years of monitoring, an endangered bunchgrass prairie became hotter, drier and more susceptible to fire annually -- but dramatic seasonal changes (not annual climate trends) seem to be driving the biggest changes in plant production, composition, and

Covering faces around kids won't mask emotions

The proliferation of face coverings to keep COVID-19 in check isn't keeping kids from understanding facial expressions, according to a new study.

Similar factors cause health disparities in cancer, COVID-19

The same societal factors that have caused worse outcomes in cancer for some minority populations are now causing disparities in COVID outcomes. Potential policy changes could help improve outcomes for both diseases.

Conifers can be green because of a photosynthetic short-cut

How can conifers that are used, for example, as Christmas trees, keep their green needles over the boreal winter when most trees shed their leaves? Science has not provided a good answer to this question but now an international team of scientists has deciphe

Perfect transmission through barrier using sound

A research team has for the first time experimentally proved a century old quantum theory that relativistic particles can pass through a barrier with 100% transmission.

Disposable surgical masks best for being heard clearly when speaking, study finds

Researchers have published the results of a new study evaluating the acoustic effects of face masks on speech. The team tested medical masks, disposable surgical masks, masks with clear plastic windows around the mouth, and homemade and store-bought cloth mas

How our brains track where we and others go

A new study reveals how your brain navigates places and monitors someone else in the same location. The findings suggest that our brains generate a common code to mark where other people are in relation to ourselves.

Secondary bloodstream infections associated with severe COVID-19

People with severe COVID-19 and a secondary blood infection were significantly sicker upon hospital admission, had longer hospital stays and poorer outcomes, according to a new study.

New mammogram measures of breast cancer risk could revolutionize screening

World-first techniques for predicting breast cancer risk from mammograms could revolutionize breast screening by allowing it to be tailored to women at minimal extra cost.

In shaky times, focus on past successes, if overly anxious, depressed

The more chaotic things get, the harder it is for people with clinical anxiety and/or depression to make sound decisions and to learn from their mistakes. On a positive note, overly anxious and depressed people's judgment can improve if they focus on what the

Chemists synthesize 'flat' silicon compounds

Chemists have synthesized extremely unusual compounds. Their central building block is a silicon atom. Different from usual, however, is the arrangement of the four bonding partners of the atom, which are not in the form of a tetrahedron around it, but flat l

Mouse-controlled mouse helps researchers understand intentional control

Researchers have devised a brain machine interface (BMI) that allows mice to learn to guide a cursor using only their brain activity. By monitoring this mouse-controlled mouse moving to a target location to receive a reward, the researchers were able to stud

Birds: Competition for mates leads to a deeper voice than expected based on size

Competition for mates leads to a deeper voice than expected based on size.

Model predicts where ticks, Lyme disease will appear next in Midwest states

By drawing from decades of studies, scientists created a timeline marking the arrival of black-legged ticks, also known as deer ticks, in hundreds of counties across 10 Midwestern states. They used these data - along with an analysis of county-level landscap

Fluvial mapping of Mars

It took fifteen years of imaging and nearly three years of stitching the pieces together to create the largest image ever made, the 8-trillion-pixel mosaic of Mars' surface. Now, the first study to utilize the image in its entirety provides unprecedented insi

New drug combination could improve glucose and weight control in diabetes

Scientists have shown that adding an experimental cancer drug to a widely used diabetes treatment improves blood glucose control and weight loss in mice, according to a new study.

A blazar in the early universe

Observations with the continent-wide Very Long Baseline Array (VLBA) reveal previously unseen details in a jet of material ejected from the core of a galaxy seen as it was when the universe was only about 7% of its current age.

A new species of mammal may have been found in Africa's montane forests

A research team has discovered a tree hyrax in the Taita Hills, Kenya, which may belong to a species previously unknown to science.

Surgery may offer survival advantage in certain metastatic breast cancers

Surgery, in addition to treatments like chemotherapy and radiation therapy, may increase the length of survival for metastatic breast cancer patients, according to researchers.

Anti-diarrhea drug drives cancer cells to cell death

In cell culture, loperamide, a drug commonly used against diarrhea, proves effective against glioblastoma cells. A research team has now unraveled the drug's mechanisms of action of cell death induction and - in doing so - has shown how this compound could he

Key clues to understanding the death of stars

New research has found that by studying all three 'flavors' involved in a supernova, they've unlocked more clues as to how and why stars die.

Bumblebees lacking high-quality habitat have higher pathogen loads

Bumblebees found in low-quality landscapes -- characterized by a relative lack of spring flowers and quality nesting habitat -- had higher levels of disease pathogens, as did bumblebees in areas with higher numbers of managed honey bee hives, according to sci

Frozen: Cutting-edge technology reveals structures within cells

Temperatures of minus 196 degrees Celsius enable high-resolution imaging of the cell's interior. Researchers are thus able to show for the first time how the active form of a protein complex plays critical roles in cell motility and other important biologica

A groggy climate giant: Subsea permafrost is still waking up after 12,000 years

After the Last Glacial Maximum some 14,000 years ago, rising temperature melted glaciers and ice caps worldwide. Over thousands of years, sea levels rose by more than 400 feet (130 meters).

Antibiotics for C-sections effective after umbilical cord clamped

Antibiotics for cesarean section births are just as effective when they're given after the umbilical cord is clamped as before clamping - the current practice - and could benefit newborns' developing microbiomes, according to new research. The study, by far t

Biotech cotton key to eliminating devastating pest from US and Mexico

A collaboration between the University of Arizona, cotton growers, and government and industry partners eradicated the pink bollworm -- one of the world's most damaging crop pests -- from the United States and Mexico.

When light and atoms share a common vibe

Scientists demonstrate a state of vibration that exists simultaneously at two different times. They evidence this quantum superposition by measuring the strongest class of quantum correlations between light beams that interact with the vibration.

Prostate cancer regulator plays role in COVID-19, providing a promising treatment lead

Clinical trials underway are testing whether drugs that target the androgen receptor -- successful in controlling prostate cancer -- could also work against the coronavirus.

Traditional model for disease spread may not work in COVID-19

A mathematical model that can help project the contagiousness and spread of infectious diseases like the seasonal flu may not be the best way to predict the continuing spread of the novel coronavirus, especially during lockdowns that alter the normal mix of t

Learning from three centuries of smallpox epidemics in London, UK

The current COVID-19 pandemic has caused a surge of interest in the study of infectious disease transmission, and how control measures could change the course of the pandemic. New research examines the history of recorded smallpox epidemics in London.

New 3D maps reveal inner workings of immune cell gene expression

The COVID-19 pandemic has highlighted how our small genetic differences can have a tremendous effect on how our bodies respond to disease. Researchers have created 3D maps of how enhancer sequences and genes interact in several types of immune cells. Their ne

Ancient wolf pup mummy in Yukon permafrost from 57,000 years ago

While water blasting at a wall of frozen mud in Yukon, Canada, a gold miner made an extraordinary discovery: a perfectly preserved wolf pup that had been locked in permafrost for 57,000 years. The remarkable condition of the pup, named Zhùr by the local Tr'o

The mechanics of the immune system

Not only chemistry plays a role in the docking of antigens to the T-cell; micromechanical effects are important too. Submicrometer structures on the cell surface act like microscopic tension springs. Tiny forces that occur as a result are likely to be of grea

Big step with small whirls

Skyrmions are small magnetic objects that could revolutionize the data storage industry and also enable new computer architectures. However, there are a number of challenges that need to be overcome. A team of researchers has succeeded for the first time in p

Looking for dark matter near neutron stars with radio telescopes

In 1983, theoretical physicist Pierre Sikivie found that axions have another remarkable property: In the presence of an electromagnetic field, they should sometimes spontaneously convert to easily detectable photons. What was once thought to be completely und

Meteoric evidence for a previously unknown asteroid

A team of scientists has identified a potentially new meteorite parent asteroid by studying a small shard of a meteorite that arrived on Earth a dozen years ago. The composition of a piece of the meteorite Almahata Sitta (AhS) indicates that its parent body w

Current food production systems could mean far-reaching habitat loss

The global food system could drive rapid and widespread biodiversity loss if not changed, new research has found.

Goldilocks and the three quantum dots: Just right for peak solar panel performance

Maximizing the efficiency of renewable energy technology is dependent on creating nanoparticles with ideal dimensions and density, new simulations have shown.

Climate warming linked to tree leaf unfolding and flowering growing apart

Climate warming is linked to a widening interval between leaf unfolding and flowering in European trees, with implications for tree fitness and the wider environment, according to new research.
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