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כתבות אחרונות מאתר 'Phys'
Phys

Dominant fish face higher microplastic risk than subordinates in social groups‎

Fish who display dominant traits are more at risk of consuming microplastic pollution than others in their social group, according to new research. The study, led by the University of Glasgow and published in Proceedings of the Royal Society B: Biological Sciences, details the different levels of risk microplastic pollution poses to aquatic life, with some fish in hierarchical social groups affected more than others.

23:22
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Phys

Contemporary archaeologists dig into the present—bringing those so often forgotten into the light‎

The classic image of an archaeologist is of someone unearthing a potsherd in Pompeii or opening a Viking grave to better understand the distant past. Yet the same methods can also be applied to our own time—a field known as contemporary archaeology.

23:22
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Phys

Urban aerosols grow faster in polluted air, sharpening climate model gaps‎

Aerosols and clouds play a key role in Earth's climate budget. However, the extent to which they reflect solar energy depends heavily on how much water the particles can absorb. This so-called hygroscopicity has so far been represented in a simplified manner in climate models. An international research team led by the Leibniz Institute for Tropospheric Research (TROPOS) has now demonstrated through a global study that the models are not precise enough, particularly in urban regions.

23:03
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Phys

15 Australian companies switched to a four‑day work week. It went surprisingly well‎

In a 1930 essay, British economist John Maynard Keynes predicted that in 100 years time, technological advances would have displaced so much human labor that people would be working 15-hour weeks—if they worked at all.

23:03
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Phys

Neptune's mysterious moon Nereid may be original survivor of Triton's chaotic arrival‎

Neptune's far-flung moon Nereid may be the last of the planet's original companions that managed to survive a cosmic crash, scientists reported Wednesday.

22:57
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Phys

The complete evolution of spin glass from order to chaos‎

How come our universe is full of disorder, when all elementary particles appear to follow strictly ordered laws of physics? And are there organizing principles behind disorder and apparent chaos?

22:47
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Phys

Scientists solve 50-year mystery of plant immunity by unlocking debneyol's blueprint‎

In a silent war that has raged for millions of years, plants have evolved a sophisticated chemical arsenal to fight back against invading pathogens. Now, a team of researchers from Peking University and Tsinghua University has finally mapped out the blueprints for one of nature's most effective deterrents, solving a biological puzzle that has baffled scientists for nearly half a century.

22:44
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Phys

Showing empathy can make you more attractive, even when you frown‎

People who smile empathically at someone's happiness or frown at their suffering become more attractive. Conversely, smiling out of schadenfreude does not make someone any less attractive. Roujia Feng will defend her Ph.D. thesis on May 26, based on research into the social consequences of expressing (counter)empathic emotions.

22:44
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Phys

Reusable tea cups have hidden thresholds for achieving environmental sustainability‎

By combining demand-driven life cycle assessment with a multi-objective optimization framework, researchers identified potential optimal solutions for reusable bubble tea packaging systems under actual market demand conditions. The results show that material selection and low reuse frequency dominate both economic costs and environmental impacts, while durability and logistics become increasingly important as reuse frequency increases.

22:25
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Phys

Fragility found in a high value shark population‎

The vulnerability of a shark population to losing even small numbers to fishing has been highlighted by researchers from the University of Chester and partners in the Philippines using a remote stereo camera system. The team has found that pelagic thresher sharks in the Central Visayan Sea would be vulnerable to a fishing mortality rate of 5.3% each year, and that the removal of 15 to 18 females would result in a potentially catastrophic decline in the population.

22:25
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