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כתבות אחרונות מאתר 'Phys'
Phys

Nanoparticles boost delivery of lung cancer drugs 30-fold‎

Lung cancer remains one of the world's deadliest cancers, yet despite decades of effort to develop new drugs, many fail because they don't stay in the body long enough to be effective or because they damage healthy organs. Now, Adelaide University researchers have developed a novel nanoparticle "delivery vehicle" that precisely targets cancer drugs to the lungs while helping to limit harmful side effects—a breakthrough that could reshape how the disease is treated.

16:24
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Phys

The future of agriculture‎

It's a mild early spring morning at the historic Cottonwood Field Station in western South Dakota, and a herd of 150 Angus steers are scheduled to move to a new pasture rotation. Moving cattle can be tricky and often requires some extra help, electrical fencing and quite a bit of time. But today, there are no extra ranchers, no gates swinging open and no temporary fences in place.

16:24
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Phys

Dormant black hole revives in under three years, brightening 10-fold in nearby galaxy‎

Astronomers monitoring a nearby active galaxy for six years have watched its supermassive black hole dramatically wake up, brightening by a factor of 10 across ultraviolet and X-ray wavelengths. The paper outlining the study was posted to the preprint server arXiv on May 18.

16:10
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Phys

New mantises planking their way to urban dominance‎

A team of scientists have discovered and named three new "leaf-planking" praying mantis species and recorded another mantis species turning up far from its assumed habitat. JCU Ph.D. candidate Matthew Connors recently discovered and named three new Snake Mantis species from the Kongobatha genus (K.serpens, K.spinosistyla and K.rufilinea), publishing his detailed observations of each species in the journal Zootaxa.

15:28
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Phys

Astrobiology's looming statistical crisis‎

Multi-billion-dollar space telescope programs aren't only feats of aerospace engineering. They also feature "lies, damn lies, and statistics." Or at least statistics. They definitely feature those, as does all good observational astronomy. The problem with statistics is, in order to get a clear definitive answer, you need lots of samples. And, to put it mildly, it's hard to find lots of samples of planets with alien life on them. And even harder to prove that the signals we think are caused by alien life aren't caused by some other non-biological process. Or at least that's the theory underpinning a new paper available on the arXiv preprint server from David Kipping of Columbia University (and Cool Worlds YouTube fame).

15:28
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Phys

Health-related ballot measures more likely to pass‎

As voters are increasingly asked to decide complex health policy questions at the ballot box, new research from the Brown School at Washington University in St. Louis finds that health care-related ballot measures draw more voters to the polls and are more likely to pass than other initiatives—but they're also especially sensitive to opposition spending by special-interest groups.

15:09
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Phys

New tech enables scientists to see emperor penguins in darkness‎

Research led by Professor Michelle LaRue from the School of Earth and Environment at Te Whare Wānanga o Waitaha | University of Canterbury (UC) published in Remote Sensing in Ecology and Conservation shows that high-resolution Synthetic Aperture Radar (SAR) imagery can track emperor penguins through the Antarctic winter, opening a new way to monitor an endangered species during a critical stage of breeding.

14:52
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Phys

Q&A: Most biology education guidelines lack any connection to society, researchers explain why that's a problem‎

Is it a doctor's job to get the best outcomes for their patients or to tell the truth? What happens when these two things are not aligned? These are questions that University of Washington students have to wrangle with in Biol 180: Introductory Biology. The goal, says Elli Theobald, UW assistant professor of biology, is to have students experience a more nuanced side of biology. There is not always one right answer, and issues of power and relationships often come into play.

14:35
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Phys

Molecular glasses solve long-standing Arrhenius paradox‎

Glasses are non-crystalline but solid states of matter in which molecules and atoms are not arranged into a regular crystal lattice, but rather in a disordered pattern. Glassy materials are widely used in various settings, for instance, in the synthesis of pharmaceuticals and the development of electronics or optical devices.

14:20
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Phys

Survey shows little shift in Americans' views on political violence‎

A large, nationally representative survey of U.S. adults finds that support for, and willingness to engage in, political violence remained largely stable from mid-2024 to mid-2025, despite a highly contentious national election and ongoing political polarization, according to a study published in Injury Epidemiology.

14:20
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