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כתבות אחרונות מאתר 'Phys'
Phys

Jupiter uses a surprisingly complex system to fend off particles from the sun‎

A University of Iowa-led research team has reported in a new study the most detailed observations to date of the bow shock at Jupiter, our solar system's gas giant. The findings from NASA's Juno mission reveal key differences between Jupiter's bow shock and Earth's. They also may lead to a better understanding of the physics of how shocks function in even more powerful energy releases, such as those from dying stars. The research is published in Nature Communications.

01:45
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Phys

Centenarian sea cucumbers at risk of overfishing‎

Marine scientists have been amazed to discover an endangered sea cucumber can live for decades, with some animals living more than 100 years, in a first-of-its-kind genetic mark-recapture study. Australian Institute of Marine Science (AIMS) Senior Principal Research Scientist Dr. Sven Uthicke said the findings suggested black teatfish sea cucumber populations recover much more slowly than previously thought and that this had implications for commercial fishery catch limits.

01:45
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Phys

A new way to see inside a hurricane‎

Researchers at The University of Texas at Arlington have created a mathematical model to identify and analyze vortices, the rotating structures at the heart of hurricanes. The National Oceanic and Atmospheric Administration is now using the model to monitor hurricane development worldwide.

01:25
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Phys

Archaeologists uncover centuries-old mystery of Tampa Bay's secret community of migrant potters‎

About 100 years ago, archaeologists unearthing pottery sherds in Tampa Bay found something unexpected. Some of the fragments they recovered had designs nearly identical to decorated pottery found hundreds of miles to the north. At least on the surface, the pottery appeared to be Mississippian, a culture that emerged more than 1,000 years ago and brought social, economic and political transformation across southeastern North America. For years, archaeologists excluded peninsular Florida from maps of its range, but the artifacts suggested a different story.

01:25
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Phys

From spider webs to mosaics: How nanosheets of graphene oxide control the patterns left by a drying droplet‎

A drop of coffee on a tabletop often leaves a dark ring behind. This everyday mark is a reminder that a drying droplet is not passive: As water evaporates, it can transport the particles suspended inside it toward the edge. Scientists call this the coffee-ring effect. For inkjet printing and surface coatings, however, a ring is often exactly what engineers do not want. They need the material to land in a controlled, predictable pattern.

01:04
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Phys

Dads of daughters may be more attentive partners‎

Children can be hard on a relationship, but some kids can bring parents closer together. Research from Rutgers University has found that often, it is girls who inspire closer parental bonds. In a study published in Personality and Individual Differences, scholars at Rutgers Business School's Center for Women in Business report that fathers of daughters show higher levels of attachment, commitment, trust and intimacy toward the child's mother than fathers of sons.

01:04
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Phys

New study reveals gaps in bison parasite management‎

Gastrointestinal parasites can cause serious health problems in North American bison, but the drugs producers rely on to control them can become less effective when used too frequently or without knowing which animals actually need treatment.

00:48
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Phys

Two new large stick insect species discovered in Australia's backyards and rainforests‎

Insect "detectives" have discovered two new types of large stick insects, showing scientists are still uncovering new species in some of Australia's most well-studied landscapes. Researchers at the University of Sydney have revised the Australian representatives of the stick insect genus Anchiale, identifying two new species, one with unique "lidded" eggs. They also reinstated a third species that had been hidden in plain sight for decades.

00:48
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Phys

Sequencing genomes from museum collections could transform scientific inquiry‎

Natural history collections around the world collectively hold more than 1 billion specimens, spanning a wide variety of times and places. These include species that are extinct or come from areas now transformed beyond recognition, providing data that cannot be found anywhere else.

00:21
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Phys

New screening method finds rare DNA gyrase poison for future antibiotics‎

The goal was to build a faster way to search for new antibiotics. The search turned up something unexpected. FIU biochemistry professor Fenfei Leng and a group of researchers set out to develop the first high-throughput screening method specifically designed to identify compounds that can poison bacterial DNA gyrase, an enzyme that bacteria need to survive.

00:21
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