Science

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 2018-12-10 21:31 

Phys.org

New bug prompts earlier end to Google+ social network...

Google said Monday it will close the consumer version of its online social network sooner than originally planned due to the discovery of a new software bug....

 2018-12-10 21:30 

Phys.org

Rapid genetic evolution linked to lighter skin pigmentation in a southern African population...

Populations of indigenous people in southern Africa carry a gene that causes lighter skin, and scientists have now identified the rapid evolution of this gene in recent human history....

 2018-12-10 21:23 

Phys.org

OSIRIS-REx discovers water on asteroid, confirms Bennu as excellent mission target...

From August through early December, the OSIRIS-REx spacecraft aimed three of its science instruments toward Bennu and began making the mission's first observations of the asteroid. During this period, the spacecraft traveled the last 1.4 million miles...

 2018-12-10 21:19 

Phys.org

Sprayable gel could help the body fight off cancer after surgery...

Many people who are diagnosed with cancer will undergo some type of surgery to treat their disease—almost 95 percent of people with early-diagnosed breast cancer will require surgery and it's often the first line of treatment for people with bra...

 2018-12-10 20:00 

Phys.org

Bioenergy crops could be as bad for biodiversity as climate change...

A large scale expansion in bioenergy crop production could be just as detrimental to biodiversity as climate change itself, according to new research....

 2018-12-10 20:00 

Phys.org

'Dropout' rate for academic scientists has risen sharply in past 50 years, study finds...

Half of the people pursuing careers as scientists at higher education institutions will drop out of the field after five years, according to a new analysis from researchers at Indiana University Bloomington....

 2018-12-10 20:00 

Phys.org

Ocean fertilization by unusual microbes extends to frigid waters of Arctic Ocean...

Microbes that provide natural fertilizer to the oceans by "fixing" nitrogen from the atmosphere into a form useable by other organisms were once thought to be limited to warm tropical and subtropical waters. Now, however, researchers have document...

 2018-12-10 20:00 

Phys.org

Humans may be reversing the climate clock, by 50 million years...

Our future on Earth may also be our past. In a study published Monday (Dec. 10, 2018) in the Proceedings of the National Academy of Sciences, researchers show that humans are reversing a long-term cooling trend tracing back at least 50 million years. And ...

 2018-12-10 19:00 

Phys.org

Smelling the forest not the trees: Why animals are better at sniffing complex smells...

Animals are much better at smelling a complex "soup" of odorants rather than a single pure ingredient, a new study by the University of Sussex has revealed....

 2018-12-10 17:43 

Phys.org

Researchers image atomic structure of important immune regulator...

A new study by investigators from Brigham and Women's Hospital provides a biophysical and structural assessment of a critical immune regulating protein called human T-cell immunoglobulin and mucin domain containing protein-3 (hTIM-3). Understanding th...

 2018-12-10 16:00 

Phys.org

Topological matters: Toward a new kind of transistor...

Billions of tiny transistors supply the processing power in modern smartphones, controlling the flow of electrons with rapid on-and-off switching....

 2018-12-10 16:00 

Phys.org

Team finds evidence for carbon-rich surface on Ceres...

A team led by Southwest Research Institute has concluded that the surface of dwarf planet Ceres is rich in organic matter. Data from NASA's Dawn spacecraft indicate that Ceres's surface may contain several times the concentration of carbon than is...

 2018-12-10 16:00 

Phys.org

How catnip makes the chemical that causes cats to go crazy...

Researchers at John Innes Centre have shed light on how catnip—also known as catmint—produces the chemical that sends cats into a state of wanton abandon....

 2018-12-10 16:00 

Phys.org

Physicists create tiny sensors to assist in cancer detection...

A physicist in the College of Arts and Sciences at Syracuse University hopes to improve cancer detection with a new and novel class of nanomaterials....

 2018-12-10 16:00 

Phys.org

Solar activity research provides insight into sun's past, future...

Andrs Muoz-Jaramillo of Southwest Research Institute and Jos Manuel Vaquero of the University of Extremadura have developed a new technique for looking at historic solar data to distinguish trustworthy observations from those that should be used with care...

 2018-12-10 16:00 

Phys.org

A glimmer of hope for the world's coral reefs...

The future of the world's coral reefs is uncertain, as the impact of global heating continues to escalate. However, according to a study published today in Nature Climate Change, the response of the Great Barrier Reef to extreme temperatures in 2017 w...

 2018-12-10 16:00 

Phys.org

Houses in hurricane strike zones are built back bigger...

A study of hurricane-hit areas of the United States has revealed a trend of larger homes being built to replace smaller ones in the years following a storm....

 2018-12-10 16:00 

Phys.org

Frog sex in the city: Urban tungara frogs are sexier than forest frogs...

By 2050, almost 70 percent of the world's population will live in urban environments, according to the United Nations. But as cities spread, wild animals will also have to adapt. In Nature Ecology and Evolution, researchers working at the Smithsonian ...

 2018-12-10 16:00 

Phys.org

Key players in the marine nitrogen cycle use cyanate and urea...

The ammonia oxidizing archaea, or Thaumarchaeota, are among the most abundant marine microorganisms. Yet, scientists are still discovering which factors allow them to thrive in the ocean. A research team from the Max Planck Institute for Marine Microbiolo...

 2018-12-10 16:00 

Phys.org

Compelling evidence for small drops of perfect fluid...

Nuclear physicists analyzing data from the PHENIX detector at the Relativistic Heavy Ion Collider (RHIC)—a U.S. Department of Energy (DOE) Office of Science user facility for nuclear physics research at Brookhaven National Laboratory—have publ...

 2018-12-10 16:00 

Phys.org

Strep bacteria compete for 'ownership' of human tissue...

A well-accepted principle in the animal kingdom—from wasps to deer—is that creatures already occupying a habitat nearly always prevail over competitors from the same species that arrive later. Such infighting for the same territory may be deem...

 2018-12-10 15:50 

Phys.org

NASA's Voyager 2 probe enters interstellar space...

For the second time in history, a human-made object has reached the space between the stars. NASA's Voyager 2 probe now has exited the heliosphere the protective bubble of particles and magnetic fields created by the Sun....

 2018-12-10 15:47 

Phys.org

Scientists brew lava and blow it up to better understand volcanoes...

What happens when lava and water meet? Explosive experiments with manmade lava are helping to answer this important question....

 2018-12-10 15:44 

Phys.org

China court bans iPhone sales in patent dispute: Qualcomm...

A Chinese court ordered a ban in the country on iPhone sales in a patent dispute between US chipmaker Qualcomm and Apple, according to a Qualcomm statement Monday....

 2018-12-10 15:42 

Phys.org

New light on blocking Shiga and ricin toxins—And on an iconic biological process...

Min Dong, Ph.D., and his lab are world experts in toxins and how to combat them. They've figured out how Clostridium difficile's most potent toxin gets into cells and zeroed in on the first new botulinum toxin identified since 1969. Now, setting t...

 2018-12-10 15:30 

Phys.org

Ozone depletion increases Antarctic snowfall, partially mitigates ice sheet loss...

Ozone layer depletion has increased snowfall over Antarctica in recent decades, partially mitigating the ongoing loss of the continent's ice sheet mass, new University of Colorado Boulder research finds....

 2018-12-10 15:00 

Phys.org

Life in deep Earth totals 15 to 23 billion tons of carbon—hundreds of times more than humans...

Barely living "zombie" bacteria and other forms of life constitute an immense amount of carbon deep within Earth's subsurface—245 to 385 times greater than the carbon mass of all humans on the surface, according to scientists nearing the...

 2018-12-10 14:30 

Phys.org

Using machine learning to design peptides...

Scientists and engineers have long been interested in synthesizing peptides—chains of amino acids responsible for conducting many functions within cells—to both mimic nature and to perform new activities. A designed peptide, for example, could...

 2018-12-10 14:30 

Phys.org

Nanoglue can make composites several times tougher during dynamic loading...

In a discovery that could pave the way for new materials and applications, materials scientists at Rensselaer Polytechnic Institute have found that oscillating loads at certain frequencies can lead to several-fold increases in the strength of composites w...

 2018-12-10 14:22 

Phys.org

Researchers suggest 'Little Foot' is an entirely new species of early human...

Several teams of researchers have announced that the skeletal remains of a hominin believed to have lived approximately 3.67 million years ago represent a new species of early human. The researchers report that the specimen, known as "Little Foot,"...

 2018-12-10 14:10 

Phys.org

Cataclysmic variable ES Ceti has an accretion disk, study suggests...

Astronomers have conducted spectroscopic observations of the cataclysmic variable ES Ceti, which resulted in uncovering important insights about gas emission from this object. The new findings, presented in a paper published November 29 on the arXiv pre-p...

 2018-12-10 14:10 

Phys.org

Biomimetic strategy leads to strong, recyclable rubber...

Inspired by nature, Chinese scientists have produced a synthetic analogue to vulcanized natural rubber. Their material is just as tough and durable as the original. In the journal Angewandte Chemie, they reveal the secret to their success: short protein c...

 2018-12-10 14:05 

Phys.org

Scientists discover how birds and dinosaurs evolved to dazzle with colourful displays...

Iridescence is responsible for some of the most striking visual displays in the animal kingdom. Now, thanks to a new study of feathers from almost 100 modern bird species, scientists have gained new insights into how this colour diversity evolved....

 2018-12-10 13:56 

Phys.org

South African skeleton shows humans learned to walk upright in the trees...

The analysis of the world's most complete skeleton of an early human ancestor, conducted by a research collaboration involving the University of Liverpool, offers conclusive evidence that human ancestors became efficient upright walkers while they wer...

 2018-12-10 13:50 

Phys.org

Banned toxins passed from mother to young in European dolphins...

Dolphins in the northern Adriatic contain high levels of PCBs highly toxic chemicals banned in the 1970s and 1980s and are passing the pollutant to their young, according to new research led by a marine scientist at the University of St Andrews....

 2018-12-10 12:40 

Phys.org

Custom-made artificial mother-of-pearl...

Natural mother-of-pearl, such as mussels, is one of the hardest, most stable and stiff natural materials. Researchers have always been fascinated by it. The structure of mother-of-pearl is exquisite under the electron microscope; it looks like a miniature...

 2018-12-10 12:33 

Phys.org

How big can snowflakes be?...

How large can snowflakes get? The answer is: pretty darn big....

 2018-12-10 12:32 

Phys.org

Engineers produce smallest 3-D transistor yet...

Researchers from MIT and the University of Colorado have fabricated a 3-D transistor that's less than half the size of today's smallest commercial models. To do so, they developed a novel microfabrication technique that modifies semiconductor mate...

 2018-12-10 12:30 

Phys.org

DNA find: Tiny wallaby the last living link to extinct giant kangaroos...

A QUT-led collaboration with University of Adelaide reveals that Australia's pint-sized banded hare-wallaby is the closest living relative of the giant short-faced kangaroos which roamed the continent for millions of years, but died out about 40,000 y...

 2018-12-10 11:41 

Phys.org

More bioplastics do not necessarily contribute to climate change mitigation...

Bioplastics are often promoted as an environmentally and climate-friendly alternative to conventional petroleum-based plastics. However, a recent study from the University of Bonn suggests that shifting to plant-based plastics could be less positive than ...

 2018-12-10 11:40 

Phys.org

Supercomputers without waste heat...

Generally speaking, magnetism and the lossless flow of electrical current ("superconductivity") are competing phenomena that cannot coexist in the same sample. However, for building supercomputers, synergetically combining both states comes with m...

 2018-12-09 07:37 

Phys.org

SpaceX Christmas delivery arrives at space station...

A SpaceX delivery full of Christmas goodies arrived at the International Space Station on Saturday, following a slight delay caused by a communication drop-out....

 2018-12-08 12:17 

Phys.org

Uber filed paperwork for IPO: report...

Ride-share company Uber quietly filed paperwork this week for its initial public offering, the Wall Street Journal reported late Friday....

 2018-12-08 12:17 

Phys.org

SpaceX Christmas delivery delayed by communication problem...

A communication drop-out has delayed a Christmas delivery at the International Space Station....

 2018-12-07 21:36 

Phys.org

China launches rover for first far side of the moon landing...

China launched a rover early Saturday destined to land on the far side of the moon, a global first that would boost Beijing's ambitions to become a space superpower, state media said....

 2018-12-07 21:28 

Phys.org

InSight lander 'hears' Martian winds...

NASA's Interior Exploration using Seismic Investigations, Geodesy and Heat Transport InSight lander, which touched down on Mars just 10 days ago, has provided the first ever "sounds" of Martian winds on the Red Planet. A media teleconference a...

 2018-12-07 21:22 

Phys.org

Experiments at PPPL show remarkable agreement with satellite sightings...

As on Earth, so in space. A four-satellite mission that is studying magnetic reconnection—the breaking apart and explosive reconnection of the magnetic field lines in plasma that occurs throughout the universe—has found key aspects of the proc...

 2018-12-07 21:21 

Phys.org

Researchers probe hydrogen bonds using new technique...

Researchers at Carnegie Mellon University have used nuclear resonance vibrational spectroscopy to probe the hydrogen bonds that modulate the chemical reactivity of enzymes, catalysts and biomimetic complexes. The technique could lead to the development of...

 2018-12-07 21:17 

Phys.org

A new 'spin' on kagome lattices...

Like so many targets of scientific inquiry, the class of material referred to as the kagome magnet has proven to be a source of both frustration and amazement. Further revealing the quantum properties of the kagome magnet is seen as one of the primary cha...

 2018-12-07 19:00 

Phys.org

Are amorphous solids elastic or plastic?...

In a crystalline solid, the atoms form an ordered lattice. Crystalline solids respond elastically to small deformations: When the applied strain is removed, the macroscopic stress, as well as the microscopic configuration of the atomic lattice, goes back ...

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