WASP has a built-in Facebook

As the human insect may have a special gift for Science facesWeb release: Tuesday, , August 2, 2011, faces Northern paper wasp UPThe (Polistes fuscatus) proved to be exceptionally good science faces the other of this type.Bugwood.org Whitney Cranshaw, Colorado State University

BLOOMINGTON, Ind. — OSA may be the first biology, showing specific talents to science faces its own genus.

Polistes fuscatus people like wasps can be distinguished from each other by a person of their species. It turns out that, like people, these wasps are particularly good at recognizing faces compared to other objects, Michael Sheehan, University of Michigan reported July 28 2011 Conference behavior.

"To my knowledge, no other insects have showed that possess such sophisticated facial recognition is individual learning," said the scientist Emilie Snell-Rood, from the University of Minnesota. Study of how individuals of any species recognize mutually enrich the understanding of social scene.

Biologists have debated whether certain species — including humans and other primates, as well as sheep — has some specialized cognitive power to interpret the faces. Now it seems the discussion will be spread to the wasps.

In p. fuscatus colonies of wasps sport irregular schedules of markings, yellow, Brown and black. Recognizing each other quirky facial markings appear to minimize aggression as consorts clash for dominance, establishing joint nests.

Sheehan and his colleagues tested the wasps to learning by teaching them to select one of a pair of OSA faces vs. abstract patterns in black and one of the two or one-in-hand portraits of tracks. The scientists examined several pairs in each category.

Wasps p. fuscatus learned to choose between images of all three types. Even-legged on the six students scored the highest in the face of science in order to select the correct OSA, get a reply within about three-quarters of the tests.

As further evidence that stands in front of you is special for paper wasps, insects better not distinguishing the real images of faces and facial images also learning elements of mashed together in clumps or with their unnatural antennae blanked out.

Sheehan also examined different species, p. metricus, and did not find signs of any particular response to faces. But p. metricus has facial markings or varieties of p. fuscatus, nor whether the colonies have more than one Queen.

Contrast with p. metricus makes a particularly striking part of the case, said David Queller Washington University in St. Louis.

Tested on not very different smiley faces its own genus, p. metricus wasps unexpected results are above the opportunity in the choice between pairs of training. They learn the distinction between the variable faces p. fuscatus. However, their actions do not differ from the science of face parts mixed mashups or free antenna faces. For them, Sheehan concludes her face really is just another object.

Found in: Life

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The brain waves make quick brake

In a fast-moving car, the brain can be faster than the rate hit the brakes. Relying on brain waves, indicating an intent to jam on the brakes, a new technology could shave critical milliseconds response time, researchers report online on July 28 in the Journal of neural Engineering.

The work adds to a growing trend in technology, which helps drivers. Although it may eventually lead to the improvement of the emergency braking signal the brain, new technology is not ready to go.

"As a study of basic sciences and was quite impressed," says cognitive neuroscientist Raja Parasuraman of George Mason University in Fairfax, VA. "I think it still requires a lot more."

Research computer scientist Stefan Haufe Berlin Institute of Technology in Germany and his colleagues measured brain wave changes, while the participants drove in car simulator.

The participants drove about 60 miles per hour, after the lead car at the hairpin road with heavy traffic oncoming. So often the lead car would slam on his brakes, so that the participant would have to do the same in either crash.

Most of the drivers of delay between the lead car, stopping and slamming the brakes themselves were around 700 milliseconds. The specific neural signatures are visible through this lag time, and may be early indicators that drivers wanted to brake.

Whether Haufe "our approach was that the driver intends to more quickly than it actually might work," he says. "That's what the neural signature is good for."

Haufe and his colleagues designed a system that detected and interpreted these neural patterns. In the simulation system, which included EMG data from the electrical activity of muscles of the legs, roughly 130 milliseconds faster than the driver for the unaided eye, the team reports. For a car travelling at 60 miles per hour, this time difference translates to about 3.7 meters to stopping distance — the length of some compact cars.

Peak performance system will incorrectly slam on the brakes nearly twice per hour, the rate of false alarms, which you will fail if the system is to be useful, Parasuraman says. "We all hate alarms that go beyond whether or not there is a risk, such as fire alarm that goes off when there is no fire," he says. "Even the rate of 1 per cent of false alarms would not be acceptable for most people."

And even if people can be convinced to wear the CAP EEG cumbersome and lets you drive, the introduction of driver assistance technology can bring a different set of problems, "says Parasuraman. People may become overly reliant on technologies and reduce their vigilance on the road.

Found in: Body and brain and humans

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Cracking sewers bleed fecal germs

Green: New dye brownThe water closed Wisconsin brainstorming originally was added to the wastewater Pipe upstream. Green proves germy sewage was leaking from the outside.S. McLellan/UW-Milwaukee

New studies in California and Wisconsin disclose the dirty little secret: out of sight, keeping pace with the many urban sewer pipes and agitated germ filth, blood.

Research track of hemorrhaging into drains storm. These pipes to channel their contents into the streams and coastal waters, are designed to collect enough pure rainwater and run-off from the watered lawns. Even raw sewage in the periods represented almost 20 per cent of one local brainstorming flow reports, Patricia Ann Holden, University of California, Santa Barbara and her colleagues.

"We did the same," says Sandra McLellan University Milwaukee. In August, the water research group reports its finding of human feces — bacterial indicator of Bacteroides-in samples from all 45 water outflows in the area of Milwaukee, a storm which monitored over four years. Does the data indicate that McLellan sewage contamination "is nearly ubiquitous in the urban environment," he says.

In Santa Barbara for Holden's mapped areas where drainage pipes were next to or below the tempest tubes and then added to the effluent of Fluorescing dye. Using automated sensor, they monitored for dye warning device in nearby Storm drains.

In one system the dye showed up storm sewage within half an hour. In the second, it took between two and 74 hours for dye emerge on the waters. In both cases, the two other indicators of human feces bacteriological with dye, scientists from the California given online 25 July in an environment of science and technology. In the third system, where the leaky sewage pipes apparently Lay beneath the storm drains, stain or germs appeared to wick and to the treatment of water pipes.

Study of California's first "which ultimately connects leaky sewers problems related to pollution of the waters of rivers, oceans and lakes," says Marc Edwards Virginia Tech in Blacksburg, Virginia. "It informs our understanding of how water infrastructure may jeopardise the decaying, human health and the environment and helps in prioritizing investments to mitigate these risks."

Last year, Randall Hunt U.S. Geological Survey in Middleton, Wis, and his colleagues showed that the Storm drains are not only potentially dangerous sewage leak recipient. In Oct. 15 environmental science and technology, tracking the movement of people have described the viruses from pipes piping to groundwater and drinking water wells.

It has been established, many drinking water mains, which are susceptible to corrosion and small gaps, near sewer pipes. When the water is squirting out under pressure from the holes in the mains network, you cannot introduce bugs. But mains odczuwali pressure drop, Edwards notes that temporarily may cause the germy environment to gain material with sucked in. Short later finds that filth will increase towards your home faucets.

Scout water quality managers to sewage contamination usually by measurement Of common intestinal bacteria e. coli or other ' indicators ' faeces, whether humans or animals. But the feces of animals are not necessarily pathogenic or evidence page breaks, drainage, McLellan notes. But the germs people such as Bacteroides indicate a sewage leaks and ozone formation of potentially dangerous micro-organisms.

McLellan looked fecal indicators in water, and often high concentrations of nonpathogenic bacteria, fecal occurred in the absence of sewage coming from the germs people — and vice versa. Thanks to her group, new data suggests, says, "that is most important to focus on specific bacteria for sewage," what can I do with new genetic probes, that the most serious sewer leaks.

Santa Barbara has taken recently, all you have to repair several segments of pipe drainage pipes, based on data from the team, the Holden company.

Found in: environment, genes and cells and technology

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News in brief: molecules/matter and energy

Clear slime busters, batteries, invisibility Cloak 3-and more in this week's newsWeb edition: Sunday, July 31, 2011

Breaking up is hard to Goo
Scientists have hit on several of the compounds to weaken the rigid mucus that occurs most often in breeds many patients by fibrosis of the lung. Slime is usually Sticky traps and blanket which helps clear inhaled particles, but they guys by fibrosis, fibrous bundle BED allow slime dense, thick and strong clear it. Two extracts from alginate, a primary ingredient in algal cell walls, disturb the mucous tissue interactions, Catherine Nordgård and Kurt Draget University Norwegian report, science and technology in the upcoming Biomacromolecules. Associations can be useful to modify the mucus in the respiratory tract and beyond — Rachel Ehrenberg

Bats filter out clutter
Like the students of universities echolocating bats can tolerate the clutter. Big brown bat trick evolved to ignore the potentially confusing acoustic leaves and trees, in pursuing its prey through foliage is dense. By recording conversations trained bats, complicated frequency and audio copies, Mary Bates Brown University and colleagues found that bats filter out certain sounds like human beings, by ignoring the distractions in their peripheral vision. Bats Ignore echo returning from objects on a page or a long distance, which seem to be missing in the higher frequencies. This technique, reported in July 29 Science, could be useful for designing better sonar technology. — Devin Powell

3-invisibility cloak
Newest invisibility Cloak to hide the object 3D seen from any direction. Previous cloaks carpet can hide just the something is sitting on the surface, like a bump on a log. David Rainwater and colleagues at the University of Texas at Austin introduced the new Mask tubes with a diameter of 1.25 centimetres, out of plasmonic metamaterials — synthetic structures with wobbly electrons on the surface that bend electromagnetic radiation in unusual ways. This new Mask plasmonic manipulates the ovens, but the concepts should keep for as well as infrared and optical wavelengths researchers report online 19 July on arXiv.org. — Devin Powell

Transparent lithium-ion battery
New battery lithium ion is a transparent step towards making mobile phones, e-readers and other electronic devices fully transparent. While scientists already have transparent circuits, batteries remained opaque czlonowych. That's because the electrodes must be thick to store energy. Created Yuan Yang and colleagues at the University of Stanford new electrode out of strips of material large enough for the eye to see, arranged in a grid like Tic-Tac-Toe. Flexible prototype is 60 percent transparent. Its energy density — the amount of energy is stored in a given volume — only 3% of that of a typical cell phone batteries, but can theoretically be increased by a factor of 10, researchers report in the upcoming PNAS. — Devin Powell

Found in: matter and energy and molecules

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Science and society: Eels point to suffocating the Gulf floor

Eerie eel by moonlightNormally slum dweller settlements including the eel has been spied on the surface of the Gulf in July, escaping, suffocating bottom waters.N. Rabalais/LUMCON

In June, scientists predict that the annual Gulf of Mexico dead zone-the region's underwater where the water contains too little oxygen to preserve life — may turn into the biggest ever. In fact, not uncommon. Due to the fortuitous arrival of stormy weather, the dead zone that year debuted on approximately 6,800 square miles, the researchers report Aug. 1 — large, but far from the behemoth record 9,500 square miles that were mentioned explicitly as soon as possible.

This is a good message. The bad: a substantial part of the Gulf region affected should not be so low in oxygen, but practically ornamentu it from the surface to seafloor. And researchers literally could smell problem, not Nancy Rabalais, Executive Director of the Louisiana universities marine Consortium, based in Chauvin. In the case where the loss of oxygen occurs at seafloor sediment, she reports, gurgles up hydrogen sulfide — gas, which transfers the egg to the rotten stench.

It was not the only character environment very perturbed.

As in previous years and her colleagues spent Rabalais time at sea this summer mapping an oxygen level (see below) from different depths of North Bay. In July, the long walk Rabalais witnessed eels swimming at the surface. Usually they live in the sediment of the Gulf. Some crabs living in seafloor also propelled each tens of feet to the surface to avoid suffocating.

Bay in 2011 dead zoneDark red represents the area of the Gulf, and the place where Dead Zone July--a region with less than 2 parts per million (2 mg/l) of dissolved oxygen--expanded.N. Rabalais/LUMCON

"I have seen the brown shrimp (not on this cruise) is the same. They live in the mud, as well as ' he says. And for them to fly up to 65 feet to avoid suffocating bottom waters, desperate, he says, because they would have been an essential food all along the way.

Such monuments are evidence of the validity of the depletion of oxygen, or hypoxia, developed in some regions this year, the dead zone waters. As the concentration of oxygen in the seafloor approach zero, chemistry including sediment water interface transfers, releasing hydrogen sulfide. This is a double whammy for aquatic life, explains Rabalais: not only is there little or no oxygen present, but hydrogen sulphide may itself to kill organisms that cannot fly away.

Even those that can be moved may develop subtle reproductive toxicity, Rabalais adds, pointing out at work by Peter Thomas, University of Texas at Austin Marine Science Institute, its in port Aransas.

His team began studying croakers, a genus of fish that may be living in the waters of the depleted of oxygen. Initially, the team reported absence of spawning-because the affected croakers lacked mature eggs or sperm. Recently, Rabalais notes, his band "showed that low oxygen has led to some changes in sex in the croakers, who live in the area — turning females males."

Links for farm runoff

Dead zones require two-factor usposabiajacy: a surfeit of nutrients and the stratification of water on two solid, unmixing zones. Whether Rabalais the Mississippi River is responsible for both, explains.

Provide a spring of fresh water, which is less dense than brine, can lead to stratification of the water. The river also deposits of fertilizer — mainly nitrate — who the source of growth of algae and phytoplankton. According to these organisms die, their bodies instilled into the lower zone and decompose. But the microbes responsible for the degradation of oxygen consumption, which, owing to the separate layers of water by levels of salinity, will not easily become completed. This leads to a growing loss of oxygen at depth. If the situation through long enough oxygen can be found of water, practically to the surface.

Excessive flooding this spring, upper Midwest and years fueled the Gulf with fresh water and nitrogen, so the anticipated dead zona Monster. However, along the Don, Invest, in July (it made landfall in Texas 29). The oxygen-rich monk churning butter whisked surface waters to depths suffocating, limiting growth and ultimate size of this year, Dead Zone, Rabalais said.

But this has not been jeopardised, Anna adds. I also quite lucky because the evidence is building is an indication of "the Gulf is becoming less resistant to impurities of nitrogen," she observes. Over time, is made of smaller nitrogen inputs to create large areas of low oxygen. And "this is clearly not good news," he says.

Found in: Chemistry, Ecology and environment

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Now the invisibility Cloak, which you can see

Detector BUMPLESS LOGOS looking for visible light bouncing off the surface sees disturbing inequalities in light (left). But when the light strikes the new Mask, designed to hide the bump, bounces, as will off a flat surface (right).American Chemical Society

First invisibility cloaks, which fulfil their fancy nickname arrived.

Unlike previous cloaks that manipulated the specially light polarization and ovens or infrared already invisible to humans, two new fold normally visible approach. Masked by one of these materials, the object may disappear before the eyes.

"If the aim is invisibility, eventually needed to build something that is detectable to the human eye," says Majid Gharghi, applied physicist at the University of California, Berkeley.

New Mask carpet by Gharghi from the band the band is draped over a silicon nitride inequality. Typically this would scatter light striking on the Ardennes, detecting anomalies. But thousands of tiny holes of varying sizes etched into Silicon nitride light guide by hiding the inequalities and anything concealed beneath it. Light over a wide range of colors is behaving as if the striking flat surface instead, report scientists, July 13, Nano letters.

"Presentation of experimental to blue, green and red light, it looks very impressive," says Steven Cummer, electrical engineer, Duke University.

Helsing pattern in light in accordance with the same kind of mathematics, describing how a gravity curves, curves of the Mask-like beam Sponge. Making such materials, called metamaterials for visible light has long been a challenge. Openings must be smaller than the wavelength of light — sam tens of nanometers wide for visible light, the shortest wavelength cloaked to date.

The first prototype is not ready to Rapped up and sent to Hogwarts, though. Its magic works only in the case of light moving in a particular two-dimensional plane. Creating inequalities 3-silicon nitride capable of tricking, the light coming from any direction would be difficult with the techniques used in this experiment, "says Gharghi.

"In this sense, the result is a major setback, says Martin Wegener, applied physicist at the Karlsruhe Institute of Technology in Germany.

Wegener and his colleagues developed the cloak carpet, which you can hide a bump from the red light of three-dimensional traverse open air. They too perforate your cloth, opting for plastic, which can be easier to work with.

The disadvantage is that the holes can be made only slight in the polymer. This Mask can hide an object from the red light lengths 700-nanometres but not shorter wavelengths, green, and blue light, report researchers 1 June letters optics.

Currently, metal and plastic, you can hide only microscopic objects.

"With these examples of the successful now really time to brainstorm what methods would be scalable and transform these toys tiny laboratory in something of a wider Community can use and enjoy," says Nicholas Fang, an engineer at the MIT study of metamaterials.

Neither approach is likely to be ever hide would-be Harry Potter. But, the supersizing mastery of light may one day strengthen vision imaging devices, "says Fang, or let the solar panels to suck more energy of sunlight.

Found in: matter & energy

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Science and society: Marine microbial greenhouse gas emitters to prove

Warmers unsung climate as a single organism, once considered the type of bacteria.

Earth's oceans emit an estimated 30 percent of nitrous oxide or N2O, the introduction of the atmosphere. Yet the source of this greenhouse gas has found the scientists for years. Bacteria — long the leading candidate — you can generate the N2O, although the seas did not seem to include sufficient to cover all the N2O, who were coughing up sea world. Now researchers at the Woods Hole Oceanographic Institution and MIT offer a candidate more likely: archaea.

The seas contain more than enough of these single as microbes (once considered the type of bacteria). In addition, the Massachusetts-based researchers, new data shows these micro-organisms have a tendency to convert ammonia in N2O. And there is no lack of ammonia in the oceans.

"In principle already figured out that the most abundant organism on the planet makes greenhouse gas very," observes the microbial Alyson Santoro Woods Hole oceanographer, led a new investigation. And not only are the most abundant Archaea microbes usually says, but it is also the majority of the inhabitants of numerous marine world. The findings by the members of the band appeared online on July 28, in science.

Despite their vast numbers of the presence of marine Archaea only came to light in 1992, he says. Just over a dozen years later, an articulated the paper emerged suggesting that the transfer of these bacteria can break down ammonia. "What we have now been shown" Santoro explains that "is that you can make the N2O" Archaea — and abundance, at least in the laboratory.

So what? Proportional oceanic production of N2O Archaea does not change the quantity of gas available to help the climate of warm Earth. But Santoro notes that you know its likely source is "an important first step in predicting N2O emissions as may change as the oceans warm or acidified low-oxygen areas — or Expand." All these conditions are likely to increase as global warming continues.

In fact, her group is wondering how Archaea can respond to the growing dead zones, similar to the one that forms in the Gulf of Mexico, each year (and in hundreds more coastal sites in the world). The concerns of researchers: as the oxygen concentration in seawater decreases ammonia oxidizing bacteria (or degrading) to their production of N2O.

Found in: Chemistry, climate and environment

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