Today on New Scientist: 19 February 2013

Doctors would tax sugary drinks to combat obesity

Hiking the price of fizzy drinks would cut consumption and so help fight obesity, urges the British Academy of Medical Royal Colleges

Space station's dark matter hunter coy about findings

Researchers on the Alpha Magnetic Spectrometer, which sits above the International Space Station, have collected their first results - but won't reveal them for two weeks

Huge telescopes could spy alien oxygen

Hunting for oxygen in the atmospheres of distant exoplanets is a tough job, but a new wave of giant telescopes should be up to the task

Evolution's detectives: Closing in on missing links

Technology is taking the guesswork out of finding evolution's turning points, from the first fish with legs to our own recent forebears, says Jeff Hecht

Moody Mercury shows its hidden colours

False-colour pictures let us see the chemical and physical landscape of the normally beige planet closest to the sun

LHC shuts down to prepare for peak energy in 2015

Over the next two years, engineers will be giving the Large Hadron Collider the makeover it needs to reach its maximum design energy

Insert real news events into your mobile game

From meteor airbursts to footballing fracas, mobile games could soon be brimming with news events that lend them more currency

3D-printing pen turns doodles into sculptures

The 3Doodle, which launched on Kickstarter today, lets users draw 3D structures in the air which solidify almost instantly

We need to rethink how we name exoplanets

Fed up with dull names for exoplanets, Alan Stern and his company Uwingu have asked the public for help. Will it be so long 2M 0746+20b, hello Obama?

A shocking cure: Plug in for the ultimate recharge

An electrical cure for ageing attracted the ire of the medical establishment. But could the jazz-age inventor have stumbled upon a genuine therapy?

Biofuel rush is wiping out unique American grasslands

Planting more crops to meet the biofuel demand is destroying grasslands and pastures in the central US, threatening wildlife

Read More..

Retinal implants clear new hurdle

PARIS: German-designed implants aimed at restoring vision to patients blinded by retinal disease have succeeded in the second phase of trials, researchers reported on Wednesday.

The device was tested for up to nine months among nine people with retinitis pigmentosa, an inherited disease in which light receptors on the back of the eyeball degenerate and eventually cease to function.

"Of the nine patients observed in the study, three patients were able to read letters spontaneously," Retina Implant AG, a nine-year-old technology startup company that invented the device, said in a press release.

"During observation in and outside the laboratory, patients also reported the ability to recognise faces, distinguish objects such as telephones and read signs on doors."

The study appears in Proceedings of the Royal Society B, a journal published by Britain's de-facto academy of sciences.

The device consists of a tiny light-sensitive chip measuring 3mm by 3mm (0.11 x 0.11 inches), which sends electrical signals down the optic nerve to the brain, providing a "diamond-shaped" black-and-white image with a field of 15 degrees.

Attached to the retina, the implant is powered via a thin cable which connects to a small coil fitted under a fold of skin behind the ear.

The coil is charged when a handheld battery unit is brought up close to it -- the same principle of wireless charging that is used, for instance, in electrical toothbrushes -- and thus means it can be used outdoors.

The battery unit also has two knobs, enabling the user to adjust the brightness and contrast of the image.

The patients received the implant in one eye, the one with the worst visual function.

One of the nine had to drop out of the experiment after the optic nerve was damaged during the implant operation, and another experienced a buildup in eyeball pressure which was successfully treated with drugs.

New drugs and revolutionary medical devices typically undergo a three-phase process of trials on human volunteers.

The number of patients and the scope of the test gradually widens, in a bid to ensure that the innovation is both safe and effective.

The first trial of the implant, published in 2010, used a cable, rather than wireless technology, to power the device.

There are several other entrants in the field for retinal implants, reflecting big advances in electronic miniaturisation and microsurgery in the past decade.

None claims to be a cure but rather an aid to distinguish between light and darkness and ascertain the shape of objects.

"Although the restoration of vision described here is limited, blind persons with no alternative therapy options regard this type of artificial vision as an improvement in everyday life," the German doctors said.

Last week the US firm Second Sight Medical Products gained US regulatory approval in addition to the green light from Europe for its Argus II retinal prosthesis.

There is also a 24-electrode device made by Bionic Vision Australia, which has so far been tested on one patient.

-AFP/gn

Read More..

6 tech features that should be standard in every new car

Air bags, anti-lock brakes, and stability control. CD players, power locks and windows, and air conditioning. These are all features that at some point or other were optional (and sometimes costly) vehicle features, but over time we've come to expect them in every new
car on the road -- whether that's due to legislation or changing buyer tastes. As cars continue to evolve, so grow our expectations of what should be included in the sticker price. I've rounded up a few optional car tech features that I'd like to see become make the jump to standard equipment.

---

Early Bluetooth hands-free systems were often included in expensive, optional tech packages.

(Credit:
Josh Miller/CNET)

Bluetooth connectivity

Let's start with the most obvious answer: Bluetooth. The best way to keep phone-toting drivers from plowing into things is by keeping their hands on the wheel and eyes on the road by making use of the ubiquitous Bluetooth connection that nearly every phone has. Unfortunately, early Bluetooth connectivity was pretty clunky and had traditionally been bundled as part of expensive technology packages. Drivers and lawmakers complained loudly and, by and large, automakers have started to make Bluetooth standard on their 2012 and 2013 model year vehicles. There are still a few stragglers who haven't jumped on the standard hands-free connectivity train, but I guess that within a year or two nearly every new car will be hands-free ready down to the most spartan models.

But this is a wish list of sorts, so why stop there? I want the
hands-free calling to be as easy and safe to interact with as possible, so good voice command is a must. If an automaker doesn't want to develop a good voice dialer, the option to allow the phone to handle its own spoken commands with Siri and Google Voice Search would be welcome additions. I also want Bluetooth audio streaming to be standard since the hardware will already be in place.

---

Hyundai has been making USB connectivity standard across its line, but the new Apple Lightning connector has caused issues with its iPod connectivity.

(Credit:
Antuan Goodwin/CNET)

USB/iPod connectivity

Just like the mighty 8-track and compact cassette tapes that came before it, the CD player is on its way out of the dashboard. Chevrolet has already ditched the disc with the Spark subcompact and I doubt that they'll be the last to do so.

Any automaker that doesn't offer USB connectivity for digital media as a standard feature across its line is already behind the tech curve. Why? It's because no one buys physical media anymore. The success of digital music stores, such as
iTunes and Amazon, and the availability of cheap flash media and digital media players means that the USB port is the new CD slot. Who wants to carry around a binder full of compact discs when you can shove an entire music library into your pocket on a USB key or iPod device?

While we're at it, put two USB ports on the dashboard and give them 1-amp or better, high-powered outputs to double their functionality as a fast-chargers for today's power thirsty smartphones, eliminating the need to purchase 12-volt car chargers.

---

Rear view cameras increase both safety and convenience when reversing.

(Credit:
Nissan)

Rear view camera

This is another obvious choice, because the U.S. government has been saying that it is going to make rearview cameras a required safety featuure since about 2008. However, the deadline keeps getting pushed back and currently sits sometime beyond 2014. The simple acts of checking mirrors and turning your head shouldn't be downplayed, but automakers have continued to build cars with ever decreasing rear visibility thanks to high belt-lines and thick rear pillars. Nearly everyone can benefit from the increased visibility afforded by a rear camera.

Suburban families with young children or outdoor pets gain the additional safety of not backing over someone or something important to them. Urbanites who often park parallel on the street gain an edge when squeezing into a tight spot thanks to the camera's unique bumper-level view. (Maybe these standard cameras will stop San Franciscans from marring their and others' cars by using their bumpers to gauge parking distance.)

---

Most Blind Spot Monitoring systems manifest as lights located on the side mirrors that illuminate to indicate an obstruction.

(Credit:
Josh Miller/CNET)

Blind-spot monitoring

Blind-spot monitoring makes the list largely for the same reasons that rear view cameras do: automakers are building cars with fairly poor visibility, making it difficult for even a good driver to do a simple over-the-shoulder check when changing lanes. On the other hand, those not-so-good drivers who don't even bother with the over-the-shoulder check could definitely use a flashing light or audible alert to let them know that they're about to merge into me on the freeway. Either way, all of us could benefit from an extra set of electronic eyes watching our tails.

Nissan's latest generation of blind spot monitoring technology is very interesting. The 2013 Altima doesn't use side sonar sensors like most systems do. Rather, it makes use of the ultra-wide angle rearview camera to provide optical monitoring of the vehicle's rear corners. Since we're already making the rear camera standard, this tech would hit two driver safety birds with one stone.

---

Ford's Sync App Link gives users access to their favorite apps with good voice command.

(Credit:
Antuan Goodwin/CNET)

Car-centric app integration

I'm sure that this is the feature that the "zero-tolerance for phones" contingency of CNET readers and commenters will take the most issue with, but bear with me.

A large number of drivers are already using apps in the car, sometimes illegally, for simple functions such as listening to music, podcasts, and audiobooks, navigating to their destination, getting around traffic, and letting loved ones know where they are. Third-party technologies, such the Car Connectivity Consortium's MirrorLink and Livio Connect are already making strides to make interacting with these apps as easy as tuning a radio station. Automakers are also making similar strides with their own technologies -- Toyota's Entune and Ford Sync AppLink, for example.

Since we can't put the smartphone apps cat back into the mobile technology bag, let's instead focus on trying to the current situation safer. A good app integration system should allow me to quickly access my favorite streaming radio app, give me the fasted directions home using my favorite navigation app, and share my ETA with my friends using my favorite location sharing app, using the large dashboard or touchscreen buttons (good), steering wheel controls (better), or voice commands (best), all while my phone remains tucked away in my pocket.

We see again here that these technologies are already making their way into cars, but as parts of expensive tech bundles that include overpriced navigation systems and premium audio rigs that could discourage many drivers from bothering. Since, I'm already using my own phone and data plan, app integration should be cheap or free.

---

The MyFord Touch system features a Do Not Disturb feature, but its elective nature limits its usefulness.

(Credit:
Ford)

Do Not Disturb mode

Sometimes, even with today's best app integration systems, the temptation to check that incoming text message on the phone can be just too much for some drivers. So, it's not enough that app integration systems simply not support non-car apps; they'll have to actively suppress those other apps and their notifications with a Do Not Disturb mode.

Some infotainment systems, such as MyFord Touch, already offer a Do Not Disturb feature that silences calls and texts, automatically responding via SMS that you're driving. However, this system is totally optional and defeatable, which limits its usefulness to the very type of distracted driver it attempts to protect. I propose that, in order to access the easy-to-use app integration that I asked for in the previous section, the phone should be required to enter a Do Not Disturb mode of sorts, silencing notifications for text messages, twitter tweets, facebook posts, and other apps you should probably not be fooling with until the car is parked. This could be as simple as putting the phone into a silent, no-vibration mode, only funneling car-relevant information through the vehicle's own interface, or as complex as totally locking down the phone at the OS level.

Since we're speculating, I'd like to see my amazing Do Not Disturb feature used as a parental lock for young and inexperienced drivers, requiring that teenager's smartphone be paired to the car's hands-free system for emergency phone calls, but locked-out for apps and texts when the vehicle is in motion.

I may be asking for a lot here and no doubt the truly foolhardy will still find a way to circumvent my proposed Do Not Disturb feature, but I think that by incentivising drivers to give up their texts and tweets for a while to gain easy app integration access to the music and navigation apps that they love can go a long way toward improving vehicle safety -- certainly much further than simply finger-wagging about what people shouldn't be doing behind the wheel. Make both systems standard and you've got a one-two punch for managing driver distraction.

---

So, what did we miss? What favorite car tech feature would you like to see made standard on tomorrow's cars? Sound off in the comments and let us know.

Read More..

Florida Python Hunt Captures 68 Invasive Snakes

It's a wrap—the 2013 Python Challenge has nabbed 68 invasive Burmese pythons in Florida, organizers say. And experts are surprised so many of the elusive giants were caught.

Nearly 1,600 people from 38 states—most of them inexperienced hunters—registered for the chance to track down one of the animals, many of which descend from snakes that either escaped or were dumped into the wild.

Since being introduced, these Asian behemoths have flourished in Florida's swamps while also squeezing out local populations of the state's native mammals, especially in the Everglades. (See Everglades pictures.)

To highlight the python problem, the Florida Fish and Wildlife Conservation Commission and its partners launched the 2013 Python Challenge, which encouraged registered participants to catch as many pythons as they could between January 12 and February 10 in state wildlife-management areas within the Everglades.

The commission gave cash prizes to those who harvested the most and longest pythons.

Frank Mazzotti, a wildlife ecologist at the University of Florida and scientific leader for the challenge, said before the hunt that he would consider a harvest of 70 animals a success—and 68 is close enough to say the event met its goals.

It's unknown just how many Burmese pythons live in Florida, but catching 68 snakes is an "exceptional" number, added Kenneth Krysko, senior herpetologist at the Florida Museum of Natural History in Gainesville.

Snakes in the Grass

Finding 68 snakes is impressive, experts say, since it's so hard to find pythons. For one, it's been unusually warm lately in Florida, which means the reptiles—which normally sun themselves to regulate their body temperature—are staying in the brush, making them harder to detect, Krysko said.

On top of that, Burmese pythons are notoriously hard to locate, experts say.

The animals are so well camouflaged that people can stand right next to one and not notice it. "It's rare that you get to see them stretched out—most of the time they're blending in," said Cheryl Millett, a biologist at the Nature Conservancy, a Python Challenge partner.

What's more, the reptiles are ambush hunters, which means they spend much of their time lying in wait in dense vegetation, not moving, she said.

That's why Millett gave the hunters some tips, such as looking along the water's edge, where the snakes like to hang out, and also simply listening for "something big moving through the vegetation."

Even so, catching 68 snakes is "actually is a little more than I expected," said Millett.

No Walk in the Park

Ruben Ramirez, founder of the company Florida Python Hunters, won two prizes in the competition: First place for the most snakes captured—18—and second place for the largest python, which he said was close to 11 feet (3.4 meters) long. The biggest Burmese python caught in Florida, nabbed in 2012, measured 17.7 feet (5.4 meters).

"They're there, but they're not as easy to find as people think," said Ramirez. "You're not going to be stumbling over pythons in Miami." (Related blog post: "What It's Like to Be a Florida Python Hunter.")

All participants, some of whom had never hunted a python before, were trained to identify the difference between a Burmese python and Florida's native snakes, said Millett. No native snakes were accidentally killed, she said.

Hunters were also told to kill the snakes by either putting a bolt or a bullet through their heads, or decapitating them-all humane methods that result "in immediate loss of consciousness and destruction of the brain," according to the Python Challenge website.

Ramirez added that some of the first-time or amateur hunters had different expectations. "I think they were expecting to walk down a canal and see a 10-foot [3-meter], 15-foot [4.5-meter] Burmese python. They thought it'd be a walk in the park."

Stopping the Spread

Completely removing these snakes from the wild isn't easy, and some scientists see the Python Challenge as helping to achieve part of that goal. (Read an opposing view on the Python Challenge: "Opinion: Florida's Great Snake Hunt Is a Cheap Stunt.")

"You're talking about 68 more animals removed from the population that shouldn't be there—that's 68 more mouths that aren't being fed," said the Florida museum's Krysko. (Read about giant Burmese python meals that went bust.)

"I support any kind of event or program that not only informs the general public about introduced species, but also gets the public involved in removing these nonnative animals that don't belong there."

The Nature Conservancy's Millett said the challenge had two positive outcomes: boosting knowledge for both science and the public.

People who didn't want to hunt or touch the snakes could still help, she said, by reporting sightings of exotic species to 888-IVE-GOT-1, through free IveGot1 apps, or www.ivegot1.org.

Millett runs a public-private Nature Conservancy partnership called Python Patrol that the Florida wildlife commission will take on in the fall. The program focuses not only on eradicating invasive pythons but on preventing the snake from moving to ecologically sensitive areas, such as Key West.

Necropsies on the captured snakes will reveal what pythons are eating, and location data from the hunters will help scientists figure out where the snakes are living—valuable data for researchers working to stop their spread.

"This is the most [number of] pythons that have been caught in this short of a period of time in such an extensive area," said the University of Florida's Mazzotti.

"It's an unprecedented sample, and we're going to get a lot of information out of that."

Read More..

Arias Says Violent Sex Preceded Killing

Jodi Arias and her ex-boyfriend, Travis Alexander,, had increasingly violent sex in which he tied her to his bed, twisted her arm, bent her over a desk for anal sex, and made sex videos with her in the hours leading up to the stabbing and shooting frenzy that left Alexander dead.

It was a day in which Arias, 32, inched closer to telling the court how the killing of Alexander took place, but after several hours of increasingly emotional testimony the court was adjourned until Wednesday.

In her sixth day on the stand, Arias tearfully described the sex-filled hours that led to Alexander's death on June 4, 2008. She is charged with murder for killing her former boyfriend, but claims she was forced to kill him self-defense. She could face the death penalty if convicted.

"He tied me up, (on) the bed. It's not my favorite but it's not unbearable," Arias told the court.

She said he used a kitchen knife in the bathroom to cut the rope to the proper length, but she didn't remember whether he left the knife in the bathroom or brought it back to the nightstand in the bedroom.

"There are a lot gaps that day... a lot of things I don't remember that day," she said.

Arias and Alexander then took graphic sexual photos of one another and made a sex video, both of which Arias said were Alexander's ideas. Arias has girlish braids in the pictures.

But the mood of the afternoon turned, she said, when Alexander became angry over a scratched computer disk of photos she gave him. He threw the CD and Arias said she became "apprehensive" of his rising temper.

"I know he's getting angry because Napoleon [Alexander's dog] got up and left the room and he always leaves the room when he gets mad." she testified.

"I don't know that I was consciously thinking (of violence) but I was more tense. I stood up, went to walk over to him, to rub his back and make sure he was okay," she said. "But he grabbed me on the upper arms, spun me around and grabbed my right arm and twisted it behind my back, and bent me over the desk, and pressed up against me."

Charlie Leight/Pool/The Arizona Republic/AP Photo

Jodi Arias Gives Explicit Details About Doomed Relationship Watch Video

Jodi Arias Murder Trial: Why She Said She Did It Watch Video

Jodi Arias Tells How She Met Ex-Boyfriend on Stand Watch Video

"I was scared he was going to throw me or something, kick me," she continued. "He pressed his groin up against my butt, did a few thrusts and then started pulling my pants down."

The pair then had anal sex, which Arias said pacified Alexander.

"I was very relieved. I felt like we had avoided catastrophe. It could have led to another fight," she said.

Instead of a fight, Alexander, who was 27 and a devout Mormon, and Arias decide to go upstairs and take more nude photos of one another. Arias said she hoped the photos would satisfy Alexander over his frustration with the scratched CD.

Evidence introduced earlier in the trial show that Alexander was killed while Arias was photographing Alexander in the shower.

Catching Up on the Trial? Check Out ABC News' Jodi Arias Trial Coverage

Timeline of the Jodi Arias Trial

Earlier, Arias explained that she wasn't planning to visit Alexander during her roadtrip from her home in California, but was convinced by him to spontaneously take a detour to his house for sex and to hang out.

"The very last time I called Travis it was kind of like, I don't know how to describe it, he had been very sweet and was guilting me and making me feel bad that I was taking this big trip without going to see him," Arias said this afternoon.

"When I called him last time it was just like all right, I'm going," she said. "(Sex) was our thing at that time. I wasn't going to go there, stay the night and not do that."

Arias' attorney, Kirk Nurmi, asked her repeatedly on the stand if Arias brought a gun or knife with her on the roadtrip and to Alexander's house. She said that she did not.

She also denied a series of allegations made by the prosecution that she dyed her hair, rented an inconspicuous car, borrowed gas cans, turned off her cell phone, and switched money around her bank accounts as she left for Alexander's house because she was planning to murder him when she got there.

Arias said that her hair remained the same color, auburn-brown, throughout May and June, that she rented a car because her own car was not stable enough for highway travel, that she requested a white car instead of a red one because police pull red ones over more often, and that she transferred money to a business banking account for a tax write-off to classify it as a business trip.

The testimony about the road trip and Arias' planning could be key to the jury as they decide whether the killing was pre-meditated, as the prosecution claims. Arias could face the death penalty if convicted of murder with aggravating factors such as pre-meditation.

Arias said that she "didn't sleep at all last night" before testifying about the dramatic incident today. Her comment was stricken from the record.

Arias also described a barrage of threatening text messages sent by Alexander in which he told her he would exact "revenge" on her soon and called her a "sociopath."

She told the court that Alexander's temper would make her "cower."

The messages show a growing discord between the pair in April 2008, less than two months before Arias killed Alexander.

Read More..

Biofuel rush is wiping out unique American grasslands

Say goodbye to the grass. The scramble for biofuels is rapidly killing off unique grasslands and pastures in the central US.

Christopher Wright and Michael Wimberly of South Dakota State University in Brookings analysed satellite images of five states in the western corn belt. They found that 530,000 hectares of grassland disappeared under blankets of maize and soya beans between 2006 and 2011. The rate was fastest in South Dakota and Iowa, with as much as 5 per cent of pasture becoming cropland each year.

The trend is being driven by rising demand for the crops, partly through incentives to use them as fuels instead of food.

The switch from meadows to crops is causing a crash in populations of ground-nesting birds. One of the US's most important breeding grounds for wildfowl, an area called the Prairie Pothole Region, is also at risk, with South Dakota's crop fields now within 100 metres of the wetlands. "Half of North American ducks breed here," says Wright.

Bill Henwood of the Temperate Grasslands Conservation Initiative in Vancouver, Canada, says the results are distressing. "Exchanging real environmental impacts for the dubious benefits of biofuels is counterproductive," he says. "Last year's record drought in the corn belt all but wiped out the crops anyway."

Journal reference: PNAS, DOI: 10.1073/pnas.1215404110

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

Read More..

Tennis: Mass security for Nadal's Mexico event

ACAPULCO, Mexico: A brutal gang rape and other crimes have prompted a massive security operation for Acapulco's tennis tournament, with 4,000 personnel to be deployed at an event headlined by Rafael Nadal.

The Pacific port has become Mexico's deadliest city and local police have struggled to stem a brutal turf war between drug gangs where the intimidation of rivals includes the dumping of headless bodies in the streets.

The unprecedented show of security at the tennis event is three times the size of Acapulco's own police force and will feature army, navy, federal, state and municipal police, a senior Guerrero state government official told AFP.

Members of the deployment will begin to arrive on Wednesday, said the official, who spoke on condition of anonymity regarding next week's tournament.

Tourists had been relatively shielded from the city's violence until a group of gunmen stormed a beach bungalow on February 3 and raped six Spanish women after tying up seven Spanish men and a local woman.

The scaled up force will secure access to the Mextenis stadium, which has a capacity of 7,500, and the Hotel Fairmont Acapulco Princess, with a security perimeter being installed and cars will also be checked.

Former world number one Nadal, who won the Brazil Open on Sunday after a seven-month hiatus due to a knee injury, will be the top ranked player at Acapulco's red clay tournament which begins February 25 and ends March 2.

- AFP/al

Read More..

Microsoft quietly raises price of Office for Mac by 17 percent

Office 2013

(Credit:
Microsoft)

Microsoft has quietly increased the prices of its Office for Mac 2011 by as much as 17 percent, putting it on price par with Office 2013 for Windows.

The software giant has also quit selling multi-license packages, which allowed customers to purchase multiple copies of the application suite at a discounted rate.

The single-license Office for
Mac Home & Student now costs $140, an increase of about 17 percent from the previous price of $120. Meanwhile, Microsoft raised the price of Office for Mac Home & Business, which includes Outlook, to $220, a 10 percent price hike over the previous $200 price.

Microsoft doesn't seem to have publicized the price increase, so it's not clear when the price increase took effect. However, Computerworld, which first reported the increase, estimates it occurred around January 29, the same day that
Microsoft Office 2013 and Office 365 was launched.

CNET has contacted Microsoft for more information on the price increase and will update this report when we learn more.

In addition to the price increase, Microsoft ceased sales of multi-license editions. The multi-user packs are still for sale on Amazon (while supplies last) at a significant discount, but the listing notes that the software is an older edition.

The moves are apparently intended to redirect customers toward Office 365, which costs $100 for an annual subscription. The new offering is part of effort by Microsoft to bring its suite of Office server tools and collaboration work flows onto the cloud.

Read More..

Confirmed: Dogs Sneak Food When People Aren't Looking

Many dog owners will swear their pups are up to something when out of view of watchful eyes. Shoes go missing, couches have mysterious teeth marks, and food disappears. They seem to disregard the word "no."

Now, a new study suggests dogs might understand people even better than we thought. (Related: "Animal Minds.")

The research shows that domestic dogs, when told not to snatch a piece of food, are more likely to disobey the command in a dark room than in a lit room.

This suggests that man's best friend is capable of understanding a human's point of view, said study leader Juliane Kaminski, a psychologist at the U.K.'s University of Portmouth.

"The one thing we can say is that dogs really have specialized skills in reading human communication," she said. "This is special in dogs." (Read "How to Build a Dog.")

Sneaky Canines

Kaminski and colleagues recruited 84 dogs, all of which were more than a year old, motivated by food, and comfortable with both strangers and dark rooms.

The team then set up experiments in which a person commanded a dog not to take a piece of food on the floor and repeated the commands in a room with different lighting scenarios ranging from fully lit to fully dark.

They found that the dogs were four times as likely to steal the food—and steal it more quickly—when the room was dark. (Take our dog quiz.)

"We were thinking what affected the dog was whether they saw the human, but seeing the human or not didn't affect the behavior," said Kaminski, whose study was published recently in the journal Animal Cognition.

Instead, she said, the dog's behavior depended on whether the food was in the light or not, suggesting that the dog made its decision based on whether the human could see them approaching the food.

"In a general sense, [Kaminski] and other researchers are interested in whether the dog has a theory of mind," said Alexandra Horowitz, head of the Dog Cognition Lab at Barnard University, who was not involved in the new study.

Something that all normal adult humans have, theory of mind is "an understanding that others have different perspective, knowledge, feelings than we do," said Horowitz, also the author of Inside of a Dog.

Smarter Than We Think

While research has previously been focused on our closer relatives—chimpanzees and bonobos—interest in dog cognition is increasing, thanks in part to owners wanting to know what their dogs are thinking. (Pictures: How smart are these animals?)

"The study of dog cognition suddenly began about 15 years ago," Horowitz said.

Part of the reason for that, said Brian Hare, director of the Duke Canine Cognition Lab and author of The Genius of Dogs, is that "science thought dogs were unremarkable."

But "dogs have a genius—years ago we didn't know what that was," said Hare, who was not involved in the new research. (See pictures of the the evolution of dogs, from wolf to woof.)

Many of the new dog studies are variations on research done with chimpanzees, bonobos, and even young children. Animal-cognition researchers are looking into dogs' ability to imitate, solve problems, or navigate social environments.

So just how much does your dog understand? It's much more than you—and science—probably thought.

Selectively bred as companions for thousands of years, dogs are especially attuned to human emotions—and, study leader Kaminski said, are better at reading human cues than even our closest mammalian relatives.

"There has been a physiological change in dogs because of domestication," Duke's Hare added. "Dogs want to bond with us in ways other species don't." (Related: "Dogs' Brains Reorganized by Breeding.")

While research reveals more and more insight into the minds of our furry best friends, Kaminski said, "We still don't know just how smart they are."

Read More..

Nike, Oakley Distance Themselves from Pistorius

Corporate sponsors of Olympic "blade runner" Oscar Pistorius have begun to distance themselves from the sprinter, who is accused of murdering his model girlfriend, Reeva Steenkamp. Pistorius is back to court in South Africa Tuesday morning on murder charges.

Oakley, the eyewear manufacturer, and the sporting goods giant Nike announced today that they would no longer run ads featuring Pistorius, the South African double-amputee who gained worldwide fame for running on carbon-fiber blades.

"In light of the recent allegations, Oakley is suspending its contract with Oscar Pistorius, effective immediately. Our hearts are with the families during this difficult time and we'll continue to follow the developments in this tragic case," Oakley spokeswoman Cheri Quigley said in a statement released this afternoon.

Earlier in the day, Nike said it had "no plans" to use Pistorius in future ad campaigns, according to the Associated Press. Nike had already pulled an Internet ad showing Pistorius starting to sprint with the caption, "I am the bullet in the chamber."

The companies made their announcements shortly after Pistorius' own agent, Peet Van Zyl, said publicly that he expected the sponsors to stick with Pistorius through the legal process.

PHOTOS: Paralympic Champion Charged in Killing

Pistorius will appear in court Tuesday morning for a bail hearing. His attorneys are expected to argue against the charge of premeditated murder.

His family has said the shooting was an accident.

The news comes as more details emerge about the incident on Thursday morning in which Pistorius allegedly shot and killed Steenkamp at his gated home in Pretoria, South Africa.

Bryn Lennon; Gallo Images/Getty Images

Oscar Pistorius Allegedly Fought the Night of Shooting Watch Video

Oscar Pistorius: Possibly Incriminating Information Leaked Watch Video

'Blade Runner' Murder Charges: Family Insist Accidental Shooting Watch Video

News reports in local papers have said that police are investigating whether Pistorius had an anger-management problem that led to the incident. They focused in on a bloodied cricket bat that may have been used when Steenkamp died.

A "shocked" teammate of Oscar Pistorius rebutted the rumors and speculation in South Africa that Pistorius had an anger problem.

Ofentse Mogawane, a sprinter for the South African Olympic team who ran the 400-meter relay with Pistorius in the London summer games last year, said Pistorius had always been genial to him and other people.

Mogawane said he would be in court Tuesday to support his friend.

"Basically, he was a very good guy to us, to the teammates and to most athletes," Mogawane said. "He was a really humble person and I wouldn't say a bad word about him. We never had any kind of clash, never any kind of fight or disagreement or arguing.

"The way Oscar's case was, it shocked me, shocked most of the people who know him. Tomorrow in court I am going to be there to support him. To hear what happened the night of the incident," he said.

"Sometimes when people are angry they cannot control their anger. Something must have happened."

Mogawane, 30, spoke in support of Pistorius after a report in South Africa's City Press newspaper that claimed police were looking into the possibility that a bloody cricket bat found in his bedroom was used before the shooting.

"The way the news has been running around in South Africa, that he is a short-tempered person, a person who has problems with anger management, they just want something to say," Mogawane said. "They don't know Oscar at all. They just want to get interviewed and take pictures. But truly speaking, it's just a lot of speculation."

Mogawane said he had seen Pistorius become angry before, but only in the same way as any other athlete or person.

But the City Press reported Sunday that police are investigating different scenarios involving the bat. Among them is the possibility that the flat-fronted bat was used in a violent argument before the shooting.

The paper also reported that Pistorius might have first shot Steenkamp in the bedroom, and that she possibly fled to the bathroom where she was shot three more times through the door.

When Pistorius' family arrived at the scene before paramedics, they saw him carrying Steenkamp down the stairs and performing mouth-to-mouth resuscitation on her, City Press reported.

Pistorius, who is nicknamed the "blade runner" because of the carbon-fiber blades on which he runs, has canceled all his upcoming racing appearances, his agent said Sunday night.

The decision was made to "allow Oscar to concentrate on the upcoming legal proceedings and to help and support all those involved as they try to come to terms with this very difficult and distressing situation," Van Zyl, of In Site Athlete Management, said in a statement.

Pistorius' father was quoted overnight in the South African paper The Sunday Times saying his countrymen are destroying a national icon.

Read More..