Opera embraces WebKit in browser brain transplant

Opera CTO Håkon Wium Lie

(Credit:
Stephen Shankland/CNET)

Opera Software, an independent voice in the browser market since the 1990s, will dramatically change its strategy by instead adopting the WebKit browser engine used by Safari and Chrome.

The Norwegian company announced the move today and said it will show off the first fruits of the work with a WebKit-based version of its
Android browser at the Mobile World Congress show in less than two weeks. But the company will move to WebKit for its desktop browser, too.

A browser engine processes the Web page instructions written in HTML, JavaScript, and CSS then renders the results on screens. The engine also interactions that are increasingly important as the developer world expands from static Web pages to dynamic Web apps.

Opera Chief Technology Officer Håkon Wium Lie described the company's motives in a statement:

The WebKit engine is already very good, and we aim to take part in making it even better. It supports the standards we care about, and it has the performance we need. It makes more sense to have our experts working with the open source communities to further improve WebKit and Chromium, rather than developing our own rendering engine further. Opera will contribute to the WebKit and Chromium projects, and we have already submitted our first set of patches: to improve multi-column layout.

Hints of Opera's WebKit work emerged with a mobile-browser project called ICE in January, but today's news is a much more sweeping change than just a single product. Opera said it will move gradually to the WebKit for "most of its upcoming versions of browsers for smartphones and computers." It's not immediately clear which products will continue to use Opera's in-house technology, and Opera declined to say which.

Opera has struggled to keep its fifth-place ranking in the browser usage, but it's certainly not irrelevant. The company also announced today that 300 million people use its browsers each month.

But there are difficult trends the company must face. On mobile devices, Opera Mini is a strong contender, but its popularity is chiefly on lower-end phones; iOS and Android devices come with their own WebKit-based browsers. On personal computers, Google's Chrome rose from nowhere in a few years, quickly surpassing Opera and
Safari, while Microsoft by some measures has reversed declines in its share of browser usage.

Although ditching its in-house Presto browser engine raises the possibility of engineering layoffs, Opera spokeswoman Zara Lauder took an optimistic tone when asked about it.

"We have never had more people at Opera working on our products than right now, and we look forward to contributing to WebKit," Lauder said. "This change has been some time in the making, and all hands are now hard at work on making the best possible browser for our users."

Although Opera's profile is lower than that of many rivals, it's still functioning financially. During the company's third quarter of 2012, the most recent for which financial results are available, Opera reported revenue grew 40 percent to $56 million, and its profit was $6.5 million. Its revenue sources include payments from search traffic it drives to partners including Google and Yandex, its own advertising technology, and partnerships with mobile network operators.

The WebKit project began as the KHTML engine used in the KDE project to supply Linux with a polished user interface and a host of software utilities, but Apple became its chief sponsor when it based OS X's WebKit on the project. WebKit got another major boost with Google's embrace.

Adobe Systems now is also contributing as it moves to recreate many of Flash Player's abilities without requiring the browser plug-in, and WebKit also is used in the browsers of BlackBerry OS and Samsung's Bada.

One notable consequence of moving to WebKit is that Opera will be able to more easily support the large and growing number of iOS devices. Apple rules prohibit browser engines besides a version of WebKit that Apple itself supplies (and incidentally, that runs slower than the version Safari on iOS itself uses). Google's Chrome for iOS uses this Apple-supplied version of WebKit, and Opera would be able to make such a move more easily if its own browser used WebKit, too.

WebKit is not a single, unified project, though. For example, Chrome and Safari differ dramatically under the covers in how they execute the JavaScript programs on Web pages. Chrome uses Google's V8 JavaScript engine, whereas Safari uses a different one called Nitro. Opera said it will use V8.

Another consequence of Opera's change is that developers could have an easier time supporting browsers. Although independent testing will still be required, Web pages likely will be easier to write and test -- especially advanced ones using newer features such as animations and "responsive" design that can handle a wide variety of screen types.

With Opera throwing in the towel on its own Presto engine technology, the bulk of the browser market will be reduced to using three primary engines: WebKit, Microsoft's Trident, and Mozilla's Gecko.

Lie also announced Opera's move on the WebKit mailing list.

"Switching from Presto to WebKit frees up resources and allows us to contribute to the WebKit platform," Lie said.

Being part of WebKit potentially gives Opera more clout in the standards world, because it can build experiments that are more easily tested and adopted by fellow WebKit members. That, in turn, makes it easier to formalize new ideas into actual standards.

Opera has begun work on first such standard through WebKit, an approach at Web page layouts that handle multiple columns of text and graphics more easily. Opera has begun submitting patches for the multicolumn layout idea.

"We have experimented with combining multicol layout with page floats and column spans; in 10 lines of CSS code one can create amazingly beautiful, scalable, and responsive paged
presentations," Lie said.

Opera's move from Presto to WebKit arguably give the company a lot more engineering breathing room, since it can share labor with other browser makers instead of pulling all its own weight. But not everybody was happy to hear the news.

"Sad day for my former team at Opera and for the Web to lose a rendering engine," tweeted Anne van Kesteren, who for years worked on standards issues at Opera.

Updated at 12:53 a.m. PT and 1:37 a.m. PT
with further details and comment from Opera.

Opera's revenue continues to steadily grow even as it faces the challenges of being the fifth-ranked browser.

(Credit:
Opera Software)

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Obama Pledges U.S. Action on Climate, With or Without Congress

If there were anything in President Barack Obama's State of the Union to give hope to wistful environmentalists, it was the unprecedented promise to confront climate change with or without Congress, and to pursue new energy technology in the process.

Following his strong statements in his inaugural address about the ripeness of the moment to address a changing climate, Obama outlined a series of proposals to do it. Recognizing that the 12 hottest years on record all occurred in the last decade and a half, Obama said his most ambitious goal would be a "bipartisan, market-based solution," similar to the cap-and-trade system that died in Congress during his first term.(See related story: "California Tackles Climate Change, But Will Others Follow?")

But without legislative action, Obama threatened to act himself using executive authority. "I will direct my Cabinet to come up with executive actions we can take, now and in the future, to reduce pollution, prepare our communities for the consequences of climate change, and speed the transition to more sustainable sources of energy," he said. That will translate, White House officials said earlier in the week, to new regulations for existing coal-burning power plants and directives to promote energy efficiency and new technology research. (See related story: "How Bold a Path on Climate Change in Obama's State of the Union?")

The effort isn't one that can be stalled, he noted. Not just because of a warming planet, but also because of international competition from countries like China and parts of Western Europe that have gone "all in" on clean energy.

Energy experts signaled support of Obama's comments on energy security, including a plan for an Energy Security Trust to use revenue from oil and gas production on public lands to fund new energy research. "Clean energy businesses commend the president for reaffirming his commitment to reduce greenhouse gas emissions and to address the damaging and costly impacts of climate change," Lisa Jacobson, president of Business Council for Sustainable Energy, said in a statement. The influential League of Conservation Voters perked up to Obama's vow to act on climate change, even if alone.

Noticeably unmentioned in the speech was the Keystone XL pipeline that would carry oil from Canadian tar sands to the refining centers of Texas. Environmentalists have urged Obama to reject the project's application for federal approval in order to hold the line against carbon-intensive production from the oil sands. (See related blog post: "Obama and Keystone XL: The Moment of Truth?") Energy analysts believe Obama is likely to approve the project in the coming weeks, yet at the same time offer new regulations on domestic oil and natural gas development.

Other environmental analysts took Obama's remarks as simple talk, so far not backed by action. “How many times do we have to have the problem described?” David Yarnold, president of the Audubon Society said after the speech. “Smarter standards for coal-fired power plants are the quickest path to a cleaner future, and the president can make that happen right now.”

Obama's path toward accomplishing those goals will likely be lonely. In the Republican rebuttal to Obama's speech, Florida Senator Marco Rubio sidelined climate change as an issue of concern and highlighted the deep partisan distrust. "When we point out that no matter how many job-killing laws we pass, our government can’t control the weather, he accuses us of wanting dirty water and dirty air," Rubio said. He echoed the long-held Republican concern that remaking an economy may not be the wisest way to confront the problem of extreme weather.

Central to Obama's efforts will be his nominees to lead the Environmental Protection Agency and the Department of Energy in his second term. Both roles were at times attacked over his first term, notably when EPA instituted new air and water regulations and DOE was caught making a bad investment in the now-defunct solar manufacturer Solyndra. If the tone of his State of the Union offers a blueprint, he'll choose people unafraid to act.

This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.

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Charred Human Remains Found in Burned Cabin

Investigators have located charred human remains in the burned out cabin where they believe suspected cop killer and ex-LAPD officer Christopher Dorner was holed up as the structure burned to the ground, police said.

The human remains were found within the debris of the burned cabin and identification will be attempted through forensic means, the San Bernardino County Sheriff-Coroner Department said in a press release early this morning.

Dorner barricaded himself in the cabin in the San Bernardino Mountains near Big Bear Tuesday afternoon after engaging in a gunfight with police, killing one officer and injuring another, the San Bernardino County Sheriff's Department said.

Cindy Bachman, spokeswoman for the San Bernardino County Sheriff's Department, which is the lead agency in the action, said Tuesday night investigators would remain at the site all night.

FULL COVERAGE: Christopher Dorner Manhunt

When Bachman was asked if police thought Dorner was in the burning cabin, she said, "Right… We believe that the person that barricaded himself inside the cabin engaged in gunfire with our deputies and other law enforcement officers is still inside there, even though the building burned."

Bachman spoke shortly after the Los Angeles Police Department denied earlier reports that a body was found in the cabin, contradicting what law enforcement sources told ABC News and other news organizations.

Police around the cabin told ABC News they saw Dorner enter but never leave the building as it was consumed by flames, creating a billowing column of black smoke seen for miles.

A press conference is scheduled for later today in San Bernardino.

Christopher Dorner Manhunt: Police Exchange Fire With Possible Suspect Watch Video

Fugitive Ex-Cop Believed Barricaded in Cabin, California Cops Say Watch Video

One sheriff's deputy was killed in a shootout with Dorner earlier Tuesday afternoon, believed to be his fourth victim after killing a Riverside police officer and two other people this month, including the daughter of a former police captain, and promising to kill many more in an online manifesto.

PHOTOS: Former LAPD Officer Suspected in Shootings

Cops said they heard a single gunshot go off from inside the cabin just as they began to see smoke and fire. Later they heard the sound of more gunshots, the sound of ammunition being ignited by the heat of the blaze, law enforcement officials said.

Police did not enter the building, but exchanged fire with Dorner and shot tear gas into the building.

One of the largest dragnets in recent history, which led police to follow clues across the West and into Mexico, apparently ended just miles from where Dorner's trail went cold last week.

Sources tell ABC News it all began at 12:20 p.m. PT Tuesday, when a maid working at a local resort called 911, saying she and another worker had been tied up and held hostage by Dorner in a cabin.

The maid told police she was able to escape, but Dorner had stolen one of their cars, which was identified as a purple Nissan.

San Bernardino Sheriff's Office and state Fish and Game officers spotted the stolen vehicle and engaged in a shootout with Dorner.

Officials say Dorner crashed the stolen vehicle and fled on foot only to commandeer Rick Heltebrake's white pick-up truck on a nearby road a short time later.

"[Dorner] said, 'I don't want to hurt you, just get out and start walking up the road and take your dog with you.' He was calm. I was calm. I would say I was in fear for my life, there was no panic, he told me what to do and I did it," Heltebrake said.

"He was dressed in all camouflage, had a big assault sniper-type rifle. He had a vest on like a ballistic vest," Heltebrake added.

Ten seconds later, Heltebrake said, a "volume of gunfire" could be heard.

Sources tell ABC News the gunfire was from Dorner who exchanged fire with two deputies.

The two deputies were wounded in the firefight and airlifted to a nearby hospital, where one died, police said. The second deputy was in surgery and was expected to survive, police said.

Police sealed all the roads into the area, preventing cars from entering the area and searching all of those on the way out. All schools were briefly placed on lockdown.

Believing that Dorner might have been watching reports of the standoff, authorities asked media not to broadcast images of police surrounding the cabin, but sent him a message.

"If he's watching this, the message ... is: Enough is enough. It's time to turn yourself in. It's time to stop the bloodshed. It's time to let this event and let this incident be over," said Los Angeles Police Department spokesman Andy Smith, told reporters at a press conference Tuesday.

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Algorithm learns how to revive lost languages

Like living things, languages evolve. Words mutate, sounds shift, and new tongues arise from old.

Charting this landscape is usually done through manual research. But now a computer has been taught to reconstruct lost languages using the sounds uttered by those who speak their modern successors.

Alexandre Bouchard-Côté at the University of British Columbia in Vancouver, Canada, and colleagues have developed a machine-learning algorithm that uses rules about how the sounds of words can vary to infer the most likely phonetic changes behind a language's divergence.

For example, in a recent change known as the Canadian Shift, many Canadians now say "aboot" instead of "about". "It happens in all words with a similar sound," says Bouchard-Côté.

The team applied the technique to thousands of word pairings used across 637 Austronesian languages – the family that includes Fijian, Hawaiian and Tongan.

Tracking human history

The system was able to suggest how ancestor languages might have sounded and also identify which sounds were most likely to change. When the team compared the results with work done by human specialists, they found that over 85 per cent of suggestions were within a single character of the actual words.

For example, the modern word for "wind" in Fijiian is cagi . Using this and the same word in other modern Austronesian languages, the automatic system reconstructed the ancestor word beliu and the human experts reconstructed bali.

Reconstructing ancient languages can reveal details of our ancient history. Looking at when the word for "wheel" diverges in the family tree of European languages helps us date the human settlement of different parts of the continent, for instance.

The technique could improve machine translation of phonetically similar languages, such as Portuguese and French.

Endangered languages could also be preserved if they are phonetically related to more widely spoken tongues, says Bouchard-Côté. He is now working on an online version of the tool for linguists to use.

Journal: PNAS, 10.1073/pnas.1204678110

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North Korea threatens "stronger" action after nuke test

SEOUL: North Korea said its nuclear test on Tuesday was only a "first" step and warned of stronger action if it was faced with tougher sanctions as a result.

"The latest nuclear test was only the first action, with which we exercised as much self-restraint as possible," the foreign ministry said in a statement carried by the country's official news agency.

"If the US further complicates the situation with continued hostility, we will be left with no choice but to take even stronger second or third rounds of action," it said without elaborating.

The statement came just hours after South Korea's spy agency chief warned Pyongyang might carry out another nuclear test or ballistic missile launch in the coming days or weeks.

North Korea said Tuesday's test was directly targeted at the United States. It accuses Washington of inciting global condemnation of its nuclear programme and of leading the sanctions charge in the UN Security Council.

The ministry statement said any measure like forced ship inspections or a sea blockade would be considered an "act or war" and trigger "merciless retaliations".

The UN Security Council was scheduled to meet in emergency session later Tuesday to discuss the international response to the latest test.

"The US should make a choice between taking the path of easing tension... or continuing on its current, wrong path of pursuing anti-DPRK (North Korea) policies and further escalating tensions," the ministry said.

- AFP/al

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Kumbh Mela: Pictures From the Hindu Holy Festival

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  Holy Bath

  Photograph by Roberto Schmidt, AFP/Getty Images

  The Hindu festival known as Kumbh Mela, often referred to as the world’s largest gathering of humanity, peaked on Sunday at the meeting of the Yamuna, Ganges, and mythical Saraswati rivers. The festival in the northern Indian city of Allahabad sees tens of millions of pilgrims bathe in the Ganges to wash away sins. Pilgrims and saints pray as they soak.

  Published February 11, 2013

  
  











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  New Initiates

  Photograph by Sheeraz Rizvi, Hindustan Times/Getty Images

  Newly initiated Hindu ascetics perform rituals during the Kumbh Mela in Allahabad. The festival happens every three years in one of four Indian cities, with the event in Allahabad considered the holiest. It’s also the biggest.

  Published February 11, 2013

  
  











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  Sacred Fire

  Photograph by Daniel Berehulak, Getty Images

  Hindu priests perform a ceremony beside the Ganges River during the Kumbh Mela in Allahabad. The festival lasts 55 days.

  Published February 11, 2013

  
  











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  River Sitting

  Photograph by Baciu Cristian, Demotix/Corbis

  A Hindu ascetic performs a ritual last month during the 2013 Kumbh Mela.

  Published February 11, 2013

  
  











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  Bridge Crossings

  Photograph by Manish Swarup, AP

  Believers walk on pontoon bridges to take a dip at the confluence of the Ganges, Yamuna, and mythical Saraswati Rivers, a site known as Sangam. The processions are led by heads of monasteries and by naked ascetics smeared with ash.

  Published February 11, 2013

  
  











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  Stampede Victim

  Photograph by Manan Vatsyayana, AFP/Getty Images

  A woman injured in a Sunday stampede that left 36 dead in Allahabad lies in a hospital bed in the city. There are conflicting accounts of what provoked the stampede.

  Published February 11, 2013

  
  











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  Train Rush

  Photograph by Daniel Berehulak, Getty Images

  Hindu devotees at the Allahabad train station press toward an arriving train.

  Published February 11, 2013

  
  











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  Train Station Prayer

  Photograph by Daniel Berehulak, Getty Images

  A Hindu believer waits for a train at the Allahabad train station, the site of Sunday’s stampede.

  Published February 11, 2013

  
  

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Great Energy Challenge Blog

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Why we're building a €1 billion model of a human brain

The Human Brain Project has just won a €1 billion research prize. Its director Henry Markram says the initiative will unify our understanding of the brain

Your project aims to recreate the human brain in a supercomputer. Why?
We want to reach a unified understanding of the brain and the simulation on a supercomputer is the tool. Today you have neuroscientists working on a genetic, behavioural or cognitive level, and then you have informaticians, chemists and mathematicians. They all have their own understanding of how the brain functions and is structured. How do you get them all around the same table? We think of the project as like a CERN for the brain. The model is our way of bringing everyone, and our understanding, together.

What do you hope will come of the project?
There are three goals. As the model becomes more accurate and behaves more like a brain, we could couple it to a robot and see the robot learning. Then we'll be able to trace the chain of events from molecules to cognition.

Second, we plan to collect data from hospitals around the world to search for biological signatures of disease. We believe this will give us a new classification of brain disease, which can be used to diagnose people objectively - not solely based on their symptoms.

And finally, we want to build neuromorphic computers, which would have processors that can learn, mimicking the way the brain does.

How close are you to recreating a brain?
We've developed an algorithm to work out some of the rules for how to reconstruct the brain. We can now make thousands of predictions that when tested are accurate, and we can reconstruct small brain circuits of up to about 1 million rat neurons. Now we've got to connect those groups of neurons to make brain regions, then connect the regions to make a computer model of a whole brain. Once we've modelled a rat brain, then we update the rules and gradually move towards a human model.

Could the model be too detailed?
People are afraid of detail and complexity. But a drug is a molecule. It doesn't hit a cell, or the brain, it hits other molecules. There's no reason why we shouldn't try to explain how all the molecules are interacting with one another. Sheer numbers do not equal complexity. One hundred billion neurons is numbers, not complexity.

What about criticisms that it drains funds from more readily achievable neuroscience?
That is an incredibly short-sighted view of how a big science project impacts the rest of the field. Take the Human Genome Project - you can criticise them for all the promises they made at the time, but we would be in the dark ages now if we hadn't done that project. It has benefitted every biologist and geneticist on the planet today.

Once completed, could the simulated brain ever become conscious?
When we couple the model to a robot, the robot will behave, and we'll see this in the way its neurons are firing. Does that mean it's conscious? That's a philosophical question - and an unresolved one.

This article appeared in print under the headline "One minute with... Henry Markram"

Profile

Henry Markram is the director of the Human Brain Project at the Swiss Federal Institute of Technology in Lausanne (EPFL). The project just won a €1 billion European research prize

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.

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US economy picks up, China might slow: OECD indicator

PARIS: Economic activity in the United States is rising, in the eurozone it is steadying, but in China and India the growth trend is slowing, leading indicators from the OECD showed on Monday.

The Organisation for Economic Cooperation and Development said that its index of leading indicators suggested that economic growth in the United States was "firming".

Activity in Britain was also firming but at a slower pace than seemed to be the case a month ago, the OECD said in its monthly report on composite leading indicators which are considered a reliable pointer to activity in six months' time.

In Japan and Brazil signs were emerging "of growth picking up."

For the 17 members of the eurozone, and notably in Germany and Italy, the leading indicators "point to a stabilisation in growth prospects" but in France "growth is expected to remain weak."

The OECD, which is a policy forum for 34 advanced economies but also monitors some other important economies, said that China and India appeared to be on a growth path but "below trend compared with more positive signals in last month's assessment."

The indicators for Canada and Russia continued to signal growth that was below trend, the OECD said.

-AFP/ac

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Most-viewed tech on CNET right now

Click through to find out where the Asus Transformer Pad Infinity TF700 falls on the list.

We spend a lot of time evaluating tech around here, looking at both the hardware and the software sides, and telling you which products we think are worth your hard-earned dough and which are best avoided. Behind the scenes, we're always keeping an eye on what you're looking at as well. Some gadgets are obviously going to draw a lot of attention, their appearance on the list of most viewed a given, but sometimes a product pops up that surprises us and gives a bit of insight into where consumer trends may be headed.

Without further ado, let's count down the top 20 products that you've clicked on the most over the past four weeks.

 

Featured Posts

Most Popular

Don't Miss

Android, iPhone, Windows Phone 8, BlackBerry? We break down which OS is right for you and why.

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Year of the Snake: The Serpent Behind the Horoscope

On February 10, people all around the world will ring in the Lunar New Year with paper lanterns and firecrackers. At the heart of it all sits the snake, a slithery reptile feared for its sharp fangs and revered for its undeniable charm. (Watch videos of some of the world's deadliest snakes.)

Those born in the Year of the Snake are said to be intelligent and quick thinking, but they can also be dishonest and prone to show off. Though based on Chinese astrology, some of these traits are similar to characteristics of the actual serpent.

Snakes are known to be great at outsmarting their predators and prey. Their colorful, patterned skin makes them some of the best tricksters in the animal kingdom. And despite a bad rap as frightening creatures, snakes never fail to fascinate scientists, explorers, and zoo-goers. (See pictures of snakes.)

With more than 3,400 recognized species, snakes exhibit incredible diversity in everything from behavior and habitats to skin colors and patterns.

"As a vertebrate lacking in limbs, all snakes look largely like other snakes, yet they succeed in tremendous diversity in multiple directions," said Andrew Campbell, herpetology collections manager at the University of Kansas Biodiversity Institute.

To usher in the Year of the Snake, Campbell and herpetologist Dennis Ferraro at University of Nebraska-Lincoln weigh in on some of the snake's qualities that the Chinese zodiac predicts people born this year will have.

Horoscope: Snakes have an innately elegant personality but can also be ostentatious at times.

In Nature: Snakes come in all different colors, patterns, and textures, making them some of nature's most visually stunning creatures.

According to Campbell, the utility of their coloring falls into two main categories: to use as camouflage and to warn predators to stay away.

Among the most beautiful are the emerald tree boa (Corallus caninus)—whose vibrant green body is decorated with white stripes resembling lightning bolts—and the Brazilian rainbow boa (Epicrates cenchria), characterized by its iridescent skin and the large black rings down its back.

For some snakes, the diversity in color occurs within the same species, which is why Ferraro tells his student not to identify snakes by colors. For example, the polymorphic bush viper (Atheris squamigera), many of which are green, also come in shades of yellow, orange, red, and blue, as captured in photographer Guido Mocafico's "Serpent Still Life" photo series.

Horoscope: The snake is known to be the master seducer of the Chinese zodiac.

In Nature: Female garter snakes (Thamnophis) have all the luck with the gentlemen.

When a female garter snake is ready to mate, she announces it by producing chemicals called pheromones. Males, upon encountering the scent, immediately come crawling out and gather around the female in a large, wriggling "mating ball."

The competition intensifies when a male passing by the ball tries to fool the others by producing a scent that mimics that of the female, said Ferraro.

As soon as his rivals are led off in the wrong direction, the trickster slides right in. In areas with smaller populations of garter snakes, each ball consists of about 12 males and one female.

But in places like Manitoba, Canada, where garter snakes travel to certain areas to mate after coming out of hibernation, a mating ball can have thousands of males and only a hundred females.

Horoscope: Though snakes don't often tell lies, they will use deception when they feel it's necessary and they think they can get away with it.

In Nature: When it comes to using trickery to catch dinner, or to hide from predators, snakes are no amateurs.

Their sneaky techniques range from tricking fish to swim right into their mouths, to playing dead when threatened, to using their wormlike tails to lure in prey.

The most cunning of them all is the two-headed snake. To protect against a sneak attack from behind, the two-headed snake's tail looks just like its head. While the business end looks for food, the snake coils up its body and rests its tail on top to look like it is on guard.

The tail can even mimic the behavior of a retreating snake to trick predators into thinking they're going face-to-face with their opponent.

Horoscope: When snakes get down to work, they are organized and highly efficient, and they work quickly and quietly.

In Nature: While snakes are often perceived as lazy, Campbell said people are mistaken. "What we perceive as shy, lazy, or inactive is really efficiency," he said.

"On average, they are bigger than other lizards and can build a lot of body mass. They do that by being efficient in feeding and traveling." In other words, snakes don't move very much because they don't have to.

When it comes to food, snakes catch prey that are significantly larger than them so they can eat less frequently. This reduces the time they spend hunting and thus makes them less vulnerable to falling victim to a predator themselves.

For Campbell, the most impressive hunter is the eastern diamondback rattlesnake (Crotalus Adamanteus), which is able to hunt and kill its prey very quickly using venom, so it doesn't have to travel far. "Because they don't have to do that, they can become relatively large and heavy, being able to build up body mass and not having to spend that energy hunting."

Horoscope: Snakes are charming, with excellent communication skills.

In Nturea: For snakes, their visual and auditory senses don't mean much when it comes to communicating with each other.

Instead, they use their sense of smell and the chemicals produced by their musk glands. Unlike mammals, a snake picks up scent through the forks of its tongue.

When the snake retracts its tongue, it inserts the forks into grooves in an olfactory organ located at the roof of its mouth. Depending on which fork picks up a stronger scent, the snake knows in which direction to go when looking for prey or a mate.

It's when snakes are threatened that they use sight and sound, said Ferraro. Rattlesnakes, for example, shake their tails, making a loud rattling noise to ward off predators.

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