Sharks Warn Off Predators By Wielding Light Sabers

Diminutive deep-sea sharks illuminate spines on their backs like light sabers to warn potential predators that they could get a sharp mouthful, a new study suggests.

Paradoxically, the sharks seem to produce light both to hide and to be conspicuous—a first in the world of glowing sharks. (See photos of other sea creatures that glow.)

"Three years ago we showed that velvet belly lanternsharks [(Etmopterus spinax)] are using counter-illumination," said lead study author Julien Claes, a biologist from Belgium's Catholic University of Louvain, by email.

In counter-illumination, the lanternsharks, like many deep-sea animals, light up their undersides in order to disguise their silhouette when seen from below. Brighter bellies blend in with the light filtering down from the surface. (Related: "Glowing Pygmy Shark Lights Up to Fade Away.")

Fishing the 2-foot-long (60-centimeter-long) lanternsharks up from Norwegian fjords and placing them in darkened aquarium tanks, the researchers noticed that not only do the sharks' bellies glow, but they also had glowing regions on their backs.

The sharks have two rows of light-emitting cells, called photophores, on either side of a fearsome spine on the front edges of their two dorsal fins.

Study co-author Jérôme Mallefet explained how handling the sharks and encountering their aggressive behavior hinted at the role these radiant spines play.

"Sometimes they flip around and try to hit you with their spines," said Mallefet, also from Belgium's Catholic University of Louvain. "So we thought maybe they are showing their weapon in the dark depths."

To investigate this idea, the authors analyzed the structure of the lanternshark spines and found that they were more translucent than other shark spines.

This allowed the spines to transmit around 10 percent of the light from the glowing photophores, the study said.

For Predators' Eyes Only

Based on the eyesight of various deep-sea animals, the researchers estimated that the sharks' glowing spines were visible from several meters away to predators that include harbor seals (Phoca vitulina), harbor porpoises (Phocoena phocoena), and blackmouth catsharks (Galeus melastomus).

"The spine-associated bioluminescence has all the characteristics to play the right role as a warning sign," said Mallefet.

"It's a magnificent way to say 'hello, here I am, but beware I have spines,'" he added.

But these luminous warning signals wouldn't impede the sharks' pursuit of their favorite prey, Mueller's bristle-mouth fish (Maurolicus muelleri), the study suggested. These fish have poorer vision than the sharks' predators and may only spot the sharks' dorsal illuminations at much closer range.

For now, it remains a mystery how the sharks create and control the lights on their backs. The glowing dorsal fins could respond to the same hormones that control the belly lights, suggested Mallefet, but other factors may also be involved.

"MacGyver" of Bioluminescence

Several other species use bioluminescence as a warning signal, including marine snails (Hinea brasiliana), glowworms (Lampyris noctiluca) and millipedes (Motyxia spp.).

Edith Widder, a marinebiologist from the Ocean Research and Conservation Association who was not involved in the current study, previously discovered a jellyfish whose bioluminescence rubs off on attackers that get too close.

"It's like paint packages in money bags at banks," she explained.

"Any animal that was foolish enough to go after it," she added "gets smeared all over with glowing particles that make it easy prey for its predators."

Widder also points out that glowing deep-sea animals often put their abilities to diverse uses. (Watch: "Why Deep-Sea Creatures Glow.")

"There are many examples of animals using bioluminescence for a whole range of different functions," she said.

Mallefet agrees, joking that these sharks are the "MacGyver of bioluminescence."

"Just give light to this shark species and it will use it in any possible way."

And while Widder doesn't discount the warning signal theory, "another possibility would be that it could be to attract a mate."

Lead author Julien Claes added by email, "I also discovered during my PhD thesis that velvet belly lanternsharks have glowing organs on their sexual parts."

And that, he admits, "makes it very easy, even for a human, to distinguish male and female of this species in the dark!"

The glowing shark study appeared online in the February 21 edition of Scientific Reports.

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Americans Targeted for Allegedly Running Underage Prostitution in Philippines

Arthur Benjamin is sitting at the edge of a small stage, wearing a lavender Hawaiian shirt and nursing a bottle of San Miguel Light beer. The 6-foot-6 mustachioed Texan lazily watches the half dozen or so girls dancing rather unenergetically around the stage's pole.

"I forgot your gift again, it's in the car," Benjamin says to one of the girls on stage, shouting above the pop music blaring from the speaker system.

The small, dingy bar, which Benjamin says he owns, is called Crow Bar. It's in a rundown part of the picturesque Subic Bay in the western Philippines, about a three hour drive from the capital, Manila. Home for 50 years to a United States naval base, Subic Bay has become synonymous with foreigners looking for sex in the long string of bars that line the main road along the coast.

Watch the full story on "Nightline" TONIGHT at 12:35 a.m. ET

The bars in this area are often packed with older foreign men ogling the young Filipina women available for the night for a "bar fine" of around 1,500 Filipino pesos, or just over $35. Many of the bars are owned and operated by Americans, often former military servicemen who either served on the base or whose ships docked here until the base was shuttered under political pressure in 1992.

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Most of the prostitutes working in the bars are indeed 18 or older. But in the Philippines, just a small scratch to the surface can reveal a layer of young, underage girls who have mostly come from impoverished rural provinces to sell their bodies to help support their families.

Benjamin, 49, is, according to his own statements, one of the countless foreigners who has moved beyond just having sex with underage girls to owning and operating a bar where girls in scantily-clad outfits flaunt their bodies for patrons.

"My wife recently found out that I have this place," he tells an ABC News "Nightline" team, unaware they are journalists and recording the conversation on tiny hidden cameras disguised as shirt buttons.

Benjamin said that a "disgruntled waitress" had written his wife on Facebook, detailing his activities in Subic Bay.

"She sent her this thing saying that I have underage girls who stayed with me, that I [have anal sex with them], I own a bar, I've got other girls that I'm putting through high school, all this other crap," he said.

"All of which is true," he laughed. "However, I have to deny."

He sends a text message summoning his current girlfriend, a petite dark-skinned girl called Jade, who he said is just 16 years old. Benjamin says he bought the bar for her about a year ago and while most still call it Crow Bar, he officially re-named it with her last name.

"She needed a place to stay, I needed a place to do her. I bought a bar for her," he says, explaining that she lives in a house out back by the beach.

"You're not going to find anything like this in the States, not as a guy my age," he said as he looked down at Jade. "Ain't going to happen."

Benjamin is the latest target of Father Shay Cullen, a Catholic priest with a thick Irish brogue and fluency in the local language, Tagalog. Through his non-profit center called Preda, he's been crusading against underage sex trafficking in the Philippines for 40 years.

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Take my taxi to the moon

Susmita Mohanty, the founder of India’s first private space company, Earth2Orbit, wants India to claim bigger piece of the space-launch pie

How active is India's space programme?
The Indian Space Research Organization (ISRO), which was founded in 1969, launches rockets, builds and uses satellites extensively for earthly applications and has recently started planetary exploration. It tested its first astronaut capsule for atmospheric re-entry in 2007, and is planning to build a residential astronaut training facility. ISRO is also planning a lunar lander mission for 2014 and will launch a mission to Mars this year.

How does your company, Earth2Orbit, fit in with this programme?
We want to commercialise India's space capabilities, in particular the Polar Satellite Launch Vehicle. It is one of the world's most reliable in its class. I want to make it the rocket of choice for international satellite-makers looking to get to low Earth or sun-synchronous orbits. India could build and launch up to six each year, but currently launches only two. We need to step up to full throttle. The same goes for satellites and ground equipment. Over the next decade or two, I think India should be aiming for at least a quarter of the multibillion-dollar global space market, if not more.

What do you think of the way spacecraft for carrying humans are currently designed?
The way the world aerospace industry is set up, it is closely linked to the defence sector – they share the technology, the tooling and the cumbersome contractual processes. Unlike commercial automobile or consumer-product companies, where the end user is the primary design driver, aerospace companies tend to please government customers. As a result, we often end up with over-engineered, under-designed crew craft with an exorbitant price tag.

How can we improve on these designs?
I want us to push the boundaries of technology and design and build intelligent spaceships – spaceships that think. Imagine if an international consortium of companies such as Apple, Samsung, Pininfarina, Space X and MIT Media Lab got together to design and build a spaceship! What would it look like? Could it think? Could it self-repair or self-clean? Would it challenge the crew?

The private sector is changing how we get into space. How has the X Prize contributed?
It created a tectonic shift in mindsets and showed how we can accelerate innovation in space exploration without having to spend taxpayer money. The first X Prize led to the first privately funded and designed spaceplane built by Burt Rutan. Then Richard Branson seized the opportunity: if all goes well, Virgin Galactic could fly more people to space in a year than the Russians or Americans have over the past 50 years!

What is next for space travel?
It barely takes 10 minutes to reach low Earth orbit. It probably takes longer for most urbanites to commute to work. I want to be able to "cab it" to low Earth orbit. I am dreaming of private astronaut taxis. The first generation will take paying passengers into orbit. The second generation will ferry us to the moon and Mars.

This article appeared in print under the headline "One minute with... Susmita Mohanty"

Profile

Susmita Mohanty is CEO of Earth2Orbit, which recently launched its first client satellite. She has worked at NASA and Boeing, and holds a PhD in aerospace architecture

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Asia to get almost 10,000 planes over 20 years: Airbus

SINGAPORE: Asia-Pacific carriers will take delivery of 9,870 new passenger and cargo aircraft valued at US$1.6 trillion over the next 20 years, European plane manufacturer Airbus said Monday.

The region will account for 35 percent of aircraft deliveries worldwide and 40 percent of the market in terms of value during the period, putting it ahead of Europe and North America, Airbus said in a statement.

Airbus expects a total of 28,200 new aircraft deliveries globally with a market value of US$4.0 trillion in the next 20 years.

"Everything is going to grow, but the shift to Asia-Pacific in terms of market share and market presence is going to be enormous," said Airbus chief operating officer John Leahy.

"Growing economies, bigger cities and increasing wealth will see more people flying, driving the need for larger and more efficient aircraft," he told journalists in Singapore.

Emerging markets like China and India as well as the growing middle class in the region are powering demand for new aircraft, Leahy said, with Asia-Pacific carriers favouring wide-body models.

The size of the middle class in the Asia-Pacific region is expected to increase fivefold from 746 million in 2011 to 3.4 billion in 2031, according to estimates cited by Airbus.

In contrast, the number of people making up the middle class in North America is expected to drop while a modest increase is predicted for Europe during the 20-year period.

Domestic travel in the United States, which currently holds the largest share of world passenger traffic, is also expected to be matched by travel within China in 2031 at 10.4 percent of the global total.

-AFP/fl

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Picture Archive: Dorothy Lamour and Jiggs, Circa 1938

Dorothy Lamour, most famous for her Road to ... series of movies with Bing Crosby and Bob Hope, never won an Oscar. In her 50-plus-year career as an actress, she never even got nominated.

Neither did Jiggs the chimpanzee, pictured here with Lamour on the set of Her Jungle Love in a photo published in the 1938 National Geographic story "Monkey Folk."

No animal has ever been nominated for an Oscar. According to Academy Award rules, only actors and actresses are eligible.

Uggie, the Jack Russell terrier from last year's best picture winner, The Artist, didn't rate a nod. The equines that portrayed Seabiscuit and War Horse, movies that were best picture contenders in their respective years, were also snubbed.

Even the seven piglets that played Babe, the eponymous star of the best picture nominee in 1998, didn't rate. And the outlook seems to be worsening for the animal kingdom's odds of ever getting its paws on that golden statuette.

This year, two movies nominated in the best picture category had creatures that were storyline drivers with significant on-screen time. Neither Beasts of the Southern Wild (which featured extinct aurochs) or Life of Pi (which featured a CGI Bengal tiger named Richard Parker) used real animals.

An Oscar's not the only way for animals to get ahead, though. Two years after this photo was published, the American Humane Association's Los Angeles Film & TV Unit was established to monitor and protect animals working on show business sets. The group's creation was spurred by the death of a horse during the filming of 1939's Jessie James.

Today, it's still the only organization that stamps "No Animals Were Harmed" onto a movie's closing credits.

Editor's note: This is part of a series of pieces that looks at the news through the lens of the National Geographic photo archives.

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New blood test finds elusive fetal gene problem

A NEW non-invasive blood test for pregnant women could make it easier to catch abnormalities before their child is born.

Human cells should have two copies of each chromosome but sometimes the division is uneven. Existing tests count the fragments of placental DNA in the mother's blood. If the fragments from one chromosome are unusually abundant, it might be because the fetus has an extra copy of that chromosome. But triploidy, where there are three copies of every chromosome, is missed, since the proportion of fragments from each chromosome is the same.

California-based company Natera uses an algorithm to calculate the most likely genotype for the fetus. To do this it looks at single letter variations called SNPs in the parents and compares this to a database of the most common SNPs patterns in the population. This genotype is then compared with placental DNA.

This approach can catch triploidy since the whole fetal genotype is the reference rather than a single chromosome. The method was presented last week at the Society for Maternal-Fetal Medicine in San Francisco.

This article appeared in print under the headline "No hiding place for fetal gene errors"

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Elderly Abandoned at World's Largest Religious Festival

Every 12 years, the northern Indian city of Allahabad plays host to a vast gathering of Hindu pilgrims called the Maha Kumbh Mela. This year, Allahabad is expected to host an estimated 80 million pilgrims between January and March. (See Kumbh Mela: Pictures From the Hindu Holy Festival)

People come to Allahabad to wash away their sins in the sacred River Ganges. For many it's the realization of their life's goal, and they emerge feeling joyful and rejuvenated. But there is also a darker side to the world's largest religious gathering, as some take advantage of the swirling crowds to abandon elderly relatives.

"They wait for this Maha Kumbh because many people are there so nobody will know," said one human rights activist who has helped people in this predicament and who wished to remain anonymous. "Old people have become useless, they don't want to look after them, so they leave them and go."

Anshu Malviya, an Allahabad-based social worker, confirmed that both men and women have been abandoned during the religious event, though it has happened more often to elderly widows. Numbers are hard to come by, since many people genuinely become separated from their groups in the crowd, and those who have been abandoned may not admit it. But Malviya estimates that dozens of people are deliberately abandoned during a Maha Kumbh Mela, at a very rough guess.

To a foreigner, it seems puzzling that these people are not capable of finding their own way home. Malviya smiles. "If you were Indian," he said, "you wouldn't be puzzled. Often they have never left their homes. They are not educated, they don't work. A lot of the time they don't even know which district their village is in."

Once the crowd disperses and the volunteer-run lost-and-found camps that provide temporary respite have packed away their tents, the abandoned elderly may have the option of entering a government-run shelter. Conditions are notoriously bad in these homes, however, and many prefer to remain on the streets, begging. Some gravitate to other holy cities such as Varanasi or Vrindavan where, if they're lucky, they are taken in by temples or charity-funded shelters.

In these cities, they join a much larger population, predominantly women, whose families no longer wish to support them, and who have been brought there because, in the Hindu religion, to die in these holy cities is to achieve moksha or Nirvana. Mohini Giri, a Delhi-based campaigner for women's rights and former chair of India's National Commission for Women, estimates that there are 10,000 such women in Varanasi and 16,000 in Vrindavan.

But even these women are just the tip of the iceberg, says economist Jean Drèze of the University of Allahabad, who has campaigned on social issues in India since 1979. "For one woman who has been explicitly parked in Vrindavan or Varanasi, there are a thousand or ten thousand who are living next door to their sons and are as good as abandoned, literally kept on a starvation diet," he said.

According to the Hindu ideal, a woman should be looked after until the end of her life by her male relatives—with responsibility for her shifting from her father to her husband to her son. But Martha Chen, a lecturer in public policy at Harvard University who published a study of widows in India in 2001, found that the reality was often very different.

Chen's survey of 562 widows of different ages revealed that about half of them were supporting themselves in households that did not include an adult male—either living alone, or with young children or other single women. Many of those who did live with their families reported harassment or even violence.

According to Drèze, the situation hasn't changed since Chen's study, despite the economic growth that has taken place in India, because widows remain vulnerable due to their lack of education and employment. In 2010, the World Bank reported that only 29 percent of the Indian workforce was female. Moreover, despite changes in the law designed to protect women's rights to property, in practice sons predominantly inherit from their parents—leaving women eternally dependent on men. In a country where 37 percent of the population still lives below the poverty line, elderly dependent relatives fall low on many people's lists of priorities.

This bleak picture is all too familiar to Devshran Singh, who oversees the Durga Kund old people's home in Varanasi. People don't pay toward the upkeep of their relatives, he said, and they rarely visit. In one case, a doctor brought an old woman to Durga Kund claiming she had been abandoned. After he had gone, the woman revealed that the doctor was her son. "In modern life," said Singh, "people don't have time for their elderly."

Drèze is currently campaigning for pensions for the elderly, including widows. Giri is working to make more women aware of their rights. And most experts agree that education, which is increasingly accessible to girls in India, will help improve women's plight. "Education is a big force of social change," said Drèze. "There's no doubt about that."

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Las Vegas Strip Shooting Suspect ID'd

Las Vegas police identified a suspect today in a shooting on the strip that caused a Maserati to hit a taxi and burst into flames, killing three people.

Ammar Harris, 26, has been named a suspect in the Thursday skirmish that killed three people, including rapper Kenny Clutch.

The altercation between Harris and Clutch, 27, whose legal name was Kenneth Cherry Jr., is believed to have originated in the valet area of a Las Vegas hotel, police said.

Police said Harris fired several rounds into a Maserati that was being driven by Cherry as both vehicles continued northbound on glitzy Las Vegas Boulevard.

The rapper's expensive sports car careened out of control after he was shot, slamming into several cars, including a taxi. The impact caused the cab to burst into flames, killing the driver, Michael Boldon and a female passenger. Witnesses said it looked like the car exploded.

"He was a number one guy," Carolyn Jean Trimble, Boldon's sister, told ABC News.

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"I looked out my window and I could see one vehicle down here on the corner of the intersection totally engulfed in flames," witness John Lamb told ABC News.

Boldon, 62, and his passenger, who has not yet been identified, were both killed, as was Clutch.

Timble said her brother loved driving his taxi around Vegas.

"He came to live with me in Las Vegas last year to help take care of our mother, and the first day he got here he said, 'I have to get a job.' The second day, I came home from work, and he said he got a job," she recalled.

"He says, 'You'll never guess what it is,' and I said, 'what,' and he said, 'taxi cab driver,' and we both fell out laughing," Trimble said. "He loved that job. He never complained. He'd come home and tell me stories about what happened, who he picked up."

Boldon was a single father who raised a 36-year-old son and was a new grandfather. His grandson was named after him, Trimble said.

"Of all the people to take from this earth," she said. "But I guess the Lord needed him."

A passenger in the Maserati was hit and sustained only a minor injury to his arm. Clutch died at University Medical Center.

His father, Kenneth Cherry Sr., expressed his grief for the loss of his son while speaking with ABC News.

"This is something you never really, really ever want to experience as a parent, to lose a child before you go," he said.

Harris is described as 5-foot-11 and 180 pounds. Anyone with information is asked to contact the Las Vegas Metro Police Department's homicide division.

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People in a vegetative state may feel pain

IT IS a nightmare situation. A person diagnosed as being in a vegetative state has an operation without anaesthetic because they cannot feel pain. Except, maybe they can.

Alexandra Markl at the Schön clinic in Bad Aibling, Germany, and colleagues studied people with unresponsive wakefulness syndrome (UWS) – also known as vegetative state – and identified activity in brain areas involved in the emotional aspects of pain. People with UWS can make reflex movements but can't show subjective awareness.

There are two distinct neural networks that work together to create the sensation of pain. The more basic of the two – the sensory-discriminative network – identifies the presence of an unpleasant stimulus. It is the affective network that attaches emotions and subjective feelings to the experience. Crucially, without the activity of the emotional network, your brain detects pain but won't interpret it as unpleasant.

Using PET scans, previous studies have detected activation in the sensory-discriminative network in people with UWS but their findings were consistent with a lack of subjective awareness, the hallmark of the condition.

Now Markl and her colleagues have found evidence of activation in the affective or emotional network too (Brain and Behavior, doi.org/kfs).

Her team gave moderately painful electric shocks to 30 people with UWS, while scanning their brains using fMRI. Sixteen people had some kind of brain activation – seven only in the sensory network but nine in the affective network as well.

These results question whether some diagnoses should change from UWS to minimally conscious, which is characterised by some level of awareness.

"I don't think this paper alone will change the clinical approach to people with diagnoses such as UWS," says Donald Weaver at Dalhousie University in Halifax, Nova Scotia, Canada, who was not involved in the work. But it will encourage future study, he says.

Changing a diagnosis depends on whether neurologists are ready to accept alternative ways of diagnosing disorders of consciousness, says Boris Kotchoubey at the Institute of Medical Psychology and Behavioural Neurobiology in Tübingen, Germany, who worked on the study.

Nonetheless, Kotchoubey is confident that the way people with UWS are cared for will change, even if their diagnoses remain the same. "I know that many doctors working with such patients have been instructed to treat their patients as if they can understand them and perceive at least something in the environment, perhaps pain, pleasure, or emotion," he says.

But not all people are treated this way. Prior to the study, one of the people in Markl's study was given no anaesthesia before a tracheotomy, which involves an incision in the neck to allow breathing without using the nose or mouth. As people with UWS are clinically considered unable to understand pain, doctors do not have to give an anaesthetic.

This article appeared in print under the headline "What if people in a coma feel pain..."

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Chavez "working" from hospital, aide says

CARACAS: Venezuelan President Hugo Chavez is able to work on government issues and is "very energetic" despite being hospitalised and breathing through a tube, a top aide said Saturday.

The 58-year-old president has not been seen or heard from since Monday, when he returned to Caracas from cancer surgery in Cuba.

"The president continues to breathe through a tracheal tube, but he is able to communicate with us through written notes and give us instructions," Vice President Nicolas Maduro told local television.

He said he spent more than five hours with Chavez in his hospital room on Friday, and was able to discuss several issues, specifically military affairs and the economy.

"He was very energetic, had a lot of spirit and vitality, and that's what we wanted to tell the people despite the late hour," Maduro said.

"We have reviewed a number of subjects, and he told us about being extremely happy to be in Caracas, the city of his heart."

Since his last surgery, the only photos released of Chavez came out almost a week ago. He was seen bed-ridden but smiling, looking through a newspaper with two of his daughters at his side.

At the Caracas military hospital where Chavez is said to be continuing his convalescence, soldiers are on guard outside to keep out journalists and curious onlookers.

Chavez had declared himself free of cancer after earlier rounds of surgery and went on to win another six-year term in October elections.

But he later suffered a relapse and after the latest surgery in Havana on December 11, he was too sick to return to Venezuela for his scheduled inauguration on January 10.

The inauguration has been postponed indefinitely, prompting the opposition to cry foul. Vice President Nicolas Maduro, Chavez's handpicked heir, has essentially been running the country in Chavez's absence.

-AFP/fl

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