Herbal Viagra actually contains the real thing

IF IT looks too good to be true, it probably is. Several "herbal remedies" for erectile dysfunction sold online actually contain the active ingredient from Viagra.

Michael Lamb at Arcadia University in Glenside, Pennsylvania, and colleagues purchased 10 popular "natural" uplifting remedies on the internet and tested them for the presence of sildenafil, the active ingredient in Viagra. They found the compound, or a similar synthetic drug, in seven of the 10 products – cause for concern because it can be dangerous for people with some medical conditions.

Lamb's work was presented last week at the American Academy of Forensic Sciences meeting in Washington DC.

This article appeared in print under the headline "Herbal Viagra gets a synthetic boost"

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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Bangladesh deploys troops as protest toll mounts

DHAKA: Bangladesh deployed troops in the north of the country on Sunday as six more people were killed in fresh clashes over the conviction of Islamist leaders for war crimes in the Muslim-majority nation.

The army was deployed in violence-wracked Shahjahanpur town after more than 5,000 stick-wielding protesters attacked two police stations, forcing police to open fire, they said.

"At least four people were killed in clashes after Jamaat-e-Islami supporters attacked us. The toll could rise," Shahjahanpur district's deputy police chief Moqbul Ahmed told AFP, adding that troops had been deployed to boost security.

Two other people were also killed on Saturday night, including a ruling party student activist who was allegedly hacked to death by suspected Jamaat supporters, police said.

An inter-city train was torched late Saturday in the northwest but there were no casualties, police said.

The death toll in the clashes over the war crimes verdicts has risen to 62 since January 21, including 46 killed in the past four days after Jamaat's vice president was sentenced to death, police said.

Delwar Hossain Sayedee was on Thursday found guilty of murder, religious persecution and rape during the 1971 independence war, triggering violent clashes between rampaging Jamaat supporters and police across the country.

The 73-year-old firebrand preacher was the third person to be convicted by the war crimes tribunal, whose verdicts have been met with outrage from Islamists.

Jamaat says the process is more about settling scores than delivering justice. The party has enforced a nationwide strike on Sunday to protest the verdict and killing of its activists in police "brutalities".

The war crimes trials of a dozen Jamaat and main opposition Bangladesh Nationalist Party (BNP) leaders have opened old wounds and divided the nation, with the opposition parties accusing the government of staging a witch-hunt.

The government, which says the war claimed three million lives, rejects the claims and accuses Jamaat leaders of being part of pro-Pakistani militias blamed for much of the carnage during the 1971 independence war.

Independent estimates put the death toll from the war in which Bangladesh won its independence from Pakistan at a much lower figure of 300,000 to 500,000.

- AFP/ir

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LG notches 10M worldwide sales of LTE-enabled smartphones

LG Electronics announced today it has sold more than 10 million LTE-capable smartphones worldwide as the company grapples with dwindling market share.

The milestone comes a little more than six months after the company announced it had surpassed 5 million sales of LTE-enabled phones.

"Aggressive pushing forward with 4G LTE technology allows LG satisfy the needs of consumers and is a huge factor in our growing success in global LTE smartphone sales," LG CEO Jong-seok Park said in statement. "Having established ourselves as a major industry player, we will continue to expand our footprint in the global LTE market with a wider range of differentiated, high quality LTE smartphones."

LG said it hopes to double its LTE smartphone presence in 2013 as LTE smartphone shipment growth is expected to triple. Strategy Analytics said in December that its research indicated global LTE smartphone shipments would hit 275 million this year.

The company attributed its explosive growth in the segment to its expansion last year into markets such as the United States, Japan, Germany, and South Korea. Recent rollouts of the LG Optimus G in more than 50 additional countries also contributed to the milestone.

As impressive as the sales figure is, LG continues to lose ground in the LTE market, according to research firm Strategy Analytics. In the third quarter of 2012, LG's market share fell to 9 percent from 15 percent in the previous quarter. Samsung remained the market leader even though its share fell from 51 percent to 40 percent. Apple brought in 26.7 percent for second place.

The announcement comes on the heels of LG's overhaul of its
Android product line at the Mobile World Congress last month in Barcelona, Spain. LG says it is targeting the spectrum of LTE customers, with its G series for deep-pocketed early adopters, the F series with the mission of "4G LTE for everyone," the lower-end L series, and the Vu
tablets.

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We Didn’t Domesticate Dogs. They Domesticated Us.

In the story of how the dog came in from the cold and onto our sofas, we tend to give ourselves a little too much credit. The most common assumption is that some hunter-gatherer with a soft spot for cuteness found some wolf puppies and adopted them. Over time, these tamed wolves would have shown their prowess at hunting, so humans kept them around the campfire until they evolved into dogs. (See "How to Build a Dog.")

But when we look back at our relationship with wolves throughout history, this doesn't really make sense. For one thing, the wolf was domesticated at a time when modern humans were not very tolerant of carnivorous competitors. In fact, after modern humans arrived in Europe around 43,000 years ago, they pretty much wiped out every large carnivore that existed, including saber-toothed cats and giant hyenas. The fossil record doesn't reveal whether these large carnivores starved to death because modern humans took most of the meat or whether humans picked them off on purpose. Either way, most of the Ice Age bestiary went extinct.

The hunting hypothesis, that humans used wolves to hunt, doesn't hold up either. Humans were already successful hunters without wolves, more successful than every other large carnivore. Wolves eat a lot of meat, as much as one deer per ten wolves every day-a lot for humans to feed or compete against. And anyone who has seen wolves in a feeding frenzy knows that wolves don't like to share.

Humans have a long history of eradicating wolves, rather than trying to adopt them. Over the last few centuries, almost every culture has hunted wolves to extinction. The first written record of the wolf's persecution was in the sixth century B.C. when Solon of Athens offered a bounty for every wolf killed. The last wolf was killed in England in the 16th century under the order of Henry VII. In Scotland, the forested landscape made wolves more difficult to kill. In response, the Scots burned the forests. North American wolves were not much better off. By 1930, there was not a wolf left in the 48 contiguous states of America.  (See "Wolf Wars.")

If this is a snapshot of our behavior toward wolves over the centuries, it presents one of the most perplexing problems: How was this misunderstood creature tolerated by humans long enough to evolve into the domestic dog?

The short version is that we often think of evolution as being the survival of the fittest, where the strong and the dominant survive and the soft and weak perish. But essentially, far from the survival of the leanest and meanest, the success of dogs comes down to survival of the friendliest.

Most likely, it was wolves that approached us, not the other way around, probably while they were scavenging around garbage dumps on the edge of human settlements. The wolves that were bold but aggressive would have been killed by humans, and so only the ones that were bold and friendly would have been tolerated.

Friendliness caused strange things to happen in the wolves. They started to look different. Domestication gave them splotchy coats, floppy ears, wagging tails. In only several generations, these friendly wolves would have become very distinctive from their more aggressive relatives. But the changes did not just affect their looks. Changes also happened to their psychology. These protodogs evolved the ability to read human gestures.

As dog owners, we take for granted that we can point to a ball or toy and our dog will bound off to get it. But the ability of dogs to read human gestures is remarkable. Even our closest relatives-chimpanzees and bonobos-can't read our gestures as readily as dogs can. Dogs are remarkably similar to human infants in the way they pay attention to us. This ability accounts for the extraordinary communication we have with our dogs. Some dogs are so attuned to their owners that they can read a gesture as subtle as a change in eye direction.

With this new ability, these protodogs were worth knowing. People who had dogs during a hunt would likely have had an advantage over those who didn't. Even today, tribes in Nicaragua depend on dogs to detect prey. Moose hunters in alpine regions bring home 56 percent more prey when they are accompanied by dogs. In the Congo, hunters believe they would starve without their dogs.

Dogs would also have served as a warning system, barking at hostile strangers from neighboring tribes. They could have defended their humans from predators.

And finally, though this is not a pleasant thought, when times were tough, dogs could have served as an emergency food supply. Thousands of years before refrigeration and with no crops to store, hunter-gatherers had no food reserves until the domestication of dogs. In tough times, dogs that were the least efficient hunters might have been sacrificed to save the group or the best hunting dogs. Once humans realized the usefulness of keeping dogs as an emergency food supply, it was not a huge jump to realize plants could be used in a similar way.

So, far from a benign human adopting a wolf puppy, it is more likely that a population of wolves adopted us. As the advantages of dog ownership became clear, we were as strongly affected by our relationship with them as they have been by their relationship with us. Dogs may even have been the catalyst for our civilization.

Dr. Brian Hare is the director of the Duke Canine Cognition Center and Vanessa Woods is a research scientist at Duke University. This essay is adapted from their new book, The Genius of Dogs, published by Dutton. To play science-based games to find the genius in your dog, visit www.dognition.com.

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Man's Body Recovery Effort Ends; Sinkhole 'Unstable'

Authorities have discontinued the rescue effort for a Florida man who was swallowed by a sinkhole when his home's foundation collapsed and said it is unlikely his body will ever be recovered.

"We feel we have done everything we can," Hillsborough County administrator Mike Merrell said at a news conference this afternoon. "At this point, it's not possible to recover the body."

Merell said officials would bring in heavy equipment to begin demolishing the home on Sunday.

"We're dealing with a very unusual sinkhole," he said. "It's very deep. It's very wide. It's very unstable."

Jeff Bush was in his bedroom when a sinkhole opened up and trapped him underneath his home at 11 p.m. Thursday.

Two homes next door to Bush's residence were evacuated today after authorities said they had been compromised by the growing sinkhole.

With the assistance of rescuers, the homeowners will be allowed to enter their home for only 30 minutes to gather valuables, authorities said.

Rescuers returned to the site in Seffner, Fla., early this morning to conduct further testing, but decided it was too dangerous for the family initially affected by the sinkhole to enter their home, which was declared condemned.

Florida Sinkhole Opens Up Beneath Man's Home Watch Video

Florida Man Believed Dead After Falling into Sinkhole Watch Video

Florida Sinkhole Swallows House, Man Trapped Inside Watch Video

While the sinkhole was initially estimated to be 15 feet deep on Thursday night, the chasm has continued to grow. Officials now estimate it measures 30 feet across and is up to 100 feet deep.

The Hillsborough County Fire Rescue has set up a relief fund for all families affected by the growing sink hole.

MORE: How Sinkholes Can Develop

Rescue operations were halted Friday night after it became too dangerous to approach the home.

Bill Bracken, an engineer with Hillsborough County Urban Search and Rescue team said the house "should have collapsed by now, so it's amazing that it hasn't."

RELATED: Florida Man Swallowed by Sinkhole: Conditions Too Unstable to Approach

Using ground penetrating radar, rescuers have found a large amount of water beneath the house, making conditions even more dangerous for them to continue the search for Bush.

Hillsborough County lies in what is known as Florida's "Sinkhole Alley." More than 500 sinkholes have been reported in the area since 1954, according to the state's environmental agency.

Meanwhile, Bush's brother, Jeremy Bush, is still reeling from Thursday night.

Jeremy Bush had to be rescued by a first responder after jumping into the hole in an attempt to rescue his brother when the home's concrete floor collapsed, but said he couldn't find him.

"I just started digging and started digging and started digging, and the cops showed up and pulled me out of the hole and told me the floor's still falling in," he said.

"These are everyday working people, they're good people," said Deputy Douglas Duvall of the Hillsborough County sheriff's office. "And this was so unexpected, and they're still, you know, probably facing the reality that this is happening."

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Herbal Viagra actually contains the real thing

IF IT looks too good to be true, it probably is. Several "herbal remedies" for erectile dysfunction sold online actually contain the active ingredient from Viagra.

Michael Lamb at Arcadia University in Glenside, Pennsylvania, and colleagues purchased 10 popular "natural" uplifting remedies on the internet and tested them for the presence of sildenafil, the active ingredient in Viagra. They found the compound, or a similar synthetic drug, in seven of the 10 products – cause for concern because it can be dangerous for people with some medical conditions.

Lamb's work was presented last week at the American Academy of Forensic Sciences meeting in Washington DC.

This article appeared in print under the headline "Herbal Viagra gets a synthetic boost"

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.

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Thai tourist industry 'driving' elephant smuggling

BANGKOK: Smuggling the world's largest land animal across an international border sounds like a mammoth undertaking, but activists say that does not stop traffickers supplying Asian elephants to Thai tourist attractions.

Unlike their heavily-poached African cousins -- whose plight is set to dominate Convention on International Trade in Endangered Species (CITES) talks in Bangkok next week -- Asian elephants do not often make the headlines.

But the species is also under threat, as networks operate a rapacious trade in wild elephants to meet the demands of Thailand's tourist industry.

Camps and zoos featuring elephants tightrope walking, playing football or performing in painting contests employ almost 4,000 domesticated elephants for the amusement of tourists.

Conservation activists accuse the industry of using illicitly-acquired animals to supplement its legal supply, with wild elephants caught in Myanmar and sold across the border into one of around 150 camps.

"Even the so-called rescue charities are trying to buy elephants," said John Roberts of the Golden Triangle Asian Elephant Foundation.

Domestic elephants in Thailand -- where the pachyderm is a national symbol -- have been employed en masse in the tourist trade since they found themselves unemployed in 1989 when logging was banned.

Just 2,000 of the animals remain in the wild.

Prices have exploded with elephants now commanding between 500,000 and two million baht ($17,000 to $67,000) per baby, estimates suggest.

The number of baby elephants "coming into the system" is far higher than would be possible "from actual breeding", said Roberts, whose group decided to stop buying elephants seven years ago and now has 26 residents.

"I cannot see a way to buy an elephant which doesn't cause another elephant to be smuggled," he added.

Between 50 and 100 wild baby or young female elephants are sold from Myanmar each year, according to estimates by British charity Elephant Family.

The group's head of conservation, Dan Bucknell, told AFP that while some trafficked elephants may be taken elsewhere, the majority enter the Thai market.

"Thailand is certainly a hub," he said.

Smuggling such a large mammal should in theory require elaborate planning to avoid the police but in reality traffickers just "do it over a normal road", said wildlife trade researcher Vincent Nijman of Oxford Brookes university.

"Elephants can be in a truck or even walk" across the Thai border in front of complicit customs officers and border guards, he said.

Demand is not only threatening the 4,000 to 5,000 wild elephants in Myanmar, but is also hitting populations in Thailand's other neighbour Laos.

Young domestic elephants are exported across the border, furthering the decline of a population of around 480 animals, said Gilles Maurer of the group ElephantAsia.

Laos, known as the "land of a million elephants", only has between 300 and 500 wild pachyderms left and Maurer said that as the domestic population shrinks, "there is a strong risk" that poachers will turn to them.

Last year Thai authorities conducted several raids on elephant camps and seized some 25 animals -- 19 remain under their protection.

"It is likely the 19 seized elephants were smuggled wild animals as their paperwork did not match up," said forest ranger Pradung Jitraon, of Thailand's National Parks department, who participated in the operation.

Activists have welcomed the initiative but are also calling for broader reforms. "The system now is so weak," said Petch Manopawitr of the World Wildlife Fund in Thailand.

Thailand needs "more control, more transparent monitoring of the population, of what they do in terms of new born elephants", he said, calling for a proper database of elephants, using DNA testing or microchips.

Such a system, he added, would allow foreigners to visit elephant camps safe in the knowledge they are not "harming or threatening the wild population".

- AFP/ck

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Crave Ep. 111: Man vs. jetpack

Man vs. jetpack, Ep: 111

Subscribe to Crave:

iTunes (HD) | iTunes (SD) | iTunes (HQ)

RSS (HD) | RSS (SD) | RSS (HQ)

A German inventor has built a DIY jetpack, so we hop onboard. Also, we get a first look at "Star Wars" pinball for iOS and
Android, and "Star Trek" fans win a major space battle when they vote to name a Pluto moon "Vulcan." All that and more on this week's episode of Crave.

Crave stories:

- Google Nexus fired into space to see if screams are audible

- Myo gesture-control armband uses muscle power

- Star Wars Pinball coming tomorrow to Android, iOS (video)

- Get a ball's-eye view with camera in football

- Trekkies conquer contest to name Pluto moons

- Inventor gets off the ground with homemade jetpack

- First-person Mario video will blow your mind

- Crave giveaway: Two leather iPad cases from Kavaj

Social networking:

- Stephen on Twitter

- Stephen on Google+

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Black Hole Spins at Nearly the Speed of Light

A superfast black hole nearly 60 million light-years away appears to be pushing the ultimate speed limit of the universe, a new study says.

For the first time, astronomers have managed to measure the rate of spin of a supermassive black hole—and it's been clocked at 84 percent of the speed of light, or the maximum allowed by the law of physics.

"The most exciting part of this finding is the ability to test the theory of general relativity in such an extreme regime, where the gravitational field is huge, and the properties of space-time around it are completely different from the standard Newtonian case," said lead author Guido Risaliti, of the Harvard-Smithsonian Center for Astrophysics (CfA) and INAF-Arcetri Observatory in Italy. (Related: "Speedy Star Found Near Black Hole May Test Einstein Theory.")

Notorious for ripping apart and swallowing stars, supermassive black holes live at the center of most galaxies, including our own Milky Way. (See black hole pictures.)

They can pack the gravitational punch of many million or even billions of suns—distorting space-time in the region around them, not even letting light to escape their clutches.

Galactic Monster

The predatory monster that lurks at the core of the relatively nearby spiral galaxy NGC 1365 is estimated to weigh in at about two million times the mass of the sun, and stretches some 2 million miles (3.2 million kilometers) across-more than eight times the distance between Earth and the moon, Risaliti said. (Also see "Black Hole Blast Biggest Ever Recorded.")

Risaliti and colleagues' unprecedented discovery was made possible thanks to the combined observations from NASA's high-energy x-ray detectors on its Nuclear Spectroscopic Telescope Array (NuSTAR) probe and the European Space Agency's low-energy, x-ray-detecting XMM-Newton space observatory.

Astronomers detected x-ray particle remnants of stars circling in a pancake-shaped accretion disk surrounding the black hole, and used this data to help determine its rate of spin.

By getting a fix on this spin speed, astronomers now hope to better understand what happens inside giant black holes as they gravitationally warp space-time around themselves.

Even more intriguing to the research team is that this discovery will shed clues to black hole's past, and the evolution of its surrounding galaxy.

Tracking the Universe's Evolution

Supermassive black holes have a large impact in the evolution of their host galaxy, where a self-regulating process occurs between the two structures.

"When more stars are formed, they throw gas into the black hole, increasing its mass, but the radiation produced by this accretion warms up the gas in the galaxy, preventing more star formation," said Risaliti.

"So the two events—black hole accretion and formation of new stars—interact with each other."

Knowing how fast black holes spin may also help shed light how the entire universe evolved. (Learn more about the origin of the universe.)

"With a knowledge of the average spin of galaxies at different ages of the universe," Risaliti said, "we could track their evolution much more precisely than we can do today."

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Obama Signs Order to Begin Sequester Cuts

President Obama and congressional leaders today failed to reach a breakthrough to avert a sweeping package of automatic spending cuts, setting into motion $85 billion of across-the-board belt-tightening that neither had wanted to see.

President Obama officially initiated the cuts with an order to agencies Friday evening.

He had met for just over an hour at the White House Friday morning with Republican leaders House Speaker John Boehner and Senate Minority Leader Mitch McConnell and his Democratic allies, House Minority Leader Nancy Pelosi, Senate Majority Leader Harry Reid and Vice President Joe Biden.

But the parties emerged from their first face-to-face meeting of the year resigned to see the cuts take hold at midnight.

"This is not a win for anybody," Obama lamented in a statement to reporters after the meeting. "This is a loss for the American people."

READ MORE: 6 Questions (and Answers) About the Sequester

Officials have said the spending reductions immediately take effect Saturday but that the pain from reduced government services and furloughs of tens of thousands of federal employees would be felt gradually in the weeks ahead.

Sequestration Deadline: Obama Meets With Leaders Watch Video

Sequester Countdown: The Reality of Budget Cuts Watch Video

Federal agencies, including Homeland Security, the Pentagon, Internal Revenue Service and the Department of Education, have all prepared to notify employees that they will have to take one unpaid day off per week through the end of the year.

The staffing trims could slow many government services, including airport screenings, air traffic control, and law enforcement investigations and prosecutions. Spending on education programs and health services for low-income families will also get clipped.

"It is absolutely true that this is not going to precipitate the crisis" that would have been caused by the so-called fiscal cliff, Obama said. "But people are going to be hurt. The economy will not grow as quickly as it would have. Unemployment will not go down as quickly as it would have. And there are lives behind that. And it's real."

The sticking point in the debate over the automatic cuts -- known as sequester -- has remained the same between the parties for more than a year since the cuts were first proposed: whether to include more new tax revenue in a broad deficit reduction plan.

The White House insists there must be higher tax revenue, through elimination of tax loopholes and deductions that benefit wealthier Americans and corporations. Republicans seek an approach of spending cuts only, with an emphasis on entitlement programs. It's a deep divide that both sides have proven unable to bridge.

"This discussion about revenue, in my view, is over," Boehner told reporters after the meeting. "It's about taking on the spending problem here in Washington."

Boehner: No New Taxes to Avert Sequester

Boehner says any elimination of tax loopholes or deductions should be part of a broader tax code overhaul aimed at lowering rates overall, not to offset spending cuts in the sequester.

Obama countered today that he's willing to "take on the problem where it exists, on entitlements, and do some things that my own party doesn't like."

But he says Republicans must be willing to eliminate some tax loopholes as part of a deal.

"They refuse to budge on closing a single wasteful loophole to help reduce the deficit," Obama said. "We can and must replace these cuts with a more balanced approach that asks something from everybody."

Can anything more be done by either side to reach a middle ground?

The president today claimed he's done all he can. "I am not a dictator, I'm the president," Obama said.

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Mystery ring of radiation briefly encircled Earth

What were you doing last September? The charged particles that dance around Earth were busy. Unbeknown to most earthlings, a previously unseen ring of radiation encircled our planet for nearly the whole month – before being destroyed by a powerful interplanetary shock wave.

We already knew that two, persistent belts of charged particles, called the Van Allen radiation belts, encircle Earth. The discovery of a third, middle ring by NASA's twin Van Allen probes, launched in August 2012, suggests that these belts, which have puzzled scientists for over 50 years, are even stranger than we thought. Working out what caused the third ring to develop could help protect spacecraft from damaging doses of radiation.

Charged particles get trapped by Earth's magnetic field into two distinct regions, forming the belts. The inner belt, which extends from an altitude of 1600 to 12,900 kilometres, is fairly stable. But the outer belt, spanning altitudes ranging from 19,000 to 40,000 kilometres, can vary wildly. Over the course of minutes or hours, its electrons can be accelerated to close to the speed of light, and it can grow to 100 times its usual size.

Mystery acceleration

No one is sure what causes these "acceleration events", although it seems to have something to do with solar activity interacting with the Earths' magnetic field.

"That's one of the key things the probes are in place to understand," says Dan Baker of the University of Colorado, Boulder. "How does this cosmic accelerator, operating just a few thousand miles above our head, accelerate electrons to such extraordinarily high energies?"

When the Van Allen probes started taking data on 1 September 2012, one of these mysterious events was already under way. "We came in the middle of the movie there," Baker says. But otherwise, he says, "What we expected was what we saw when we first turned on: two distinct belts, separated."

That changed a day later when, to the team's surprise, an extra ring developed between the inner and outer ones. "We watched it develop right before our eyes," Baker says. The new, middle ring was relatively narrow, and its electrons had energies between 4 and 7.5 megaelectronvolts - about the same as in the outer Van Allen belt during an acceleration event.

Although the outer ring displayed its characteristic inconstancy, the new middle ring barely budged for nearly four weeks. Then a shock wave, probably linked to a burst of solar activity, wiped it out in less than an hour on 1 October.

Spacecraft malfunctions

It's not clear where the middle ring came from, Baker says, although it was probably related to the acceleration event. The electrons could have been stripped from the outer Van Allen belt, funnelled back towards the Earth and got trapped in the middle on the way, or they could have been energised from closer to Earth and shot up to higher altitudes.

Figuring out what happened could be important to protecting spacecraft from radiation damage, says Yuri Shprits of the University of California in Los Angeles, who was not involved in the observations but is crafting a theoretical explanation that he hopes to publish soon. "It truly presents us with a very important question, and very important puzzles," he says.

There were no specific spacecraft malfunctions during September that can be directly linked to the new belt, says Shprits. However satellite operators will want to know if such belts are common and if they pose more of a risk.

With no other examples of a transient belt caught so far, it's too soon to answer all those questions, Baker says. "We only have one in captivity," he says. "We're still trying to figure out exactly how it works."

Journal reference: Science, DOI: 10.1126/science.1233518

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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Shark fin-hungry China drives "chaotic" fishing in Indonesia

BENOA, Indonesia: Dozens of weary Indonesian fishermen sail into a busy port on the resort island of Bali celebrating their lucrative and controversial haul that is destined to end up at Chinese banquets.

The fishermen show off about 100 shark fins, already sliced off the carcasses, that are ready to be sold to middle-men and then most likely onwards to mainland China or cities around the world with big Chinese populations.

"We don't only look for sharks -- we mainly catch tuna and marlin -- but finding sharks is a good bonus. Their fins are worth a lot and the meat is easy to sell locally," said 33-year-old Warsito, who goes by one name.

Fishermen around Bali sell shark fins fresh off the boat for between US$15 and US$50, helping to satiate an ancient but fast-growing Chinese appetite for soup in which it is the main ingredient.

Shark fin soup was once a delicacy for China's elite, but shark populations have been decimated around the world as the country's 1.3 billion people have grown wealthier and incorporated it into their festivities.

While the Chinese government has banned shark fin soup from state banquets, and some five-star restaurants in Hong Kong and Singapore have dropped it from their menus, a burgeoning middle class in China continues to stoke demand.

Humans kill about 100 million sharks each year, mostly for their fins, according to the UN Food and Agriculture Organisation (FAO), and conservationists are warning that dozens of species are under threat.

Ninety percent of the world's sharks have disappeared over the past 100 years, mostly because of overfishing in countries such as Indonesia, the FAO said.

Conservationists also point out that "finning" -- slicing the valuable fins from live sharks -- is simply inhumane, as the rest of the animal is typically dumped back into the ocean where it bleeds slowly to death.

How to save the shark will be a top concern at the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) that begins in Bangkok, Thailand, on Sunday.

World authorities will look at restricting trade of certain shark species.

Restrictions would apply to manta rays and five shark species -- the porbeagle, scalloped hammerhead, great hammerhead, smooth hammerhead and oceanic whitetip -- and must be approved by two-thirds of member states.

However, experts say laws to restrict trade will mean little unless there are total bans on fishing, with greater efforts needed to control unregulated fisheries.

Indonesia is particularly important because it is the world's biggest fisher and exporter of sharks, with thousands of small-time fishermen such as those in Bali able to operate with impunity.

Management of the Indonesian industry has been "total chaos", Conservation International Indonesia marine programme director Tiene Gunawan said, with no national restrictions on the trade.

In 2010, the Indonesian government designed a national plan of action to better manage the shark fishing industry, but it has so far issued no regulations.

Rampant shark fishing has already affected ecosystems in Indonesian waters, Gunawan said, including the world-famous diving spot Raja Amapat in the region of Papua.

However recent efforts by the provincial authorities there -- emanating from a recognition that there is greater economic benefit in maintaining shark populations -- could be a model for the future.

After authorities in Raja Ampat noticed a surge in boats carrying hundreds of shark fins but no carcasses, the local government banned shark fishing in 2010.

Last week the ban was made into law, creating the country's only shark and manta ray sanctuary. It is also the first in the Coral Triangle, a massive region in Southeast Asia known as the "Amazon of the ocean".

"What they realised, and our studies support this, is that the value of a dead shark is much lower than if we keep it alive for tourism," Gunawan said.

-AFP/fl

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Movie studios target mobile apps for copyright infringement

Google Play app store.

(Credit:
Screenshot by Dara Kerr/CNET)

After targeting Web sites for copyright infringement for years, Hollywood is now setting its sights on mobile apps, according to Reuters.

Time Warner, Walt Disney, Sony, Viacom, and Twentieth Century Fox have all recently sent app "take down" notices to Google. Citing copyright infringement, these studios are demanding that the Web giant remove apps that use the likeness of characters in their movies or TV shows.

One of the offending apps is "Hobbit 3D Wallpaper HD," which has images from the popular movie, according to Reuters. Other apps are from movies like "Clash of the Titans," "Spiderman," and "Green Lantern."

The app market is a lucrative one. According to Reuters, it's worth $20 billion as of this year. Also, many of these apps get away without paying licensing fees.

"Smartphone apps that provide a direct link to infringing content have become a growing problem that needs to be addressed," Motion Picture Association of America's senior vice president for Internet content protection Marc Miller told Reuters. "Not only do these apps offer access to creative content that has been illegally copied, but they also pose risks to consumers from malware and often fail to provide viewers with the quality product they could often get through a growing number of legitimate sources."

According to Reuters, Google is complying with the studios' requests and is removing many of these apps from its Google Play app store. An Apple spokesperson wouldn't comment on take down notices for Reuters but did say that it reviews all apps before offering them in its App Store.

Over the past few years, Google has continually made more concessions to copyright owners, who have long demanded that it take steps to prevent copyright infringement. And, in August, it took action that was among the most significant antipiracy measures the company has ever adopted by penalizing sites that generated many complaints from copyright owners.

It's unclear if the Web giant has taken additional measures to curb copyright infringement on apps in Google Play.

CNET contacted Google and Apple for comment. We'll update the story when we get more information.

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Scarred Duckbill Dinosaur Escaped T. Rex Attack

A scar on the face of a duckbill dinosaur received after a close encounter with a Tyrannosaurus rex is the first clear case of a healed dinosaur wound, scientists say.

The finding, detailed in the current issue of the journal Cretaceous Research, also reveals that the healing properties of dinosaur skin were likely very similar to that of modern reptiles.

The lucky dinosaur was an adult Edmontosaurus annectens, a species of duckbill dinosaur that lived in what is today the Hell Creek region of South Dakota about 65 to 67 million years ago. (Explore a prehistoric time line.)

A teardrop-shaped patch of fossilized skin about 5 by 5 inches (12 by 14 centimeters) that was discovered with the creature's bones and is thought to have come from above its right eye, includes an oval-shaped section that is incongruous with the surrounding skin. (Related: "'Dinosaur Mummy' Found; Have Intact Skin, Tissue.")

Bruce Rothschild, a professor of medicine at the University of Kansas and Northeast Ohio Medical University, said the first time he laid eyes on it, it was "quite clear" to him that he was looking at an old wound.

"That was unequivocal," said Rothschild, who is a co-author of the new study.

A Terrible Attacker

The skull of the scarred Edmontosaurus also showed signs of trauma, and from the size and shape of the marks on the bone, Rothschild and fellow co-author Robert DePalma, a paleontologist at the Palm Beach Museum of Natural History in Florida, speculate the creature was attacked by a T. rex.

It's likely, though still unproven, that both the skin wound and the skull injury were sustained during the same attack, the scientists say. The wound "was large enough to have been a claw or a tooth," Rothschild said.

Rothschild and DePalma also compared the dinosaur wound to healed wounds on modern reptiles, including iguanas, and found the scar patterns to be nearly identical.

It isn't surprising that the wounds would be similar, said paleontologist David Burnham of the University of Kansas Biodiversity Institute, since dinosaurs and lizards are distant cousins.

"That's kind of what we would expect," said Burnham, who was not involved in the study. "It's what makes evolution work—that we can depend on this."

Dog-Eat-Dog

Phil Bell, a paleontologist with the Pipestone Creek Dinosaur Initiative in Canada who also was not involved in the research, called the Edmontosaurus fossil "a really nicely preserved animal with a very obvious scar."

He's not convinced, however, that it was caused by a predator attack. The size of the scar is relatively small, Bell said, and would also be consistent with the skin being pierced in some other accident such as a fall.

"But certainly the marks that you see on the skull, those are [more consistent] with Tyrannosaur-bitten bones," he added.

Prior to the discovery, scientists knew of one other case of a dinosaur wound. But in that instance, it was an unhealed wound that scientists think was inflicted by scavengers after the creature was already dead.

It's very likely that this particular Edmontosaurus wasn't the only dinosaur to sport scars, whether from battle wounds or accidents, Bell added.

"I would imagine just about every dinosaur walking around had similar scars," he said. (Read about "Extreme Dinosaurs" in National Geographic magazine.)

"Tigers and lions have scarred noses, and great white sharks have got dings on their noses and nips taken out of their fins. It's a dog-eat-dog world out there, and [Edmontosaurus was] unfortunately in the line of fire from some pretty big and nasty predators ... This one was just lucky to get away."

Mysterious Escape

Just how Edmontosaurus survived a T. rex attack is still unclear. "Escape from a T. rex is something that we wouldn't think would happen," Burnham said.

Duckbill dinosaurs, also known as Hadrosaurs, were not without defenses. Edmontosaurus, for example, grew up to 30 feet (9 meters) in length, and could swipe its hefty tail or kick its legs to fell predators.

Furthermore, they were fast. "Hadrosaurs like Edmontosaurus had very powerful [running] muscles, which would have made them difficult to catch once they'd taken flight," Bell said.

Duckbills were also herd animals, so maybe this one escaped with help from neighbors. Or perhaps the T. rex that attacked it was young. "There's something surrounding this case that we don't know yet," Burnham said.

Figuring out the details of the story is part of what makes paleontology exciting, he added. "We construct past lives. We can go back into a day in the life of this animal and talk about an attack and [about] it getting away. That's pretty cool."

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Arias Recounts Each Moment of Stabbing, Slashing

Accused murderer Jodi Arias was forced to recount today each detail of how she killed her ex-boyfriend, Travis Alexander, including re-enacting how he allegedly tackled her when she shot him, leaving her crying in her hands on the witness stand.

During hours of dramatic cross-examination by prosecutor Juan Martinez, Arias bawled as he asked her about stabbing, slashing and shooting Alexander on June 4, 2008.

"You would acknowledge that Mr. Alexander was stabbed, and that the stabbing was with the knife, and it was after the shooting according to you, right?" Martinez said in rapid succession.

"Yes, I don't remember," Arias said, covering her face with her hands.

"Do you acknowledge the stab wounds, and we can count them together, were to the back of the head and the torso?" Martinez said, flashing a photo of Alexander's bloodied body onto the courtroom projector. " Do you want to take a look at the photo?"

Arias, burying her face in her hands and shutting her eyes on the stand, mumbled, "No."

Alexander's sisters, seated in the front row of the gallery, also looked away, crying.

Arias, 32, is accused of killing Alexander on June 4, 2008 out of jealousy. He was stabbed 27 times, his throat was slashed and he was shot in the head twice.

Arias claims she killed in self-defense after Alexander had become increasingly violent with her. She could face the death penalty if convicted.

Martinez also forced Arias to demonstrate in court today how she claims Alexander lunged at her "like a linebacker," causing her to fire the gun at him. The pair argued over how exactly Alexander was positioned, and Martinez pushed her to explain what she meant.

"He lunges at me like a linebacker," Arias said.

"Like a linebacker, what does that mean?" Martinez asked.

Jodi Arias Under Attack in Third Day of Cross-Examination Watch Video

Jodi Arias, Prosecutor Butt Heads in Cross-Examination Watch Video

Jodi Arias Maintains She 'Felt Like a Prostitute' Watch Video

"He was low. It was almost like he dove," she said, and trying to explain it further, added, "He was like a linebacker is the only way I can describe it unless I get up to act it out which I'd rather not do."

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

Timeline of the Jodi Arias Trial

"Go ahead and do it," Martinez said. "Just stand. Go ahead."

Judge Sherry Stephens initially cleared the court as Arias demonstrated and then Martinez had her do it again after the jury and spectators were allowed back into the courtroom.

Standing and moving away from the witness box, Arias bent at the waist and spread out her arms and meekly made a slight lunging motion.

According to her testimony, Arias fired the gun as Alexander rushed at her, tackling her to the ground. She said she does not remember how she stabbed or slashed him.

It was a day of dramatics and anger as the prosecution pressed Arias on the details of the killing, with Martinez ending the afternoon of questioning by accusing Arias of lying throughout her direct testimony.

At one point Arias dissolved into tears, unable to answer pointed questions when shown a photo of Alexander's body lying crumpled in the bottom of the stall shower.

After a short pause, Martinez asked dryly, "Were you crying when you were shooting him?"

"I don't remember," Arias moaned.

"Were you crying when you stabbed him?" he said. "How about when you slashed his throat?"

"I don't remember, I don't know."

Martinez pressed on, "You're the one that did this right? And lied about all this right?"

"Yes."

"So then take a look at it," he barked.

Arias did not answer Martinez's question, crying into her hands instead. The judge, after a moment, called for the lunch recess to take a break from the testimony. Arias' attorney walked over and consoled her, telling her to "take a moment."

Until that moment, Arias had given vague answers to Martinez as he asked about the hours leading up to the murder. Arias, 32, has testified that she drove to Alexander's house on June 4, 2008, for a sexual liaison, that she had sex with Alexander and the pair took nude photos before an explosive confrontation ended with her killing him. She claims she doesn't remember stabbing Alexander, but insists it was in self-defense.

Martinez questioned her claims, asking exactly what they argued about and who encouraged whom to take the nude photos. He pointed out that Arias told Detective Esteban Flores of the Mesa police department that she had to convince Alexander to take the nude photos in the shower, but that she testified on the stand that Alexander had wanted them.

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Quantum skyfall puts Einstein's gravity to the test

DIVIDING a falling cloud of frozen atoms sounds like an exotic weather experiment. In fact, it's the latest way to probe whether tiny objects obey Einstein's theory of general relativity, our leading explanation for gravity.

General relativity is based on the equivalence principle, which says that in free fall, all objects fall at the same rate, whatever their mass, provided the only force at work is gravity. That has been proven for large objects: legend has it that Galileo did it first by dropping various balls from the Tower of Pisa. Whether equivalence holds at quantum scales, where gravity's effects are not well understood, isn't clear. Figuring it out could help create a quantum theory of gravity, one of the biggest goals of modern physics.

Creating a quantum equivalent of Galileo's test isn't easy. In 2010 a team led by Ernst Rasel of the University of Hannover in Germany monitored a quantum object in free fall, by tossing a Bose-Einstein condensate (BEC) – a cloud of chilled atoms that behaves as a single quantum object and so is both particle and wave – down a 110-metre tall tower. Now they have split and recombined the wave – all before the BEC, made of rubidium atoms, reached the bottom. This produces an interference pattern that records the path of the falling atoms and can be used to calculate their acceleration (Physical Review Letters, doi.org/km6). The next step is to do the same experiment on a different kind of atom, with a different mass, to see if the equivalence principle holds.

The BEC can only be split for 100 milliseconds in the tower before hitting the bottom, so to allow tiny differences between the atom types to emerge, the work must be repeated in space, where the waves can be split for longer. By showing that a matter-wave can be split and recombined while falling, Rasel's result is a "major step" towards the space version, says Charles Wang of the University of Aberdeen, UK.

This article appeared in print under the headline "Quantum skyfall tests Einstein's gravity"

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Yvonne Lim: Making time for love

SINGAPORE: Her eyes glistened with tears when Singapore actress Yvonne Lim spoke about her character Liu Xixi in the upcoming drama "Marry Me", during a recent media event.

In the show, Liu, a successful gynecologist, winds up getting dumped by her boyfriend of 20 years, after she spent too much time on her career and neglected their relationship.

Lim revealed that she became emotional as her character's painful experiences in "Marry Me" reminded her of own.

"I have all these experiences before."

"I spend so much of my time on my work that I end up spending very little time dealing with matters of the heart," said Lim, explaining that she once broke up with a guy over the same issue.

"I remember I was very emotional when I read the script."

"I know how this character feels, why she struggles with her feelings, and why she is in pain, but keeps it bottled up inside."

Lim expressed that Liu is a character many women can identify with, because what happens to her in the show is something that also occurs in real life.

"She is so dedicated to her work that she forgot about her love life and kind of took it for granted.

"I've seen that happen to my girl friends. I have seen that happen to other people. I've heard stories like that before."

"When things drag on for too long, it (the relationship) gets stagnant. That's when things happen," said Lim earnestly.

Still, Lim said she prefers to take her time to slowly get to know someone instead of rushing things, and said she believes in "letting nature take its course".

"You have to find the right partner who is willing to be with you.

"If it happens, it happens. If not, that's the way it is," said Lim with a smile.

"I don't think about it much, though there is still this part of me that hopes for a fairytale ending."

"Marry Me", which also stars Koh Ya Hui and Jesseca Liu, airs every Wednesday, Thursday and Friday, 8pm on Channel U.

-CNA/ha

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Urine sample app lets users detect diseases with iPhones

The Uchek app lets users take urine samples with their smartphones.

(Credit:
Uchek)

Ever thought a smartphone could detect what was in your urine? Well, now it can. A new iPhone app developed by MIT entrepreneur Myshkin Ingawale, unveiled at the TED conference this week lets people take urine samples with their mobile device.

Obviously, pee and electronics don't mix, so this app instead uses the smartphone's camera to determine what's in urine. Dubbed Uchek, the app involves the user peeing into a cup, putting a color-coded urinalysis strip into the cup, taking of photo of the results, and then letting the app work its magic.

Uchek can detect up to 25 diseases, such as diabetes, urinary tract infections, and pre-clampsia. It can also measure the levels of glucose, proteins, ketones, and more. According to Wired, 1,200 sample tests showed that the app was more accurate than humans interpreting the color-coded strips.

Ingawale's goal is to help people become more aware of what health issues they might have or track their existing conditions. Ideally, it would be extra information to give to a doctor.

"The idea is to get people closer to their own information," Ingawale said at the TED conference, according to Wired. "I want people to better understand what is going on with their bodies."

Uchek is currently working its way through Apple's approval process and Ingawale is also working on an
Android app, according to Wired. The app will cost 99 cents and users can buy a packet of strips and a color-coded user guide for $20.

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Why African Rhinos Are Facing a Crisis

The body count for African rhinos killed for their horns is approaching crisis proportions, according to the latest figures released by the International Union for Conservation of Nature (IUCN).

To National Geographic reporter Peter Gwin, the dire numbers—a rhinoceros slain every 11 minutes since the beginning of 2013—don't come as a surprise. "The killing will continue as long as criminal gangs know they can expect high profits for selling horns to Asian buyers," said Gwin, who wrote about the violent and illegal trade in rhino horn in the March 2012 issue of the magazine.

The recent surge in poaching has been fueled by a thriving market in Vietnam and China for rhino horn, used as a traditional medicine believed to cure everything from hangovers to cancer. Since 2011, at least 1,700 rhinos, or 7 percent of the total population, have been killed and their horns hacked off, according to the IUCN. More than two-thirds of the casualties occurred in South Africa, home to 73 percent of the world's wild rhinos. In Africa there are currently 5,055 black rhinos, listed as critically endangered by the IUCN, and 20,405 white rhinos. (From our blog: "South African Rhino Poaching Hits New High.")

Trying to snuff out poaching by itself won't work, said Gwin. The South African government is fighting a losing battle on the ground to gangs using helicopters, dart guns, high-powered weapons—and lots of money. (National Geographic pictures: The bloody poaching battle over rhino horn [contains graphic images].)

"Every year they get tougher on poaching, but rhino killings continue to rise astronomically," said Gwin. "Somehow they have to address the demand side in a meaningful way. This means either shutting down the Asian markets for rhino horn, or controversially, finding a way to sustainably harvest rhino horns, control their legal sale, and meet what appears to be a huge demand. Either will be a formidable endeavor."

Hope and Hurdles

The signing in December of a memorandum of understanding between South Africa and Vietnam to deal with rhino poaching and other conservation issues raises hope for some concrete action. Observers say the next step is for the two governments to follow through with tangible crime-stopping efforts such as intelligence sharing and other collaboration. The highest hurdle to stopping criminal trade, though, is cultural, Gwin believes. "In Vietnam and China, a lot of people simply believe that as a traditional cure, rhino horn works." (Related: "Blood Ivory.")

The recent climb in rhino deaths threatens what had been a conservation success story. Since 1995, due to better law enforcement, monitoring, and other actions, the overall rhino numbers have steadily risen. The poaching epidemic, the IUCN warns, could dramatically slow and possibly reverse population gains.

The population growth is also being stymied by South Africa's private game farmers, who breed rhinos for sport hunting and tourism and for many years have helped rebuild rhino numbers. Many of them are getting out of the business due to the high costs of security and other risks associated with the poaching invasions.

Those who still have rhinos on their farms will often pay a veterinarian to cut the horns off—under government supervision—to dissuade poachers, but the process costs more than $2,000 and has to be repeated when the horns grow back every two years. Even then the farmers are stuck with horns that are illegal to sell—and which criminals seek to obtain.

Room for Debate

Rhino killings and the trade in their horns will be a major topic at a high-profile conference, the 16th meeting of the Conference of the Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which opens in Bangkok March 3. What won't surprise Gwin is if the issue of sustainably harvesting rhino horns from live animals comes up for discussion.

"It's an idea that seems to be gaining traction among some South African politicians and law enforcement circles," he said, noting that the international conservation community strongly opposes any talk of legalizing the trade of rhino horn, sustainably harvested or not. The bottom line for all parties in the discussion is clear, said Gwin: "The slaughter has to stop if rhinos are to survive."

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Arias Prosecutor Too Combative, Experts Say

He has barked, yelled, been sarcastic and demanded answers from accused murderer Jodi Arias this week.

And in doing so, prosecutor Juan Martinez and his aggressive antics may be turning off the jury he is hoping to convince that Arias killed her ex-boyfriend Travis Alexander in June 2008, experts told ABCNews.com today.

"Martinez is his own worst enemy," Mel McDonald, a prominent Phoenix defense attorney and former judge, told ABC News. "He takes it to the point where it's ad nauseam. You have difficulty recognizing when he's driving the point home because he's always angry and pushy and pacing around the courtroom. He loses the effectiveness, rather than build it up."

"He's like a rabid dog and believes you've got to go to everybody's throat," he said.

"If they convict her and give her death, they do it in spite of Juan, not because of him," McDonald added.

Martinez's needling style was on display again today as he pestered Arias to admit that she willingly participated in kinky sex with Alexander, though she previously testified that she only succumbed to his erotic fantasies to please him.

Arias, now 32, and Alexander, who was 27 at the time of his death, dated for a year and continued to sleep together for another year following their break-up.

Arias drove to his house in Mesa, Ariz., in June 2008, had sex with him, they took nude photos together and she killed him in his shower. She claims it was in self-defense. If convicted, Arias could face the death penalty.

Jodi Arias, Prosecutor Butt Heads in Cross-Examination Watch Video

Jodi Arias Maintains She 'Felt Like a Prostitute' Watch Video

Jodi Arias Admits to Killing Man, Lying to Police Watch Video

Martinez also attempted to point out inconsistencies in her story of the killing, bickering with her over details about her journey from Yreka, Calif., to Mesa, Ariz., including why she borrowed gas cans from an ex-boyfriend, when she allegedly took naps and got lost while driving, and why she spontaneously decided to visit Alexander at his home in Mesa for a sexual liaison.

"I want to know what you're talking about," Arias said to Martinez at one point.

"No, I'm asking you," he yelled.

Later, he bellowed, "Am I asking you if you're telling the truth?"

"I don't know," Arias said, firing back at him. "Are you?"

During three days of cross examining Arias this week, Martinez has spent hours going back and forth with the defendant over word choice, her memory, and her answers to his questions.

"Everyone who takes witness stand for defense is an enemy," McDonald said. "He prides himself on being able to work by rarely referring to his notes, but what he's giving up in that is that there's so much time he wastes on stupid comments. A lot of what I've heard is utterly objectionable."

Martinez's behavior has spurred frequent objections of "witness badgering" from Arias' attorney Kirk Nurmi, who at one point Tuesday stood up in court and appealed to the judge to have a conference with all of the attorneys before questioning continued. Judge Sherry Stephens at one point admonished Martinez and Arias for speaking over one another.

Andy Hill, a former spokesperson for the Phoenix police department, and Steven Pitt, a forensic psychiatrist who has testified as an expert witness at many trials in the Phoenix area, both said that despite his aggressive style, Martinez would likely succeed in obtaining a guilty verdict.

"When it comes to cross examination, one size does not fit all," said Pitt. "But if you set aside the incessant sparring, what the prosecutor I believe is effectively doing is pointing out the various inconsistencies in the defendant's version of events."

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Newly spotted comet to buzz Mars in 2014

Lisa Grossman, physical sciences reporter

A Martian sunset, as seen by NASA's Spirit rover in 2005.
(Image: Mars Exploration Rover Mission, Texas A&M, Cornell, JPL, NASA)

There's a new comet in town, and it is making a beeline for Mars. If projections of its orbit are correct, the icy visitor will buzz the Red Planet in October 2014.

Dubbed C/2013 A1, the comet was discovered on 3 January by prolific comet hunter Robert McNaught at Siding Spring Observatory in New South Wales, Australia. Colleagues at the Catalina Sky Survey in Arizona found images of the comet in their catalogue that date back to 8 December 2012, giving additional information about its movements.

These observations allowed astronomers to trace the comet's likely path around the sun. The calculated trajectory has C/2013 A1 crossing Mars' orbit on 19 October 2014, according to Australian blogger Ian Musgrave.

That doesn't necessarily mean a collision will occur. The best estimates right now have the comet passing a safe distance of 900,000 kilometres from the Martian surface. Asteroid 2012 DA14 got much closer to Earth last week, skimming by at a distance of 34,400 kilometres. But with so little data in hand, the calculations are not precise. It's possible the comet will miss Mars by as much as 36 million kilometres - or it could smack right into the planet. "An impact can't be ruled out at this stage," Musgrave wrote.

From Earth, we should be able to see the comet and Mars sitting side by side through small telescopes. And from Mars, the comet could be as spectacular as the expected "supercomet" ISON, which will come into view this year and could outshine the full moon.

Assuming the comet's orbit brings it close enough - but not too close - to Mars, the object should be visible either by rovers on the surface or the armada of Mars-orbiting satellites, which have a history of snapping spectacular shots of the Red Planet and its neighborhood.

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Safety concerns cloud S. Korea nuclear drive

GORI, South Korea: South Korea has big plans to become a major nuclear energy player, but they are unfolding at a time when the global industry is under intense scrutiny after the 2011 Fukushima disaster.

And its ambitions have not been helped by a series of domestic scandals and forced reactor shutdowns in 2012 that rattled public confidence and exposed a glaring lack of regulatory transparency.

Around US$400 billion is riding on South Korea's ability to sell its technology to potential clients as it aims to take on the United States, France and Russia and grab a 20 percent share of the nuclear energy market.

With around half of the world's 430 reactors due for retirement by 2030, according to the International Atomic Energy Agency, the next 15 years or so offer the prospect of a sales bonanza.

Spearheading South Korea's global drive is its ARP-1400 reactor. It won a $20 billion deal in 2009 to build four of them in the United Arab Emirates and it aims to export another 80, worth around US$400 billion, by 2030.

It is also planning a domestic energy expansion that would see it build 16 new reactors by 2030. South Korea currently operates 23 nuclear power reactors which meet more than 35 percent of the country's electricity needs.

"Our reactors are safe," Lee Young-Il insisted as he guided a group around an ARP-1400 nearing completion at the Gori nuclear power complex.

"We also have an excellent record of operating the reactors with a comparatively low annual rate of forced outage," said Lee, who heads the complex where South Korea's first commercial reactor came on line in 1978.

But the Fukushima disaster in Japan forced a number of countries to rethink their energy strategy, as public concern placed an even greater emphasis than before on reactor safety.

A survey commissioned by the Economics Ministry and published in November showed only 35 percent of South Koreans considered nuclear power to be safe, sharply down from 71 percent in January 2010.

"You are never free from worry as long as your country depends heavily on nuclear energy," Yangyi Won-Young, head of Nuclear-Free Korea, a coalition of civic groups, told AFP.

"Our nuclear power plants are vulnerable to natural disasters because of lax safety regulations which have been applied to construction, operation and parts," Yangyi said.

In the wake of the earthquake and tsunami-triggered meltdown at the Fukushima Daiichi nuclear plant in Japan, the state-run Korea Hydro and Nuclear Power Co (KHNP) launched a US$1.0 billion-dollar safety upgrade due to be completed by 2015.

The project involves building higher seawalls around the country's four nuclear power complexes, and equipping plants and reactors -- including the ARP-1400 -- with advanced watertight doors and ventilation systems, as well as new quake sensors.

But the upgrade coincided with a series of shutdowns and scandals in 2012 that triggered a warning from the International Energy Agency (IEA) in November about the need to rebuild public trust.

In May, five senior KHNP engineers were charged with trying to cover up a potentially dangerous power failure at the country's oldest Gori-1 reactor.

Later in the year, the government shut down two reactors at the Yeonggwang nuclear complex to replace components provided with fake quality certificates.

And a third reactor was taken offline at Yeonggwang when cracks were found on control rod tubes during maintenance work.

"Recent incidents at Korean nuclear facilities should serve as a timely reminder to the government that the nuclear regulatory authority must maintain an enhanced profile... and be able to take independent decisions," the IEA said in a report on South Korea's energy policies.

The South has been criticised in the past for a lack of transparency in the nuclear sector -- largely attributed to the regulatory bodies' mixed supervisory and promotional roles.

President Park Geun-Hye, who took office this week, looks set to further muddy the waters with her proposal for the nominally independent Nuclear Safety and Security Commission.

Park wants to affiliate the commission with a newly created super-ministry in charge of policies on science research, information communication technology and atomic energy development.

Scientists, environmentalists and a number of politicians -- including some from Park's ruling party -- say the move would undermine the watchdog's independence and weaken its safety management authority.

"The Republic of Korea is going to be the only country across the globe where regulators and basically developers or promoters might be working all together under the same roof," said Suh Kune-Yull, a nuclear engineering professor at Seoul National University.

"A conflict of interest is inevitable," Suh said.

- AFP/fl

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Yahoo admits new work policy contrary to industry view

Yahoo says work at the office, or work for someone else.

In response to the uproar caused by its recently announced telecommuting policy, Yahoo issued a brief statement this evening acknowledging that its work-at-home ban runs contrary to the tech industry as a whole.

"This isn't a broad industry view on working from home," Yahoo said in a statement published by The New York Times. "This is about what is right for Yahoo right now."

A spokesperson declined to elaborate, saying, "We don't discuss internal matters."

Yahoo's new policy, which requires employees to work in the company's offices, immediately ignited a firestorm of criticism. In a memo that leaked out over the weekend, Human Resources chief Jackie Reses informed the company's workforce that as of June, any existing work-from-home arrangements would no longer be honored.

"To become the absolute best place to work, communication and collaboration will be important, so we need to be working side-by-side," reads the memo.

The new policy was immediately criticized as standoffish in an industry where competition is intense for talented employees and especially ill advised at a company that has over the years battled declining morale among the rank and file. Some pointed out that CEO Marissa Mayer, a new mother who reportedly took only two weeks of maternity leave, should have more empathy for the needs of employees juggling time-conflicting commitments.

However, while working at home has become common at many tech companies, especially at ones eager to show off the benefits of collaborative Web-based software tools, some say the creative process suffers by not being able to share ideas in person.

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A History of Balloon Crashes

A hot-air balloon exploded in Egypt yesterday as it carried 19 people over ancient ruins near Luxor. The cause is believed to be a torn gas hose. In Egypt as in many other countries, balloon rides are a popular way to sightsee. (Read about unmanned flight in National Geographic magazine.)

The sport of hot-air ballooning dates to 1783, when a French balloon took to the skies with a sheep, a rooster, and a duck. Apparently, they landed safely. But throughout the history of the sport, there have been tragedies like the one in Egypt. (See pictures of personal-flight technology.)

1785: Pioneering balloonist Jean-Francois Pilatre de Rozier and pilot Pierre Romain died when their balloon caught fire, possibly from a stray spark, and crashed during an attempt to cross the English Channel. They were the first to die in a balloon crash.

1923: Five balloonists participating in the Gordon Bennett Cup, a multi-day race that dates to 1906, were killed when lightning struck their balloons.

1924: Meteorologist C. LeRoy Meisinger and U.S. Army balloonist James T. Neely died after a lightning strike. They had set off from Scott Field in Illinois during a storm to study air pressure. Popular Mechanics dubbed them "martyrs of science."

1995: Tragedy strikes the Gordon Bennett Cup again. Belarusian forces shot down one of three balloons that drifted into their airspace from Poland. The two Americans on board died. The other balloonists were detained and fined for entering Belarus without a visa. (Read about modern explorers who take to the skies.)

1989: Two hot air balloons collided during a sightseeing trip near Alice Springs, Australia. One balloon crashed to the ground killing all 13 people on board. The pilot of the other balloon was sentenced to a two-year prison term for "committing a dangerous act." Until today, this was considered the most deadly balloon accident.

2012: A balloon hit a power line and caught fire in New Zealand, killing all 11 on board. Investigators later determined that the pilot was not licensed to fly and had not taken  proper safety measures during the crash, like triggering the balloon's parachute and deflation system.

2012: A sightseeing balloon carrying 32 people crashed and caught fire during a thunderstorm in the Ljubljana Marshes in Slovenia. Six died; many other passengers were injured.

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Inside Organized Retail Crime Raids

We used to call it shoplifting, but these days the foot soldiers of retail crime rings are known as boosters. Police even have an acronym for these operations: ORC, which stands for Organized Retail Crime.

"It's just like a Fortune 500 company," said Sergeant Eric Lee of the Gardena Police Department in Gardena, Calif. "All of this is just organized."

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

Police say big retail stores, from Walgreens to J.C. Penny, are getting hit by highly sophisticated shoplifting networks that steal and resell everything from underwear to razors to milk. According to the National Retail Federation, theft can amount to annual losses as high as a $37 billion for retail businesses.

"Every store in every city has to go through this," Lee said. "They wait until no one's paying attention and they walk out."

Tide detergent is currently a hot target because it is compact, expensive and easy to sell on the streets for profit, police said. The Street name: "liquid gold."

"Sometimes we get rings that just do alcohol," Lee said. "And then we get some that do just meat and seafood."

Investigators say boosters move the loot for cents on the dollar to fencing operations -- the black market resellers of the stolen goods -- which sell the stolen merchandise in plain sight in stores. Boosters, fencers, Mr. Bigs, all of those involved in these shoplifting operations can potentially make millions a year from boosting and re-selling stolen goods.

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And Mike Swett is on the case. A former Riverside County sheriff's deputy in Los Angeles, Swett was badly injured in a car wreck and now works as a full-time private investigator on the ORC beat who has worked with Target, Marshalls, T.J. Maxx. Stores hire him to do his own undercover police work, catching thieves before involving local law enforcement.

"Kind of like working a narcotics case, it's like you've got low-level, mid-level and then top dog," Swett said. "We like to go after the top dog and the only way to get to the top dog is mid-level first."

At his command center -- his apartment -- Swett showed off the boxes upon boxes of tapes and photographs he has collected, the fruits of countless silent stake-out hours.

Swett said he has been casing two joints in L.A. for months, both alleged to be mid-level fencing operations. "Nightline" was invited to ride along with him when he sent undercover agents in for a final reconnaissance mission.

At some stores and shopping malls, clerks do little to stop shoplifters and often let them run, which has contributed to the growing fencing operations.

"[The stores] don't want their employees to get injured," Swett said. "So oftentimes they will call the police, but by the time we get there they are already in their car and they are gone."

This leaves professional investigators like Swett to put the pieces together and bust open the gangs to lead over-stretched police departments to the prey.

When raid day arrived, a motorcade of squad cars departed from the Gardena, Calif., police department and pulled up to one fencing operation. Swett said the merchandise being sold was boosted goods.

"There is Victoria's Secret, expensive Victoria's Secret, the gift sets," he said, pointing down a line of tables. "J.C. Penny, Miramax, its real stuff not counterfeit."

He spotted a bottle of Katy Perry brand perfume, which usually retails for around $90 but one seller had it priced at $59.

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Today on New Scientist: 25 February 2013

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