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.

Read More..

China village defies officials to demand democracy

SHANGPU, China: Villagers in southern China were locked in a stand-off with authorities on Sunday and were demanding democratic polls after a violent clash with thugs linked to a local official over a land transfer.

Just over a week ago, residents of Shangpu in Guangdong province fought with scores of attackers whom they claimed were sent by the village communist party chief and a business tycoon after they protested against a land deal.

Police are blockading the settlement to outsiders while residents refuse to let officials inside, days before the annual meeting of the country's legislature, the National People's Congress (NPC).

The situation recalls a similar episode in Wukan, also in Guangdong and around 100 kilometres (62 miles) from Shangpu, which made headlines worldwide 15 months ago.

At the main entrance of the village of 3,000 people, 40 police and officials stood guard, barring outside vehicles from entering. Not far away, a cloth banner read: "Strongly request legal, democratic elections."

Shangpu's two-storey houses and low-slung family-run workshops are surrounded by fields awaiting spring planting. But the main street is lined with the wrecks of cars damaged in the clash, with glass and metal littering the ground.

Residents said they should have the right to vote both for the leader who represents them and on whether to approve a controversial proposal to transform rice fields into an industrial zone.

"This should be decided by a vote by villagers," said one of the protest leaders, adding: "The village chief should represent our interests, but he doesn't."

Locals fear that once the NPC -- which starts on Tuesday -- ends, authorities will move in with force.

Chinese leaders have repeatedly ruled out Western-style democracy for the country.

"For the purpose of maintaining stability, they (authorities) don't want to use forceful measures before the meetings," another villager said. "We are afraid of them coming back."

The unidentified attackers, some of whom wore orange hard hats and red armbands, drove into the village and turned on residents with shovels and other weapons.

Villagers drove the interlopers off by hitting them with bamboo poles and throwing bricks from a nearby construction site, according to first-hand accounts and video of the incident provided to AFP.

They said they then vented their fury on the attackers' cars, overturning and smashing as many as 29 vehicles.

Residents claimed some of the group had knives and a gun. A video showed a man firing a handgun into the air and villagers said he was a plainclothes police officer trying to intercede. At least eight villagers were injured.

In Wukan in late 2011, a protest by residents against a land grab by local officials accused of corruption escalated after one of their leaders died in police custody.

Villagers barricaded roads and faced off against security forces for 10 days, until authorities backed down and promised them rare concessions. Residents were later allowed to hold open village elections -- a first in Wukan.

The people of Shangpu had heard of Wukan indirectly, and had similar demands: free elections for their leader.

They claim the current village chief Li Baoyu, who is also the party head, was foisted on them by higher authorities.

Residents allege Li fraudulently obtained signatures to support the transfer of 33 hectares (82 acres) of farmland to the Wanfeng Investment Co, backed by businessman Wu Guicun, to be used for factories producing electrical cables.

The village's ruling committee will receive compensation based on the yield of rice that would have been planted on the land. But residents fear they themselves will not be paid and say the compensation does not reflect the true value.

"Village cadres have illegally dealt in land and leased land at a low price," they said in a petition to higher officials.

In the government's only official statement on the case, Jiexi county, which administers the village, pledged to pursue those responsible for the attack and bring criminal prosecutions.

No one from Wanfeng Investment Co could be reached for comment.

- AFP/xq

Read More..

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.

Read More..

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.

Read More..

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."

Read More..