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"
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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.
SEFFNER, Fla. The effort to find the body of a Florida man who was swallowed by a sinkhole under his Florida home was called off Saturday and crews planned to begin demolishing the four-bedroom house.
The 20-foot-wide opening of the sinkhole is almost completely covered by the house and rescuers feared it would collapse on them if they tried to search for Jeff Bush, 37. Crews were testing the unstable ground surrounding the home and evacuated two neighboring homes as a precaution.
Hillsborough County Administrator Mike Merrill said heavy equipment would be brought in to begin the demolition Sunday morning.
"At this point it's really not possible to recover the body," Merrill said, later adding "we're dealing with a very unusual sinkhole."
Reporter Ashley Porter of CBS affiliate WTSP-TV in Tampa, Fla., reported that crews dropped a camera and listening devices into the hole, but there were no signs of life.
Jessica Damico, spokeswoman for Hillsborough County Fire Rescue, said the demolition equipment would be placed on what they believe is solid ground and reach onto the property to pull apart the house. The crew will try pulling part of the house away from the sinkhole intact so some heirlooms and mementoes can be retrieved.
Bush was in his bedroom Thursday night in Seffner — a suburb of 8,000 people 15 miles east of downtown Tampa — when the earth opened and took him and everything else in his room. Five others in the house escape unharmed.
Play Video
Man feared dead in sinkhole freak accident
On "CBS This Morning: Saturday," WTSP-TV reporter Grayson Kamm reported that Bush was not planning to stay in the house for long, just a few months, and had been planning to move out Saturday.
On Saturday, the normally quiet neighborhood of concrete block homes painted in Florida pastels was jammed with cars as engineers, reporters, and curious onlookers came to the scene.
At the home next door to the Bushes, a family cried and organized boxes. Testing determined that their house and another was compromised by the sinkhole. The families were allowed to go inside for about a half-hour to gather belongings.
Sisters Soliris and Elbairis Gonzalez, who live on the same street as the Bushes, said neighbors were worried for their safety.
"I've had nightmares," Soliris Gonzalez, 31, said. "In my dreams, I keep checking for cracks in the house."
They said the family has discussed where to go if forced to evacuate, and they've taken their important documents to a storage unit.
"The rest of it, this is material stuff, as long as our family is fine," Soliris Gonzalez said.
"You never know underneath the ground what's happening," added Elbairis Gonzalez, 30.
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Sinkholes
Experts say thousands of sinkholes form yearly in Florida because of the state's unique geography, though most are small and deaths rarely occur.
"There's hardly a place in Florida that's immune to sinkholes," said Sandy Nettles, who owns a geology consulting company in the Tampa area. "There's no way of ever predicting where a sinkhole is going to occur."
Most sinkholes are small, like one found Saturday morning in Largo, 35 miles away from Seffner. The Largo sinkhole, about 10 feet long and several feet wide, is in a mall parking lot.
The state sits on limestone, a porous rock that easily dissolves in water, with a layer of clay on top. The clay is thicker in some locations — including the area where Bush became a victim — making them even more prone to sinkholes.
Jonathan Arthur, the state geologist and director of the Florida Geological Survey, said other states sit atop limestone in a similar way, but Florida has additional factors like extreme weather, development, aquifer pumping and construction. "The conditions under which a sinkhole will form can be very rapid, or they can form slowly over time," he said.
But it remained unclear Saturday what, if anything, caused the Seffner sinkhole.
"The condition that caused that sinkhole could have started a million years ago," Nettles said.
Jeremy Bush, who tried to rescue his brother, lay flowers and a stuffed lamb near the house Saturday morning and wept.
He said someone came to his home a couple of months ago to check for sinkholes and other issues, apparently for insurance purposes, but found nothing wrong. State law requires home insurers to provide coverage against sinkholes.
"And a couple of months later, my brother dies. In a sinkhole," Bush said Friday.
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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