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"


















































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Chavez working amid chemotherapy: VP






CARACAS: Venezuelan President Hugo Chavez is still in charge and mulling political, social and economic policies even as he receives a new round of chemotherapy, his vice president said Saturday.

Vice President Nicolas Maduro said that the socialist leader, who is convalescing in seclusion at a Caracas military hospital, sent "guidance" to his Cabinet as recently as Friday.

"He is staying informed and in charge as chief who was ratified by our people various times," Maduro said during an event broadcast on state-run television. "Comandante Chavez is the supreme leader of the Bolivarian revolution."

The opposition says the government is lying about Chavez's condition and has voiced doubts that the 58-year-old president held a five-hour meeting with his Cabinet on February 22 as the government claims.

But Maduro repeated that the meeting took place and that the president sent more instructions the next day with Science Minister Jorge Arreaza, his son-in-law, before giving more guidance on Friday.

The leftist leader's chosen successor showed a dossier containing "political, social and economic actions" that Chavez has requested "to continue strengthening the economy to face the economic war of the parasitic bourgeoisie."

The "central document" will be sent to Chavez, he said, adding that the government was "respecting his treatment, we are not acting in an invasive way in his treatment."

Chavez, who was first diagnosed with cancer in June 2011, underwent a fourth round of surgery in Cuba in December.

Maduro disclosed for the first time late Friday that Chavez began a new cycle of chemotherapy in January and decided to return to Caracas last month to continue a "more intense" phase of treatment.

- AFP/ir



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The world is better off with Best Buy alive than dead



A Lenovo Yoga convertible ultrabook on display at a Los Angeles Best Buy. It's still the best place to comparison shop for gadgets in a physical store.

A Lenovo Yoga convertible ultrabook on display at a Los Angeles Best Buy. It's still the best place to comparison shop for gadgets in a physical store.



(Credit:
Brooke Crothers)


Despite all the flak Best Buy gets from consumers and financial analysts, the world is probably a better place with it than without it.


For those who don't follow Best Buy as a business, existential questions have been dogging it for years. The word "Titanic" often comes up.


Not all that surprising, considering brick-and-mortar electronics retail stalwarts CompUSA and Circuit City have all but disappeared.


Here's what the new CEO, Hubert Joly, said Friday during the earnings conference call, via a transcript provided by Seeking Alpha.


"In fiscal '13, we permanently closed 49 large-format stores and expected to close an additional 5 to 10 large-format stores in fiscal 2014."


That's a lot of store closings.


"People who thought we were dead have to go through the painful process of revisiting that point of view," Mr. Joly told The Wall Street Journal on Friday.


I've wondered many times if my regular weekly visit to the local Best Buy would be my last. And still do.


But I like knowing the store is there.


Best Buy is really the only electronics specialty store besides Fry's Electronics (mostly a West Coast phenomenon) that packs lots of PCs, Macs,
tablets, and phones into relatively small abutting areas, allowing you to easily comparison shop.


And Best Buy carries a good cross section of the most popular gadgets. It had Microsoft's Surface tablet pretty soon after the device came out, despite some initial display hiccups (see photo below), and it has decent stock of
Windows 8 touch-screen laptops and tablets,
Android stuff, and of course Apple products.

Of course, there's plenty to complain about. But those same gripes apply to Fry's and to just about any big box electronics retailer that's ever existed, including Circuit City and CompUSA.

What's ahead for Best Buy? Who knows? But Apple stores and now Microsoft's expanding retail presence aren't making it any easier. And during Friday's call, Best Buy executives kept talking about expanding/improving the store's online presence.

Problem is, online is often the last gasp for physical big box retailers.


Nothing to see here. Not that atypical for a Best Buy display. I went to my local Los Angeles store looking for Microsoft's Surface tablet the other day and I found this mess.

Nothing to see here. Not that atypical for a Best Buy display. I went to my local Los Angeles store looking for Microsoft's Surface tablet the other day and I found this mess.



(Credit:
Brooke Crothers)

Updated at 5:40 p.m.: corrects reference to Windows version on touch-screen 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..

US Seeks to Confirm Report of Terror Leader's Death












American military and intelligence officials said today they are attempting to confirm a report from the Chadian military of the death of al Qaeda leader Mokhtar Belmokhtar, the alleged mastermind of the deadly attack on an Algerian natural gas facility in January.


If the new report is confirmed, Belmokhtar's death would be a significant victory against a growing al Qaeda threat in northern Africa.


Belmokhtar's killing was announced on Chadian national television by armed forces spokesperson Gen. Zacharia Gobongue, who said Chadian troops "operating in northern Mali completely destroyed a terrorist base."


"The [death] toll included several dead terrorists, including their leader, Mokhtar Belmokhtar," he said.


However, an unidentified elected official in Mali told The Associated Press he doubted Belmokhtar had actually been killed and said he suspected the Chadian government of pushing the story to ease the loss of dozens of Chadian troops in operations in northern Africa.






SITE Intel Group/AP Photo











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Belmokhtar is known as Mr. Marlboro because of the millions he made smuggling cigarettes across the Sahara, but in the last few months the one-eyed terrorist leader has become one of the most sought after terrorists in the world. The attack on the plant near In Amenas in eastern Algeria left dozens of Westerns and at least three Americans dead.


Belmokhtar had formed his own al Qaeda splinter group and announced he would use his wealth to finance more attacks against American and Western interests in the region and beyond.


The U.S. has badly wanted Belmokhtar stopped and actively helped in the search by French and African military units to find him, as well as another top al Qaeda leader who was reported killed yesterday.


After the Chadian announcement, House Foreign Affairs Committee Chairman Rep. Ed Royce (R-Calif.) said Belmokhtar's death, if confirmed, "would be a hard blow to the collection of jihadists operating across the region that are targeting American diplomats and energy workers."


Steve Wysocki, a plant worker who survived the attack in In Amenas thanked "military forces from around the world," especially the Chadian military, for bringing "this terrorist to an expedient justice."


"My family and I continue to mourn for our friends and colleagues who didn't make it home and pray for their families," Wysocki told ABC News.


The CIA has been after Belmokhtar since the early 1990s, Royce's statement said.


ABC News' Clayton Sandell contributed to this report.



Read More..

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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Chilling documentary accuses Sri Lanka of war crimes






GENEVA: The Sri Lankan military committed numerous war crimes during the final months of the country's 26-year civil war, according to a documentary aired for the first time on Friday, amid vigorous protests from Colombo.

Using graphic video and pictures taken both by retreating Tamil Tiger rebels, civilians and victorious Sri Lankan troops, "No Fire Zone -- The Killing Fields of Sri Lanka" presents a chilling picture of the final 138 days of the conflict that ended in May 2009.

Filmmaker Callum Macrae insisted before the screening that the film at the UN headquarters in Geneva that it should be seen as "evidence" of the "war crimes and crimes against humanity" committed by government troops.

"The real truth is coming out," he said.

Sri Lanka's ambassador in Geneva, Ravinatha Aryasinha, strongly protested the screening of the film on the sidelines of the ongoing UN Human Rights Council.

He described it as "part of a cynical, concerted and orchestrated campaign" to influence the debate in the council about his country.

Human Rights Watch and Amnesty International, which hosted the screening, are calling for the council to order an international probe.

They charge that Sri Lanka's domestic Lessons Learnt and Reconciliation Commission (LLRC) has glossed over the military's role.

The film for instance alleges that a "no fire zone" set up by the government in January, 2009, basically functioned as a trap for the hundreds of thousands of civilians who flooded into it in the hope of finding safety.

The area was heavily shelled, and in the film maimed and bloodied bodies, of men, women and children, lay strewn.

The UN has estimated that some 40,000 people were killed in the final months of the war, most of them due to indiscriminate shelling by the Sri Lankan military.

Peter Mackay, a UN worker who was trapped inside the zone for two weeks, questioned in the film why the government would set up the "no fire zone" within range of all of their artillery.

"Either you don't care if you kill the people in that safe zone or you are actively targeting them," he said, adding that he believed the latter was true.

He and others describe how aid-centres and make-shift hospitals were shelled soon after UN or Red Cross workers informed the government of their coordinates, which is ironically standard practice to ensure that such places are spared in bombing campaigns.

The footage provided by the retreating Tamil Tigers and civilians is devastating, showing parents wailing over their dying and dead children, but the images provided by the government forces are perhaps even more shocking.

Video of a Tamil Tigers commander first being interrogated, and then a picture of his mutilated body in the dirt; naked and bound prisoners coldly executed; dead, naked women, who have clearly been sexually abused filmed amid degrading comments by onlooking soldiers.

And then there is footage of the 12-year-old son of Tamil Tiger leader Velupillai Prabhakaran, Balachandran, whose body is seen with five bullet holes in his chest.

He was not caught in cross-fire: a separate video shot two hours earlier, shows him sitting in military custody in a bunker eating a biscuit.

The Sri Lankan government has cast doubt on the authenticity of the footage, with Aryasinha insisting on Friday it was of "dubious origin".

Macrae however insisted that all the footage had been carefully checked and analysed to ensure none of it had been tampered with.

"All of it is, I'm afraid, genuine," he said.

- AFP/fa



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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+


Read More..

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."


Read More..

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.






Read More..