Reddit reportedly seeks investors with influence

With Reddit users flocking to the site more than ever, now seems like the perfect time for the company to go searching for investors. Which is exactly what it's doing, but it's not cash that Reddit is after.

According to AllThingsD, the company is seeking certain elite investors that could help with company input -- rather than just fork over a wad of dough. A recent article by TechCrunch noted that the company's valuation has jumped to $400 million, but, according to AllThingsD, Reddit is actually only after around $1 million.

When Reddit was spun out in 2011 from the company that acquired it, Conde Nast, it had $20 million saved up, according to AllThingsD. Since then, the bare-bones company has only spent around $2 million. Apparently, it doesn't take a lot of money to keep the site staffed and running. By the same token, it's not likely that Reddit will become a cash cow for investors wanting a big return either. So, anyone considering an investment in the company would probably need to be interested the business also.

Reddit has been on the up and up ever since it was acquired in 2006. At that time, it said was getting 700,000 page views a day. By September 2011, when it spun out from Conde Nast, it got 1.6 billion page views a month on 21 million unique users. And in October 2012, the site reported more than 3.8 billion monthly page views and more than 46 million unique visitors.

One of the ways Reddit has driven more traffic to its site this past year is by hosting high-level AMAs, or "ask me anything" sessions. In August, Reddit hosted President Barack Obama, whose impromptu hour-long interview crippled the site's servers. Reddit has also done AMAs with the Mars Curiosity rover team, Gangnam Style's PSY, and U.S. Rep. Zoe Lofgren, who asked users for ideas on a bill to protect Web sites accused of copyright violations.

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

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Embryonic Sharks Freeze to Avoid Detection

Jane J. Lee

Although shark pups are born with all the equipment they'll ever need to defend themselves and hunt down food, developing embryos still stuck in their egg cases are vulnerable to predators. But a new study finds that even these baby sharks can detect a potential predator, and play possum to avoid being eaten.

Every living thing gives off a weak electrical field. Sharks can sense this with a series of pores—called the ampullae of Lorenzini—on their heads and around their eyes, and some species rely on this electrosensory ability to find food buried in the seafloor. (See pictures of electroreceptive fish.)

Two previous studies on the spotted catshark (Scyliorhinus canicula) and the clearnose skate (Raja eglanteria)—a relative of sharks—found similar freezing behavior in their young. But new research by shark biologist and doctoral student Ryan Kempster at the University of Western Australia has given scientists a more thorough understanding of this behavior.

It all started because Kempster wanted to build a better shark repellent. Since he needed to know how sharks respond to electrical fields, Kempster decided to use embryos. "It's very hard to test this in the field because you need to get repeated responses," he said. And you can't always get the same shark to cooperate multiple times. "But we could use embryos because they're contained within an egg case."

Cloaking Themselves

So Kempster got his hands on 11 brownbanded bamboo shark (Chiloscyllium punctatum) embryos and tested their reactions to the simulated weak electrical field of a predator. (Popular pictures: Bamboo shark swallowed whole—by another shark.)

In a study published today in the journal PLoS One, Kempster and his colleagues report that all of the embryonic bamboo sharks, once they reached later stages of development, reacted to the electrical field by ceasing gill movements (essentially, holding their breath), curling their tails around their bodies, and freezing.

A bamboo shark embryo normally beats its tail to move fresh seawater in and out of its egg case. But that generates odor cues and small water currents that can give away its position. The beating of its gills as it breathes also generates an electrical field that predators can use to find it.

"So it cloaks itself," said neuroecologist Joseph Sisneros, at the University of Washington in Seattle, who was not involved in the study. "[The embryo] shuts down any odor cues, water movement, and its own electrical signal."

Sisneros, who conducted the previous clearnose skate work, is delighted to see that this shark species also reacts to external electrical fields and said it would be great to see whether this is something all shark, skate, and ray embryos do.

Marine biologist Stephen Kajiura, at Florida Atlantic University, is curious to know how well the simulated electrical fields compare to the bamboo shark's natural predators—the experimental field was on the higher end of the range normally given off.

"[But] they did a good job with [the study]," Kajiura said. "They certainly did a more thorough study than anyone else has done."

Electrifying Protection?

In addition to the freezing behavior he recorded in the bamboo shark embryos, Kempster found that the shark pups remembered the electrical field signal when it was presented again within 40 minutes and that they wouldn't respond as strongly to subsequent exposures as they did initially.

This is important for developing shark repellents, he said, since some of them use electrical fields to ward off the animals. "So if you were using a shark repellent, you would need to change the current over a 20- to 30-minute period so the shark doesn't get used to that field."

Kempster envisions using electrical fields to not only keep humans safe but to protect sharks as well. Shark populations have been on the decline for decades, due partly to ending up as bycatch, or accidental catches, in the nets and on the longlines of fishers targeting other animals.

A 2006 study estimated that as much as 70 percent of landings, by weight, in the Spanish surface longline fleet were sharks, while a 2007 report found that eight million sharks are hooked each year off the coast of southern Africa. (Read about the global fisheries crisis in National Geographic magazine.)

"If we can produce something effective, it could be used in the fishing industry to reduce shark bycatch," Kempster said. "In [America] at the moment, they're doing quite a lot of work trying to produce electromagnetic fish hooks." The eventual hope is that if these hooks repel the sharks, they won't accidentally end up on longlines.

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Arias Caught Lying to Cops in Recorded Phone Calls

Jodi Arias blatantly lied to police who asked her about Travis Alexander's death, telling them in recorded phone calls that she kept trying to call and message Alexander the week of his death but never heard back from him.

The phone calls were played as evidence during the fourth day of Arias' trial, in which she is charged with murder and could face the death penalty if convicted of killing Alexander in a "depraved and heinous" way. Arias has admitted to killing her former boyfriend, but claims it was self-defense.

During the phone conversations played in court, Arias can be heard telling Mesa, Ariz., detective Esteban Flores that she last talked to Alexander on Tuesday night, June 3, 2008, around 10 p.m. She had been in Los Angeles, about to leave to go to Utah to visit a new love interest, she said.

After June 3, he stopped calling her back, she said.

Photos of Key Players and Evidence in the Jodi Arias Murder Trial

"On Tuesday night (I talked to him), it was brief though, 10 o'clock maybe. I'd say 10 p.m. or 9 - 9:30. I was calling people because I was bored on the road. He was nice and cordial, but kind of acting like he had hurt feelings," she said.

"I may have called him Wednesday, from the road, and I sent him a couple of text messages, and a couple of pictures," she said, though Alexander didn't pick up and his voice mailbox was full. "That's unusual. He deletes all of his messages. I didn't want to be obsessive about it because we're not together anymore and I didn't like to call too much."

According to court records, Arias, 32, actually went to Alexander's home on in Mesa on Wednesday morning. There, the pair had sex and took graphic photos of one another with Alexander's camera.

Then, Arias is believed to have killed Alexander, 30, in his shower by stabbing him, slashing his throat from ear to ear, and shooting him in the head.

In the phone conversations, Arias told Flores that she considered calling Alexander's friends when he stopped returning her calls on Wednesday, but didn't want to act like "his mother."

Alexander's friends found his body five days later with stab wounds and a bullet wound, lying in blood in his home.

Flores asked Arias if she ever considered buying a gun, she said she was too scared of handguns.

Jodi Arias/Myspace | ABC News

Jodi Arias Murder Trial: Who Is the Alleged Killer? Watch Video

Jodi Arias Trial: Defense Claims Victim Was Sex Deviant Watch Video

"I've looked into handguns. I have a list of things I'm scared of that I'm trying to overcome," she said. "I got that from Travis, you know, to push yourself out of your comfort zone, and do things you're afraid of. But handguns are expensive and not really in my price range right now."

Arias is accused of stealing her grandmother's handgun and using it to shoot Alexander in the head during the attack.
The detective interviewed Arias by phone multiple times in June after Alexander's body was discovered by his friends on June 9.

Arias was indicted on July 9, 2008, and changed her story again before her arraignment, telling a TV news station that she was at Alexander's house when he was killed and witnessed two intruders kill him.

After she was arraigned, Arias told police she killed Alexander, but did it in self-defense. Arias's attorneys have said that Alexander was controlling and abusive toward Arias, and described him as a "sexual deviant."

In earlier testimony in court today, Arias's new love interest, Ryan Burns, testified that Arias showed up to his house on the morning of Thursday, Dec. 5, just 24 hours after she killed Alexander.

There, the pair cuddled, kissed, and watched movies, according to Burns.

Burns, who met Arias at a business conference in spring, 2008, said he exchanged frequent long phone calls and online conversations with Arias before inviting her to come visit him in West Jordan, Utah, in June. Arias lived in California at the time.

She arrived at Burns's home 24 hours after she was expected there, telling him that she got lost, drove the wrong way on a freeway for a few hours, fell asleep for awhile, and then got lost again, Burns testified today.

She never told him that she had confronted Alexander with a knife or gun and ended up killing him just hours before their date.

When she arrived, the pair quickly got physical, he testified.

"We went back to my house. We talked for awhile, and agreed that we were going to watch a movie. At some point we were talking and we kissed. Every time we started kissing it got a little more escalated. Our clothes never came off, but at some point she was kissing my neck, I was kissing hers, but our clothes never came off," he said.

Burns said that both he and Arias stopped kissing at the time, though they again became physically involved later in the evening when Arias climbed on top of Burns and began kissing him. Burns said that they stopped kissing because he did not want her to "regret the visit" because of her Mormon beliefs about sex.

He also told prosecutors upon questioning that Arias was physically strong.

"She's very fit," he said, describing their encounter when she climbed on top of him. "She's very strong. She has close to a six pack (of abs)."

Prosecutors likely asked about the strength of Arias because in testimony Tuesday Maricopa County medical examiner Kevin Horn said Alexander was stabbed so forcefully that the blade chipped his skull and his neck was cut all the way back to the spinal cord.

Burns, who is also a Mormon, said he noticed two bandages on Arias's hand when she arrived at his house, which she told him she got when a glass broke at her place of employment, Margaritaville.

During her visit, the pair also went to a business meeting and went out with Burns' friends where Burns described Arias as acting "shy" and a "little awkward."

"She was fine, she was laughing about simple little things like any other person. I never once felt like anything was wrong during the day. With a crowd she was a little awkward in social areas, but one on one she was very talkative and excitable," he said.

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Pruney fingers give us better grip underwater

WHY do our fingers do prune impressions when soaked? It could be an adaptation that gives us better grip underwater.

Fingers and toes wrinkle in water after about 5 minutes due to the constriction of blood vessels. This reduction in volume pulls the skin inward, but as the skin's surface area cannot change, it wrinkles. A study in 2011 showed that wrinkles form a pattern of channels that divert water away from the fingertip – akin to rain treads on tyres. The team thought that this could aid grip.

To find out, Tom Smulders and his team at Newcastle University, UK, timed people as they transferred wet or dry objects from one box to another with and without wrinkled fingers.

With wrinkles, wet objects were transferred about 12 per cent faster than with unwrinkled fingers. The time it took to transfer dry objects was the same regardless of wrinkles.

So why aren't our digits always prune-like? "With wrinkles, less of your skin surface touches the object, so there may be issues of sensitivity," Smulders suggests.

Journal reference: Royal Society Biology Letters, DOI: 10.1098/rsbl.2012.0999.

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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Japan plans US$2.1b military spend in stimulus package: official

TOKYO: Japan plans to spend $2.1 billion on its military over the next few months as part of a huge stimulus package, a defence ministry official said Wednesday, amid growing concerns over a rising China.

The cash is in addition to the regular military spending for 2012-13 and is separate from a boosted budget request for next fiscal year that ruling party policy makers called for on Tuesday.

"We will request 180.5 billion yen to be allocated to military spending from a stimulus package," a defence ministry spokesman told AFP, adding that some of the cash will be used to buy PAC-3 surface-to-air anti-ballistic missile systems and modernise four F-15 fighter jets.

The request for funds has to be approved by the finance ministry before being officially included in the stimulus the government is set to announce later this month, reportedly worth 13.1 trillion yen for this fiscal year to March.

The announcement came a day after Prime Minister Shinzo Abe's ruling Liberal Democratic Party said Japan will increase military spending for the first time in 11 years next fiscal year starting from April.

Japan is involved in a territorial tussle with China over a group of uninhabited islands in the East China Sea. Beijing has sent vessels to the area dozens of times and late last year dispatched a plane.

Nerves in Tokyo have also been rattled by an unpredictable North Korea. It sent a rocket over Japan's southern islands last month in what it insisted was a satellite launch. Tokyo and its allies said the launch was a covert ballistic missile test.

"Out of 180.5 billion yen, the defence ministry plans to use 60.5 billion yen to prepare for the changing security environment surrounding Japan," the spokesman said.

The defence ministry also plans to purchase three SH-60K patrol helicopters and to add a battery for an intermediate-range ballistic missile system, he said.

"We need to update our equipment as the security environment surrounding Japan is becoming harsher as North Korea has test-launched missiles twice in the last year and tensions with China continue," he said.

Under usual precedent, 70-80 percent of a defence order must be spent with domestic firms, although this is not a legal requirement, he said.

-AFP/ac

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Stylus lets you 'touch' normal screens, except when it won't

The APEN Touch8 Smart Pen brings touch to non-touch screens -- when it works.

(Credit:
Seth Rosenblatt/CNET)

LAS VEGAS--APEN's Touch8 Smart Pen is a soft-tip stylus that gives non-touch screen Windows 8 computers the power of touch. It's a great idea, but it can't quite leave its mark.

The idea is clever. Instead of missing out on touch functionality on an otherwise high-end system that lacks a touch screen, pick up an $80 USB dongle and its connected pen to bring that touchless monitor into the future. There's no word yet on when it will be available.

The Touch8 Smart Pen works on desktop monitors and laptops of up to 17 inches and doesn't require additional drivers, so setup is uncomplicated. The Smart Pen itself connects to a small box that clips onto the side of your monitor, which reads the pen's contact with the screen.

After connecting the box to your computer via USB, you must calibrate the pen by touching four crosshairs on your screen. From there, touching the soft-tip of the pen to your monitor will have the same effect as using your finger on an actual touch screen.

At least, that's how it works in theory. When I tested it this morning, even re-calibrating the pen didn't fix problems it had accessing the Charms bar on the right edge of
Windows 8, and it worked only about half the time on the apps bar on the left edge.

The pen has other problems, as well. The soft tip that I tested ensured that the monitor wouldn't get scratched, but it also made precision a challenge.

The pen could learn a trick or two from Wacom, too. The drawing
tablet-maker's stylii have had mouse buttons on them for years. The Touch8 Smart Pen doesn't, so every time you want to use the mouse you have to put down the pen. It's an annoying extra step that negates much of the pen's utility.

I like the idea of bringing touch screen functionality to older monitors that are otherwise in excellent condition, especially through a low-cost USB device, but the Touch8 Smart Pen lacks the right... well, touch.

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Pictures: Wildfires Scorch Australia Amid Record Heat

Photograph by Jo Giuliani, European Pressphoto Agency

Smoke from a wildfire mushrooms over a beach in Forcett, Tasmania, on January 4. (See more wildfire pictures.)

Wildfires have engulfed southeastern Australia, including the island state of Tasmania, in recent days, fueled by dry conditions and temperatures as high as 113ºF (45ºC), the Associated Press reported. (Read "Australia's Dry Run" inNational Geographic magazine.)

No deaths have been reported, though a hundred people are unaccounted for in the town of Dunalley, where the blazes destroyed 90 homes.

"You don't get conditions worse than this," New South Wales Rural Fire Service Commissioner Shane Fitzsimmons told the AP.

"We are at the catastrophic level, and clearly in those areas leaving early is your safest option."

Published January 8, 2013

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Holmes Played Childish Games After Aurora Carnage

As police confronted the movie theater carnage and a massive booby trap left behind by accused Aurora gunman James Holmes, the suspect loopily played with hand puppets, tried to stick a metal staple in an electrical socket and clamly flipped a styrofoam cup, according to court testimony today.

Holmes, 25, displayed the bizarre behavior once he was in custody and taken to Aurora police headquarters after the shooting that left 12 people dead and dozens injured, the lead investigator in the case testified today.

While being cross examined by Colorado public defender Daniel King, Police Detective Craig Appel was asked about the observations of two Aurora officers assigned to watch over Holmes in an interrogation room.

Appel said that to preserve possible gunshot residue, police had placed paper bags over Holmes' hands. One officer, King said, noted in a report that Holmes began moving his hands "in a talking puppet motion."

Click here for full coverage of the Aurora movie theater shooting.

King asked if Appel was also aware that the officer "observed Holmes take a staple out of the table and tried to stick it in an electrical socket?" Appel confirmed Holmes' actions.

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The officers also noted that they watched as Holmes began playing with an empty styrofoam cup, trying to "flip it" on the table.

While Holmes was carrying out his childish antics, police were puzzling over a complex booby trap Holmes had left behind in his apartment, according to testimony.

A gasoline-soaked carpet, loud music and a remote control car were part of Holmes' plan to trick someone into triggering a blast that would destroy his apartment and lure police to the explosion while he shot up a movie theater in Aurora, Colo., according to court testimony.

FBI agent Garrett Gumbinner told the court that he interviewed Holmes on July 20, hours after he killed 12 and wounded 58 during the midnight showing of "The Dark Knight Rises."

"He said he rigged the apartment to explode to get law enforcement to send resources to his apartment instead of the theater," Gumbinner said.

His plan failed to prompt someone into triggering the bombs.

Gumbinner said Holmes had created two traps that would have set off the blast.

The apartment was rigged with a tripwire at the front door connected to a mixture of chemicals that would create heat, sparks and flame. Holmes had soaked the carpet with a gasoline mixture that was designed to be ignited by the tripwire, Gumbinner said.

"It would have caused fire and sparks," the agent said, and "would have made the entire apartment explode or catch fire."

Holmes had set his computer to play 25 minutes of silence followed by loud music that he hoped would cause a disturbance loud enough that someone would call police, who would then respond and set off the explosion by entering the apartment.

Gumbinner said Holmes also told him he rigged a fuse between three glass jars that would explode. He filled the jars with a deadly homemade chemical mixture that would burn so hot it could not be extinguished with water.

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World's oldest pills treated sore eyes

In ancient Rome, physicians treated sore eyes with the same active ingredients as today. So suggests an analysis of pills found on the Relitto del Pozzino, a cargo ship wrecked off the Italian coast in around 140 BC.

"To our knowledge, these are the oldest medical tablets ever analysed," says Erika Ribechini of the University of Pisa in Italy, head of a team analysing the relics. She thinks the disc-shaped tablets, 4 centimetres across and a centimetre thick, were likely dipped in water and dabbed directly on the eyes.

The tablets were mainly made of the zinc carbonates hydrozincite and smithsonite, echoing the widespread use of zinc-based minerals in today's eye and skin medications. Ribechini says there is evidence that Pliny the Elder, the Roman physician, prescribed zinc compounds for these uses almost 250 years after the shipwreck in his seminal medical encyclopaedia, Naturalis Historia.

The tablets were also rich in plant and animal oils. Pollen grains from an olive tree suggest that olive oil was a key ingredient, just like it is today in many medical and beauty creams, says Ribechini.

The tablets were discovered in a sealed tin cylinder called a pyxis (see image above). The tin must have been airtight to protect its contents from oxygen corrosion.

"Findings of such ancient medicines are extremely rare, so preservation of the Pozzino tablets is a very lucky case," says Ribechini.

The cargo of the wreck, discovered in 1989, is rich in other medical equipment, including vials and special vessels for bloodletting. This suggests that one of the passengers may have been a physician.

Journal reference: PNAS, DOI: 10.1073/pnas.1216776110

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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Obama to host Afghan president Friday at White House

WASHINGTON: US President Barack Obama will host Afghan President Hamid Karzai at the White House on Friday for talks centered on the long-term security compact between the two countries.

Obama looks forward to "discussing our continued transition in Afghanistan, and our shared vision of an enduring partnership between the United States and Afghanistan," a White House statement said.

The Afghan leader has expressed support for keeping US troops in Afghanistan, but sensitive details -- including immunity for American soldiers and the transfer of detainees into Afghan custody -- are still under negotiation.

Karzai's relationship with Washington has been troubled in recent years and fears remain that attention for Afghanistan, heavily dependent on international aid, could plummet after 2014, plunging it back into political turmoil.

The Afghan president's scheduled trip to the United States was formally confirmed on the same day as Obama revealed his nominations to head up the CIA and the Pentagon during his second White House term.

Obama, who last visited Kabul in May, named Chuck Hagel to lead the Pentagon and tapped John Brennan to replace scandal-tainted David Petraeus as CIA chief.

The US president last year signed a pact on future relations and declared that the "time of war" was ending in Afghanistan.

But the Defense Department reportedly has prepared plans to leave roughly 3,000, 6,000 or 9,000 America troops in the war-wracked state.

General John Allen, commander of US and NATO forces in Afghanistan, had earlier suggested leaving 6,000 to 20,000 American troops, US media reports have said.

Outgoing Defense Secretary Leon Panetta has said the force would focus on preventing Al-Qaeda, which was sheltered by the 1996-2001 Taliban government, from regaining a firm foothold in Afghanistan.

The number of foreign troops battling the Taliban-led insurgency has already fallen to 100,000 from about 150,000. There are currently 66,000 US troops.

The conflict has become increasingly unpopular in the United States, but some lawmakers in Washington have accused Obama of pushing for a hasty exit.

Karzai, who left Kabul on Monday, is expected to kick off his US trip by visiting his wounded spy chief, Asadullah Khalid, at an American hospital on Tuesday.

-AFP/ac

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