Rusty rocks reveal ancient origin of photosynthesis

SUN-WORSHIP began even earlier than we thought. The world's oldest sedimentary rocks suggest an early form of photosynthesis may have evolved almost 3.8 billion years ago, not long after life appeared on Earth.

A hallmark of photosynthesis in plants is that the process splits water and produces oxygen gas. But some groups of bacteria oxidise substances like iron instead – a form of photosynthesis that doesn't generate oxygen. Evolutionary biologists think these non-oxygen-generating forms of photosynthesis evolved first, giving rise to oxygen-generating photosynthesis sometime before the Earth's atmosphere gained oxygen 2.4 billion years ago (New Scientist, 8 December 2012, p 12).

But when did non-oxygen-generating photosynthesis evolve? Fossilised microbial mats that formed in shallow water 3.4 billion years ago in what is now South Africa show the chemical fingerprints of the process. However, geologists have long wondered whether even earlier evidence exists.

The world's oldest sedimentary rocks – a class of rock that can preserve evidence of life – are a logical place to look, says Andrew Czaja of the University of Cincinnati in Ohio. These rocks, which are found in Greenland and date back almost 3.8 billion years, contain vast deposits of iron oxide that are a puzzle. "What could have formed these giant masses of oxidised iron?" asks Czaja.

To investigate, he analysed the isotopic composition of samples taken from the oxidised iron. He found that some isotopes of iron were more common than they would be if oxygen gas was indiscriminately oxidising the metal. Moreover, the exact isotopic balance varied subtly from point to point in the rock.

Both findings make sense if photosynthetic bacteria were responsible for the iron oxide, says Czaja. That's because these microbes preferentially oxidise only a small fraction of the dissolved iron, and the iron isotopes they prefer vary slightly as environmental conditions change (Earth and Planetary Science Letters, doi.org/kh5). His findings suggest that this form of photosynthesis appeared about 370 million years earlier than we thought.

It is "the best current working hypothesis for the origin of these deposits", says Mike Tice of Texas A&M University in College Station – one of the team who analysed the 3.4-billion-year-old microbial mats from South Africa.

William Martin at the University of Düsseldorf, Germany, agrees. "Anoxygenic photosynthesis is a good candidate for the isotope evidence they see," he says. "Had these fascinating results been collected on Mars, the verdict of the jury would surely remain open," says Martin Brasier at the University of Oxford. "But [on Earth] opinion seems to be swinging in the direction of non-oxygen-generating photosynthesis during the interval from 3.8 to 2.9 billion years ago."

This article appeared in print under the headline "Photosynthesis has truly ancient origins"

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Hollande wants proper labels on meat meals

PARIS: France's president said Saturday he wanted to see proper labelling of meat in ready-made meals to avert a repeat of the scandal over horsemeat being passed off as beef.

"I want there to eventually be mandatory labels on the meat contained in prepared meals," Francois Hollande said while visiting an agricultural show in Paris.

"Until then, I will support... all initiatives for voluntary labelling" so that "consumers know the origin of the products they are consuming, especially meat."

A vast food scandal erupted in Europe in January after horsemeat was initially found in so-called beef ready-made meals and burgers in Britain and Ireland. It has since spread as far as Hong Kong.

French firm Spanghero has been at the heart of the scandal after it allegedly passed off 750 tonnes of horsemeat as beef, with the product eventually finding its way into 4.5 million "beef" products sold across Europe.

-AFP/fl

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Water tank body still mystery

STORY HIGHLIGHTS

• Cause of death deferred, pending further examination


• Tests show hotel water is free of harmful bacteria, health department says


• Canadian university says woman not registered in classes this year


• Water "had a very funny, sweety, disgusting taste," one guest says

Los Angeles (CNN) -- Two days after the grisly discovery, the case of the Los Angeles hotel water tank corpse is a mystery with many unanswered questions.

The decomposing body of Elisa Lam floated inside a water tank on the roof of the Cecil Hotel while guests brushed their teeth, bathed and drank with water from it for as long as 19 days.

A maintenance worker, checking on complaints about the hotel's water, found the 21-year-old Canadian tourist inside one of four water cisterns Tuesday morning, Los Angeles Police Sgt. Rudy Lopez said.

How and where did Elisa Lam die?

Body found in hotel water tank

HIDE CAPTION

Los Angeles robbery-homicide detectives are treating this as a suspicious death for obvious reasons, Lopez said. Falling into a covered water tank behind a locked door on top of a roof would be an unusual accident.

An autopsy was completed, but the cause of death is deferred pending further examination, assistant chief coroner Ed Winter said Thursday. That may take six to eight weeks.

It will be several weeks before investigators have the toxicology lab report which would show whether Lam had any drugs in her system.

Any marks, injuries or wounds may suggest Lam died elsewhere and was dumped into the tank by her killer.

Water in Lam's lungs could be a sign that she drowned, but it might not tell why she was inside the small tank.

One clue comes from security camera video of Lam inside a hotel elevator the last day she was seen.

She is seen walking into the elevator, pushing the buttons for four floors and then peering out of the opened elevator door as if she is hiding or looking for someone. Clad in a red hoodie, Lam at one point walks out of the elevator before returning to it, pushing the buttons again. She then stands outside the open elevator doorway, motioning with her hands, before apparently walking away.

Lam checked into the Cecil Hotel five days earlier, January 26, on her way to Santa Cruz, California, according to police in her hometown of Vancouver, British Columbia.

Why did it it take so long to find Lam?

Lam's parents reported the University of British Columbia student missing in early February. Her daily calls home stopped on January 31, police told reporters on February 6 at a Los Angeles news conference.

Because it was an international case -- and her parents and sister flew to California to find answers -- the case may have gotten more attention than most of the several thousand missing person reports made in Los Angeles each year.

A search of the hotel then found no sign of Lam, including a trip to the roof with a police search dog, Lopez said.

Strange things began happening with the hotel's water supply later in the month, according to Sabina and Michael Baugh, a British couple who spent eight days there until checking out Wednesday. The water pressure dropped to a trickle at times.

"The shower was awful," Sabina Baugh said. "When you turned the tap on, the water was coming black first for two seconds and then it was going back to normal."

The tap water "tasted horrible," Baugh said. "It had a very funny, sweety, disgusting taste. It's a very strange taste. I can barely describe it."

But for a week, they never complained. "We never thought anything of it," she said. "We thought it was just the way it was here."

Knowing now what they didn't know then about the water is sickening, Michael Baugh said. "It makes you feel literally physically sick, but more than that you feel it psychologically. You think about it and it's not good."

Eventually, the hotel maintenance department investigated the water problem, sending a worker to look into the tank, police said. He saw Lam's lifeless body at the bottom.

A hard-working family

Randy Schmidt, a spokesman for the University of British Columbia, said Lam was registered in a class in August, but was not registered in any classes this year, according to records.

"Unfortunately, we do not have much more to say, other than to extend our deepest sympathies to the family," said Schmidt.

According to Los Angeles police, Lam tended to use public transportation.

Teika Steins, manager of a hostel in Toronto, Canada, said Lam stayed a week there in early December. Steins called the young woman friendly and outgoing.

Flowers and signs were left Thursday outside the temporarily-closed Lam family restaurant in Burnaby, British Columbia.

Tanya Grohmann, who works nearby, said she was saddened by the loss and the fact the family did not know what happened to the young woman.

"They are a hard-working family. They immigrated here," she told CNN affiliate CTV. "They've been in the neighborhood for nine years working. ... They're honest people."

Why did hotel stay open after discovery?

New guests continued to check into the Cecil in the hours after firefighters removed Lam's body from the water tank. But each guest was asked to sign a waiver releasing the hotel from liability if they become ill. "You do so at your own risk and peril," the hotel's release said. Guests who already paid for their rooms would not get refunds if they move out, it said.

CNN's repeated calls to the hotel for comment were unreturned Wednesday and Thursday.

The Los Angeles Public Health Department immediately tested the water supply, but told the manager they could stay open as long as they provided bottle water and warned guests not to drink the tap water.

The results of the testing showed no harmful bacteria in the tank or the pipes, according to Angelo Bellomo, director of environmental health for the department. Chlorine in the city's water may be the reason it is safe, he said.

All of the tanks and pipes in the building still must be drained, flushed and sanitized, Bellomo said. The water will be retested after that process, which should take several days, he said.

Several guests interviewed by CNN on Wednesday indicated the hotel management did not tell them about the body in the water supply they had been drinking and bathing in.

Qui Nguyen learned about it from a CNN reporter Wednesday morning. He decided not to sign the waiver and instead find a new hotel.

Many of its guests are tourists from other countries drawn by the hotel's billing as a "European-style" hotel that is the perfect accommodation for "spend-thrifty travelers."

But if they take Kim Cooper's tour bus ride through the neighborhood, they would hear about the Cecil being the former temporary home to at least two convicted murderers, including "Night Stalker" serial killer Richard Ramirez. Ramirez paid $14 a day to stay on the 14th floor during his 1980s killing spree, Cooper said.

The Cecil Hotel is "in the heart of the action, allowing our guest to embrace the city and the surrounding areas that make Los Angeles famous," according to the description you'll hear when you call there and are placed on hold.

In fact, the hotel is just a few blocks away from the infamous Skid Row district in downtown Los Angeles, but 16 miles from the beaches of Santa Monica, eight miles from Hollywood's Walk of Fame and 12 miles from glamorous streets of Beverly Hills that are prominently featured on the Cecil's website.

If you want a reservation at the Cecil you will have to wait until next month. The website said the hotel is "sold out" until March 1. After then, you can book a room for $65.

Hotel with corpse in water tank has notorious past

CNN's Kyung Lah, Chandler Friedman and Chuck Conder contributed to this report.

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Pentagon grounds F-35 fleet after engine crack found

Updated 9:03 PM ET

WASHINGTON The Pentagon on Friday grounded its fleet of F-35 fighter jets after discovering a cracked engine blade in one plane.

The problem was discovered during what the Pentagon called a routine inspection at Edwards Air Force Base, Calif., of an F-35A, the Air Force version of the sleek new plane. The Navy and the Marine Corps are buying other versions of the F-35, which is intended to replace older fighters like the Air Force F-16 and the Navy F/A-18.

All versions -- a total of 51 planes -- were grounded Friday pending a more in-depth evaluation of the problem discovered at Edwards. None of the planes have been fielded for combat operations; all are undergoing testing.

In a brief written statement, the Pentagon said it is too early to know the full impact of the newly discovered problem.

A watchdog group, the Project on Government Oversight, said the grounding is not likely to mean a significant delay in the effort to field the stealthy aircraft.

"The F-35 is a huge problem because of its growing, already unaffordable, cost and its gigantically disappointing performance," the group's Winslow Wheeler said. "That performance would be unacceptable even if the aircraft met its far-too-modest requirements, but it is not."

The F-35 is the Pentagon's most expensive weapons program at a total estimated cost of nearly $400 billion. The Pentagon envisions buying more than 2,400 F-35s, but some members of Congress are balking at the price tag.

Friday's suspension of flight operations will remain in effect until an investigation of the problem's root cause is determined.

The Pentagon said the engine in which the problem was discovered is being shipped to a Pratt & Whitney facility in Connecticut for more thorough evaluation.

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Cyberattacks Bring Attention to Security Reform

Recent accusations of a large-scale cyber crime effort by the Chinese government left many wondering what immediate steps the president and Congress are taking to prevent these attacks from happening again.

On Wednesday, the White House released the administration's Strategy on Mitigating the Theft of U.S. Trade Secrets as a follow-up to the president's executive order. The strategy did not outwardly mention China, but it implied U.S. government awareness of the problem.

"We are taking a whole of government approach to stop the theft of trade secrets by foreign competitors or foreign governments by any means -- cyber or otherwise," U.S. Intellectual Property Enforcement Coordinator Victoria Espinel said in a White House statement.

As of now, the administration's strategy is the first direct step in addressing cybersecurity, but in order for change to happen Congress needs to be involved. So far, the Cyber Intelligence Sharing and Protection Act (CISPA) is the most notable Congressional legislation addressing the problem, despite its past controversy.

Last April, CISPA was introduced by House Intelligence Committee Chairman Mike Rogers, R-Mich., and Rep. Dutch Ruppersberger, D-Md. The act would allow private companies with consumer information to voluntarily share those details with the NSA and the DOD in order to combat cyber attacks.

Peter Parks/AFP/Getty Images

The companies would be protected from any liabilities if the information was somehow mishandled. This portion of the act sounded alarm bells for CISPA's opponents, like the ACLU, which worried that this provision would incentivize companies to share individuals' information with disregard.

CISPA passed in the House of Representatives, despite a veto threat from the White House stemming from similar privacy concerns. The bill then died in the Senate.

This year, CISPA was reintroduced the day after the State of the Union address during which the president declared an executive order targeting similar security concerns from a government standpoint.

In contrast to CISPA, the executive order would be initiated on the end of the government, and federal agencies would share relevant information regarding threats with private industries, rather than asking businesses to supply data details. All information shared by the government would be unclassified.

At the core of both the executive order and CISPA, U.S. businesses and the government would be encouraged to work together to combat cyber threats. However, each option would clearly take a different route to collaboration. The difference seems minimal, but has been the subject of legislative debates between the president and Congress for almost a year, until now.

"My response to the president's executive order is very positive," Ruppersberger told ABC News. "[The president] brought up how important information sharing is [and] by addressing critical infrastructure, he took care of another hurdle that we do not have to deal with."

Addressing privacy roadblocks, CISPA backers said the sharing of private customer information with the government, as long as personal details are stripped, is not unprecedented.

"Think of what we do with HIPAA in the medical professions; [doctors do not need to know] the individual person, just the symptoms to diagnose a disease," Michigan Gov. John Engler testified at a House Intelligence Committee hearing in an attempt to put the problem into context.

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Spidey-sense suit tingles when someone gets too close

FOR Peter Parker, it was a tingling sensation that alerted him to an imminent threat. Now anyone can pretend to be Spider-Man by simply donning a suit that lets you feel how close you are to a nearby object. It can even let the wearer navigate with their eyes closed.

The suit, called SpiderSense and built by Victor Mateevitsi of the University of Illinois in Chicago has small robotic arms packaged in modules with microphones that send out and pick up ultrasonic reflections from objects. When the ultrasound detects someone moving closer to the microphone, the arms respond by exerting a growing pressure on the body. Seven of these modules are distributed across the suit to give the wearer as near to 360 degree ultrasound coverage as possible.

"When someone is punching Spider-Man, he feels the sensation and can avoid it. Our suit is the same concept," says Mateevitsi. SpiderSense could help blind people to find their way more easily, he says.

Mateevitsi tested the suit out on students, getting them to stand outside on campus, blindfolded, and "feel" for approaching attackers. Each wearer had ninja cardboard throwing stars to use whenever they sensed someone approaching them. "Ninety five per cent of the time they were able to sense someone approaching and throw the star at them," says Mateevitsi.

"I'm very excited about this," says Gershon Dublon of the Massachusetts Institute of Technology, who also works on augmenting parts of the human body. Mateevitsi's work is a step on the road to giving humans truly integrated extrasensory perception, says Dublon.

Mateevitsi wants to use the suit, or just a few sensors on the arms and back, to boost cyclists' awareness of other traffic on the road. SpiderSense is due to be presented at the Augmented Human conference in Stuttgart, Germany, in March. The team now plans to add more sensors to the suit to increase its resolution.

"We humans have the senses that we are born with and we can't extend them," Mateevisti says. "But there are some threats which are very deadly, but we can't sense them, like radiation. Electronic sensors can feel those threats."

The team also plans to begin trials of SpiderSense with visually impaired people.

This article appeared in print under the headline "Back off, my Spidey senses tell me you're too close"

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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"Argo" vs "Lincoln" in knife-edge Oscars race

HOLLYWOOD: Ben Affleck's Iran hostage drama "Argo" goes into Oscars weekend a whisker ahead of Steven Spielberg's presidential "Lincoln", but the race is one of the most unpredictable in recent memory.

Veteran director Spielberg, bidding for his first best picture Oscar since "Schindler's List" in 1994, tops the nominations with 12 nods -- but "Argo" has cleaned up in Hollywood's awards season so far, despite having only seven.

Although he started the season two months ago in front, Spielberg may have to settle Sunday for the best director award -- one that Affleck cannot beat him to, having not been nominated in the category, in a perceived snub.

But again here there could be an upset, with rivals including Taiwan-born Ang Lee for "Life of Pi", David O. Russell for "Silver Linings Playbook", or even Austrian dark horse director Michael Haneke for Cannes-topping "Amour",

One near-certainty Sunday is that "Lincoln" star Daniel Day-Lewis will be named best actor, a record third for the British-Irish actor after wins in 1990 for "My Left Foot" and in 2008 for "There Will Be Blood".

The diffident Day-Lewis, known for his meticulous preparation -- he spent weeks in a wheelchair before playing Christy Brown in "My Left Foot" -- has been modest despite repeatedly taking the stage for acceptance speeches.

"Members of the Academy love surprises, so about the worst thing that can happen to you is if you've built up an expectation," he said, after winning the Screen Actors Guild (SAG) best actor award last month.

"I think they'd probably be delighted if it was anybody else," he added.

For best actress, the early favourite was Jessica Chastain, playing a CIA agent hunting Osama bin Laden in "Zero Dark Thirty", but the clever money is now on Jennifer Lawrence for her turn in "Silver Linings Playbook".

Lawrence, star of the "Hunger Games" blockbuster franchise, has won praise for moving out of her comfort zone as mixed-up widow Tiffany to Bradley Cooper's recovering bipolar Pat, in the romantic comedy with an edge.

The best supporting actress race is more open, although Anne Hathaway is probably still the frontrunner for her heart-wrenching turn in musical adaptation "Les Miserables", which is also nominated for best picture.

The most unpredictable race of all is perhaps for supporting actor, with Hollywood legend Robert De Niro tipped by some for playing Cooper's father in "Silver Linings Playbook".

But strong rivals in the category include Austrian Christoph Waltz as a white bounty hunter who frees Jamie Foxx's black slave in Quentin Tarantino's blood-spattered "Django Unchained", as well as Tommy Lee Jones in "Lincoln".

On the foreign front, the clear frontrunner is "Amour", which won the Palme d'Or at last year's Cannes Film Festival for its heart-wrenching portrayal of an elderly couple coping with encroaching physical and mental illness.

Its French female lead, Emmanuelle Riva, could even cause an upset in the best actress category, some critics believe. If she did, she would be only the sixth performer to win an Oscar in a language other than English.

Riva, who will be 86 on Sunday, is coincidentally also the oldest ever best actress nominee, and up against a shortlist including the youngest ever nominee, nine-year-old Quvenzhane Wallis for "Beasts of the Southern Wild".

"Amour" is also among the nine films nominated for best picture, although it is not seen as a favourite there.

On a more colourful note, the best animated feature contest is widely seen as a battle between Scottish-themed princess adventure "Brave" and "Wreck-It Ralph", about a video game villain fed up with being the bad guy.

The fast and fun movie pays subtle homage to generations of computer games, in a feel-good story appealing to both mainstream cinema-goers and hard-core animation filmmakers at the Academy of Motion Picture Arts and Sciences.

-AFP/fl

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Teens get strippers; mom arrested

By Jack Maddox, CNN

updated 11:32 PM EST, Wed February 20, 2013

STORY HIGHLIGHTS

• Albany-area woman is accused of hiring strippers for her son's 16th birthday


• Judy Viger, 33, is charged with five counts of endangering the welfare of a child


• Photos posted on Facebook alerted the parents of teens who attended

(CNN) -- An upstate New York mother is accused of hiring strippers for her son's 16th birthday party late last year, according to the Saratoga County District Attorney.

Judy Viger, 33, of Gansevoort is charged with five counts of endangering the welfare of a child, District Attorney James Murphy said in a statement. The parents of five teens who attended the party reported the presence of strippers to police.

The complaining parents found out that the strippers had been at the November 3 bowling party through photos posted on Facebook. The parents took the pictures to the South Glens Falls police, who then started taking witness statements, the district attorney's statement says.

One of the photos distributed by the district attorney's office shows Viger receiving a lap dance from one of the hired dancers; another picture shows a young male with another nearly nude dancer on top of him with her legs around his head.

"As difficult as it may be for us to have to weigh in on these kinds of cases, certainly exposing the unsuspecting children to this sort of 'entertainment' goes beyond the pale when it comes to what is appropriate for 14, 15 and 16 year old child," Murphy said in the statement.

CNN affiliate WRGB visited the Viger home and encountered a man who said the family "was not making statements at this time."

CNN's calls to Viger, her attorney and the adult entertainment company that provided the dancers were not immediately returned.

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Georgia executes man lawyers claimed was mentally ill

JACKSON, Ga. A 38-year-old inmate convicted of killing two college students in 1995 was executed in Georgia on Thursday, apologizing to the families of both victims before being injected at a state prison.

Andrew Allen Cook was pronounced dead at 11:22 p.m., about 14 minutes after he was injected with the sedative pentobarbital. He was the first inmate to be executed since the state changed its procedure in July from a three-drug combination to a single dose.

With his last words, he apologized to the families of Mercer University students Grant Patrick Hendrickson, 22, and Michele Lee Cartagena, 19, who were shot several times as they sat in a car at Lake Juliette, which is about 75 miles south of Atlanta. He said what he did was senseless.

"I'm sorry," Cook said as he was strapped to a gurney. "I'm not going to ask you to forgive me. I can't even do it myself."

He also thanked his family for "their support, for being with me and I'm sorry I took so much from you all."

The Georgia Appeals Court on Wednesday temporarily stayed Cook's execution to consider a challenge to the state's lethal injection procedure. But the Georgia Supreme Court lifted the stay Thursday and all other appeals were exhausted.

Cook's lawyers have argued at various stages in their appeals of his death sentence that he suffered from mental illness and was being treated for depression up to the time of his death.

Mary Hendrickson, the mother of one of the victims, recently told television station WMAZ-TV in Macon she's been waiting 18 years for justice.

"I think that's what it was: the devil's work," she said. "When all that is going on, I was just thinking to myself, 'Well, the devil is not going to win. He's not going to win over my heart. He is not going to win."'

The single-drug injection began at about 11:08 p.m. Cook blinked his eyes a few times, and his eyes soon got heavy. His chest was heaving for about two or three minutes as his eyes closed. Not too long after, two doctors examined him and nodded and Carl Humphrey, warden of the state prison in Jackson, pronounced him dead.

Corrections officials said Thursday evening that Cook had received visits from family earlier in the day and ate the last meal he had requested -- steak, a baked potato, potato wedges, fried shrimp, lemon meringue pie and soda.

A jury sentenced Cook to death after he was convicted in the January 2, 1995 slayings at Lake Juliette. Cook wasn't charged until more than two years later. He confessed to his father, a Macon FBI agent who ended up testifying at his son's trial.

The Georgia Bureau of Investigation reached out to John Cook in December 1995 because they were interested in speaking to his son. When he called his then-22-year-old son to tell him the GBI wanted to talk to him, he had no idea the younger man was considered a suspect.

"I said, 'Andy, the GBI is looking for you concerning the Lake Juliette homicide. Do you know anything about it?"' John Cook testified at his son's trial in March 1998. "He said, 'Daddy, I can't tell you. You're one of them. ... You're a cop."'

Eventually, Andrew Cook told his father that he knew about the slayings, that he was there and that he knew who shot the couple, John Cook recalled.

"I just felt like the world was crashing in on me. But I felt maybe he was there and just saw what happened," he said. "I then asked, 'Did you shoot them?'

"After a pause on the phone, he said, 'Yes."'

As a law enforcement officer, John Cook said he was forced to call his supervisor and contacted the Monroe County sheriff.

At the trial, as he walked away from the stand, the distraught father mouthed "I'm sorry" to the victims' families who were sitting on the front row of the courtroom. Several members of both families acknowledged his apology.

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Arias Challenged On Pedophilia Claim

Accused murderer Jodi Arias was challenged today by phone records, text message records, and her own diary entries that appeared to contradict her claim that she caught her ex-boyfriend, Travis Alexander, looking at pictures of naked boys.

Arias had said during her testimony that one afternoon in January 2008, she walked in on Alexander masturbating to pictures of naked boys. She said she fled from the home, threw up, drove around aimlessly, and ignored numerous phone calls from Alexander because she was so upset at what she had seen.

The claim was central to the defense's accusation that Alexander was a "sexual deviant" who grew angry and abusive toward Arias in the months after the incident, culminating in a violent confrontation in June that left Alexander dead.

Arias claimed she killed him in self-defense. She could face the death penalty if convicted of murder.

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

Today, prosecutor Juan Martinez, who has been aggressive in questioning witnesses throughout the trial, volleyed questions at her about the claim of pedophilia, asking her to explain why her and Alexander's cell phone records showed five calls back and forth between the pair throughout the day she allegedly fled in horror. Some of the calls were often initiated Arias, according to phone records.

Jodi Arias Doesn't Remember Stabbing Ex-Boyfriend Watch Video

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She and Alexander also exchanged text messages throughout the afternoon and evening at a time when Arias claims the pedophilia incident occurred. In those messages they discuss logistics of exchanging one another's cars that night. Alexander sends her text messages about the car from a church social event he attended that night that she never mentioned during her testimony.

Arias stuck by her claim that she saw Alexander masturbating to the pictures, and her voice remained steady under increasingly-loud questioning by Martinez.

But Martinez also sparred with Arias on the stand over minor issues, such as when he asked Arias detailed questions about the timing and order of events from that day and Arias said she could not remember them.

"It seems you have problems with your memory. Is this a longstanding thing? Since you started testifying?" Martinez asked.

"No it goes back farther than that. I don't know even know if I'd call it a problem," Arias said.

"How far back does it go? You don't want to call them problems, are they issues? Can we call them issues? When did you start having them?" he asked in rapid succession. "You say you have memory problems, that it depends on the circumstance. Give me the factors that influence that."

"Usually when men like you or Travis are screaming at me," Arias shot back from the stand. "It affects my brain, it makes my brain scramble."

"You're saying it's Mr. Martinez's fault?" Martinez asked, referring to himself in the third person.

"Objection your honor," Arias' attorney finally shouted. "This is a stunt!"

Timeline of the Jodi Arias Trial

Martinez dwelled at one point about a journal entry where Arias wrote that she missed the Mormon baptism of her friend Lonnie because she was having kinky sex with Alexander. He drew attention to prior testimony that she and Alexander used Tootsie Pops and Pop Rocks candy as sexual props.

"You're trying to get across (in the diary entry) that this involved a sexual liaison with Mr. Alexander right?" he asked. "And you're talking about Tootsie Pops and Pop Rocks?"

"That happened also that night," Arias said.

"You were there, enjoying it, the Tootsie Pops and Pop Rocks?" he asked again, prompting a smirk from Arias.

"I enjoyed his attention," Arias said.

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Tobacco giant wants to help you quit smoking

British American Tobacco aims to turn electronic cigarettes into medicines in the UK. It's a welcome move, but leaves a bitter taste in the mouth

BACK in the 1950s, when the dangers of smoking were becoming clear and the tobacco industry was panicked, cigarette-makers came up with a wheeze: safer smokes. Filter-tipped, low-tar and "light" cigarettes were the result.

In reality, those cigarettes were not safer at all. Smokers inhaled more deeply or smoked more. And the industry knew it. Internal documents later revealed that they cynically promoted safer cigarettes to discourage people from quitting.

Given this history of smoke and mirrors, you could be forgiven for being suspicious when a tobacco company announces that it is investing in a "reduced risk" cigarette. In December, British American Tobacco (BAT) bought a company called CN Creative, which makes "electronic cigarettes". It is now planning to ask the UK authorities to recognise one of its products as a smoking-cessation medicine.

History repeating? Probably not. You could argue that aiming to profit from curing an addiction that you helped cause in the first place is pretty cynical. But credit where it is due: BAT and other tobacco companies now openly admit that smoking is a serious health risk. There is mounting evidence that e-cigarettes are safer than smoking and really can help addicts cut down or quit. They seem especially useful for hard-core smokers who have failed to quit or who don't even want to try (see "E-cigarettes may soon be sold as life-saving medicine").

There are still unanswered scientific questions, including how e-cigarettes compare with existing medicines such as nicotine patches. That will form a big part of the debate on whether to license them as a medicine.

Long-term safety is also open to question, as is whether they will serve as a "gateway" product attracting new people to smoking, and if their use in public places will renormalise smoking at a time when it is increasingly frowned upon.

But again, the evidence is pointing in the right direction. Tellingly, the anti-tobacco group Action on Smoking and Health has given a qualified backing to e-cigarettes for harm reduction. ASH sensibly points out that e-cigarettes are clearly safer than inhaling tobacco smoke, and says there is little evidence that they will attract non-smokers or make smoking acceptable again. If so, there is little reason to worry about unintended consequences.

Don't hold your breath, though. A similar argument has been made for "snus", a form of oral tobacco mainly used in Sweden. There is evidence that it can help smokers quit and that it is safer than smoking. Sweden has the lowest rates of smoking and lung cancer in Europe, which is often attributed to the use of snus. By some estimates, if Sweden's snus habit was replicated across the European Union it would prevent 92,000 lung cancer deaths a year (Scandinavian Journal of Public Health, vol 37, p 481). And yet it remains illegal everywhere in the EU but Sweden, condemned as a carcinogen and a potential gateway to smoking. The lesson? Harm reduction is a tough sell.

It may be distasteful to watch a tobacco company spearhead a campaign for cigarette harm reduction. But action is sorely needed. If the evidence stacks up, they should be given the benefit of the doubt – for now.

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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Taiwan's ex-VP to meet China's Xi Jinping

TAIPEI: Taiwan's former vice president Lien Chan will meet China's Communist Party chief Xi Jinping in Beijing next week in the highest-level cross-straits meeting since Xi took office, it was announced on Thursday.

Lien, leading a delegation of some 30 politicians and business leaders on a four-day trip, will leave on Sunday and meet Xi the following day at the latter's invitation, said Kuo Su-chun, a spokeswoman for Lien.

"The meeting is significant as it will be the highest-level between the two sides since Xi assumed the leadership" of the party, Kuo said.

"They have known each other for a long time and they will discuss any topic of interest."

Xi is also due to take over as president in March in China's highly choreographed, once-in-a-decade leadership change.

Taiwan and China split in 1949 after a civil war but Beijing still claims the island as part of its territory awaiting reunification.

Lien became the first leader of the nationalist Kuomintang (KMT) party to visit China in 56 years when he met President Hu Jintao in 2005 to formally end hostilities with the communists.

Ties with China have improved markedly since the KMT's Ma Ying-jeou became Taiwan's president in 2008 on a Beijing-friendly platform. He was re-elected in 2012 for a final four-year term.

- AFP/al

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Pistorius case investigator accused of attempted murder

STORY HIGHLIGHTS

• NEW: A branch of South Africa's ruling party says Oscar Pistorius is getting special treatment


• A decision in the bail hearing could come as soon as Thursday


• Charges against investigator stem from 2009 incident, spokesman says


• Botha and other officers fired at a minibus they were pursuing, he says

(CNN) -- The sensational case of Oscar Pistorius took a new turn Thursday when police said the lead investigator is facing seven counts of attempted murder stemming from an incident four years ago.

That investigator, Hilton Botha, and several other police officers apparently fired at a minibus they were chasing in late 2009, spokesman Neville Malila told CNN affiliate eNCA.

The officers were allegedly drunk at the time, the spokesman said.

They were arrested on seven counts of attempted murder -- one for each occupant in the minibus, the spokesman said.

They were also charged with using firearms under the influence of alcohol, and all of them appeared in court.

The charges were provisionally withdrawn, but the Director of Public Prosecution reinstated them Wednesday and plans to move ahead on the charges later this year, the spokesman said.

The revelation comes as final arguments are set to begin in the bail hearing of the Olympian charged with premeditated murder in the killing of his girlfriend, model Reeva Steenkamp, in the early hours of Valentine's Day. A ruling in the hearing could come as soon as Thursday.

Pistorius has said he thought he was shooting at an intruder.

Pistorius' girlfriend dies on Valentine's Day

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Photos: 'Blade Runner' Oscar Pistorius

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But Botha told the court Wednesday that Pistorius, 26, wasn't acting in self-defense when he shot through the door of a toilet room in the bathroom of his home and killed Steenkamp.

Botha said he believes Pistorius knew Steenkamp was on the other side of the door. He didn't explain why investigators think that but suggested Pistorius was specifically aiming to hit the toilet where Steenkamp had gone.

But he also said investigators have found no evidence that is inconsistent with Pistorius' story.

Would he run?

In a statement Thursday, Pistorius' family said he is an international icon, which makes it highly unlikely that he'd be a flight risk if granted bail.

The family posted the statement on OscarPistorius.com and said it would use the site to disseminate information about the case.

Botha told Magistrate Desmond Nair that investigators believe Pistorius is violent and might flee if released from jail.

He described two police encounters with Pistorius, one in which Botha said the track star asked someone else to take the blame when a gun went off at a Johannesburg restaurant.

Police said the second incident took place at a racetrack, where Pistorius allegedly threatened to assault someone.

Authorities said they also have responded to previous domestic incidents at Pistorius' home but have not elaborated.

In a statement read by his attorney Tuesday, Pistorius said he and Steenkamp were deeply in love and that he was "mortified" over her death.

Special treatment?

The women's branch of South Africa's ruling party issued a statement asking why Pistorius was being detained in a holding cell at the Brooklyn Police Station -- and not at Central Prison or Newlock, where other defendants awaiting trial are kept.

"If there is some special circumstance that permits this, authorities must share this with the public as they are setting a bad precedent," the statement from the African National Congress Women's League said. "All should be treated equally before the law no matter your standing in society."

The group said Pistorius is getting special treatment, adding that his family can visit him even outside visiting hours -- unlike families of other inmates.

Pistorius' lawyers requested Brooklyn last week so they could have access to their client over the weekend. The state did not object.

Bail hearing

Prosecutors spent much of the hearing Wednesday focused on the bathroom of Pistorius' Pretoria home, where authorities say the track star shot Steenkamp three times, in the hip, elbow and ear.

Bullet trajectories show that Pistorius had to turn left and fire at an angle to aim at the toilet, Botha testified. Had he fired head-on into the door, he would have missed her, Botha said.

Defense attorney Barry Roux disputed that, saying the evidence does not show there was an effort to aim at the toilet.

Prosecutors are trying to prove Pistorius intentionally fired on Steenkamp, 29, in a premeditated attempt to kill her. Pistorius and his lawyers argue he mistook her for an intruder and killed her accidentally.

Pistorius said in his statement Tuesday that he believes Steenkamp went into the bathroom when he got up to close the balcony door in his bedroom in the early hours of February 14.

Hearing noises and gripped with fear that someone had broken into his home, Pistorius said he grabbed his gun, yelled for the intruder to leave and shot through the toilet-room door before realizing the person inside might have been Steenkamp.

Roux said Wednesday that the defense team believes Steenkamp locked the door when she heard Pistorius yelling for the intruder to leave. He also said Steenkamp's bladder was empty, suggesting she had gone to the bathroom as Pistorius claimed.

Botha agreed with the defense contention that, other than the bullet wounds, her body showed no sign of an assault or efforts to defend herself.

But prosecutors and Pistorius' defense battled over allegations that testosterone and needles were found at the home, as well as the quality of the police investigation.

Did investigators make errors?

Amid speculation by outsiders to the case that steroids or other drugs could have somehow played a role in the shooting, Botha testified that investigators found two boxes of testosterone and needles at Pistorius' home.

Under questioning by Roux, however, Botha said he hadn't read the full name of the substance -- which Roux said was an herbal remedy called testoconpasupium coenzyme -- when investigators took the materials into evidence.

The Mayo Clinic website says coenzyme is produced by the human body and is necessary for the basic functioning of cells. Coenzyme can be taken in supplement form to boost levels of it in the body.

A quick Internet search on the full name of the substance yielded no results.

Roux said the defense forensics team found a bullet in the toilet that police had missed and noted police had failed to find out who owned ammunition found at the home or photograph it.

Roux questioned police arguments that a witness heard sounds of an argument before the shooting. The witness, Roux said, lives 600 meters (more than a third of a mile) from Pistorius' home. Prosecutor Gerrie Nel countered that the witness lives 300 meters away.

Defense tactics

The tactics used by Pistorius' defense team caught the attention of U.S. defense attorney Alan Dershowitz.

"The thing that gives me some level of confidence that he may well be innocent is ... his lawyer did something that no reasonable lawyer would ever do unless he was absolutely certain of his client's innocence -- put his story in an affidavit," Dershowitz said.

"Because if there's anything in that affidavit that is contradicted by one single bit of forensic evidence, the case is over."

Defense attorneys are trying to overcome South African law, which makes it difficult for defendants accused of premeditated murder to get out on bail. The law requires evidence of "exceptional circumstances" to justify release.

The judge upgraded the charge against Pistorius to premeditated murder Tuesday, saying he could not rule out the possibility that the track star planned Steenkamp's death. But Nair said he would consider downgrading the charge later.

In his statement Tuesday, Pistorius said he would not try to flee or influence any witnesses if he is allowed out on bail, and he said his release wouldn't be a danger to public order.

Still, Steenkamp's half-brother Adam doesn't see Pistorius getting out.

"Under the circumstances, I think it would be rather strange if someone who quite clearly did something like this were to get bail," he said. "It wouldn't make sense to me, but I don't know whether that would be right or wrong."

Steenkamp's family mourns

In the midst of the drama in the courtroom, Steenkamp's family is still coming to terms with her tragic death.

Her cousin Kim Martin called her exceptional.

"From a young age there was something magical about her. She had this kind, nurturing soul. ... She continuously gave me advice for life. ... There was something really, really special about Reeva."

Adam Steenkamp said it's going to take some time for things to sink in, just a week after her death.

"We are all holding up very well considering the circumstances," he said. "We're doing OK."

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Sequestration could mean across-the-board pain

(CBS News) WASHINGTON - The entire economy is headed for trouble in just eight days -- when massive across-the-board cuts in the federal budget are scheduled to kick in automatically. The cuts were designed to be so deep and harmful, that they would force the president and Congress to find a better way. But they haven't. Just for example, there would be $46 billion cut from the Defense Department and benefit cuts for 4.7 million long-term unemployed.

The FBI says the budget cuts would require all employees, including special agents, to be furloughed for up to 14 days.

Referring to the FBI's top managers, Jan Fedarcyk, the former head of the New York field office of the agency, said: "I'm sure they are most worried about, 'What does this mean in the national security arena?' That's probably at the top of the list, a discussion about maintaining our counter-terrorism operations."

Watch CBS News correspondent David Martin's report on the impact the sequester cuts could have on those who work for the Department of Defense:

Most of the cuts would not take effect immediately on March 1 -- they would be phased in slowly over several months. And they could be avoided if Congress and the president could agree to a deal. But if they can't, the cuts will be painful.

Thousands of security screeners at the nation's airports would also be furloughed. Wait times at the busiest airports could increase by up to an hour.

Boehner, WH trade blame for sequester

Dickerson: Obama has stronger hand in sequester fight
Will sequestration really be that bad?

About 70,000 children would be dropped from Head Start.

About 600,000 women and young children would be cut from a major nutrition program.

Millions of the nation's long-term unemployed would lose an average of more than $400 in benefits.

On the health front, the FDA says furloughs would result in 2,100 fewer inspections of food plants, increasing the risk of food-borne illness. And medical research could be cut by $1.6 billion, slowing progress in the fight against disease, including cancer and Alzheimer's.

Medicare, Medicaid and Social Security would largely be spared. But critics of the whole process say that is a fundamental flaw because entitlement programs are a major driver of the national debt.

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Arias Leaves Stand After Describing Killing, Her Lies

Jodi Arias stepped down from the witness stand today after mounting an emotional effort to save herself from death row, insisting to the Arizona jury that an explosive fight with ex-boyfriend Travis Alexander led to his death, and that her lies about killing him masked deep regret and plans to commit suicide.

Arias, 32, will now face what is expected to be a withering cross-examination beginning Thursday from prosecutor Juan Martinez, who has been aggressive to many witnesses throughout the trial and who is expected to go after Arias' claim that she was forced to kill Alexander or be killed herself.

She is charged with murder for her ex-boyfriend's death and could face the death penalty if convicted.

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

The day's dramatic testimony started with Arias describing the beginning of the fight on June 4, 2008 when she and Alexander were taking nude photos in his shower and she claims she accidentally dropped his new camera, causing Alexander to lose his temper. Enraged, he picked her up and body slammed her onto the tile floor, screaming at her, she told the jury.

Arias said she ran to his closet to get away from him, but could hear Alexander's footsteps coming after her down the hall. She grabbed a gun from his shelf and tried to keep running, but Alexander came after her, she said.

"I pointed it at him with both of my hands. I thought that would stop him, but he just kept running. He got like a linebacker. He got low and grabbed my waist, and as he was lunging at me the gun went off. I didn't mean to shoot. I didn't even think I was holding the trigger," she said.

"But he lunged at me and we fell really hard toward the tile wall, so at this point I didn't even know if he had been shot. I didn't see anything different. We were struggling, wrestling, he's a wrestler.

"So he's grabbing at my clothes and I got up, and he's screaming angry, and after I broke away from him. He said 'f***ing kill you bitch,'" she testified.

Asked by her lawyer whether she was convinced Alexander intended to kill her, Arias answered, "For sure. He'd almost killed me once before and now he's saying he was going to." Arias had earlier testified that Alexander had once choked her.

Timeline of the Jodi Arias Trial

Arias on Ex-Boyfriend's Death: 'I Don't Remember' Watch Video

Jodi Arias Describes Violent Sex Before Shooting Watch Video

Jodi Arias Testifies Ex Assaulted Her, Broke Her Fingers Watch Video

But Arias' story of the death struggle ended there as she told the court that she has no memory of stabbing or slashing Alexander whose body was later found with 27 stab wounds, a slit throat and two bullets in his head. She said she only remembered standing in the bathroom, dropping the knife on the tile floor, realizing the "horror" of what had happened, and screaming.

"I have no memory of stabbing him," she said. "There's a huge gap. I don't know if I blacked out or what, but there's a huge gap. The most clear memory I have after that point is driving in the desert."

Arias said that she decided in the desert not to admit to killing Alexander, a decision that would last for two years as Arias lied to friends, family, investigators and reporters about what really happened in Alexander's bathroom.

During that time she initially claimed she got lost that night while driving to a friend's house and never went to Alexander's home in Mesa,Ariz. She later changed her story and said two masked people, a man and a woman, burst into the home and killed Alexander and threatened to kill her family if she told anyone what happened.

She eventually confessed to killing her ex-boyfriend, but insisted it was self defense.

"The main reason (for lying) is because I was very ashamed of what happened. It's not something I ever imagined doing. It's not the kind of person I was. It was just shameful," she said. "I was also very scared of what might happen. I didn't want my family to know that I had done that, and I just couldn't bring myself to say that I did that."

"From day one there was a part of me that always wanted to (tell the truth) but didn't dare do that. I would rather have gone to my grave than admit I had done something like that," she said.

Arias said that she continued to lie because she figured she would never get caught; she was planning to kill herself before trial.

"I was concerned with how it would affect my family. I wanted to die. I was going to definitely kill myself," she said. "That was my plan. You can purchase different things in jail and I bought a bunch of Advil... and took it all in the next few days so it was in my system. They have razors for shaving, so I got one and took it apart one night with intentions to slit my wrists."

Arias said she balked at slitting her wrists after accidentally cutting herself, but that she still planned to commit suicide sometime in the future. When she told news reporters that "no jury would convict her," she claims she said it believing that she would be dead before they'd have a chance to put her on trial, Arias testified.

Arias said support from the public and her family eventually led her to change her mind.

"My family remained very supportive, and told me 'it doesn't matter what happens, we love you anyway.' I realized even if I told the truth they would still be there and wouldn't walk away," she testified.

"By the time spring, 2010, rolled around, I confessed. I basically told everyone what I could remember of the day and that the intruder story was all BS pretty much."

She said that her testimony today, a third version of events, was the truth.

Arias was arrested a month after Alexander's death, and prosecutors have argued that her behavior during those weeks showed a lack of remorse for the killing and an attempt to get away with murder.

Arias said today that after she killed Alexander and drove away from his Mesa, Ariz., home in a panic, it dawned on her that police would soon be looking for Alexander's killer, and she decided that she would pretend the bloody confrontation had never happened.

"I knew that it was really bad, that my life was probably done now. I wished it was just a nightmare I could wake up from, but I knew I had messed up pretty badly and the inevitable was going to be something I could not really run from," she testified.

"I didn't want anyone to know that that had happened or that I did it, so I started taking steps in the aftermath to cover it up. I did a whole bunch of things to try to make it seem like I was never there," she said.

Read More..

Today on New Scientist: 19 February 2013

Doctors would tax sugary drinks to combat obesity

Hiking the price of fizzy drinks would cut consumption and so help fight obesity, urges the British Academy of Medical Royal Colleges

Space station's dark matter hunter coy about findings

Researchers on the Alpha Magnetic Spectrometer, which sits above the International Space Station, have collected their first results - but won't reveal them for two weeks

Huge telescopes could spy alien oxygen

Hunting for oxygen in the atmospheres of distant exoplanets is a tough job, but a new wave of giant telescopes should be up to the task

Evolution's detectives: Closing in on missing links

Technology is taking the guesswork out of finding evolution's turning points, from the first fish with legs to our own recent forebears, says Jeff Hecht

Moody Mercury shows its hidden colours

False-colour pictures let us see the chemical and physical landscape of the normally beige planet closest to the sun

LHC shuts down to prepare for peak energy in 2015

Over the next two years, engineers will be giving the Large Hadron Collider the makeover it needs to reach its maximum design energy

Insert real news events into your mobile game

From meteor airbursts to footballing fracas, mobile games could soon be brimming with news events that lend them more currency

3D-printing pen turns doodles into sculptures

The 3Doodle, which launched on Kickstarter today, lets users draw 3D structures in the air which solidify almost instantly

We need to rethink how we name exoplanets

Fed up with dull names for exoplanets, Alan Stern and his company Uwingu have asked the public for help. Will it be so long 2M 0746+20b, hello Obama?

A shocking cure: Plug in for the ultimate recharge

An electrical cure for ageing attracted the ire of the medical establishment. But could the jazz-age inventor have stumbled upon a genuine therapy?

Biofuel rush is wiping out unique American grasslands

Planting more crops to meet the biofuel demand is destroying grasslands and pastures in the central US, threatening wildlife

Read More..

Pope advised to limit air travel: report

VATICAN CITY: Pope Benedict XVI is nearly blind in one eye and was advised by his doctor to limit air travel because of his high blood pressure, the website Vatican Insider reported on Wednesday.

The report also said the 85-year-old pontiff often has problems sleeping and has fallen out of bed several times in recent years on foreign trips, making him tired in public appearances.

The report was based on indiscretions from papal aides that Vatican affairs specialist Marco Tosatti said he had promised to keep secret until the end of the pontificate on February 28.

"The picture is of a progressive deterioration of his health and his energy -- a context that fully justifies the difficult decision that the pope has taken," Tosatti wrote after the pope said he would step down due to old age.

The report cited the pope's doctor Patrizio Polisca saying two years ago that Benedict's blood pressure was having "major jumps" and insisting that he spend "as little time as possible in a plane because of the dangers".

Tosatti added that Benedict had been expressly advised not to make the transatlantic flight to Rio de Janeiro for World Youth Day later this year.

In his report, Tosatti also said the pope could "almost no longer see" out of his left eye and therefore had to be helped up and down steps.

The report said Benedict even began using a walking stick to get around his own residence last year because his left hip and knee were hurting.

The Vatican last week revealed the pope had hit his head and bled during a trip to Mexico last year and underwent surgery three months ago to replace the batteries in a pacemaker he was fitted with while he was still a cardinal.

- AFP/al

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Prosecutors dub Pistorius a flight risk, mull more charges

Photos: 'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

'Blade Runner' Oscar Pistorius

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STORY HIGHLIGHTS

• Bail hearing resumes in South Africa


• Prosecutors are asking that bail be denied


• Oscar Pistorius paints a detailed picture of his version of his girlfriend's death


• Prosecutors dispute Pistorius' version, say he meant to kill her

Pretoria, South Africa (CNN) -- Prosecutors called Olympian Oscar Pistorius a flight risk and requested that he be denied bail as the second day of the hearing got underway Wednesday.

Pistorius is charged with premeditated murder in the shooting death of his girlfriend.

Police Officer Hilton Botha took the stand and said Pistorius had offshore accounts and a house in Italy, and that if he left, it would be difficult to get him back.

The athlete sat with his head bowed.

Prosecutors also said they may file more charges. Police found bullets in a safe inside the house and plan to charge Pistorius with possession of unlicensed ammunition.

The charge of premeditation makes it more difficult for Pistorius' attorneys to argue he should be released pending trial. To win bail, the defense must argue that "exceptional circumstances" exist that would justify Pistorius' release.

Prosecutors have said they would ask for bail to be denied in the Valentine's Day death of Reeva Steenkamp.

Tuesday's court session ended with no decision on bail for Pistorius, 26. Prosecutors said they needed time to study the affidavits read in court before deciding how to proceed.

In a statement read by his lawyer, Pistorius said he would not try to flee or influence any witnesses if he is allowed out on bail, and he argued his release wouldn't be a danger to public order.

During Tuesday's hearing, Magistrate Desmond Nair upgraded the charge against Pistorius to premeditated murder, saying he could not rule out the possibility that the track star planned Steenkamp's death. But Nair said he will consider downgrading the charge later.

Pistorius' affidavit in alleged murder of girlfriend

A tragic mistake?

While prosecutors and defense lawyers agree Pistorius shot Steenkamp, the track star denied intentionally killing her.

"I fail to understand how I could be charged with murder, let alone premeditated murder because I had no intention to kill my girlfriend," Pistorius said in his statement.

"We were deeply in love and couldn't be happier," he said. "I loved her and I know she felt the same way."

Pistorius' girlfriend dies on Valentine's Day

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In his statement, Pistorius said Steenkamp came to his home February 13 for a quiet dinner. They wrapped up the night with a bit of television in bed for him, some yoga for her. She had brought him a Valentine's Day present to open the next day.

After the couple had gone to bed, he said he got up in the early hours of February 14 to close the balcony door in his bedroom when he heard a sound in the bathroom.

Pistorius said he'd been a victim of violence and burglary in the past, and realized with terror that contractors who worked at the house had left ladders outside.

Fearing someone had entered the home through the open bathroom window, Pistorius grabbed his 9mm pistol from under the bed, moved in the dark on the stumps of his amputated legs and yelled at what he thought was the intruder to get out.

"I fired shots at the toilet door and shouted to Reeva to phone the police. She did not respond and I moved backwards out of the bathroom, keeping my eye on the bathroom entrance," Pistorius said in his statement.

"Everything was pitch-dark in the bedroom and I was still too scared to switch on a light."

"When I reached the bed, I realized that Reeva was not in bed. That is when it dawned on me that it could have been Reeva who was in the toilet. I returned to the bathroom calling her name," he said.

He said he threw open the balcony door and screamed for help, put on his prosthetic legs and tried to kick in the door to the separate room inside the bathroom containing the toilet. Then, he said, he picked up a cricket bat, smashing panels out of the door before finding a key and unlocking it.

"Reeva was slumped over but alive," he said.

Pistorius said he called for help and was told to take her to the hospital himself.

He carried her downstairs and tried to help her, but she died.

A premeditated murder?

Prosecutors, however, painted a different picture.

They rejected Pistorius' claim that he mistook her for a burglar, saying it would make no sense for an intruder to hide behind a locked bathroom door.

Instead, they say Pistorius armed himself, attached his prosthetic legs and walked 7 meters (23 feet) to shoot Steenkamp through a bathroom door after a heated argument.

Defense attorney Barry Roux questioned the state's argument, asking how prosecutors would know Pistorius had put on his prosthetic legs and walked to the bathroom before shooting his girlfriend.

Police were alerted to the shooting by neighbors, and residents had "heard things earlier," police spokeswoman Denise Beukes said.

Authorities said there had been "previous incidents" at the home, including "allegations of a domestic nature," but did not provide details.

Detectives are investigating the blood-stained cricket bat found in the home, Johannesburg's City Press newspaper reported. They are trying to determine whether it was used to attack Steenkamp, if she used the bat in self-defense, or if Pistorius used it to try to break down the bathroom door, the newspaper said.

Case rivets fans and friends alike

The case of the global sports hero known as the "Blade Runner" has riveted stunned fans around the world.

As he walked into court in a blue shirt, gray suit and tie, frenzied photographers snapped away, prompting the judge to demand they stop.

The scene was a far cry from the packed stadiums that erupted in applause whenever the double-amputee competed against men with legs.

Social media reaction to the case came down against the sports star, but was still noticeably mixed on CNN's Facebook page.

"There's no amount of tears that will save you," said Anthonia Nneka Nwabueze. "Pistorius must face the Law for brutally killing an innocent girl - Reeva."

"My favorite athlete but what he did is grave and must be punished," Carlos Alvarez Ochoa said.

But another person who posted called for patience.

"(N)one of us were in the house when his girlfriend was murdered, let's hold off on casting stones at Oscar Pistorius," said Adrian van Liere Since. "Just like anyone else, he deserves a just trial, and in my eyes remains innocent until proven guilty."

Coming to his defense were two acquaintances.

"I've never seen him show an angry side. I've never seen him lose his temper," Vanessa Haywood, a model and longtime friend, told CNN. "He's an incredibly kind and gentle human being."

Another endorsement came from a former girlfriend.

"I would just like to say, I have dated Oscar on off for 5 YEARS," Jenna Edkins said on Twitter. "NOT ONCE has he EVER lifted a finger to me, made me fear for my life."

Robyn Curnow and Kim Norgaard reported from South Africa; Ed Payne reported and wrote from Atlanta. CNN's Nkepile Mabuse also contributed to this report.

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