Arias Recounts Each Moment of Stabbing, Slashing

Accused murderer Jodi Arias was forced to recount today each detail of how she killed her ex-boyfriend, Travis Alexander, including re-enacting how he allegedly tackled her when she shot him, leaving her crying in her hands on the witness stand.

During hours of dramatic cross-examination by prosecutor Juan Martinez, Arias bawled as he asked her about stabbing, slashing and shooting Alexander on June 4, 2008.

"You would acknowledge that Mr. Alexander was stabbed, and that the stabbing was with the knife, and it was after the shooting according to you, right?" Martinez said in rapid succession.

"Yes, I don't remember," Arias said, covering her face with her hands.

"Do you acknowledge the stab wounds, and we can count them together, were to the back of the head and the torso?" Martinez said, flashing a photo of Alexander's bloodied body onto the courtroom projector. " Do you want to take a look at the photo?"

Arias, burying her face in her hands and shutting her eyes on the stand, mumbled, "No."

Alexander's sisters, seated in the front row of the gallery, also looked away, crying.

Arias, 32, is accused of killing Alexander on June 4, 2008 out of jealousy. He was stabbed 27 times, his throat was slashed and he was shot in the head twice.

Arias claims she killed in self-defense after Alexander had become increasingly violent with her. She could face the death penalty if convicted.

Martinez also forced Arias to demonstrate in court today how she claims Alexander lunged at her "like a linebacker," causing her to fire the gun at him. The pair argued over how exactly Alexander was positioned, and Martinez pushed her to explain what she meant.

"He lunges at me like a linebacker," Arias said.

"Like a linebacker, what does that mean?" Martinez asked.

Jodi Arias Under Attack in Third Day of Cross-Examination Watch Video

Jodi Arias, Prosecutor Butt Heads in Cross-Examination Watch Video

Jodi Arias Maintains She 'Felt Like a Prostitute' Watch Video

"He was low. It was almost like he dove," she said, and trying to explain it further, added, "He was like a linebacker is the only way I can describe it unless I get up to act it out which I'd rather not do."

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

Timeline of the Jodi Arias Trial

"Go ahead and do it," Martinez said. "Just stand. Go ahead."

Judge Sherry Stephens initially cleared the court as Arias demonstrated and then Martinez had her do it again after the jury and spectators were allowed back into the courtroom.

Standing and moving away from the witness box, Arias bent at the waist and spread out her arms and meekly made a slight lunging motion.

According to her testimony, Arias fired the gun as Alexander rushed at her, tackling her to the ground. She said she does not remember how she stabbed or slashed him.

It was a day of dramatics and anger as the prosecution pressed Arias on the details of the killing, with Martinez ending the afternoon of questioning by accusing Arias of lying throughout her direct testimony.

At one point Arias dissolved into tears, unable to answer pointed questions when shown a photo of Alexander's body lying crumpled in the bottom of the stall shower.

After a short pause, Martinez asked dryly, "Were you crying when you were shooting him?"

"I don't remember," Arias moaned.

"Were you crying when you stabbed him?" he said. "How about when you slashed his throat?"

"I don't remember, I don't know."

Martinez pressed on, "You're the one that did this right? And lied about all this right?"

"Yes."

"So then take a look at it," he barked.

Arias did not answer Martinez's question, crying into her hands instead. The judge, after a moment, called for the lunch recess to take a break from the testimony. Arias' attorney walked over and consoled her, telling her to "take a moment."

Until that moment, Arias had given vague answers to Martinez as he asked about the hours leading up to the murder. Arias, 32, has testified that she drove to Alexander's house on June 4, 2008, for a sexual liaison, that she had sex with Alexander and the pair took nude photos before an explosive confrontation ended with her killing him. She claims she doesn't remember stabbing Alexander, but insists it was in self-defense.

Martinez questioned her claims, asking exactly what they argued about and who encouraged whom to take the nude photos. He pointed out that Arias told Detective Esteban Flores of the Mesa police department that she had to convince Alexander to take the nude photos in the shower, but that she testified on the stand that Alexander had wanted them.

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Quantum skyfall puts Einstein's gravity to the test

DIVIDING a falling cloud of frozen atoms sounds like an exotic weather experiment. In fact, it's the latest way to probe whether tiny objects obey Einstein's theory of general relativity, our leading explanation for gravity.

General relativity is based on the equivalence principle, which says that in free fall, all objects fall at the same rate, whatever their mass, provided the only force at work is gravity. That has been proven for large objects: legend has it that Galileo did it first by dropping various balls from the Tower of Pisa. Whether equivalence holds at quantum scales, where gravity's effects are not well understood, isn't clear. Figuring it out could help create a quantum theory of gravity, one of the biggest goals of modern physics.

Creating a quantum equivalent of Galileo's test isn't easy. In 2010 a team led by Ernst Rasel of the University of Hannover in Germany monitored a quantum object in free fall, by tossing a Bose-Einstein condensate (BEC) – a cloud of chilled atoms that behaves as a single quantum object and so is both particle and wave – down a 110-metre tall tower. Now they have split and recombined the wave – all before the BEC, made of rubidium atoms, reached the bottom. This produces an interference pattern that records the path of the falling atoms and can be used to calculate their acceleration (Physical Review Letters, doi.org/km6). The next step is to do the same experiment on a different kind of atom, with a different mass, to see if the equivalence principle holds.

The BEC can only be split for 100 milliseconds in the tower before hitting the bottom, so to allow tiny differences between the atom types to emerge, the work must be repeated in space, where the waves can be split for longer. By showing that a matter-wave can be split and recombined while falling, Rasel's result is a "major step" towards the space version, says Charles Wang of the University of Aberdeen, UK.

This article appeared in print under the headline "Quantum skyfall tests Einstein's gravity"

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Yvonne Lim: Making time for love

SINGAPORE: Her eyes glistened with tears when Singapore actress Yvonne Lim spoke about her character Liu Xixi in the upcoming drama "Marry Me", during a recent media event.

In the show, Liu, a successful gynecologist, winds up getting dumped by her boyfriend of 20 years, after she spent too much time on her career and neglected their relationship.

Lim revealed that she became emotional as her character's painful experiences in "Marry Me" reminded her of own.

"I have all these experiences before."

"I spend so much of my time on my work that I end up spending very little time dealing with matters of the heart," said Lim, explaining that she once broke up with a guy over the same issue.

"I remember I was very emotional when I read the script."

"I know how this character feels, why she struggles with her feelings, and why she is in pain, but keeps it bottled up inside."

Lim expressed that Liu is a character many women can identify with, because what happens to her in the show is something that also occurs in real life.

"She is so dedicated to her work that she forgot about her love life and kind of took it for granted.

"I've seen that happen to my girl friends. I have seen that happen to other people. I've heard stories like that before."

"When things drag on for too long, it (the relationship) gets stagnant. That's when things happen," said Lim earnestly.

Still, Lim said she prefers to take her time to slowly get to know someone instead of rushing things, and said she believes in "letting nature take its course".

"You have to find the right partner who is willing to be with you.

"If it happens, it happens. If not, that's the way it is," said Lim with a smile.

"I don't think about it much, though there is still this part of me that hopes for a fairytale ending."

"Marry Me", which also stars Koh Ya Hui and Jesseca Liu, airs every Wednesday, Thursday and Friday, 8pm on Channel U.

-CNA/ha

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Urine sample app lets users detect diseases with iPhones

The Uchek app lets users take urine samples with their smartphones.

(Credit:
Uchek)

Ever thought a smartphone could detect what was in your urine? Well, now it can. A new iPhone app developed by MIT entrepreneur Myshkin Ingawale, unveiled at the TED conference this week lets people take urine samples with their mobile device.

Obviously, pee and electronics don't mix, so this app instead uses the smartphone's camera to determine what's in urine. Dubbed Uchek, the app involves the user peeing into a cup, putting a color-coded urinalysis strip into the cup, taking of photo of the results, and then letting the app work its magic.

Uchek can detect up to 25 diseases, such as diabetes, urinary tract infections, and pre-clampsia. It can also measure the levels of glucose, proteins, ketones, and more. According to Wired, 1,200 sample tests showed that the app was more accurate than humans interpreting the color-coded strips.

Ingawale's goal is to help people become more aware of what health issues they might have or track their existing conditions. Ideally, it would be extra information to give to a doctor.

"The idea is to get people closer to their own information," Ingawale said at the TED conference, according to Wired. "I want people to better understand what is going on with their bodies."

Uchek is currently working its way through Apple's approval process and Ingawale is also working on an
Android app, according to Wired. The app will cost 99 cents and users can buy a packet of strips and a color-coded user guide for $20.

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Why African Rhinos Are Facing a Crisis

The body count for African rhinos killed for their horns is approaching crisis proportions, according to the latest figures released by the International Union for Conservation of Nature (IUCN).

To National Geographic reporter Peter Gwin, the dire numbers—a rhinoceros slain every 11 minutes since the beginning of 2013—don't come as a surprise. "The killing will continue as long as criminal gangs know they can expect high profits for selling horns to Asian buyers," said Gwin, who wrote about the violent and illegal trade in rhino horn in the March 2012 issue of the magazine.

The recent surge in poaching has been fueled by a thriving market in Vietnam and China for rhino horn, used as a traditional medicine believed to cure everything from hangovers to cancer. Since 2011, at least 1,700 rhinos, or 7 percent of the total population, have been killed and their horns hacked off, according to the IUCN. More than two-thirds of the casualties occurred in South Africa, home to 73 percent of the world's wild rhinos. In Africa there are currently 5,055 black rhinos, listed as critically endangered by the IUCN, and 20,405 white rhinos. (From our blog: "South African Rhino Poaching Hits New High.")

Trying to snuff out poaching by itself won't work, said Gwin. The South African government is fighting a losing battle on the ground to gangs using helicopters, dart guns, high-powered weapons—and lots of money. (National Geographic pictures: The bloody poaching battle over rhino horn [contains graphic images].)

"Every year they get tougher on poaching, but rhino killings continue to rise astronomically," said Gwin. "Somehow they have to address the demand side in a meaningful way. This means either shutting down the Asian markets for rhino horn, or controversially, finding a way to sustainably harvest rhino horns, control their legal sale, and meet what appears to be a huge demand. Either will be a formidable endeavor."

Hope and Hurdles

The signing in December of a memorandum of understanding between South Africa and Vietnam to deal with rhino poaching and other conservation issues raises hope for some concrete action. Observers say the next step is for the two governments to follow through with tangible crime-stopping efforts such as intelligence sharing and other collaboration. The highest hurdle to stopping criminal trade, though, is cultural, Gwin believes. "In Vietnam and China, a lot of people simply believe that as a traditional cure, rhino horn works." (Related: "Blood Ivory.")

The recent climb in rhino deaths threatens what had been a conservation success story. Since 1995, due to better law enforcement, monitoring, and other actions, the overall rhino numbers have steadily risen. The poaching epidemic, the IUCN warns, could dramatically slow and possibly reverse population gains.

The population growth is also being stymied by South Africa's private game farmers, who breed rhinos for sport hunting and tourism and for many years have helped rebuild rhino numbers. Many of them are getting out of the business due to the high costs of security and other risks associated with the poaching invasions.

Those who still have rhinos on their farms will often pay a veterinarian to cut the horns off—under government supervision—to dissuade poachers, but the process costs more than $2,000 and has to be repeated when the horns grow back every two years. Even then the farmers are stuck with horns that are illegal to sell—and which criminals seek to obtain.

Room for Debate

Rhino killings and the trade in their horns will be a major topic at a high-profile conference, the 16th meeting of the Conference of the Parties to the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which opens in Bangkok March 3. What won't surprise Gwin is if the issue of sustainably harvesting rhino horns from live animals comes up for discussion.

"It's an idea that seems to be gaining traction among some South African politicians and law enforcement circles," he said, noting that the international conservation community strongly opposes any talk of legalizing the trade of rhino horn, sustainably harvested or not. The bottom line for all parties in the discussion is clear, said Gwin: "The slaughter has to stop if rhinos are to survive."

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Arias Prosecutor Too Combative, Experts Say

He has barked, yelled, been sarcastic and demanded answers from accused murderer Jodi Arias this week.

And in doing so, prosecutor Juan Martinez and his aggressive antics may be turning off the jury he is hoping to convince that Arias killed her ex-boyfriend Travis Alexander in June 2008, experts told ABCNews.com today.

"Martinez is his own worst enemy," Mel McDonald, a prominent Phoenix defense attorney and former judge, told ABC News. "He takes it to the point where it's ad nauseam. You have difficulty recognizing when he's driving the point home because he's always angry and pushy and pacing around the courtroom. He loses the effectiveness, rather than build it up."

"He's like a rabid dog and believes you've got to go to everybody's throat," he said.

"If they convict her and give her death, they do it in spite of Juan, not because of him," McDonald added.

Martinez's needling style was on display again today as he pestered Arias to admit that she willingly participated in kinky sex with Alexander, though she previously testified that she only succumbed to his erotic fantasies to please him.

Arias, now 32, and Alexander, who was 27 at the time of his death, dated for a year and continued to sleep together for another year following their break-up.

Arias drove to his house in Mesa, Ariz., in June 2008, had sex with him, they took nude photos together and she killed him in his shower. She claims it was in self-defense. If convicted, Arias could face the death penalty.

Jodi Arias, Prosecutor Butt Heads in Cross-Examination Watch Video

Jodi Arias Maintains She 'Felt Like a Prostitute' Watch Video

Jodi Arias Admits to Killing Man, Lying to Police Watch Video

Martinez also attempted to point out inconsistencies in her story of the killing, bickering with her over details about her journey from Yreka, Calif., to Mesa, Ariz., including why she borrowed gas cans from an ex-boyfriend, when she allegedly took naps and got lost while driving, and why she spontaneously decided to visit Alexander at his home in Mesa for a sexual liaison.

"I want to know what you're talking about," Arias said to Martinez at one point.

"No, I'm asking you," he yelled.

Later, he bellowed, "Am I asking you if you're telling the truth?"

"I don't know," Arias said, firing back at him. "Are you?"

During three days of cross examining Arias this week, Martinez has spent hours going back and forth with the defendant over word choice, her memory, and her answers to his questions.

"Everyone who takes witness stand for defense is an enemy," McDonald said. "He prides himself on being able to work by rarely referring to his notes, but what he's giving up in that is that there's so much time he wastes on stupid comments. A lot of what I've heard is utterly objectionable."

Martinez's behavior has spurred frequent objections of "witness badgering" from Arias' attorney Kirk Nurmi, who at one point Tuesday stood up in court and appealed to the judge to have a conference with all of the attorneys before questioning continued. Judge Sherry Stephens at one point admonished Martinez and Arias for speaking over one another.

Andy Hill, a former spokesperson for the Phoenix police department, and Steven Pitt, a forensic psychiatrist who has testified as an expert witness at many trials in the Phoenix area, both said that despite his aggressive style, Martinez would likely succeed in obtaining a guilty verdict.

"When it comes to cross examination, one size does not fit all," said Pitt. "But if you set aside the incessant sparring, what the prosecutor I believe is effectively doing is pointing out the various inconsistencies in the defendant's version of events."

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Newly spotted comet to buzz Mars in 2014

Lisa Grossman, physical sciences reporter

A Martian sunset, as seen by NASA's Spirit rover in 2005.
(Image: Mars Exploration Rover Mission, Texas A&M, Cornell, JPL, NASA)

There's a new comet in town, and it is making a beeline for Mars. If projections of its orbit are correct, the icy visitor will buzz the Red Planet in October 2014.

Dubbed C/2013 A1, the comet was discovered on 3 January by prolific comet hunter Robert McNaught at Siding Spring Observatory in New South Wales, Australia. Colleagues at the Catalina Sky Survey in Arizona found images of the comet in their catalogue that date back to 8 December 2012, giving additional information about its movements.

These observations allowed astronomers to trace the comet's likely path around the sun. The calculated trajectory has C/2013 A1 crossing Mars' orbit on 19 October 2014, according to Australian blogger Ian Musgrave.

That doesn't necessarily mean a collision will occur. The best estimates right now have the comet passing a safe distance of 900,000 kilometres from the Martian surface. Asteroid 2012 DA14 got much closer to Earth last week, skimming by at a distance of 34,400 kilometres. But with so little data in hand, the calculations are not precise. It's possible the comet will miss Mars by as much as 36 million kilometres - or it could smack right into the planet. "An impact can't be ruled out at this stage," Musgrave wrote.

From Earth, we should be able to see the comet and Mars sitting side by side through small telescopes. And from Mars, the comet could be as spectacular as the expected "supercomet" ISON, which will come into view this year and could outshine the full moon.

Assuming the comet's orbit brings it close enough - but not too close - to Mars, the object should be visible either by rovers on the surface or the armada of Mars-orbiting satellites, which have a history of snapping spectacular shots of the Red Planet and its neighborhood.

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Safety concerns cloud S. Korea nuclear drive

GORI, South Korea: South Korea has big plans to become a major nuclear energy player, but they are unfolding at a time when the global industry is under intense scrutiny after the 2011 Fukushima disaster.

And its ambitions have not been helped by a series of domestic scandals and forced reactor shutdowns in 2012 that rattled public confidence and exposed a glaring lack of regulatory transparency.

Around US$400 billion is riding on South Korea's ability to sell its technology to potential clients as it aims to take on the United States, France and Russia and grab a 20 percent share of the nuclear energy market.

With around half of the world's 430 reactors due for retirement by 2030, according to the International Atomic Energy Agency, the next 15 years or so offer the prospect of a sales bonanza.

Spearheading South Korea's global drive is its ARP-1400 reactor. It won a $20 billion deal in 2009 to build four of them in the United Arab Emirates and it aims to export another 80, worth around US$400 billion, by 2030.

It is also planning a domestic energy expansion that would see it build 16 new reactors by 2030. South Korea currently operates 23 nuclear power reactors which meet more than 35 percent of the country's electricity needs.

"Our reactors are safe," Lee Young-Il insisted as he guided a group around an ARP-1400 nearing completion at the Gori nuclear power complex.

"We also have an excellent record of operating the reactors with a comparatively low annual rate of forced outage," said Lee, who heads the complex where South Korea's first commercial reactor came on line in 1978.

But the Fukushima disaster in Japan forced a number of countries to rethink their energy strategy, as public concern placed an even greater emphasis than before on reactor safety.

A survey commissioned by the Economics Ministry and published in November showed only 35 percent of South Koreans considered nuclear power to be safe, sharply down from 71 percent in January 2010.

"You are never free from worry as long as your country depends heavily on nuclear energy," Yangyi Won-Young, head of Nuclear-Free Korea, a coalition of civic groups, told AFP.

"Our nuclear power plants are vulnerable to natural disasters because of lax safety regulations which have been applied to construction, operation and parts," Yangyi said.

In the wake of the earthquake and tsunami-triggered meltdown at the Fukushima Daiichi nuclear plant in Japan, the state-run Korea Hydro and Nuclear Power Co (KHNP) launched a US$1.0 billion-dollar safety upgrade due to be completed by 2015.

The project involves building higher seawalls around the country's four nuclear power complexes, and equipping plants and reactors -- including the ARP-1400 -- with advanced watertight doors and ventilation systems, as well as new quake sensors.

But the upgrade coincided with a series of shutdowns and scandals in 2012 that triggered a warning from the International Energy Agency (IEA) in November about the need to rebuild public trust.

In May, five senior KHNP engineers were charged with trying to cover up a potentially dangerous power failure at the country's oldest Gori-1 reactor.

Later in the year, the government shut down two reactors at the Yeonggwang nuclear complex to replace components provided with fake quality certificates.

And a third reactor was taken offline at Yeonggwang when cracks were found on control rod tubes during maintenance work.

"Recent incidents at Korean nuclear facilities should serve as a timely reminder to the government that the nuclear regulatory authority must maintain an enhanced profile... and be able to take independent decisions," the IEA said in a report on South Korea's energy policies.

The South has been criticised in the past for a lack of transparency in the nuclear sector -- largely attributed to the regulatory bodies' mixed supervisory and promotional roles.

President Park Geun-Hye, who took office this week, looks set to further muddy the waters with her proposal for the nominally independent Nuclear Safety and Security Commission.

Park wants to affiliate the commission with a newly created super-ministry in charge of policies on science research, information communication technology and atomic energy development.

Scientists, environmentalists and a number of politicians -- including some from Park's ruling party -- say the move would undermine the watchdog's independence and weaken its safety management authority.

"The Republic of Korea is going to be the only country across the globe where regulators and basically developers or promoters might be working all together under the same roof," said Suh Kune-Yull, a nuclear engineering professor at Seoul National University.

"A conflict of interest is inevitable," Suh said.

- AFP/fl

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Yahoo admits new work policy contrary to industry view

Yahoo says work at the office, or work for someone else.

In response to the uproar caused by its recently announced telecommuting policy, Yahoo issued a brief statement this evening acknowledging that its work-at-home ban runs contrary to the tech industry as a whole.

"This isn't a broad industry view on working from home," Yahoo said in a statement published by The New York Times. "This is about what is right for Yahoo right now."

A spokesperson declined to elaborate, saying, "We don't discuss internal matters."

Yahoo's new policy, which requires employees to work in the company's offices, immediately ignited a firestorm of criticism. In a memo that leaked out over the weekend, Human Resources chief Jackie Reses informed the company's workforce that as of June, any existing work-from-home arrangements would no longer be honored.

"To become the absolute best place to work, communication and collaboration will be important, so we need to be working side-by-side," reads the memo.

The new policy was immediately criticized as standoffish in an industry where competition is intense for talented employees and especially ill advised at a company that has over the years battled declining morale among the rank and file. Some pointed out that CEO Marissa Mayer, a new mother who reportedly took only two weeks of maternity leave, should have more empathy for the needs of employees juggling time-conflicting commitments.

However, while working at home has become common at many tech companies, especially at ones eager to show off the benefits of collaborative Web-based software tools, some say the creative process suffers by not being able to share ideas in person.

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A History of Balloon Crashes

A hot-air balloon exploded in Egypt yesterday as it carried 19 people over ancient ruins near Luxor. The cause is believed to be a torn gas hose. In Egypt as in many other countries, balloon rides are a popular way to sightsee. (Read about unmanned flight in National Geographic magazine.)

The sport of hot-air ballooning dates to 1783, when a French balloon took to the skies with a sheep, a rooster, and a duck. Apparently, they landed safely. But throughout the history of the sport, there have been tragedies like the one in Egypt. (See pictures of personal-flight technology.)

1785: Pioneering balloonist Jean-Francois Pilatre de Rozier and pilot Pierre Romain died when their balloon caught fire, possibly from a stray spark, and crashed during an attempt to cross the English Channel. They were the first to die in a balloon crash.

1923: Five balloonists participating in the Gordon Bennett Cup, a multi-day race that dates to 1906, were killed when lightning struck their balloons.

1924: Meteorologist C. LeRoy Meisinger and U.S. Army balloonist James T. Neely died after a lightning strike. They had set off from Scott Field in Illinois during a storm to study air pressure. Popular Mechanics dubbed them "martyrs of science."

1995: Tragedy strikes the Gordon Bennett Cup again. Belarusian forces shot down one of three balloons that drifted into their airspace from Poland. The two Americans on board died. The other balloonists were detained and fined for entering Belarus without a visa. (Read about modern explorers who take to the skies.)

1989: Two hot air balloons collided during a sightseeing trip near Alice Springs, Australia. One balloon crashed to the ground killing all 13 people on board. The pilot of the other balloon was sentenced to a two-year prison term for "committing a dangerous act." Until today, this was considered the most deadly balloon accident.

2012: A balloon hit a power line and caught fire in New Zealand, killing all 11 on board. Investigators later determined that the pilot was not licensed to fly and had not taken  proper safety measures during the crash, like triggering the balloon's parachute and deflation system.

2012: A sightseeing balloon carrying 32 people crashed and caught fire during a thunderstorm in the Ljubljana Marshes in Slovenia. Six died; many other passengers were injured.

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