Observe the science of a snowflake

Educate yourself about the tough time this fella went through on the way to see you.

(Credit:
Basilicofresco)

You might agree that the complex design in a snowflake appears almost comparable to a work of art. Do you know how that tiny frozen masterpiece comes to life, though? If you're like me, you may never have witnessed a complete representation of that journey from cloud to ground before.

The trip isn't as simple as you think.

According to an animated video by the American Chemical Society, clouds carry around one of the usual suspects of a snowflake -- a small piece of dust. When water vapor attaches to a dust grain, it creates an icy droplet ready to fall to the ground. While floating in mid-air, the droplet crystallizes, and a prism with six faces forms.

As the ice grows toward the edges of each side of the prism, six branches sprout out from the center and create the familiar shape of a snowflake -- since freezing water molecules chemically bond in a hexagonal fashion. From there, the snowflake develops its unique series of branches due to shifts in temperature before hitting the ground. Isn't science wonderful?

Watch the two-minute video to see the science of a snowflake in more detail; I'll be sure to play it at my next holiday gathering to geek things up a little bit. On second thought, such behavior might ensure I don't get invited back next year.

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Texas school district encourages armed teachers for protection

HARROLD, Texas -- There's at least one school that welcome firearms to class.

It believes nothing makes a school safer than teachers who are armed,

The Harrold Independent School District is one building with 103 students. It's 20 minutes away from the nearest sheriff's station. Superintendent David Thweatt created what he calls a "guardian plan" after the attack at Virginia Tech.

"These people that go in and do these horrible acts, they're evil. But they're not that crazy -- they always know where they are going to get resistance," Thweatt said.

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Teachers and administrators here carry concealed handguns. They won't say how many faculty members are armed. They get extra training, but the district would not give us details.

Some people are horrified when he starts talking about putting guns in schools with children, but Thweatt said it's important to be safe.

"Sure, but it's a pretty horrific thing that happened the other day." Thweatt said. "And quite a few people are not horrified. Quite a few people we have in our district, since we have a high-transfer district, people bring their students to us for that protection."

Texas law allows concealed weapons in schools with a district's permission. Harrold was the first district to do it. A similar proposal was vetoed by Michigan's governor Tuesday.

Thweatt says allowing the firearms into the school will dissuade anyone who wants to hurt the kids.

"That's the bottom line," he said.

Since the shootings in Connecticut, Superintendent Thweatt has gotten calls from districts around the state and as far away as Missouri from school administrators asking whether they might be able to implement similar plans.

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Can Cops Read Shooter's Sabotaged Computer?

Sandy Hook Elementary School shooter Adam Lanza may have tried to sabotage his own computer before going on a murderous rampage that claimed the lives of 20 children, but experienced investigators said today that law enforcement forensic experts could still recover critical evidence from the damaged drives.

Connecticut State Police Lt. Paul Vance revealed Monday that a computer crimes unit was working in conjunction with a forensics laboratory to "dissect" any evidence relevant to the case, but he declined to comment further on what type of evidence was involved and in what condition it was in. Later that day, law enforcement officials told ABC News that police recovered a badly damaged computer from Lanza's home that appeared to have been attacked by a hammer or screwdriver.

Sources said if they can still read the computer's hard drive, they hope to find critical clues that may help explain Lanza's motives in the killing.

Former FBI forensic experts told ABC News that in cases similar to this one, damage to the computer does not necessarily mean the computer files cannot be accessed.

"If he took a hammer to the outside, smashed the screen, dented the box, it's more than likely the hard drive is still intact," said Al Johnson, a retired FBI special agent who now works privately examining digital evidence and computer data. "And even if the hard drive itself is damaged, there are still steps that can be taken to recover everything."

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Brett Harrison, a former FBI computer forensics expert who now works with a D.C. consulting firm, said that authorities have a great deal of technology at their disposal to retrieve that data. How much is recovered, he said, will depend entirely on how much damage was done to the well-insulated "platters" -- discs lodged deep inside the machine -- where Lanza's every digital footstep was recorded.

It is likely, he said, that Lanza's computer has been moved to a "clean room" where, if the discs are intact, they could be removed and then carefully re-inserted in a fresh hard drive. If the calibrations are done correctly, investigators would still be able to unlock the clues on the discs.

If the discs aren't in perfect condition, Harrison said, "There is equipment they can use to read the data off a record even if a portion of it is damaged."

Johnson said it is tedious work done in a clean environment because the tolerances of the discs is so precise – even a particle of dust could destroy crucial evidence.

"We're talking about a tolerance of less than a human hair," said Johnson, who now does computer forensics for a South Carolina-based investigative firm.

Police have not said exactly what they expect to find on the computer's hard drive, but the former FBI experts said typically there could be record of visits to violent web sites, or to online stores that sell ammunition, or to email that might reveal if Lanza shared any hints of his plans with others.

"I'm not big on speculation," Harrison said, "but you're talking about potentially finding all the normal things that people do with their computer – Facebook pages, internet activity, email, you name it."

For now, the FBI is keeping mum on what kind of computer forensic help it could be offering in the case.

"At this time, in deference to the ongoing investigation being conducted by the CSP, the FBI is not releasing information regarding operational or forensic assistance provided in the Sandy Hook Elementary School shooting," an FBI spokesperson said.

Click Here for the Blotter Homepage.

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Egypt opposition protests against constitution

CAIRO (Reuters) - Opponents of Egyptian President Mohamed Mursi staged protests in Cairo on Tuesday against an Islamist-backed draft constitution that has divided Egypt but looks set to be approved in the second half of a referendum this weekend.

Several hundred protesters outside the presidential palace chanted "Revolution, revolution, for the sake of the constitution" and called on Mursi to "Leave, leave, you coward!". While the protest was noisy, numbers were down on previous demonstrations.

Mursi obtained a 57 percent "yes" vote for the constitution in the first part of the referendum last weekend, state media said, less than he had hoped for.

The opposition, which says the basic law is too Islamist, will be encouraged by the result but is unlikely to win the second part this Saturday, which is to be held in districts seen as even more sympathetic towards Mursi's Muslim Brotherhood.

The National Salvation Front opposition coalition said there were widespread voting violations last Saturday and called for protests to "bring down the invalid draft constitution".

The Ministry of Justice said it was appointing judges to investigate complaints of voting irregularities.

Opposition marchers converged on Tahrir Square, cradle of the revolution that toppled Hosni Mubarak almost two years ago, and Mursi's presidential palace, still ringed with tanks after earlier protests.

A protester at the presidential palace, Mohamed Adel, 30, said: "I have been camping here for weeks and will continue to do so until the constitution that divided the nation, and for which people died, gets scrapped."

Shortly after midnight, a few hundred protesters who had planned to spend the night in tents set up around the presidential palace were attacked with stones.

"Unknown people threw stones at us from behind the walls the army had built at all entrances to the palace, and some of the protesters were injured in the leg and head," protester Karim el-Shaer told Reuters.

The build-up to the first day of voting saw clashes between supporters and opponents of Mursi in which eight people died. Recent demonstrations in Cairo have been more peaceful, although rival factions clashed on Friday in Alexandria, Egypt's second city.

RESIGNATION

A judges' club urged its members on Tuesday not to supervise Saturday's vote. But the call is not binding and balloting is expected to go ahead.

If the constitution is passed, national elections can take place early next year, something many hope will help end the turmoil that has gripped Egypt since the overthrow of Hosni Mubarak almost two years ago.

But the closeness of the first day of voting and the low turnout suggest more difficulties ahead for Mursi as he seeks to rally support for difficult economic reforms.

"This percentage ... will strengthen the hand of the (opposition) National Salvation Front, and the leaders of this Front have declared they are going to continue this fight to discredit the constitution," said Mustapha Kamal Al-Sayyid, a professor of political science at Cairo University.

Mursi is likely to become more unpopular with the introduction of planned austerity measures, Sayyid told Reuters.

To tackle the budget deficit, the government needs to raise taxes and cut fuel subsidies. Uncertainty surrounding economic reform plans has already prompted the postponement of a $4.8 billion loan from the International Monetary Fund. The Egyptian pound has fallen to eight-year lows against the dollar.

Mursi and his backers say the constitution is needed to move Egypt's democratic transition forward. Opponents say it is too Islamist and ignores the rights of women and of minorities, including 10 percent of Egyptians who are Christian.

Demonstrations erupted when Mursi awarded himself extra powers on November 22 and then fast-tracked the constitution through an assembly dominated by his Islamist allies and boycotted by many liberals.

The referendum has had to be held over two days because many of the judges needed to oversee polling staged a boycott in protest. In order to pass, the constitution must be approved by more than 50 percent of those voting.

(Additional reporting by Tamim Elyan and Edmund Blair; Writing by Giles Elgood; Editing by Kevin Liffey)

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Japan's November trade deficit widens 37.9% on-year

TOKYO: Japan's trade deficit in November expanded 37.9 per cent on-year to $11.3 billion, a record for the month, official data showed Wednesday.

The trade shortfall came to 953.4 billion yen, marking the fifth straight month of deficit as it widened from a year-earlier deficit of 691.2 billion yen. Exports fell 4.1 per cent while imports edged up 0.8 per cent.

- AFP/fa

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Brain implants let paralyzed woman move robot arm

Jan Scheuermann can't use her limbs to feed herself, but she's pretty good at grabbing a chocolate bar with her robot arm.

She's become the first to demonstrate that people with a long history of quadriplegia can successfully manipulate a mind-controlled robot arm with seven axes of movement. Earlier experiments had shown that robot arms work with brain implants.

Scheuerman was struck by spinocerebellar degeneration in 1996. A study on the brain-computer interface (BCI) linking Scheuermann to her prosthetic was published online in this month's issue of medical journal The Lancet.

Training on the BCI allowed her to move an arm and manipulate objects for the first time in nine years, surprising researchers.

It took her less than a year to be able to seize a chocolate bar with the arm, after which she declared, "One small nibble for a woman, one giant bite for BCI." Check it out in the video below.

"This is a spectacular leap toward greater function and independence for people who are unable to move their own arms," senior investigator Andrew Schwartz of the University of Pittsburgh's Pitt School of Medicine said in a release.

"This technology, which interprets brain signals to guide a robot arm, has enormous potential that we are continuing to explore. Our study has shown us that it is technically feasible to restore ability; the participants have told us that BCI gives them hope for the future."

Scheuermann's brain was implanted with two quarter-inch square electrode grids. They have 96 tiny contact points for brain areas that control right arm and hand movement.

The electrodes pick up neurons firing to activate arm movement. Within a week of surgery, she could reach in and out, left and right, and up and down with her robot arm.

Her rapid progress has led researchers to estimate that similar robot arms could be available to far more patients in 5 to 10 years. The next step for the work will be to include feedback potential in the electrodes, so the brain can interpret sensations like grip strength from the arm.

Scheuermann will continue to test the device over the next two months.

"This is the ride of my life," she was quoted as saying. "This is the roller coaster. This is skydiving. It's just fabulous, and I'm enjoying every second of it."

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More details about Newtown school gunman emerge

NEWTOWN, Conn. -- Like a lot of people who interacted with Lanza, Dot Stansy said he was "just quiet"

Adam Lanza.

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AP Photo

"On one side, he did something unspeakable, but on the other, that's not how I remember him," Stansy said. "I remember him as the nice kid that, you know, I sat near to in class. We'd joked, he'd laugh, that kind of thing."

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"We were all hanging out outside of class afterwards one night, and he walked by and we were like, 'Hey, do you want to grab a drink with us?' And he said, 'No, I can't, I'm 17.'"

Lanza was also being home-schooled at the time.

He took seven college-level courses between the summers of 2008 and 2009, receiving several As in computer classes and also one in American history. His overall GPA was 3.26.

Dot Stasny remembers meeting Adam Lanza's mother.

"[She] introduced herself, said he was sick, asked where the classroom was, and when we walked in, she was getting his assignments from the teacher," Stansy said.

Nancy Lanza's friends, told CBS News' Scott Pelley on "60 Minutes" that she told them Adam had Asperger's syndrome and taking care of him was a full-time job.

Ryan Kraft

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CBS News

"I mean, I know he was on he was on medication and everything, but she home-schooled him at home cause he couldn't deal with the school classes sometimes," Louise said. "So she just home-schooled Adam at home. And that that was her life."

Ryan Kraft, who babysat for the Lanza's when Adam was just about 10 years old, got a glimpse of how difficult he could be.

"I received instructions from Nancy to always supervise Adam at all times and to never turn my back on him," Kraft said.

Adam Lanza's parent divorced in 2009. CBS News spoke to a mediator in that divorce, who said his parents seemed to love him and only wanted the best for him.

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Gunman's Computer Damaged, Drive Possibly Ruined

A computer at the Connecticut home where Newtown, Conn., school shooter Adam Lanza lived with his mother was badly damaged, perhaps smashed with a hammer, said police who hope the machine might still yield clues to the gunman's motive.

The computer's hard drive appeared to have been badly damaged with a hammer or screw driver, law enforcement authorities told ABC News, complicating efforts to exploit it for evidence.

Officials have "seized significant evidence at [Lanza's] residence," said Connecticut State Police spokesman Paul Vance, adding that the process of sifting through that much forensic evidence would be a lengthy and "painstaking process."

Authorities also told ABC News that the weapons used in Friday's rampage at Sandyhook Elementary School, which left dead 20 children and seven adults including Lanza's mother Nancy, were purchased by his mother between 2010 and 2012.

According to the Bureau of Alcohol Tobacco and Firearms, Lanza visited shooting ranges several times in recent years, and went at least one time with his mother.

The first funeral for a child killed in the massacre was held today in Fairfield, Conn., where mourners gathered to remember the too-short life of first-grader Noah Pozner.

Authorities also revealed this morning that two adult women shot during the rampage survived and their accounts will likely be integral to the investigation.

"Investigators will, in fact, speak with them when it's medically appropriate and they will shed a great deal of light on the facts and circumstances of this tragic investigation," Connecticut State Police Lt. Paul Vance said at a news conference today.

Both survivors are women and are now home from the hospital after being shot, police said. Officials had previously mentioned just one adult survivor. The women have not been identified and police did not give details on their injuries.

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Both adults, Vance said, were wounded in the "lower extremities," but did not indicate where in the building they were when they were injured.

Moving trucks were seen outside Sandy Hook Elementary School this morning, as school officials prepare to move furniture and supplies to a vacant school in neighboring Monroe.

Sandy Hook itself will remain a secure crime scene "indefinitely," said Vance.

Emily Friedman/ABC News, Handout

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Police say Adam Lanza, 20, forced his way into Sandy Hook Elementary School on Friday, spraying bullets on students and faculty. Lanza killed 20 children and six adults before turning the gun on himself.

Lanza also killed his mother Nancy Lanza at the home they shared before going to school.

"There are many, many witnesses that need to be interviewed," Vance said. "We will not stop until we have interviewed every last one of them."

Vance said the investigation could take weeks or months to complete. "It's not something done in 60 minutes like you see on T.V."

Some of the other key witnesses will be children who survived the shooting spree by playing dead, hiding in closets and bathrooms and being rescued by dedicated teachers.

"Any interviews with any children will be done with professionals...as appropriate," Vance said. "We'll handle that extremely delicately when the time arises."

CLICK HERE for a tribute to the shooting victims.

The first funerals for victims of the shooting are today, beginning with 6-year-olds Noah Pozner and Jack Pinto.

Officials said today that the Sandy Hook Elementary School, where the shooting took place, will be closed "indefinitely."

Both the school and the home where shootings took place are being held by police as crime scenes and Vance predicted authorities would spend "months" investigating the elementary school.

All Newtown schools are closed today to give residents more time to cope. Every school except for Sandy Hook is expected to re-open Tuesday.

The town of Monroe has offered to open to Sandy Hook students the Chalk Hill School, a former middle school that currently houses the town's EMS and recreational departments.

Officials in Monroe, less than 10 miles from Newtown, say the building could be ready for students by the end of the week, but have not yet set a date to resume classes.

Nearly 100 volunteers are working to ensure the building complies with fire and security regulations and are working to retorfit the school with bathroom facilities for young children.

"We're working to make the school safe and secure for students," said Monroe Police Department spokesman Lt. Brian H. McCauley.

The neighboring community's school is expected to be ready to accommodate students in the next few days, though an exact schedule has not yet been published.

While the families grieve, federal and state authorities are working around the clock to answer the question on so many minds: "Why?"

ABC News has learned that investigators have seized computers belonging to Adam Lanza from the home he shared with his mother. Three weapons were found at the school scene and a fourth was recovered from Lanza's car. Lanza had hundreds of rounds and used multiple high-capacity magazines when he went on the rampage, according to Connecticut State Police.

Vance said that every single electronic device, weapon and round will be thoroughly examined and investigated as well as every aspect of Lanza's life going "back to the date of birth."

ABC News has learned that both the shooter and his mother spent time at an area gun range; however it was not yet known whether they had shot there.

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Clinton gets accountability report on Benghazi attacks

WASHINGTON (Reuters) - Secretary of State Hillary Clinton on Monday received an official review of the September attack on a U.S. diplomatic mission in Benghazi, Libya, setting the stage for testimony on an incident that prompted a political furor and sharp questions about security at U.S. diplomatic facilities overseas.

The State Department said Clinton - who is convalescing after suffering a concussion last week - received the report from the Accountability Review Board formed to probe the attack which killed U.S. Ambassador Christopher Stevens and three other Americans.

"The ARB has completed its work. Its report has gone to the secretary this morning. She now has it," State Department spokeswoman Victoria Nuland said.

The committee has been meeting in private and State Department officials have declined to discuss almost all specifics of the Benghazi attack pending its reports.

The findings are expected to cover questions on whether enough attention was given to potential threats and how Washington responded to security requests from U.S. diplomats in Libya.

A determination that top State Department officials turned down those requests, as Republican congressional investigators allege, could refuel criticism of the officials - and possibly even end the careers of some of them.

Clinton had been expected to testify to Congress on December 20 on the report's results, but is under doctors' orders to remain at home this week.

Deputy Secretary William Burns and Deputy Secretary Thomas Nides will testify in her stead at Thursday's open hearings of the Senate and House foreign affairs committees, Nuland said.

Prior to that, the Accountability Review Board's two leaders - retired Ambassador Thomas Pickering and retired chairman of the U.S. Joint Chiefs of Staff Michael Mullen - will testify in closed door hearings of the two committees on Wednesday, she said.

POLITICAL FALLOUT

The political uproar over the September 11 Benghazi attack has already claimed one victim.

U.S. Ambassador to the United Nations Susan Rice, widely tipped as a front-runner to replace Clinton when she steps down as secretary of state early next year, last week withdrew her name from consideration, saying she wished to avoid a potentially disruptive Senate confirmation process.

Republican lawmakers had blasted Rice for televised comments she made in the aftermath of the attack in which she said preliminary information suggested the assault was the result of protests over an anti-Muslim video made in California rather than a premeditated strike.

Rice has said she was relying on talking points drawn up by U.S. intelligence officials.

Nuland said the final report could contain both classified and unclassified sections, and that only the latter would be made publicly available.

Central questions raised include why the ambassador was in such an unstable part of Libya on the anniversary of the September 11, 2001, attacks on New York and the Pentagon.

The five-person independent board usually includes retired ambassadors, a former CIA officer and a member of the private sector. It has the power to issue subpoenas, and members are required to have appropriate security clearances to review classified information.

Nuland said that Clinton - who intends to step down toward the end of January when President Barack Obama is sworn in for his second term - was "on the mend" following her concussion, which occurred when she fell as a result of dehydration due to a stomach virus.

She added that Clinton remained open to discussing the attack with lawmakers herself next month.

"She looks forward to continuing to engage with them in January and she will be open to whatever they consider appropriate in that regard," Nuland said. (Editing by Warren Strobel and Mohammad Zargham)

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Australia under fire for diverting foreign aid

SYDNEY: Aid groups Tuesday attacked Australia's plans to divert hundreds of millions of dollars in foreign aid to help pay for asylum-seekers already in the country, saying it was a blow for the world's poor.

Foreign Minister Bob Carr said up to A$375 million ($395 million) would be spent on basic subsistence for refugees waiting to have their claims heard in Australia. It will cover food, shelter and other essential items.

"It's absolutely fair," he told the Australian Broadcasting Corporation.

"The fact is the OECD guidelines provide that if you're spending money on refugees and potential refugees on your own soil, it's to be counted as if you were spending money on refugees or potential refugees in refugee camps around the world," Carr said.

But aid agencies criticised the decision which comes as Canberra battles to stem a rising flow of asylum-seekers, with more than 16,770 boatpeople arriving in Australia so far in 2012.

The Australian Council for International Development (ACFID) called the diversion "an appalling breach of trust between the government and the Australian public", saying it would strip money from the world's poorest people.

Executive director Marc Purcell said it was also out of step with undertakings Canberra made to the world as it sought support for significant positions in global leadership.

"On the eve of Australia taking its seat on the United Nations Security Council, now is the time to show leadership," he said.

World Vision Australia also condemned the move as "more than just an accounting trick".

"We know aid saves lives -- the number of children dying each year has nearly halved over the past two decades," said chief executive Tim Costello.

"If these funds are siphoned away from health programmes, it could literally mean the difference between life and death for some of the world's most vulnerable people, including those in our own region."

Carr said Australia's aid expenditure for fiscal 2012/13 would be a record A$5.2 billion.

But he would not say from which programmes the A$375 million would be drawn during the fiscal year ending June 30.

- AFP/fa

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