Obama to hold moment of silence for Newtown victims

Updated 2:15 a.m. EST

WASHINGTON President Obama plans to observe a moment of silence at the White House on Friday morning in honor of the victims of the Connecticut elementary school massacre.

The White House says the president will observe the moment of silence at 9:30 a.m. EST, about one week after the shooting at Sandy Hook Elementary School in Newtown, Conn., in which 20 children and six adults were killed at the school.

Mr. Obama has asked Vice President Biden to produce recommendations on new gun laws by next month and pledged to push new legislation without delay.

The White House said the president's observance of the shootings would take place in private, without press coverage.

Conn. Gov. Dan Malloy has asked people across the state to observe a moment of silence at 9:30 a.m. Friday.

Places of worship and buildings with bells have been asked to ring them 26 times, for the victims at the school. Officials and clergy in many other states have said they will also participate.

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Fiscal Cliff 'Plan B' Is Dead: Now What?

Dec 20, 2012 11:00pm

The defeat of his Plan B — Republicans pulled it when it became clear it would be voted down — is a big defeat for Speaker of the House John Boehner.  It demonstrates definitively that there is no fiscal cliff deal that can pass the House on Republican votes alone.

Boehner could not even muster the votes to pass something that would only allow tax rates on those making more than $1 million to go up.

Boehner’s Plan B ran into opposition from conservative and tea party groups -including Heritage Action, Freedom Works and the Club for Growth – but it became impossible to pass it after Senate Democrats vowed not to take up the bill and the president threatened to veto it.  Conservative Republicans saw no reason to vote for a bill conservative activists opposed – especially if it had no hopes of going anywhere anyway.

Plan B is dead.

Now what?

House Republicans say it is now up to the Senate to act.  Senate Democrats say it is now up to Boehner to reach an agreement with President Obama.

Each side is saying the other must move.

The bottom line:  The only plausible solution is for President Obama and Speaker Boehner to do what they have failed repeatedly to do:  come up with a truly bi-partisan deal.

The prospects look grimmer than ever. It will be interesting to see if the markets react.

SHOWS: This Week

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Fail-safe software could stop flash crashes

HIGH-FREQUENCY trading algorithms are seriously profitable. But they are also a serious problem, leading to mysterious "flash crashes" on the world's financial markets. So would emergency fail-safes of the kind used to prevent medical robots and nuclear reactors going haywire be any help?

Philip Bond, a computer scientist at the University of Bristol, UK, thinks so. At present, suspicious trading at an exchange can be stopped by a catch-all "market halt", but that's often too late: what is needed is a reliable way of sensing when wild stock-price variations suggest a build-up to a crash. At that point a smart circuit breaker could step in, Bond told a London meeting of the Centre for the Study of Financial Innovation on 11 December.

The idea is to avoid another debacle like the flash crash of 6 May 2010, when $10 trillion was briefly knocked off the Dow Jones Industrial Average after a trading firm's high-frequency algorithm went awry. Prices mostly recovered in a matter of minutes, but the turbulence caused slumps in stock prices around the globe.

High-speed traders have a distinct advantage over traditional investors, according to research by Andrei Kirilenko, chief economist at the US Commodity Trading Futures Commission, and his colleagues. Kirilenko presented the findings on 30 November at the National Bureau of Economic Research's Market Microstructure Meeting. This skewed playing field might increase market instability even more.

Because high-frequency trading algorithms (HFTs) can work at blistering speeds - a trade every 60 microseconds is common - a lot can happen before humans have a chance to intervene. This has left governments scrambling to come up with ways to regulate the practice. The European Parliament is considering legislation that could force traders to increase trading intervals to a "safer" half a second.

But Bond and his colleagues, who examined the risks of high-speed trading for the UK government, say that enforcing a delay is wrong-headed. Making algorithms wait half a second would stop them from reacting to breaking financial news and render them useless.

Instead, they propose using circuit-breaker algorithms that will trip when trading becomes erratic. Such software monitors systems like medical robots and nuclear reactors for potentially dangerous behaviour. "HFT circuit breakers need to be considered as very high reliability software engineered to work under stressed conditions and with multiple backups," he says.

A decision is needed fast. The proportion of high frequency trades has declined in the US in recent years as they have lost some of their initial edge, but they still account for a majority of trades. And the hardware needed to get in the game is becoming more accessible - a server running a high-speed system costs only $270,000, and prices will keep falling.

Any technical backstops will have to distinguish between algorithms gone haywire and simple bad decision-making, warns Fod Barnes, an economist with UK consultants Oxera. "The HFT system is a bit more complex than just engineering," he says. "Why should those who manage to write an algorithm that makes a series of very bad trades be protected from their own folly?"

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Park Geun-Hye: South Korea's president-elect with history

SEOUL: Park Geun-Hye's historic election victory that will see her installed as South Korea's first woman president of a still male-dominated nation caps a political career founded in privilege and personal tragedy.

One might assume Park's upbringing to be one of privilege, having lived in the presidential Blue House as a child and served there after her mother's murder as first lady to her later-assassinated father.

The Daegu native was just nine years old when her father, Park Chung-Hee, came to power in 1961 in a military coup that set the stage for 18 years of authoritarian rule.

Wednesday's presidential result was, in some ways, a referendum on the legacy of her father whose name still triggers polarised emotions in many South Koreans.

Admired for dragging the war-torn nation out of poverty, but reviled in some quarters for his repression of dissent, his shadow loomed large over Park's election campaign.

Thus, in an effort at reconciliation, Park publicly acknowledged the excesses of her father's regime and apologised to the families of its victims, a move aimed to shed the historic baggage that has plagued her campaign.

"In the shadows of South Korea's rapid growth, there was pain," she said at a news conference held at the Grand National Party's (GNP's) headquarters in Seoul, September 24 earlier this year.

"I deeply apologise to all those who were personally hurt and family members of victims of government abuse."

And like Korea itself, Park was as much the victim of her father's legacy as the beneficiary.

Park was attending graduate school in France in 1974 when she was called back to Seoul after the First Lady Yook Young-soo was killed by a pro-North Korean gunman aiming for her father.

The then 22-year-old took on the duties of her mother and played a sizeable role as the First Lady of Korea, one of which included persuading the 39th US President Jimmy Carter of the importance of the ongoing presence of US troops in Korea when he visited in 1979.

She left the presidential palace after her father was shot dead by his spy chief in 1979 and after a nine-year hiatus finally began her political career in 1998 as an assemblywoman in her home town for the conservative GNP.

The unmarried 60-year-old with no children -- a fact Park used to gain traction with voters tired of corruption scandals surrounding their first families.

"I have no family to take care of and no children to pass wealth to," she said in a televised address on the last day of campaigning, "You, the people, are my family and your happiness is the reason that I stay in politics."

Park's image of a female politician who promised a strong, maternal style of leadership that would steer the country through the challenges of global economic troubles is at odds with that pushed by her critics, an aloof aristocrat they call the "Ice Queen".

But even dissenters acknowledge her strengths as a campaigner that helped her party secure strong results in local and national polls between 2004 and 2006, emerging victorious in all 40 re-elections and by-elections, earning her another royal moniker as the "Queen of Elections".

And despite her privileged upbringing, Park has demonstrated a tough streak.

In 2006, an attacker at an election event where she was speaking slashed her face with a utility knife, leaving an 11-centimetre wound that needed 60 stitches.

Park had previously ran in 2008 to become the presidential nominee for GNP but eventually lost to the now outgoing president Lee Myung-bak by a narrow margin. Park had won the "party member's bid", but she lost the "national bid" which is a larger percentage of the total presidential bid.

Now Park will face numerous challenges when she begins her five-year term in February, not least dealing with a North Korea.

Even before Park won her party's presidential nomination in August, the state-run Korean Central News Agency hat attacked her candidacy, warning that "a dictator's bloodline cannot change away from its viciousness".

Park has signalled a break from outgoing President Lee Myung-Bak's hard line on Pyongyang, and even held out the possibility of an eventual summit with North Korea leader Kim Jong-Un.

But she will be restricted by conservative forces in her party as well as an international community intent on punishing North Korea for its long-range rocket launch last week.

While Park's election as South Korea's first woman president marks a major breakthrough in a male-dominated country, which ranked 108th out of 135 countries in terms of gender equality by the World Economic Forum -- one place below the United Arab Emirates and just above Kuwait.

However, not everyone sees her victory as paving the way for greater women's rights.

Kim Eun-Ju, executive director of the Centre for Korean Women and Politics, believes Park is a female political leader "only in biological terms".

"For the past 15 years, Park has shown little visible effort to help women in politics or anywhere else as a policymaker," Kim told AFP.

-AFP/CNA/fl

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Obama to GOP: 'Take the deal'

STORY HIGHLIGHTS

• White House threatens to veto Boehner's "plan B"


• President Obama suggests Republicans are fixated on besting him personally


• Speaker Boehner says the House will pass his fallback tax plan Thursday


• Without a deal, everyone's taxes go up in the new year

Washington (CNN) -- After progress earlier this week in fiscal cliff negotiations, President Barack Obama and House Speaker John Boehner butted heads Wednesday, setting the stage for a showdown as the deadline looms for an agreement.

The negotiations had focused on a $2 trillion package of new revenue, spending cuts and entitlement changes the two sides have shaped into a broad deficit reduction plan.

Boehner on Tuesday proposed a "plan B," which would extend Bush-era tax cuts on income of up to $1 million. He described it as a fallback option to prevent a sweeping tax hike while negotiations continue on a broader plan.

But the White House on Wednesday threatened to veto "plan B," saying it would bring only "minimal" changes in projected budget deficits.

Obama told reporters earlier in the day that Republicans were focused too much on besting him personally rather than thinking about what's best for the country.

"Take the deal," Obama said to Republicans, referring to the broader proposal, adding that it would "reduce the deficit more than any other deficit reduction package" and would represent an achievement.

"They should be proud of it," Obama said. "But they keep on finding ways to say 'no' as opposed to finding ways to say 'yes.' "

His comments at a White House news conference came less than two weeks before the end of the year, when the nation's taxpayers would face automatic tax increases and deep spending cuts if no agreement is reached.

Economists say that failure to reach agreement could spark another recession.

Boehner issued his own statement Wednesday, saying the president had yet to make a proposal offering a balance between increased revenue and spending cuts.

In a 52-second appearance before reporters, Boehner said the House will pass his fallback plan Thursday limiting tax increases to income above $1 million.

While the plan represents a concession from Boehner's original vow to oppose any tax-rate increase, it sets a higher threshold than the $400,000 sought by Obama.

Once the House passes his plan, the president can either persuade Senate Democrats to accept it or "be responsible for the largest tax increase in American history," Boehner said before walking off without answering shouted questions.

The Obama administration and congressional Democrats said Boehner changed course because he was unable to muster Republican support for the larger deal being negotiated with Obama.

At his news conference, Obama alluded to last Friday's Connecticut school shootings in calling on Republicans to put aside political brinksmanship. "If there's one thing we should have after this week, it should be perspective about what's important," he said.

"Right now, what the country needs is for us to compromise," he continued. He characterized as "puzzling" the GOP refusal to accept his compromise.

Asked why an agreement was proving so elusive after both sides had made concessions, Obama said it might be that "it is very hard for them to say 'yes' to me."

"At some point they've got to take me out of it," Obama said of Republicans, adding they should instead focus on "doing something good for the country."

Boehner responded by arguing that Obama's proposal was not evenly balanced, with more new revenue instead of the spending cuts and entitlement reforms Republicans seek.

The Boehner plan B would leave intact government spending cuts, including those related to defense, which are required under a budget deal reached last year to raise the federal debt ceiling. The threat of cuts was intended to motivate Congress to reach a deal.

Opinion: Art that calls the fiscal cliff's bluff

But Obama said Wednesday that Boehner's proposal "defies logic" because it raises tax rates on some Americans, which Republicans say they do not want, and contains no spending cuts, which Republicans say they do want.

He also criticized the measure as a benefit for wealthy Americans, who would have lower tax rates on income up to $1 million.

The White House and congressional Democrats say plan B has no chance of passing; Obama said that bringing it up only wastes time.

Senior administration officials said Obama and Boehner have not spoken to each other since Monday. GOP leaders planned to vote Thursday on Boehner's proposal, as well as Obama's long-standing proposal to return to higher tax rates of the 1990s on income above $250,000 for families.

Obama on Monday raised the threshold for the higher tax rates to $400,000.

Conservative allies publicly supported Boehner's plan Wednesday.

Anti-tax crusader Grover Norquist provided political cover for Republicans who have signed his pledge against tax increases, saying he could support plan B.

Obama and Democrats argue that increased revenue, including higher tax rates on the wealthy, must be part of broader deficit reduction plan.

Obama made the tax proposal a theme of his re-election campaign, arguing that it would prevent a tax increase for middle-class Americans.

Polls show support for the Obama plan, and some Republicans have called for acceding to the president on the tax issue in order to focus on cuts to spending and entitlement programs.

Budget experts: Fiscal cliff deal could disappoint

Boehner and Republicans initially opposed any rise in tax rates but agreed to raising revenue by eliminating some deductions and loopholes. The offer of a plan with higher rates for millionaires represented a further concession, but Obama and Democrats say it would not suffice.

Senate Majority Leader Harry Reid of Nevada said Boehner's plan appeared to be a result of pressure from tea party conservatives opposing a wider deal.

"It would be a shame if Republicans abandoned productive negotiations due to pressure from the tea party, as they have time and again," Reid said this week.

Boehner's spokesman, Michael Steel, shot back that the plan B proposal gave Democrats what they wanted -- higher tax rates on millionaires.

What happens if the payroll tax cut expires

Obama's latest offer has generated protests from the liberal base of the Democratic Party because it includes cuts in entitlement programs such as Social Security, Medicare and Medicaid.

Justin Ruben, executive director of MoveOn, which backed Obama's presidential campaigns, said its members would consider any benefit cuts "a betrayal that sells out working and middle-class families."

In particular, liberals cited concessions that Obama made Monday in his counteroffer, including a new inflation formula applied to benefits called chained CPI.

Obama offers fiscal cliff tax concession

Chained CPI includes assumptions on consumer habits in response to rising prices, such as seeking cheaper alternatives, and would result in smaller benefit increases in future years.

Statistics supplied by opponents say the change would mean Social Security recipients would get $6,000 less in benefits over the first 15 years of chained CPI.

But White House spokesman Jay Carney said Obama's CPI proposal "would protect vulnerable communities, including the very elderly, when it comes to Social Security recipients." He called the president's acceptance of the chained CPI a signal of his willingness to compromise.

CNN's Dan Lothian, Dana Bash, Deirdre Walsh and Brianna Keilar contributed to this report.

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Senate GOP proposes much smaller Sandy aid package

WASHINGTONSenate Republicans on Wednesday proposed a $24 billion emergency aid package for Superstorm Sandy victims, less than half of what Democrats hope to pass by Christmas.

The GOP alternative bill would provide more than enough money to pay for immediate recovery efforts through the spring.

Republicans complain that the $60.4 billion Democratic bill being debated in the Senate is larded with money for projects unrelated to damage from the late October storm, which battered the Atlantic coastline from North Carolina to Maine.

The Republican version does not include $13 billion Democrats want for projects to protect against future storms, including fortification of mass transit systems in the Northeast and protecting vulnerable seaside areas by building jetties against storm surges.

49 Photos

Sandy's devastation on Staten Island

Republicans said however worthy such projects may be, they are not urgently needed and should be considered by Congress in the usual appropriations process next year, not through emergency spending.

"We want to take care of urgent needs now," said Indiana Sen. Dan Coats, ranking Republican on the Senate Appropriations homeland security subcommittee, who put forward the bill. "We can look at other needs down the road when we have more time to look at them."

The GOP bill also scraps spending from the Democratic bill that is not directly related to Sandy damages, such as the $150 million for the National Oceanic and Atmospheric Administration for declared fisheries disasters in 2012 that could go to New England states, Alaska, New York and Mississippi.

The aid will help states rebuild public infrastructure like roads and tunnels and help thousands of people displaced from their homes. Sandy was the most costly natural disaster since Hurricane Katrina in 2005 and one of the worst storms ever in the Northeast.

More than $2 billion in federal funds has been spent on relief efforts so far for 11 states and the District of Columbia. The Federal Emergency Management Agency's disaster relief fund still has about $4.8 billion, and officials have said that is enough to pay for recovery efforts into early spring.

Earlier this month, Govs. Chris Christie, R-N.J., Andrew Cuomo, D-N.Y., and Dannel Malloy, D-Conn., argued in an op-ed that "in times of crisis no region, state or single American should have to stand alone or be left to fend for themselves," pointing to the "hundreds of thousands of homes and businesses damaged or destroyed, thousands still left homeless or displaced, tens of billions of dollars in economic loss" as evidence that "It's time for Congress to stand with us."

The governors, while recognizing that "our nation faces significant fiscal challenges," strive to separate the disaster-relief needs of their region from the ongoing "fiscal cliff" negotiations consuming Capitol Hill, arguing that Congress must "not allow this much-needed aid to fall in to the ideological divide."

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Obama Invokes Newtown on 'Cliff' Deal

Invoking the somber aftermath of the school massacre in Newtown, Conn., President Obama today appealed to congressional Republicans to embrace a standing "fair deal" on taxes and spending that would avert the fiscal cliff in 13 days.

"If there's one thing we should have after this week, it should be a sense of perspective about what's important," Obama said at a midday news conference.

"I would like to think that members of that [Republican] caucus would say to themselves, 'You know what? We disagree with the president on a whole bunch of things,'" he said. "'But right now what the country needs is for us to compromise.'"

House Speaker John Boehner's response: "Get serious."

Boehner announced at a 52-second news conference that the House will vote Thursday to approve a "plan B" to a broad White House deal -- and authorize simply extending current tax rates for people earning less than $1 million a year and little more.

"Then, the president will have a decision to make," the Ohio Republican said. "He can call on Senate Democrats to pass that bill or he could be responsible for the largest tax increase in American history."

Fiscal Cliff Negotiations: Trying to Make a Deal Watch Video

House Speaker John Boehner Proposes 'Plan B' on Taxes Watch Video

'Fiscal Cliff' Negotiations: Deal Might Be Within Reach Watch Video

Unless Congress acts by Dec. 31, every American will face higher income tax rates and government programs will get hit with deep automatic cuts starting in 2013.

Obama and Boehner have been inching closer to a deal on tax hikes and spending cuts to help reduce the deficit. But they have not yet had a breakthrough on a deal.

Obama's latest plan would raise $1.2 trillion in new tax revenue over 10 years, largely through higher tax rates on incomes above $400,000. He also proposes roughly $930 billion in spending cuts, including new limits on entitlement spending, such as slower annual cost-of-living increases for Social Security beneficiaries.

Boehner has agreed to $1 trillion in new tax revenue, with a tax rate hike for households earning over $1 million. He is seeking more than $1 trillion in spending cuts, with significant changes to Medicare and Social Security.

The president said today that he remains "optimistic" about reaching a broad compromise by Christmas because both sides are "pretty close," a sentiment that has been publicly shared by Boehner.

But the speaker's backup plan has, at least temporarily, stymied talks, with no reported contact between the sides since Monday.

"The speaker should return to the negotiating table with the president because if he does I firmly believe we can have an agreement before Christmas," said Sen. Chuck Schumer, D-N.Y., a White House ally.

Schumer said Obama and Boehner are "not that far apart" in the negotiations.

"If they were to come to an agreement by Friday, they could write this stuff over the Christmas break and then we'd have to come back before the New Year and pass it," Schumer said.

Obama said he is "open to conversations" and planned to reach out to congressional leaders over the next few days to try to nudge Republicans to accept a "fair deal."

"At some point, there's got to be, I think, a recognition on the part of my Republican friends that -- you know, take the deal," he told reporters.

"They keep on finding ways to say no, as opposed to finding ways to say yes," Obama added. "At some point, you know, they've got take me out of it and think about their voters and think about what's best for the country."

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Today on New Scientist: 18 December 2012

Violent polar storms help control the world's weather

Without the mini-hurricanes which form over the Arctic, the world could face massive weather disruption

Ancient city of Troy rebranded itself after war

Changing styles of pottery 3200 years ago show the Trojans were quick to align themselves with the region's new political power

Court ruling will clarify end-of-life decisions

Canada's supreme court will soon rule on whether doctors can stop treatment for "unconscious" patients, but determining awareness remains a thorny issue

Colourful claw of tiny ocean predator

See a prizewinning photo of the claw of a Phronima: a tiny marine predator whose size belies its ferocity

Gaming chair mimics a full-motion simulator

If you can't afford a full-motion flight or car simulator, here's a cheap way of creating some of the same effects

How an ancient Egyptian code unmasked a cannibal star

Has a papyrus from the time of the pharaohs exposed the ghoulish habits of the baleful Demon Star? Stephen Battersby investigates

Best videos of 2012: Bonobo genius makes stone tools

Watch a creative bonobo fashion tools to retrieve hidden food, at number 9 in our countdown of the year's best videos

Is the obesity epidemic caused by too much sugar?

In Fat Chance, endocrinologist Robert Lustig argues that insidious changes to our eating habits have caused disruptions to our endocrine systems

'The idea we live in a simulation isn't science fiction'

If the universe is just a Matrix-like simulation, how could we ever know? Physicist Silas Beane thinks he has the answer

Fungal frog killer hops into crayfish

Crayfish are vulnerable to the same chytrid fungus already killing frogs all over the world. The discovery provides a clue to how the disease spreads

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Philippine leader signs US$49b anti-poverty budget

MANILA: Philippine President Benigno Aquino on Wednesday signed into law a 2.005 trillion-peso ($49 billion) budget for 2013, vowing to use higher taxes on tobacco and alcohol to boost programmes to reduce poverty.

Education, health, agriculture and a cash-transfer scheme for the poor are the key priorities of the appropriations, which are 10.5 percent higher than the 2012 national budget, he said during the signing ceremony.

"We designed this budget as an instrument to give the common man the power to control and improve his life," Aquino said.

He thanked parliament for passing earlier this month a controversial rise in "sin taxes" on tobacco and alcohol products, which is expected to bring in over $800 million in extra revenues next year.

Budget Secretary Florencio Abad said the budget law includes 44.2 billion pesos for "conditional cash-transfer", up 12 percent from this year.

The three-year-old scheme gives up to $34 a month to the poorest families who meet certain criteria, like keeping their children in school and getting them as well as pregnant family members regularly to visit government health clinics.

Government officials say this gives their children a better opportunity to climb out of destitution.

More than 26 percent of the Philippines' population of about 100 million are deemed by the government to be living in poverty.

- AFP/al

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Sandy Hook students won't return to class until January

STORY HIGHLIGHTS

• 6-year-olds Jessica Rekos and James Mattioli are laid to rest


• School won't start for Sandy Hook children until January


• The NRA says it is "prepared to offer meaningful contributions"


• Investigators are so far unable to retrieve data from a computer taken from the gunman's home

Watch CNN's LIVE TV coverage of the Connecticut elementary school shooting as the story continues to unfold. People are sharing their concern and sadness about the Newtown school shooting. What are your thoughts? Share them with CNN iReport.

Newtown, Connecticut (CNN) -- Attendance was taken at schools across this devastated town on Tuesday as most students returned to the classroom for the first time since the deadly school shooting.

Not everyone was there.

Sandy Hook Elementary students won't resume classes until January, and victims of last week's massacre will never return.

Jessica Rekos and James Mattioli, both 6, were laid to rest Tuesday, while the families of Charlotte Bacon, 6, Daniel Barden, 7, and Victoria "Vicki" Soto, 27, held calling hours, or visitations, for their lost loved ones.

The teacher and children were among the 27 people killed when gunman Adam Lanza shot his mother and then went to the Sandy Hook, indiscriminately opening fire on staff and young students. The rampage reignited a debate about guns in America and sent shock waves through a nation that has seen mass killings before -- but not like this.

Connecticut school shooting

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"She had an answer for everything, she didn't miss a trick, and she outsmarted us every time. We called her our little CEO for the way she carefully thought out and planned everything," the family of Jessica said about their little girl, who loved horses and asked Santa for a cowgirl hat this year.

"We can not imagine our life without her," they said.

James liked to remind everyone that he was 6 and three-quarters. "He would often sing at the top of his lungs, and once asked, 'How old do I have to be to sing on a stage?'" his family wrote in an obituary.

In an online posting about his funeral, the Mattioli family called James "our beloved prince."

Across town, hearses could be seen traveling along roads with police escorts. Onlookers cried as they drove past.

Remembering the victims

For Sandy Hook students, no school until January

Unlike students at other schools who returned Tuesday, Sandy Hook students are not expected to go back until January.

Their school is a crime scene. The current plan is for them to resume classes next year at the former Chalk Hill Middle School, eight miles away in neighboring Monroe, Newtown Superintendent of Schools Janet Robinson said in a letter to parents.

"We need to tend to our teachers' and students' needs to feel comfortable after this trauma in this new place," she wrote.

Teachers may call parents "to invite you to visit Chalk Hill with your child this week to walk around and see the classroom and get familiar with this new Sandy Hook home."

At other schools, students went back to class with their sense of normalcy shattered. They were met by police, counselors and teachers, who all face a tremendous burden.

How do they explain to children what happened? How do they help make them feel safe?

David Schonfeld, a crisis counselor who gave a presentation to Newtown teachers about how to talk to students, said they have to meet children where they are.

"I told them that as far as I was concerned, there was really only one lesson plan that they needed to teach before they broke for the (holidays), and that was to make sure that the children knew that they were safe and that they cared about them and they were going to care for them," he said.

The teachers' union said classes would discuss the tragedy in an age-appropriate manner.

The gunman's computer and grim new details

Investigators have so far been unable to retrieve data from a computer taken from the home of the gunman, Adam Lanza, a law enforcement official said Tuesday.

It appears Lanza smashed the computer, extensively damaging the hard drive, the official said, adding that the FBI is assisting Connecticut State Police in trying to retrieve data from the computer.

Lanza's mother was shot four times in the head while she slept in her bed, said Connecticut Chief Medical Examiner H. Wayne Carver, also Tuesday.

Adam Lanza killed himself with a shot to the front of his head from a handgun, the medical examiner said.

Toxicology tests are under way to determine whether Adam Lanza had taken medication.

Growing debate over gun laws

What happened in Newtown should never happen again, advocates on both sides of the gun-control debate agree. But they're at staunch odds about how to turn words into reality.

The National Rifle Association commented Tuesday for the first time since the shooting, saying it was shocked and heartbroken by what happened. The group is planning to hold a news conference on Friday.

"Out of respect for the families, and as a matter of common decency, we have given time for mourning, prayer and a full investigation of the facts before commenting," it said. "The NRA is prepared to offer meaningful contributions to help make sure this never happens again."

The grassroots group Newtown United sent a delegation to Washington to meet with the Brady Campaign to Prevent Gun Violence as well as families from July's movie theater massacre in Aurora, Colorado.

The new group, which formed out of Newtown on Sunday, aims to create meaningful dialogue -- both locally and beyond -- about what may have led to the tragedy.

Until school shooting, 1 homicide in almost a decade

The debate is playing out not just in Newtown and Washington, but across the United States.

Two national polls conducted shortly after the Newtown massacre suggest that more Americans want stricter gun control.

In a Washington Post/ABC News poll, 54% of adults favor stricter gun control laws in the country, while 43% oppose.

And a new CBS News poll indicates that 57% of Americans back stricter gun laws, the highest percentage in a decade; 30% think gun laws should be kept as they are.

However, less than half of the respondents in the CBS poll -- 42% -- think stricter gun laws would have helped prevent what happened at Sandy Hook Elementary.

Sen. Joe Manchin, a conservative Democrat from West Virginia and a "proud gun owner," said he's now committed to "dialogue that would bring a total change" after the massacre in Newtown.

"Who would have ever thought, in America or anywhere in the world, that children would be slaughtered?" he asked. "It's changed me."

John Licata told CNN's iReport there needs to be better vetting before people buy guns, and assault weapons should be banned -- something Sen. Dianne Feinstein, D-California, says she'll propose once the new Congress convenes in January.

But some say the shooting illustrates the need for more armed guards -- and possibly armed teachers -- in schools.

Gun lobby has laid groundwork against any new laws

Texas Gov. Rick Perry said that if school districts decide that arming teachers is the best way to keep schools safe, so be it.

If Texas residents are duly background-checked, trained and have a concealed handgun license, "you should be able to carry your handgun anywhere in the state," Perry said, according to CNN affiliate WFAA.

Out of respect for the Newtown victims and their families, Dick's Sporting Goods has removed all guns from its store closest to Newtown, the company said.

Dick's, one of the largest sporting goods retailers in the world, also has suspended the sale of some semiautomatic rifles nationwide, the company said. It was unclear how long Dick's will keep its suspension of "modern sporting rifles."

Shedding new light on the gunman

While Carver, the chief medical examiner, said he was told that Adam Lanza had Asperger's syndrome, officials are working to determine whether that diagnosis was correct, and whether he may have had other diagnosable problems.

A former director of security for Newtown Public Schools shed new light Monday night on the gunman.

Richard Novia said Adam Lanza had Asperger's syndrome, based on documents and conversations with Lanza's mother.

Novia said that as part of his job, which he left in 2008, he would be informed of students who might pose problems to themselves or others.

He also said he received "intake information," which he said "is common for any students troubled or impaired or with disabilities." The idea was to keep track of and help students who may need it.

However, Novia said he never thought Lanza was a threat and certainly never thought he was capable of such violence.

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Russ Hanoman, a friend of Lanza's mother, previously told CNN that Lanza had Asperger's and that he was "very withdrawn emotionally."

CNN has not been able to independently confirm whether Lanza was diagnosed with autism or Asperger's, a higher-functioning form of autism. Both are developmental disorders, not mental illnesses.

Many experts say neither Asperger's syndrome nor autism can be blamed for the rampage.

"There is absolutely no evidence or any reliable research that suggests a linkage between autism and planned violence," the Autism Society said in a statement. "To imply or suggest that some linkage exists is wrong and is harmful to more than 1.5 million law-abiding, nonviolent and wonderful individuals who live with autism each day."

Dr. Max Wiznitzer, a pediatric neurologist and autism expert at Rainbow Babies and Children's Hospital in Cleveland, also said the gunman's actions can't be linked to autism spectrum disorders.

"Aggression and violence in the ASD population is reactive, not preplanned and deliberate," he said.

Gun control: 'This one feels different'

CNN's Susan Candiotti reported from Newtown; Dana Ford reported from Atlanta. CNN's Holly Yan, Greg Botelho, Sandra Endo, Josh Levs, Miriam Falco, Wayne Drash, Carol Cratty, Paul Steinhauser and David Williams contributed to this report.

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