Former President Bush in ICU

Updated 6:40 p.m. ET

A "stubborn" fever that kept former President George H.W. Bush in a hospital over Christmas has gotten worse, and doctors have put him on a liquids-only diet, his spokesman said Wednesday, describing Bush's condition as guarded to CBS News.

Jim McGrath, Bush's spokesman in Houston, had said earlier in the day that the fever had gone away, but he later corrected himself.

"It's an elevated fever, so it's actually gone up in the last day or two," McGrath told The Associated Press. "It's a stubborn fever that won't go away."

"Following a series of setbacks including a persistent fever, President Bush was admitted to the intensive care unit at Methodist Hospital on Sunday where he remains in guarded condition," McGrath said in an emailed statement. "Doctors at Methodist continue to be cautiously optimistic about the current course of treatment. The President is alert and conversing with medical staff, and is surrounded by family."

Doctors at Methodist Hospital in Houston have run tests and are treating the fever with Tylenol, but they still haven't nailed down a cause, McGrath said. Doctors also have put Bush on a liquid diet, though McGrath could not say why.

The bronchitis-like cough that initially brought Bush to the hospital on Nov. 23 has improved, McGrath said. The 88-year-old is now coughing about once a day, he said.

Bush was visited on Christmas by his wife, Barbara, his son, Neil, and Neil's wife, Maria, and a grandson, McGrath said. Bush's daughter, Dorothy, will arrive Wednesday in Houston from Bethesda, Md. The 41st president has also been visited twice by his sons, George W. Bush, the 43rd president, and Jeb Bush, former governor of Florida.

Bush and his wife live in Houston during the winter and spend their summers at a home in Kennebunkport, Maine.

The former president was a naval aviator in World War II - at one point the youngest in the Navy - and was shot down over the Pacific. He achieved notoriety in retirement for skydiving on at least three of his birthdays since leaving the White House in 1992.

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Okla. Senator Could Prevent Gun Control Changes

If there's one person most likely to keep new gun-control measures from passing Congress swiftly, it's Sen. Tom Coburn.

Conservatives revere the Oklahoma Republican for his fiscal hawkishness and regular reports on government waste. But he's also a staunch gun-rights advocate, and he's shown a willingness to obstruct even popular legislation, something in the Senate that a single member can easily accomplish.

That mixture could make Coburn the biggest threat to quick passage of new gun-control laws in the aftermath of the Newtown, Conn., shooting that has prompted even pro-gun NRA-member lawmakers like Sen. Joe Manchin, D-W.Va., to endorse a new look at how access to the most powerful weapons can be limited.

Coburn's office did not respond to multiple requests to discuss the current push for gun legislation. But given his record, it's hard to imagine Coburn agreeing to a major, new proposal without some fuss.

The last time Congress considered a major gun law -- one with broad support -- Coburn held it up, proving that the details of gun control are sticky when a conservative senator raises unpopular objections, especially a senator who's joked that it's too bad he can't carry a gun on the Senate floor.

After the Virginia Tech massacre in 2007, Congress heard similar pleadings for new gun limits, some of them similarly to those being heard now. When it came to light that Seung-Hui Cho, the mentally disturbed 23-year-old who opened fire on campus, passed a background check despite mental-health records indicating he was a suicide threat, a push began to include such records in determining whether a person should be able to buy a gun.

Rep. Carolyn McCarthy, D-N.Y., a longtime gun-control advocate whose husband was killed in a mass shooting on the Long Island Rail Road in 1996, introduced a widely supported bill to do just that. The NRA backed her National Instant Check System Improvement Amendments Act of 2007.

But Coburn didn't. The senator blocked action on the bill, citing concerns over patient privacy, limited gun access for veterans, and the cost of updating the background-check system,

In blocking that bill, Coburn pointed to a government study noting that 140,000 veterans had been referred to the background-check registry since 1998 without their knowledge.

"I am certainly understanding of the fact that some veterans could be debilitated to the point that such cataloguing is necessary, but we should ensure this process does not entangle the vast majority of our combat veterans who simply seek to readjust to normal life at the conclusion of their tours. I am troubled by the prospect of veterans refusing necessary treatment and the benefits they are entitled to. As I'm sure you would agree we cannot allow any stigma to be associated with mental healthcare or treatment of Traumatic Brain Injury," Coburn wrote to acting Veterans Secretary Gordon Mansfield.

Coburn succeeded in changing the legislation, negotiating a set of tweaks that shaved $100 million over five years, made it easier for prohibited gun owners to restore their gun rights by petitioning the government, and notifying veterans that if they abdicated control of their finances they would be added to the gun database. The bill passed and President Bush signed it in January 2008.

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2013 Smart Guide: Hot computing for a cool billion

Read more: "2013 Smart Guide: 10 ideas that will shape the year"

It has been called science's X Factor: six mega-projects vying for two prizes, each worth a cool €1 billion.

In 2010, the European Commission put out a call for visionary computing initiatives comparable to the moon landing or the mapping of the human genome. Such ultra-ambitious projects would change the way we think about the world and ideally solve some of its problems, too.

Of 21 ideas submitted, six were shortlisted for further development. These include the Human Brain Project - an attempt to simulate the brain using a supercomputer - and a scheme to create a new generation of electronic devices based not on silicon but graphene.

The winners will be announced at the end of January. The prize money, from European countries and private firms as well as the European Union, will be spread over 10 years.

Our money is on FuturICT, a real-life SimCity on a global scale. It will give individuals, companies and governments real-time information about the planet, and run simulations to find the best strategies for dealing with issues such as climate change.

FuturICT was conceived after the 2008 financial crash drove home our lack of understanding about today's hyperconnected world. The civilisation simulator will be an open platform, accepting data on anything from social media and the stock exchange to climate models and political preferences. Stay tuned for the start of something big.

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

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NParks steps up checks to prevent falling trees during storms

SINGAPORE: The National Parks Board (NParks) has stepped up measures to ensure that fewer trees fall during storms.

In the last five years, an average of 300 trees fell a year in bad weather.

To ensure public safety, NParks has increased the number of checks on trees since the beginning of last year.

Checks on trees near busy roads are now made once every 12 months, up from once every 18 months.

For trees on non-busy roads, checks are conducted once every two years.

Oh Cheow Sheng, Director of Streetscape Division at National Parks Board, said: "We've stepped up checks on the trees along busy roads, and trimmed the crowns of trees. We've also removed trees that may be vulnerable to the impact of storms. As for trees with a heavier crown, we trim the crown to lighten its weight, so as to reduce the chances of the trees falling during heavy storms."

- CNA/de

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Top celebs

updated 9:20 AM EST, Thu December 20, 2012

CNN readers' favorites: Celebrity women

No. 10: Sandra Bullock

No. 9: Angelina Jolie

No. 8: Katy Perry

No. 7: Taylor Swift

No. 6: Sofia Vergara

No. 5: Carrie Underwood

No. 4: Jennifer Lawrence

No. 3: Jennifer Aniston

No. 2: Adele

No. 1: Catherine, Duchess of Cambridge

CNN readers' favorites: Celebrity men

No. 10: Justin Timberlake

No. 9: Jeremy Renner

No. 8: Brad Pitt

No. 7: Ryan Gosling

No. 6: Adam Levine

No. 5: Joseph Gordon-Levitt

No. 4: Ben Affleck

No. 3: Channing Tatum

No. 2: Johnny Depp

No. 1: Daniel Craig

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Obama cuts Hawaii trip short to address "fiscal cliff"

KAILUA, Hawaii President Barack Obama is cutting short his traditional Christmas holiday in Hawaii to return to Washington as lawmakers consider how to prevent the economy from going over the so-called fiscal cliff, the White House said Tuesday.

Obama will fly back to the nation's capital Wednesday night, just five days after arriving in Hawaii, White House officials said. In the past, the president's end-of-the-year holiday in his native state has stretched into the new year.

Congress is expected to return to Washington on Thursday. Automatic budget cuts and tax increases are set to begin in January. So far, the president and congressional Republicans have been unable to reach agreement on any alternatives.

Play Video

Seven days 'til the "fiscal cliff"

9 Photos

The Obamas in Hawaii

CBS News correspondent Nancy Cordes reported earlier Tuesday that the president will likely put pressure on Congress to pass a Democratic plan being drafted by Senate Majority Leader Harry Reid.

"There still have been no conversations between Democrats and Republicans Tuesday on how to avert the fiscal cliff," Cordes reported from Hawaii. "That's a sure sign that Reid is working on crafting legislation on his own, which he'd essentially dare Republicans in the House and Senate to pass just before the deadline."

Cordes notes that Reid's bill would likely extend the Bush-era tax cuts for households making less than $250,000 a year. It may also include enough short-term spending cuts to temporarily offset, for about six to eight months, the across-the-board spending cuts set to go into effect on January 1, 2013.

Lawmakers have expressed little but pessimism for the prospect of an agreement coming before Jan. 1. On Sunday, Sen. Kay Bailey Hutchison, R-Texas, said she expects any action in the waning days of the year to be "a patch because in four days we can't solve everything."

The Obamas were spending the holiday at a rented home near Honolulu. On Christmas Day, the president and first lady Michelle Obama visited with Marines to express thanks for their service.

"One of my favorite things is always coming to base on Christmas Day just to meet you and say thank you," the president said. He called being commander in chief his greatest honor as president.

Obama took photos with individual service members and their families.

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Winter Storms Spawn Tornadoes Across South

A nasty Christmastime storm system spawned blizzard conditions in some states and at least 15 reported tornadoes in the South, damaging homes, taking out power lines and dangerously snarling holiday travel.

Severe weather swept across the United States during the Christmas holiday, bringing tornadoes and intense thunderstorms to the Gulf Coast, while dumping heavy snow and freezing rain on the Southern Plains.

At least 15 tornadoes were reported today from Texas to Alabama, putting this storm system potentially on track to be one of the largest Christmas day tornado outbreaks on record.

One large tornado was reported in Mobile, Ala., where there are about 19,000 customers without power and 23,429 statewide, according to Alabama Power. Kerry Burns, a Mobile resident originally from Boston, said the storm "sounded like a freight train."

Some buildings in the area, including some churches and a local high school, were reportedly damaged. Ray Uballe, another Mobile resident, said his dad was shaken up.

"He was in his apartment," Uballe said. "He said it sounded like an airplane and then the door flung open and then there was just debris flying."

Douglas Mark Nix, president of the Infirmary Health System, said one of their Mobile hospitals lost power and sustained damage. There were no early reports of injuries to staff or patients.

"We are operating now on generator power," he said. "We do not have substantial damage but we do have a number of windows out and we have some ceiling tiles down, throughout the facility at the main hospital.

"We can run for at least two weeks but I saw power crews out all over the city so I fully expect power to be restored within the next day or so," Nix added.

Melinda Martinez/The Daily Town Talk/AP Photo

Winter Weather Causes Holiday Travel Problems Watch Video

At least eight states were issued blizzard warnings today, as the storms made highways dangerously slick heading into one of the busiest travel days of the year.

Oklahoma got about 7 inches of snow all over the state making for treacherous road conditions. ABC News affiliate KOCO-TV in Oklahoma City said the weather was being blamed for a 21-vehicle wreck on Interstate 40, but no one was seriously injured.

Ice accumulation in Arkansas bent trees and power lines, leaving at least 50,000 customers across the state without power. About 10 inches of snow fell on Fayetteville, Ark.

The storms, which first wreaked havoc on the West Coast before moving east, are being blamed for at least one death in Texas.

Investigators in the Houston area told ABC state KTRK-TV in Houston that a young man was trying to move a downed tree that was blocking the roadway when another one snapped and fell on top of him. He was later pronounced dead at a hopsital.

The last time a number of tornadoes hit the Gulf Coast area around Christmas Day was in 2009, when 22 tornadoes struck on Christmas Eve morning, National Weather Service spokesman Chris Vaccaro told ABC News over email.

The deadliest Christmastime tornado outbreak on record was Dec. 24 to 26, 1982, when 29 tornadoes in Oklahoma, Missouri, Arkansas, Tennessee and Mississippi killed three people and injured 32.

The last killer tornado around Christmas, Vaccaro said, was a Christmas Eve EF4 in Tennessee in 1988, which killed one person and injured seven. EF4 tornadoes can produce winds up to 200 mph.

No official word yet on the strength of the string of tornadoes reported today.

While some were preparing for a Christmas feast, others were hunkered down.

More than 180 flights nationwide were canceled by midday, according to the flight tracker FlightAware.com. More than half were canceled by American Airlines and its regional affiliate, American Eagle.

The storm system is expected to continue east into Georgia and the Carolinas Wednesday and could potentially spawn more tornadoes, according to the National Weather Service.

ABC News' Matt Gutman, Max Golembo and ABC News Radio contributed to this report.

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New Scientist 2012 holiday quiz

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THIS was the year we held our breath in almost unbearable anticipation while we waited to see whether physicists at the Large Hadron Collider would finally get a clear view of the Higgs boson, so tantalisingly hinted at last December. Going a bit blue, we held on through March when one of the LHC's detectors seemed to lose sight of the thing, before exhaling in a puff of almost-resolution in July, when researchers announced that the data added up to a fairly confident pretty-much-actual-discovery of the particle.

Early indications were that it might be a weird and wonderful variety of the Higgs, prompting a collective gasp of excitement. That was followed by a synchronised sigh of mild disappointment when later data implied that it was probably the most boring possible version after all, and not a strange entity pointing the way to new dimensions and the true nature of dark matter. Prepare yourself for another puff or two as the big story moves on next year.

This respirational rollercoaster might be running a bit too slowly to supply enough oxygen to the brain of a New Scientist reader, so we have taken care to provide more frequent oohs and aahs using less momentous revelations. See how many of the following unfundamental discoveries you can distinguish from the truth-free mimics that crowd parasitically around them.

1. Which of these anatomical incongruities of the animal kingdom did we describe on 14 July?

• a) A fish, found in a canal in Vietnam, that wears its genitals under its mouth
• b) A frog, found in a puddle in Peru, that has no spleen
• c) A lizard, found in a cave in Indonesia, that has four left feet
• d) A cat, found in a tree in northern England, that has eight extra teeth

2. "A sprout by any other name would taste as foul." So wrote William Shakespeare in his diary on 25 December 1598, setting off the centuries of slightly unjust ridicule experienced by this routinely over-cooked vegetable. But which forbiddingly named veg did we report on 7 July as having more health-giving power than the sprout, its active ingredient being trialled as a treatment for prostate cancer?

• a) Poison celery
• b) Murder beans
• c) Inconvenience potatoes
• d) Death carrots

3. Scientists often like to say they are opening a new window on things. Usually that is a metaphor, but on 10 November we reported on a more literal innovation in the fenestral realm. It was:

• a) A perspex peephole set in the nest of the fearsome Japanese giant hornet, to reveal its domestic habits
• b) A glass porthole implanted in the abdomen of a mouse, to reveal the process of tumour metastasis
• c) A crystal portal in the inner vessel of an experimental thorium reactor, to reveal its nuclear fires to the naked eye
• d) A small window high on the wall of a basement office in the Princeton physics department, to reveal a small patch of sky to postgraduate students who have not been outside for seven years

4. On 10 March we described a new material for violin strings, said to produce a brilliant and complex sound richer than that of catgut. What makes up these super strings?

• a) Mousegut
• b) Spider silk
• c) Braided carbon nanotubes
• d) An alloy of yttrium and ytterbium

5. While the peril of climate change looms inexorably larger, in this festive-for-some season we might take a minute to look on the bright side. On 17 March we reported on one benefit of global warming, which might make life better for some people for a while. It was:

• a) Receding Arctic sea ice will make it easier to lay undersea cables to boost internet speeds
• b) Increasing temperatures mean that Greenlanders can soon start making their own wine
• c) Rising sea levels could allow a string of new beach resorts to open in the impoverished country of Chad
• d) More acidic seawater will add a pleasant tang to the salt water taffy sweets made in Atlantic City

6. In Alaska's Glacier Bay national park, the brown bear in the photo (above, right) is doing something never before witnessed among bearkind, as we revealed on 10 March. Is it:

• a) Making a phonecall?
• b) Gnawing at a piece of whalebone to dislodge a rotten tooth?
• c) Scratching itself with a barnacle-covered stone tool?
• d) Cracking oysters on its jaw?

7. Men have much in common with fruit flies, as we revealed on 24 March. When the sexual advances of a male fruit fly are rejected, he may respond by:

• a) Whining
• b) Hitting the booze
• c) Jumping off a tall building
• d) Hovering around the choosy female long after all hope is lost

8. While great Higgsian things were happening at the LHC, scientists puzzled over a newly urgent question: what should we call the boson? Peter Higgs wasn't the only physicist to predict its existence, and some have suggested that the particle's name should also include those other theorists or perhaps reflect some other aspect of the particle. Which of the following is a real suggestion that we reported on 24 March?

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If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

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Syria peace envoy Brahimi meets opposition

DAMASCUS: International peace envoy Lakhdar Brahimi met Tuesday in Damascus with three opposition groups tolerated by the regime, a day after holding talks with President Bashar al-Assad, an AFP correspondent said.

Brahimi, the UN-Arab League's special envoy to Syria, arrived in the country on Sunday to launch a fresh bid to end the country's spiralling conflict, which in almost two years has killed more than 44,000 people.

He met mid-morning Tuesday with a delegation of six people led by Hassan Abdel Azim, head of the National Coordination Committee for Democratic Change (NCCDC), at his Damascus hotel, the correspondent said.

The NCCDC brings together several Arab nationalist, Kurdish, socialist and Marxist groups.

Key among Abdel Azim's companions in the meeting were Mohammed Abu Qassem of the Tadamun (Solidarity) party and Bassam Takieddin.

With close ties to Moscow, the NCCDC rejects all calls for foreign military intervention in Syria's conflict. It is not a part of the recently formed National Coalition, which is recognised by dozens of states and organisations as the legitimate representative of the Syrian people.

Brahimi had told reporters on Monday that he and Assad had "exchanged views on the many steps to be taken in the future".

He said the Syrian crisis was "always worrying", and expressed hope that "all parties are in favour of a solution that draws Syrian people together."

Assad described his meeting with Brahimi as "friendly and constructive," according to state television.

But the Local Coordination Committees, a grassroots network of anti-regime activists who organise anti-Assad demonstrations and document the conflict, blasted Brahimi and the international community for failing to stop the bloodshed in Syria.

"Brahimi's arrival in Damascus to discuss a new political initiative to solve the crisis caused by the regime... has not put a stop... to massacres," the LCC said in a statement.

"Regarding leaks about an initiative proposed by Brahimi, the LCC declares its rejection of any initiative that puts Syrians in a position where they are extorted and forced to choose between accepting unfair compromises, or the continuation of the regime's crimes against them," it added.

The statement repeated calls for "Assad and all political, military and security officials to leave power.

"Any plan that gives... this criminal regime impunity against a fair trial and accountability for their crimes is immediately rejected, as it threatens Syrians' chance to achieve justice," the LCC added.

Rumours are circulating that Brahimi may be floating an idea that would allow for a compromise solution in Syria's conflict, leaving Assad in power temporarily.

The rumours began as Vice President Faruq al-Sharaa told a pro-Damascus Lebanese newspaper last week that a clear winner was unlikely to emerge in Syria's war, and after Brahimi met with Russian Foreign Minister Sergei Lavrov and US Secretary of State Hillary Clinton early this month.

- AFP/jc

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Zelizer: Six political lessons of 2012

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STORY HIGHLIGHTS

• Julian Zelizer: 2012 was a year of bitter domestic battles, turbulence overseas


• He says the weakness of GOP, renewed strength of liberalism were apparent


• Zelizer says the year also highlighted the influence of new immigrants in America


• Zelizer: Year ended with a tragic reminder about need to act on gun control

Editor's note: Julian Zelizer is a professor of history and public affairs at Princeton University. He is the author of "Jimmy Carter" and of the new book "Governing America."

(CNN) -- 2012 has been a tumultuous year in American politics. With the presidential election capping off the year, Americans have witnessed a series of bitter domestic battles and turbulent events overseas. As the year closes out, it is worth thinking about some of the most important lessons that politicians and voters can learn from this year as they prepare for 2013.

Here are six:

The Republican brand name is in trouble: The GOP took a drubbing in 2012. To be sure, Mitt Romney ran a problematic campaign. His inability to connect with voters and a number of embarrassing gaffes hurt the chances for Republicans to succeed.

Julian Zelizer

Just as important to the outcome was the party that Romney represented. Voters are not happy with the GOP. Public approval for the party has been extremely low. Congressional Republicans have helped to bring down the party name with their inability to compromise.

Recent polls show that if the nation goes off the fiscal cliff, the Republicans would be blamed. According to a survey by NBC and the Wall Street Journal, 65 percent of people asked for a short word or phrase to describe the GOP came up with something negative. The Republican Party was also the lowest-rated political institution.

The exit polls in November showed that the GOP is out of step with the electorate on a number of big issues, including immigration and gay marriage. If Republicans don't undertake some serious reforms and offer fresh voices, all the new messaging in the world won't help them as the competition starts for 2016.

Opinion: Madness in the air in Washington

America has grown more liberal on cultural and social issues: The election results confirmed what polls have been showing for some time. If the 1960s was a battle over conservative "traditional family values" and liberal ideals of social relations, liberals eventually won. Throughout the year, polls showed, for example, that the public was becoming more tolerant of gay marriage and civil unions. Americans support the view that gay sex should be legal by a margin of 2-1, compared to 1977 when the public was split.

In the election, same-sex marriage was approved in three states, voters in Wisconsin sent to office the first openly gay senator, and two states approved of referendums to legalize the recreational use of marijuana. Americans are accepting of social diversity, and expect that the pluralism of the electorate will be reflected by the composition of elected officials in Washington.

While there are some conservative voices who lament these changes and warn of a nation that is veering toward Sodom, a majority are more than comfortable that some of the taboos and social restrictions of earlier eras are fading and that we live in a nation which is more tolerant than ever before. These social and cultural changes will certainly raise more questions about restrictive practices and policies that remain in place while creating pressure for new kinds of leaders who are responsive to these changes.

The Middle East remains a tinderbox: In the years that followed Barack Obama's election, there was some hope that the Middle East could become a calmer region. When revolutions brought down some of the most notorious dictators in the region, many Americans cheered as the fervor for democracy seemed to be riding high.

But events in 2012 threw some cold water on those hopes. The Muslim Brotherhood won control of the Egyptian government. In Syria, the government brutally cracked down on opponents, reaching the point in December where Obama's administration has started to talk about the possibility of the al-Assad regime using chemical weapons, though the severity of the threat is unclear. The battles between Palestinians and Israel raged with rockets being fired into Tel Aviv and Israelis bombing targets in Gaza.

Although national attention is focused on domestic policy, it is clear that the Middle East has the capacity to command national attention at any moment and remains as explosive as ever.

Our infrastructure needs repair: Hurricane Sandy devastated the Northeast in November, leaving millions of Americans on the East Coast without power and with damaged property. Soon after the hurricane hit, New York Gov. Andrew Cuomo made an important point. The infrastructure of our cities is outdated and needs to be revamped so that it can withstand current weather patterns. Speaking of the need for levees in New York, Cuomo said: "It is something we're going to have to start thinking about ... The construction of this city did not anticipate these kinds of situations."

Regardless of whether Congress takes action on the issue of climate change, in the short term cities and suburbs must do more work to curtail the kind of damage wreaked by these storms and to mitigate the costs of recovery -- building underground power lines, increasing resources for emergency responders, building state-of-the-art water systems, and constructing effective barriers to block water from flooding.

The new immigrants are a powerful political and social force: As was the case in the turn of the twentieth century when Eastern and Southern Europeans came into this county, massive waves of immigration are remaking the social fabric of the nation. Latino-Americans, Asian-Americans and other new portions of the electorate who have been coming into the country since the reform of immigration laws in 1965 are coming to represent a bigger and bigger portion of the electorate.

Not only are their numbers growing as a voting bloc, but they are more organized and active than ever before, both on election day as well as in policy making.

Soon after the election, The New York Times reported that 600 members of United We Dream, a network of younger immigrants who don't have their papers, met for three days to plan how to lobby for a bill that would enable 11 million illegal immigrants to become legal. One of the leaders, Christina Jimenez, explained: "We have an unprecedented opportunity to engage our parents, our cousins, our abuelitos in this fight." They have both parties scrambling as Democrats are working to fulfill the promises that brought these voters to their side in November, while some Republicans are desperate to dampen the influence of hardline anti-immigration activists in their party.

We need to do something about guns. The year ended with a horrific shooting at an elementary school in Connecticut. When a 20-year-old went on a rampage apparently using guns that had been legally purchased by his mother, the world watched with horror. Several prominent conservative advocates of gun rights, including former congressman and television host Joseph Scarborough as well as Sen. Joe Manchin, made statements indicating that the time has come to impose stricter controls and regulations on the purchase of weapons. "I don't know anybody in the sporting or hunting arena that goes out with an assault file," Manchin said.

Over the next few weeks, there will certainly be a big debate about what caused this shooting. People from different perspectives will highlight different issues but making it more difficult for people to get their hands on certain kinds of weapons, while not a cure-all, can only diminish the chances of this happening again.

There are many more lessons but these six stand out. After the trauma of the past week, let's hope the new year starts off with better days.

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The opinions expressed in this commentary are solely those of Julian Zelizer.

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