Today at New Scientist: 21 January 2013

Twitter reveals how Higgs gossip reached fever pitch

Anyone who fondly remembers the heady days of excitement preceding the Higgs boson announcement last year can now relive the experience

Vibrating navigator shows cyclists the way

A buzzing GPS-fuelled belt that tells cyclists when to turn might help them keep their eyes on the road and save lives

Call off the pregnancy police - women want the truth

Pregnant women can do without being made to feel guilty and burdened by wrong or contradictory advice. Just give them the facts, says Linda Geddes

Supernova-powered bow shock creates cosmic spectacle

The infrared vision of NASA's Spitzer Space Telescope shows how a massive speeding star is electrifying its surroundings

First video of squid sex reveals deep-sea Kama Sutra

Watch a pair of squid caught in the act for the first time in an unexpected sexual position

Let's be clear on health risks from radiation

Should Californians have had iodine after Fukushima? In Radiation Robert Peter Gale and Eric Lax clear up the confusion over radiation and health

Wind power delivers too much to ignore

Although aesthetic concerns need to be heard, qualms about wind's reliability are wide of the mark, argues an energy policy researcher

Quadruple DNA helix discovered in human cells

The classic double helix has been joined by a four-stranded version that may play a role in cancer

Turn up the bass to scare birds away from planes

Subwoofers that blast out sounds too low to be heard by humans can keep birds out of busy air space, and prevent them colliding with planes

Earth may be crashing through dark matter walls

If the universe is a patchwork quilt of exotic force fields, we should be able to detect dark matter whenever we cross between patches

Blinded by sun? Let your steering wheel guide you

A steering wheel that buzzes when drivers are dazzled by bright lights and drift from their lane could help curb accidents

NASA planet-hunter is injured and resting

The Kepler space telescope has put its search for alien Earths on hold while it recovers from a stressed reaction wheel

High-tech Dreamliner's wings clipped by battery trouble

Boeing's 787 Dreamliner is replete with cutting-edge technology. But problems with its complex systems now have the planes grounded around the world

Read More..

Israelis vote in elections seen swinging to the right

JERUSALEM: Israelis vote Tuesday in a general election expected to return Prime Minister Benjamin Netanyahu to power at the head of a government of hardline right-wing and religious parties.

The ballot to choose Israel's 19th parliament is likely to usher in a government that will swing further to the right, undermining the chances of a peace deal with the Palestinians and raising the prospect of greater diplomatic isolation for the Jewish state.

Those elected will face key diplomatic and foreign policy questions, including Iran's nuclear programme, which much of the world believes is a cover for a weapons drive, and pressure to revive peace talks with the Palestinians.

No less pressing are the domestic challenges, including a major budget crisis and looming austerity cuts, which are likely to exacerbate already widespread discontent over spiralling prices.

Opinion polls have consistently shown that Netanyahu's rightwing Likud party, running on a joint list with the hardline secular nationalist Yisrael Beitenu, is well ahead of its rivals.

But as the day of reckoning neared, the numbers showed falling support for Likud-Beitenu, which is now seen taking 32 seats -- 10 fewer than it currently holds -- although the centre-left Labour party, its closest contender, is following a distant second with 17.

Final polls late last week had showed the right-wing-religious bloc taking between 61 and 67 seats, compared with 53 to 57 for the centre-left and Arab parties.

In a largely uneventful campaign, the surprise element has been Naftali Bennett, the young, charismatic new leader of the far-right nationalist religious Jewish Home who took over the party in November and is a rising star for the settler lobby.

The party, which firmly opposes a Palestinian state and won just three seats in 2009, is on course to win 15, making it the second faction in parliament and a likely partner in any future coalition government.

Bennett's explosion onto the political scene has spooked Netanyahu, pundits say, with the premier pushing hard to stem the flow of right-wing votes to Jewish Home by burnishing his own credentials as a defender of Israeli settlement in the occupied territories.

Some 5.65 million Israelis are eligible to vote in Tuesday's parliamentary elections.

Voters will be able to cast ballots at 10,132 polling stations which will open at 0500 GMT and close 15 hours later, with television exit polls due to be broadcast immediately afterwards.

Security has been tightened across the country and more than 20,000 police officers have been deployed to secure the vote.

With Netanyahu almost certain to return to the premier's office, the big question is the makeup of the coalition he will piece together and how it will steer Israel on key issues such as settlement activity, talks with the Palestinians and Iran.

But pundits were unanimous he would pick his natural allies to form the next government, which was widely expected to be dominated by right-wing and religious parties.

"In the next coalition, which will include Likud-Beitenu, Jewish Home, Shas, United Torah Judaism and perhaps Yesh Atid as well, there will be a majority, for the first time in history, for the ultra-Orthodox and religious MPs," wrote Shalom Yerushalmi in Maariv newspaper.

"This is mainly a great victory for the settlers, who have become the leading ideological force in the country."

-AFP/fl

Read More..

Ralph Nader: Video game corps are 'Electronic Child Molesters'

Ralph Nader in a 2008 interview on CBS's Eye to Eye program.

(Credit:
CBS News)

Not one to keep his opinion to himself, former presidential candidate Ralph Nader has come down hard on video games. In fact, he has gone as far as to call the companies that make them "electronic child molesters."

In an interview with Politico yesterday, Nader blasted President Obama's gun control package that was unveiled last week. The two-time Green Party presidential candidate said that the president's plan needs to go further in regulating video game creators that add violence to their games.

"Television program violence? Unbelievable. Video game violence? Unprecedented," Nader told Politico. "I'm not saying he wants to censor this, I think he should sensitize people that they should protect their children family by family from these kinds of electronic child molesters."

Nader's outrage comes on the heels of the mass shooting at Sandy Hook Elementary School in Newtown, Conn., where 20 children and six others were killed by a 20-year-old shooter.

This isn't the first time Nader has used the phrase "electronic child molesters." After the Columbine High School massacre in Littleton, Colo., in 1999 when two students from the school murdered 12 students and one teacher, Nader raged that corporations shared some of the blame.

"All this is fine with the companies -- these boys and girls spent more than $25 billion last year, and what they got in return is violent, addictive, and tawdry sensuality," Nader wrote in his blog at the time. "These electronic child molesters have little sense of restraint or boundaries. Their odious fare is becoming more coarse, more violent, and more interactive to seduce these youngsters into an addiction of direct video game involvement in the mayhem."

Read More..

Attack at Algeria Gas Plant Heralds New Risks for Energy Development

The siege by Islamic militants at a remote Sahara desert natural gas plant in Algeria this week signaled heightened dangers in the region for international oil companies, at a time when they have been expanding operations in Africa as one of the world's last energy frontiers. (See related story: "Pictures: Four New Offshore Drilling Frontiers.")

As BP, Norway's Statoil, Italy's Eni, and other companies evacuated personnel from Algeria, it was not immediately clear how widely the peril would spread in the wake of the hostage-taking at the sprawling In Amenas gas complex near the Libyan border.

Map by National Geographic

Algeria, the fourth-largest crude oil producer on the continent and a major exporter of natural gas and refined fuels, may not have been viewed as the most hospitable climate for foreign energy companies, but that was due to unfavorable financial terms, bureaucracy, and corruption. The energy facilities themselves appeared to be safe, with multiple layers of security provided both by the companies and by government forces, several experts said. (See related photos: "Oil States: Are They Stable? Why It Matters.")

"It is particularly striking not only because it hasn't happened before, but because it happened in Algeria, one of the stronger states in the region," says Hanan Amin-Salem, a senior manager at the industry consulting firm PFC Energy, who specializes in country risk. She noted that in the long civil war that gripped the country throughout the 1990s, there had never been an attack on Algeria's energy complex. But now, hazard has spread from weak surrounding states, as the assault on In Amenas was carried out in an apparent retaliation for a move by French forces against the Islamists who had taken over Timbuktu and other towns in neighboring Mali. (See related story: "Timbuktu Falls.")

"What you're really seeing is an intensification of the fundamental problem of weak states, and empowerment of heavily armed groups that are really well motivated and want to pursue a set of aims," said Amin-Salem. In PFC Energy's view, she says, risk has increased in Mauritania, Chad, and Niger—indeed, throughout Sahel, the belt that bisects North Africa, separating the Sahara in the north from the tropical forests further south.

On Thursday, the London-based corporate consulting firm Exclusive Analysis, which was recently acquired by the global consultancy IHS, sent an alert to clients warning that oil and gas facilities near the Libyan and Mauritanian borders and in Mauritania's Hodh Ech Chargui province were at "high risk" of attack by jihadis.

"A Hot Place to Drill"

The attack at In Amenas comes at a time of unprecedented growth for the oil industry in Africa. (See related gallery: "Pictures: The Year's Most Overlooked Energy Stories.") Forecasters expect that oil output throughout Africa will double by 2025, says Amy Myers Jaffe, executive director of the energy and sustainability program at the University of California, Davis, who has counted 20 rounds of bidding for new exploration at sites in Africa's six largest oil-producing states.

Oil and natural gas are a large part of the Algerian economy, accounting for 60 percent of government budget revenues, more than a third of GDP and more than 97 percent of its export earnings. But the nation's resources are seen as largely undeveloped, and Algeria has tried to attract new investment. Over the past year, the government has sought to reform the law to boost foreign companies' interests in their investments, although those efforts have foundered.

Technology has been one of the factors driving the opening up of Africa to deeper energy exploration. Offshore and deepwater drilling success in the Gulf of Mexico and Brazil led to prospecting now under way offshore in Ghana, Mozambique, and elsewhere. (See related story: "New Oil—And a Huge Challenge—for Ghana.") Jaffe says the Houston-based company Anadarko Petroleum has sought to transfer its success in "subsalt seismic" exploration technology, surveying reserves hidden beneath the hard salt layer at the bottom of the sea, to the equally challenging seismic exploration beneath the sands of the Sahara in Algeria, where it now has three oil and gas operations.

Africa also is seen as one of the few remaining oil-rich regions of the world where foreign oil companies can obtain production-sharing agreements with governments, contracts that allow them a share of the revenue from the barrels they produce, instead of more limited service contracts for work performed.

"You now have the technology to tap the resources more effectively, and the fiscal terms are going to be more attractive than elsewhere—you put these things together and it's been a hot place to drill," says Jaffe, who doesn't see the energy industry's interest in Africa waning, despite the increased terrorism risk. "What I think will happen in some of these countries is that the companies are going to reveal new securities systems and procedures they have to keep workers safe," she says. "I don't think they will abandon these countries."

This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.

Read More..

Inauguration: 7.5 Things You Should Have Seen

A presidential inauguration is a big, long event that lasts all day and into the night–and who has time to really watch it? People have jobs, ones that don’t let you off for a federal holiday.

Everyone (or, at least, some) will be talking about it, which means potential embarrassment for anyone who doesn’t know what happened. Thankfully, ABC employs  news professionals stationed in Washington, D.C., to pay attention to these kinds of things and boil off some of the less noteworthy or interesting stuff, presenting you with short videos of everything that really mattered. Or at least the things a lot of people were talking about.

A full day of paying attention to President Obama’s second Inauguration leads one of those professionals to offer these 7 1/2 things:

1. Beyonce Sang the National Anthem

Boy, howdy! Did she ever? Beyonce has essentially become the Obama’s go-to female performer: She recorded a music video for Michelle Obama’s “Let’s Move” initiative in 2011, and she performed at the president’s last inauguration in 2009. Her velvety, soulful “Star Spangled Banner” is getting good reviews.

2. Kelly Clarkson Also Sang

Kelly Clarkson is not as “in” with the First Couple as Beyonce seems to be, but they let her sing “My Country ‘Tis of Thee,” and she did a pretty good job with it. This was kind of weird, though, because at one point she said she loved Ron Paul, although she later said she would vote for Obama.

3.  Obama Talked About Gay Rights

This may not seem shocking since more than half the country, including President Obama, supports gay marriage. But the president made a point of mentioning gay rights during his speech, equating the struggles of the LGBT community with those of  past civil rights movements, and in doing so made history.

He name-checked Stonewall, the New York City bar that was raided by police in 1969 sparking riots to protest the anti-gay crackdown. And he actually used the word “gay”: “Our journey is not complete until our gay brothers and sisters are treated like anyone else under the law – for if we are truly created equal, then surely the love we commit to one another must be equal as well,” Obama said in his address.

Plenty of inaugural addresses have been chock full of rhetoric about freedom and equality, but in the last four years, the political culture surrounding gay rights has changed significantly, as more states legalized same-sex marriage and as broad swaths of the country got more comfortable with homosexuality in general. Obama’s “evolution” on gay marriage, and now his inaugural address, have helped signify that change.

4. Joe Biden Made Jokes and Shook Hands With People

Could we expect anything less?

Here’s how the Vice President toasting Sen. Chuck Schumer instead of President Obama at the big luncheon:  ”I raise my glass to a man who never, never, never operates out of fear, only operates out of confidence, and a guy–I’m toasting you, Chuck.” Watch it:

And here he is, scurrying around and jovially shaking hands with people along the parade route:

5. Richard Blanco Read a Poem That Was Sort of Whitman-esque, But Not Entirely

Cuban-born Richard Blanco became America’s first openly gay, Latino Inauguration poet. He read a nine-stanza poem entitled “One Today,” which set a kind of unifying American tableau scene.

6. Obama and Michelle Walked Around Outside The Limo

President Obama walked part of the parade route, from the Capitol to the White House, with Michelle. They waved to people. It is not entirely abnormal for a president to do this at an inaugural parade. But they walked quite a ways.

7. John Boehner: ‘Godspeed’

The speaker of the House presented American flags to Obama and Biden, telling them: “To you gentlemen, I say congratulations and Godspeed.”

7 1/2. Sasha and Malia Were There. 

Obama’s daughters, Sasha and Malia, were there. They didn’t really do much, but they did wear coats of different shades of purple that got a lot of  attention on Twitter.

Reports of the daughters looking at smartphones and applying lip gloss highlighted their day. As did this .gif of Sasha yawning.

Read More..

Quadruple DNA helix discovered in human cells

Sixty years after James Watson and Francis Crick established that DNA forms a double helix, a quadruple-stranded DNA helix has turned up.

Quadruple helices that intertwine four, rather than two, DNA strands had been made in the laboratory, but were regarded as curiosities as there was no evidence that they existed in nature. Now, they have been identified in a range of human cancer cells.

The four-stranded packages of DNA, dubbed G-quadruplexes, are formed by the interaction of four guanine bases that together form a square. They appear to be transitory structures, and were most abundant when cells were poised to divide. They appeared in the core of chromosomes and also in telomeres, the caps on the tips of chromosomes that protect them from damage.

Because cancer cells divide so rapidly, and often have defects in their telomeres, the quadruple helix might be a feature unique to cancer cells. If so, any treatments that target them will not harm healthy cells.

"I hope our discovery challenges the dogma that we really understand DNA structure because Watson and Crick solved it in 1953," says Shankar Balasubramanian of the University of Cambridge, UK.

Tagged with antibodies

Balasubramanian's team identified the four-stranded structures in cancer cells with the help of an antibody that attaches exclusively to G-quadruplexes. To stop them from unravelling into the ordinary DNA, they exposed the cells to pyridostatin, a molecule that traps quadruple helices wherever they form.

This enabled the researchers to count how many formed at each stage of cell multiplication. The G-quadruplexes were most abundant in the "S-phase" – when cells replicate their DNA just prior to dividing.

"I expect they will also exist in normal cells, but I predict that there will be differences with cancer cells," says Balasubramanian. His hunch is that the G-quadruplexes are triggered into action by chaotic genomic mutations and reorganisations typical of cancerous or precancerous cells.

"This research further highlights the potential for exploiting these unusual DNA structures to beat cancer, and the next part of this is to figure out how to target them in tumour cells," says Julie Sharp of Cancer Research UK, which funded the research.

Another important question that Balasubramanian's and other teams will try to answer is whether G-quadruplexes play a role in embryo development, and whether such a role is mistakenly reactivated in cancer cells. "We plan to find out whether the quaduplexes are a natural nuisance, or there by design," he says.

Journal reference: Nature Chemistry, DOI: 10.1038/NCHEM.1548

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.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

Read More..

President Tan confident US will steer world out of uncertainty

SINGAPORE: President Tony Tan Keng Yam has said he is confident that the United States will be able to rise to the occasion of steering of the world out of economic uncertainty, under the leadership of President Barack Obama.

In a congratulatory letter to President Obama on his inauguration for a second term in office, President Tan noted that during his first term, the US averted a financial and economic catastrophe while the lives of many Americans improved.

President Tan said the global economic outlook remains subdued and many countries will continue to look to the US for leadership.

He said he is confident that under President Obama's leadership, as well as the resourcefulness and tenacity of the American spirit, the US will be able to rise to the occasion.

Turning to relations between Singapore and the US, President Tan said both sides enjoy excellent and multifaceted relations underpinned by the US-Singapore Free Trade Agreement and the Strategic Framework Agreement.

Over the last four years, cooperation between both countries has broadened to include education and technical assistance to developing countries, particularly within the Association of Southeast Asian Nations.

President Tan said he looks forward to further enhancing the bilateral relationship.

He also wished President Obama every success during his second term in office.

- CNA/al

Read More..

Where to watch Obama's inauguration online

President Obama was sworn in for his second term today in a quiet ceremony at the White House. But it was a simple prelude to the festivities that will take place tomorrow when Obama and Vice President Joe Biden are sworn in outside of the U.S. Capital before hundreds of thousands of spectators -- and countless more who will be tuning in online to watch the event.

The last presidential inauguration ceremony in 2009 was considered by many to be the most interactive ever. But thanks to multimedia content -- including the return of high-resolution satellite imagery from GeoEye -- we may see just as many innovative forms of coverage for this year's event, even though this one is expected to be more low-key.

The public swearing-in ceremony begins at 11:30 a.m. ET, with the official event happening at 11:55 a.m.

Here's just a partial list of where to tune in. Feel free to add to it in the comments below.

• The 2013 Presidential Inaugural Committee will be hosting a live stream of the swearing-in ceremony starting at 11:30 a.m. ET, as well as live video of the inaugural parade and the Commander-in-Chief's Ball.

• The Wall Street Journal will be presenting the inauguration live at 11 a.m ET. It will be anchored by Washington bureau chief Gerald F. Seib, Wendy Bounds and Simon Constable from its New York studios. You can watch it on multiple platforms including WSJ Live, YouTube, Hulu, and Ustream.

• CBS News, our sister site, will be offering live coverage on TV and the Web starting at 10 a.m. ET. The site will also feature live coverage of related events, interactive slide shows, and analysis of Obama's first term and what's ahead in his next term.

• NBCNews.com and the NBC Politics app, which is available on the iPhone, iPad, or iPod Touch, will carry live streams of NBC News' coverage starting at 10 a.m. ET.

• C-SPAN's online live coverage of the inauguration starts at 7 a.m. ET and will include the swearing in, followed by the president's address, the inaugural luncheon, and the inaugural parade.

• Fox News will offer a live stream of the inaugural address as well as coverage of related events around Washington. Fox's coverage will also be available on Hulu.

• ABC News and Yahoo News have teamed up to produce three feeds of online video coverage across ABCNews.com, Yahoo News, GoodMorningAmerica.com, ABC News' iPad and iPhone apps and ABC News affiliate websites, as well as on the ABC News YouTube channel.

Read More..

Attack at Algeria Gas Plant Heralds New Risks for Energy Development

The siege by Islamic militants at a remote Sahara desert natural gas plant in Algeria this week signaled heightened dangers in the region for international oil companies, at a time when they have been expanding operations in Africa as one of the world's last energy frontiers. (See related story: "Pictures: Four New Offshore Drilling Frontiers.")

As BP, Norway's Statoil, Italy's Eni, and other companies evacuated personnel from Algeria, it was not immediately clear how widely the peril would spread in the wake of the hostage-taking at the sprawling In Amenas gas complex near the Libyan border.

Map by National Geographic

Algeria, the fourth-largest crude oil producer on the continent and a major exporter of natural gas and refined fuels, may not have been viewed as the most hospitable climate for foreign energy companies, but that was due to unfavorable financial terms, bureaucracy, and corruption. The energy facilities themselves appeared to be safe, with multiple layers of security provided both by the companies and by government forces, several experts said. (See related photos: "Oil States: Are They Stable? Why It Matters.")

"It is particularly striking not only because it hasn't happened before, but because it happened in Algeria, one of the stronger states in the region," says Hanan Amin-Salem, a senior manager at the industry consulting firm PFC Energy, who specializes in country risk. She noted that in the long civil war that gripped the country throughout the 1990s, there had never been an attack on Algeria's energy complex. But now, hazard has spread from weak surrounding states, as the assault on In Amenas was carried out in an apparent retaliation for a move by French forces against the Islamists who had taken over Timbuktu and other towns in neighboring Mali. (See related story: "Timbuktu Falls.")

"What you're really seeing is an intensification of the fundamental problem of weak states, and empowerment of heavily armed groups that are really well motivated and want to pursue a set of aims," said Amin-Salem. In PFC Energy's view, she says, risk has increased in Mauritania, Chad, and Niger—indeed, throughout Sahel, the belt that bisects North Africa, separating the Sahara in the north from the tropical forests further south.

On Thursday, the London-based corporate consulting firm Exclusive Analysis, which was recently acquired by the global consultancy IHS, sent an alert to clients warning that oil and gas facilities near the Libyan and Mauritanian borders and in Mauritania's Hodh Ech Chargui province were at "high risk" of attack by jihadis.

"A Hot Place to Drill"

The attack at In Amenas comes at a time of unprecedented growth for the oil industry in Africa. (See related gallery: "Pictures: The Year's Most Overlooked Energy Stories.") Forecasters expect that oil output throughout Africa will double by 2025, says Amy Myers Jaffe, executive director of the energy and sustainability program at the University of California, Davis, who has counted 20 rounds of bidding for new exploration at sites in Africa's six largest oil-producing states.

Oil and natural gas are a large part of the Algerian economy, accounting for 60 percent of government budget revenues, more than a third of GDP and more than 97 percent of its export earnings. But the nation's resources are seen as largely undeveloped, and Algeria has tried to attract new investment. Over the past year, the government has sought to reform the law to boost foreign companies' interests in their investments, although those efforts have foundered.

Technology has been one of the factors driving the opening up of Africa to deeper energy exploration. Offshore and deepwater drilling success in the Gulf of Mexico and Brazil led to prospecting now under way offshore in Ghana, Mozambique, and elsewhere. (See related story: "New Oil—And a Huge Challenge—for Ghana.") Jaffe says the Houston-based company Anadarko Petroleum has sought to transfer its success in "subsalt seismic" exploration technology, surveying reserves hidden beneath the hard salt layer at the bottom of the sea, to the equally challenging seismic exploration beneath the sands of the Sahara in Algeria, where it now has three oil and gas operations.

Africa also is seen as one of the few remaining oil-rich regions of the world where foreign oil companies can obtain production-sharing agreements with governments, contracts that allow them a share of the revenue from the barrels they produce, instead of more limited service contracts for work performed.

"You now have the technology to tap the resources more effectively, and the fiscal terms are going to be more attractive than elsewhere—you put these things together and it's been a hot place to drill," says Jaffe, who doesn't see the energy industry's interest in Africa waning, despite the increased terrorism risk. "What I think will happen in some of these countries is that the companies are going to reveal new securities systems and procedures they have to keep workers safe," she says. "I don't think they will abandon these countries."

This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.

Read More..

Sasha's View: 'Good Job, Daddy. You Didn't Mess Up'

President Barack Obama and Vice President Joe Biden today officially embarked on their second term, taking the Constitutionally mandated oath of office in two separate private ceremonies inside their homes.

Shortly before noon in the Blue Room of the White House, Obama raised his right hand, with his left on a family Bible, reciting the oath administrated by Chief Justice John Roberts. He was surrounded by immediate family members, including first lady Michelle Obama and daughters, Malia and Sasha.

As he hugged his wife and daughters, Sasha said, "Good job, Daddy."

"I did it," he said.

"You didn't mess up," she answered.

Biden was sworn in earlier today by Justice Sonia Sotomayor, the first Hispanic to administer a presidential oath, in a ceremony at his official residence at the U.S. Naval Observatory. He was joined by more than 120 guests, including cabinet members, extended family and his wife, Dr. Jill Biden.

Because Jan. 20 -- the official date for a new presidential term -- falls on a Sunday this year, organizers delayed by one day the traditional public inauguration ceremony and parade down Pennsylvania Avenue.

Vice President Joe Biden Sworn in for 2nd Term Watch Video

Obama Sworn In for Second Term, Kicks off Inaugural Festivities Watch Video

Obama and Biden will each repeat the oath on Monday on the west front of the Capitol, surrounded by hundreds of dignitaries and members of Congress. An estimated 800,000 people are expected to gather on the National Mall to witness the moment and inaugural parade to follow.

The dual ceremonies in 2013 means Obama will become the second president in U.S. history to take the presidential oath four times. He was sworn in twice in 2008 out of an abundance of caution after Roberts flubbed the oath of office during the public administration. This year Roberts read from a script.

Franklin Roosevelt was also sworn in four times but, unlike Obama, he was elected four times.

This year will mark the seventh time a president has taken the oath on a Sunday and then again on Monday for ceremonial purposes. Reagan last took the oath on a Sunday in 1985.

Both Obama and Biden took the oath using a special family Bible. Obama used a text that belonged to Michelle Obama's grandmother LaVaughn Delores Robinson. Biden placed his hand on a 120-year-old book with a Celtic cross on the cover that has been passed down through Biden clan.

The official inaugural activities today also included moments of prayer and remembrance that marked the solemnity of the day.

Obama and Biden met at Arlington National Cemetery for a brief morning ceremony to place a wreath on the Tomb of the Unknowns, honoring military service members who served and sacrificed. The men stood shoulder to shoulder, bowing their heads as a bugler played "Taps."

Biden, who is Catholic, began the day with a private family mass at his residence. The president and first family attended church services at Metropolitan African Methodist Episcopal Church, a historically black church and site of two pre-inaugural prayer services for former President Bill Clinton and Vice President Al Gore and their families.

The Obamas and Bidens plan to participate in a church service on Monday morning at St. John's Episcopal, across Lafayette Park from the White House. They will also attend a National Prayer Service on Tuesday at the National Cathedral.

Later on Sunday evening, the newly-inaugurated leaders will attend a candlelight reception at the National Building Museum. The president and vice president are expected to deliver brief remarks to their supporters.

Read More..