Ravens hold off 49ers, win Super Bowl 34-31


























































































































2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


2013 Super Bowl: The best photos


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8 dead in 3-vehicle tour bus crash in Calif.: Highway Patrol

Updated 2:10 a.m. EST

Authorities say at least eight people are dead and 38 are injured after a tour bus collided with two other vehicles in the mountains of Southern California about 80 miles east of Los Angeles, near the town of Forest Falls.

California Highway Patrol spokesman Mario Lopez said at least eight have died from the Sunday night crash. He says 38 injured people were taken to hospitals.

Lopez says the bus driver reported having brake problems as it came down the mountain on State Route 38, rear-ending a sedan, then flipping over and hitting a pickup truck that was pulling a trailer.

Department of Transportation spokeswoman Michelle Profant says the passengers on the bus were part of a tour group from Tijuana, Mexico, and a representative from the Mexican consulate was at the crash scene.

"It's pretty ugly up there with body parts." she said.

CBS station KCBS in L.A. says the bus was heading back to Mexico from Big Bear.

At least two passengers were said to be trapped in the wreckage, the station added.

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Ravens Defeat 49ers in Historic, Unusual Super Bowl













The Baltimore Ravens emerged Super Bowl champions after one of the strangest and most incredible Super Bowl games in recent memory.


It's the second championship for the Ravens, who pulled out a 34-31 win over the San Francisco 49ers at the Superdome in New Orleans.


The Super Bowl is the biggest spectacle in American sports, and each year becomes the most watched television event in history. This year, Jennifer Hudson kicked things off with a touching performance of "America the Beautiful" with a choir of students from Sandy Hook Elementary School.


Alicia Keys accompanied herself on the piano for a long, jazzy rendition of the national anthem, before the coin toss which resulted in San Francisco receiving to start the first half.


Although the game looked at one point like it was going to be a completely unexpected blow-out, with the Ravens leading 28-6 at the beginning of the 3rd quarter, the 49ers got some unusual help that turned the showdown into a much more exciting battle.


About a third of the way into the 3rd quarter, right after a record-tying Ravens rushing touchdown, the power went out at the Superdome, knocking the lights and air conditioning out in the indoor stadium. The crowd of more than 71,000 strong, along with a lot of antsy players, coaches, and staff waited for 34 minutes for the power to fully come back on and the game to resume.






Chris Graythen/Getty Images











Super Bowl 2013: Beyonce Rocks the Halftime Show Watch Video









Super Bowl 2013: Alicia Keys Sings 'The Star-Spangled Banner' Watch Video









Super Bowl 2013: Jennifer Hudson, Sandy Hook Students Perform Watch Video





In a statement, the NFL said authorities were "investigating the cause of the power outage," and law enforcement sources told ABC News it was just an issue with the building.


That didn't stop many people on Twitter from jokingly blaming Beyonce, the energetic halftime performer who surprisingly reunited shortly with her former band Destiny's Child, for shutting down the power. After her performance, even her husband Jay-Z got in on it, tweeting "Lights out!!! Any questions??"


VIDEO: Super Bowl 2013: Beyonce Rocks the Halftime Show


The 49ers quickly followed the long delay with a touchdown, getting themselves right back into the game. Then just a few minutes later, they found themselves in the end zone again, and it appeared the power outage had flipped the momentum towards the 49ers.


With a score of 31-29 with more than 7 minutes left in the game, San Francisco looked poised to make the biggest comeback in Super Bowl history, but the team, trying for its 6th title, wasn't able to overcome the Ravens lead.


Baltimore was able to run out the clock, and the game ended with a final score of 34-31. Purple and gold confetti fell as the Ravens rushed onto the field and celebrated -- with some colorful language from quarterback Joe Flacco audible on the live broadcast, who was caught saying, "f***ing awesome" on CBS' cameras.


The game was already historic thanks to the match-up for John and Jim Harbaugh, the first head coach brothers to ever face each other on football's biggest stage. It was also the final game for the future Hall of Fame linebacker Ray Lewis, who is, as of the conclusion of the game retired from football.


This is the fifth season in a row that the Ravens have made it to the playoffs, led by Coach John Harbaugh, and SB XLVII MVP Quarterback Joe Flacco. It's the team's first Lombardi trophy since 2000. Their victor tonight made them the only team left in the NFL to have never lost a Super Bowl in multiple appearances.






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Two worms, same brains – but one eats the other



































IF TWO animals have identical brain cells, how different can they really be? Extremely. Two worm species have exactly the same set of neurons, but extensive rewiring allows them to lead completely different lives.












Ralf Sommer of the Max Planck Institute for Developmental Biology in Tübingen, Germany, and colleagues compared Caenorhabditis elegans, which eats bacteria, with Pristionchus pacificus, which hunts other worms. Both have a cluster of 20 neurons to control their foregut.












Sommer found that the clusters were identical. "These species are separated by 200 to 300 million years, but have the same cells," he says. P. pacificus, however, has denser connections than C. elegans, with neural signals passing through many more cells before reaching the muscles (Cell, doi.org/kbh). This suggests that P. pacificus is performing more complex motor functions, says Detlev Arendt of the European Molecular Biology Laboratory in Heidelberg, Germany.












Arendt thinks predators were the first animals to evolve complex brains, to find and catch moving prey. He suggests their brains had flexible wiring, enabling them to swap from plant-eating to hunting.












This article appeared in print under the headline "Identical brains, but one eats the other"


















































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Govt has to and will deliver high quality: K Shanmugam






SINGAPORE: Law and Foreign Affairs Minister K Shanmugam said the range of views expressed about the 6.9 million population projection set out in the White Paper are completely understandable.

He was speaking to reporters at a hong bao presentation ceremony at his Chong Pang Division.

He said businesses are unhappy about the lack of growth in the labour force but there are also those who are concerned about the 6.9 million figure.

"They say 'I have difficulties with infrastructure, transport, housing with today's population and you want to increase it even more, doesn't make sense,' - that's a reaction and it is understandable.

"The government has got to explain two points. The first is we have to and will solve the current infrastructure problems and second for this long term planning, whatever the size of the population, 6.9 million is not the target, the infrastructure must be adequate and deliver high quality of life.

"That has to be a cast iron position that the government has to deliver and will deliver," he said.

- CNA/ck



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Body of missing American found in Turkey






STORY HIGHLIGHTS


  • Body of New York woman found in Istanbul

  • She disappeared almost two weeks ago

  • Sarai Sierra was a mother a two

  • She failed to arrive at Newark, New Jersey, airport




(CNN) -- The family of an American woman who went missing in Istanbul nearly two weeks ago is in mourning after learning that Turkish police found her body Saturday.


Steven Sierra wept during a phone call with CNN, as he waited in Istanbul to go with police to identify the body of his wife, Sarai Sierra.


Turkish police found the New York woman's body near ancient stone walls in Istanbul's Sarayburnu district, the semi-official Anatolian Agency reported. Police suspected she had been killed at another location.


Police told CNN's sister network CNN Turk that the body of the 33-year-old mother of two showed signs of stab wounds.


At least nine suspects had been detained in connection with Sierra's disappearance and death, Anatolian reported.


Sierra's family and friends first sounded the alarm last week after she did not arrive on a return flight from Istanbul on January 22.




"The last we heard from my wife was Monday morning on the 21st. She had spoken with her sister and the last thing she said was, 'I'm coming home tomorrow,' and she was excited and put a little smiley face at the end of her statement," said Steven Sierra in an interview with CNN earlier this week.


Steven Sierra spoke to CNN in Istanbul on Wednesday, after he and Sarai Sierra's brother, David Jimenez, traveled to Turkey to assist in the search.


The worried husband was periodically overwhelmed with emotion throughout the interview.


"You're hoping that she's OK wherever she's at, that she's not hurting, that she's not cold, that she's being fed," Steven Sierra said, choking back tears.


"Its difficult what's going through my mind, if our hopes and prayers are not answered. It is difficult when you have two children that look up to you, and you have to do your very best to stay strong regardless of what happens."


Sarai Sierra flew alone to Istanbul on January 7 after a friend at the last minute canceled plans to accompany her.


"She did a lot of researching about the area, about where she was going to stay, the safest places to go and the time of day to travel," friend Magalena Rodriguez said.


Sierrra was an amateur photographer who had amassed more than 3,000 followers since she joined the photo sharing app Instagram last year.


Some people she met through the service encouraged her to visit the ancient Turkish city, her husband said. They offered to act as tour guides. "You're admiring pictures, but you're getting acquainted with people that you've never met before," Steven Sierra said.


Sarai's brother said he had been worried about his sister's solo trip.


"We were nervous. Were just like 'always be mindful of what you do, be aware of your surroundings. Don't get too comfortable to the point where you drop your guard down,'" David Jimenez said.


But Jimenez and Sierra's husband said Sarai was determined to complete challenges that she set for herself.


As an example, they described how she competed in a triathlon several years ago, despite being a weak swimmer, and despite the fact that she did not own a bicycle. Instead, Sarai completed the cycling leg of the competition by borrowing a mountain bike from her husband.


After arriving in Istanbul, Sierra's photo feed displayed images of Istanbul's beautiful skyline and historic landmarks.


She also squeezed in an excursion to Amsterdam in the Netherlands and to Germany, starting January 15.


"She chose to go to Amsterdam for the graffiti," her husband said. "She informed me as far as how her time was out there. And she also had a tour guide that was helping her out there as well, who I know about and who I've spoken with personally."


Sierra returned to Istanbul on January 19. Three days later, she went missing.


Sierra had rebooked her flight to arrive back early, on January 22, in part to surprise her two sons, 9 and 11.


Days before her scheduled trip home, Sierra spoke with her father, Dennis Jimenez, via Skype to remind him of her flight number and arrival time.


When Dennis Jimenez went to the Newark, New Jersey, airport to pick Sierra up, she didn't show, he said.


The airline told him she had never checked in for the flight.


"She kept in contact with us all the time," Sierra's mother, Betzaida Jimenez, said. "And then not to hear from her? It's not like her."


After the tourist went missing, Turkish police released a surveillance camera video of Sarai at a shopping mall in Istanbul, flipping through her iPad.


The scenes from January 20 are the last known images of her.


The manager of the small private hotel where Sierra was staying reported last seeing her the day the surveillance video was shot. That was a Sunday.


Her Skype account, which she avidly used, went silent a day later. A day after that was when she missed her flight home.


The time she last talked with her family, Sierra was planning on January 21 to see the Galata Bridge and visit the Asian side of Istanbul, her husband said.


The former capital of the Byzantine and East Roman empires straddles the continents of Europe and Asia.


After Sierra's family raised the alarm that she was missing, some of her belongings -- including her passport and medical cards -- were found in her room in Istanbul, though her iPhone and iPad were not there, according to her husband.


Since Sierra's disappearance, Turkish police detained a Turkish man she had been in contact with who was identified only by the first name Talan, according to CNN Turk.


Millions of foreign tourists visit Turkey every year.


While it is not unusual to hear about foreigners being targeted by pickpockets and bag snatchers, violent crime involving foreign tourists is relatively rare.







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Town mourns for slain bus driver amid Ala. standoff

Updated 9:45 PM ET

MIDLAND CITY, Ala. As the police standoff with an Alabama man accused of holding a 5-year-old boy hostage continued Saturday, a nearby community prepared to bury the beloved bus driver who was shot to death trying to protect children on his bus when the episode began days earlier.

Charles Albert Poland Jr., 66, who was known around town as Chuck, was described by folks in his hometown of Newton as a humble hero. Hundreds of people attended a viewing service for Poland on Saturday evening. His funeral was set for Sunday afternoon.

"I believe that if he had to do it all over again tomorrow, he would," said Poland's sister-in-law, Lavern Skipper, earlier Saturday. "He would do it for those children."





Play Video


Ala. hostage standoff: New info on kidnapper




Authorities said Jim Lee Dykes boarded a stopped school bus filled with 21 children Tuesday afternoon and demanded two boys between 6 and 8 years old. When Poland tried to block his way, the gunman shot him several times and took one 5-year-old boy — who police say remains in an underground bunker with Dykes.

Dale County Sheriff Wally Olson said in a briefing with reporters Saturday that Dykes has told them he has blankets and an electric heater in the bunker on his property. Authorities have set up a command post at a church and have been communicating with Dykes through a ventilation pipe to the underground bunker.

Olson also said Dykes has allowed police to deliver coloring books, medication and toys for the boy.

"I want to thank him for taking care of our boy," Olson said. "That's very important."


The shooting and abduction took place in Midland City, a small town near Dothan, Ala., in the state's southeastern corner.

Newton is about three miles away, a small hamlet with fewer than 2,000 residents. It sits amid cotton farms and rolling hills sprinkled with red earth; most of the residents commute to Dothan or to a nearby Army post.

William Lisenby, a school bus driver who also taught Sunday School with Poland, was flanked by other area bus drivers as he arrived at Saturday night's viewing service for his friend at a local funeral home.

Lisenby spoke in Biblical terms when referring to Poland.


Bus driver Charles Albert Poland Jr. is seen in this undated picture released by the Dale County Board of Education.

Bus driver Charles Albert Poland Jr. is seen in this undated picture released by the Dale County Board of Education.


/

AP Photo/Dale County Board of Education

"If you'll notice the similarities there, of what Chuck did was the same thing that Jesus Christ did. These children, even though they were not Chuck's, he laid down his life to defend those children. My hat's off to him for that."

"He was a bus driver just like we are," Lisenby said. "But for the grace of God that could have been us."

Others spoke of the loss of a good man, and their hope that the little boy being held captive is alive and well and will be released soon.

"The community is real concerned," said Fred McNab, mayor of Pinckard, Ala. "You can tell by the food that's been carried over there to the church. It's just devastating. We want it to come to a resolution. We want to save that little child."

Earlier Saturday, local residents remembered Poland as a friendly, giving person.

"He's probably the nicest guy you'll ever meet," said Lonnie Daniels, the 69-year-old owner of the NAPA Auto Parts store, one of three establishments in town that was open Saturday.

Daniels last saw his friend Tuesday morning, when Poland agreed to buy a car from him. The two men shook hands and closed the deal "like gentlemen," Daniels said. Poland was to return after working his bus route to pay for the car.

"He never came back," Daniels said quietly.




Play Video


Ala. hostage crisis: Behind-the-scenes of a negotiation




Daniels said Poland had been married to his wife for 43 years. Poland was from Idaho, but his wife was from Newton. The couple lived there for decades in a small mobile home, and Poland enjoyed gardening and clearing brush from his property.

"I knew that he was always there if I needed," said Daniels, adding that Poland was an excellent mechanic with an array of tools that he lent to people in town.

Neighbors and friends said Poland did various acts of kindness for people in town, from fixing someone's tractor to tilling the garden of a neighbor who had a heart attack.

"You don't owe me anything," Poland once told a recipient of his good deed. "You're my neighbor."

Skipper said Poland and his wife would often sit on their porch, drinking coffee, praying and reading the Bible.

"They loved to be together," Skipper said.

On Saturday morning, Poland's wife wasn't home. A rack of worn trucker's caps sat on hooks on the porch, and two freshly baked pies were laid atop a cooler.

The victim's son, Aaron Poland, told NBC News that he wasn't surprised by his father's act to protect the kids on the bus.

"He considered them his children," Poland said, choking back tears. "And I know that's the reason why my dad took those shots, for his children, just like he would do for me and my sister."


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Gun Violence 'Depletes Precious Natural Resource'












It took the mass shooting in Newtown, Connecticut, to prompt lawmakers to call for stricter gun legislation. But the reality is that in a city like Chicago, where 515 murders took place last year and more than 100 shooting incidents have occurred since January 1, gun violence is an ongoing issue and it has been for years. Only, these shootings have become so common that they don't make national headlines.


"We lost a classroom full of children in Connecticut which sparked national outrage that needs to be translated into action, but in Chicago, we sometimes lose a dozen or more young people every weekend," Rep. Luis Gutierrez (D-Illinois), who serves the Chicago area, said in a statement. "Too many bullets and too many guns are killing the next generation and we have got to make it stop."


Gutierrez, like many others, believe that any debate about gun violence shouldn't just take into account mass shootings that make headline news. It should also consider the chronic gun violence that takes place on a daily basis across the U.S.


In Chicago's case, many of the victims are young minorities growing up in poor, gang-ridden neighborhoods on the south and west side of the city.


Just earlier this week a 15-year-old girl who performed at President Barack Obama's recent inauguration was gunned down, The Washington Post reported.


The teen, Hadiya Pendleton, was hanging out in a park with about a dozen other young people when she was shot. Two other victims were reportedly wounded. By all accounts she was in the wrong place at the wrong time. Reports indicate that the gunman was not even aiming at her.


And Pendleton is just the latest example. Chicago police officer Ron Holt lost his son, Blair, to gun violence in the spring of 2007. The 16-year-old was shot and killed while riding a bus after school.


Holt now works with young people in the community, particularly minorities at an increased risk of engaging in dangerous behavior, to encourage them to focus on their education instead of turning to violence.


"I explain to them that if they continue to ascribe to this diabolical idea of resolving conflict with firearms they're depleting the most precious natural resource in the community, and that is them," Holt said.


What's clear is that the root of the gun problem is not just the guns. There are several factors that play a role, many of which are rarely discussed. For example, for minority youth living in urban communities characterized by poverty, violence, particularly gun violence, tends to be chronic. And the groups largely impacted tend to be African American and Hispanic.


A lot of that has to do with acculturation, according to Rahsmia Zatar, executive director of Strong Youth, a gang prevention and intervention organization. There is a sense that it's difficult to move beyond one's cultural sphere.


As a result, minorities often tend to gravitate toward other young minorities in similar situations, and turn to violence to gain a sense of control, however false it really is.






Charles Rex Arbogast/AP Photo







"It's easy to fall victim to feeling a sense of empowerment through violence," Zatar said. "They feel they have limited opportunities and they don't have a sense of 'I can achieve,' [or] that there is something here for me that's better."


According to the 2011 American Community Survey by the U.S. Census Bureau, more than 30 percent of Chicago's African-American population and nearly 27 percent of Hispanics live below the poverty line. Perhaps more importantly, blacks and whites remain largely segregated, with African-Americans making up the vast majority of neighborhoods in the south, and whites comprising most of the north. Latinos are somewhat more mixed, often living in "buffer" communities between blacks and whites, which could exacerbate the pressure to conform to two cultures, neither of which is entirely comfortable.


These various enclaves also suffer from a distinct gang problem. Chicago Police Commissioner Garry McCarthy told Reuters the city is plagued by the breakup of larger more established gangs into new factions that are fighting over everything from turf to money.


Then there's the city's illicit gun issue, which is bigger than New York's or Los Angeles' despite strict laws to limit weapons. Gun shops are actually outlawed in Chicago, as are assault weapons and high-capacity magazines. Handguns were even banned until 2010.


Still, in a place like Chicago it's handguns doing the most damage. According to statistics from the Bureau of Alcohol, Tobacco, Firearms and Explosives, most of the guns they recovered in Illinois were pistols, followed by revolvers and rifles. Machine guns come in a distant sixth.


Why so many guns? Gun laws in neighboring communities are not as strict, and firearms make their way into the city. According to a recent article by The New York Times, officials "seized 7,400 guns [in Chicago] in crimes or unpermitted uses last year (compared with 3,285 in New York City), and have confiscated 574 guns just since Jan. 1 — 124 of them last week alone."


And while Chicago residents are required to report the loss or theft of a handgun, that same law does not apply to all of Illinois, so a stolen firearm could easily make its way into Chicago without the owner ever reporting it missing.


The dynamics created in poor minority communities like those in Chicago combined with the sheer number of guns that make their way into such a city bear out in the overall statistics.


According to the Bureau of Justice's National Crime Victimization Survey, African Americans were disproportionately represented among homicide victims and offenders between 1980 and 2008. They were six times more likely than whites to be homicide victims and seven times more likely than whites to commit homicides.


Latinos don't fare much better. According to the National Council of La Raza, the nation's largest Hispanic advocacy organization, "Today in America, every three hours a young person is killed by firearm violence. Every 14 hours, that teen or child is Latino."


Young Latinos are especially likely to be impacted by gang violence in places like Chicago. Nationally, Hispanics are also more likely than non-Hispanics to be victims of violent crimes committed by gang members.


The impact of guns on the Latino community may explain why they're inclined to favor increased gun control. According to the Pew Research Center, while 57 percent of whites think it's more important to protect the rights of Americans to own guns than to protect gun ownership, only 29 percent of Latinos feel the same way.


Holt would certainly like to see something change. Several days after his son was killed, he received a voicemail. It was then-Senator Barack Obama. The young lawmaker had called Holt to express his condolences and to promise that if there was anything he could do in the future to help curb gun violence, he was prepared to do it. The two never spoke on the phone, but Holt remembers the message.




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Astrophile: A scorched world with snow black and smoky






















Astrophile is our weekly column on curious cosmic objects, from the solar system to the far reaches of the multiverse






















Object: Titanium oxide snow
Location: The hot-Jupiter planet HD 209458b












There is something magical about waking up to discover it has snowed during the night. But there's no powdery white blanket when it snows on exoplanet HD 209458b. Snow there is black, smoky and hot as hell – resembling a forest fire more than a winter wonderland. Put it this way: you won't be needing mittens.












HD 209458b belongs to a family called hot Jupiters, gas-giant planets that are constantly being roasted due to their closeness to their sun. By contrast, the gas giants in our immediate neighbourhood, including Jupiter, are frigid, lying at the solar system's far reaches.












HD 209458b is also noteworthy because it is tidally locked, so one side is permanently facing towards its star while the other is in perpetual night. On the face of it, these conditions wouldn't seem to invite snow: temperatures on the day side come close to 2000° C, while the night side is comparatively chilly at around 500° C.












Snow made of water is, of course, impossible on this scorched world, but the drastic temperature differential sets up atmospheric currents that swirl material from the day side to night and vice versa. That means that any substances with the right combination of properties might be gaseous on the day side and then condense into a solid on the night side, and fall as precipitation. Say hello to titanium oxide snow.











Stuck on the surface













Although oxides of titanium make up only a small component of a hot Jupiter's atmosphere, these compounds have the right properties to fall as snow. But there was a snag that could have put a stop to any blizzards. Older computer models of hot Jupiters suggested that titanium oxides condensing in the air on the night side would snow – and remain on the relatively cool surface forever. "Imagine on Earth if you had no mechanism to evaporate water, it would never rain," says Vivien Parmentier of the Côte d'Azur Observatory in Nice, France.












Now he and colleagues have created a more detailed 3D computer model that shows that the snow can become a gas again as it falls and the temperature and pressure increase. Strong updraughts can then blow the titanium oxides back to the upper atmosphere. "The gas can come back on the top layers and snow again and again," says Parmentier.












Snowfall on HD 209458b would be like none you've ever seen. Though titanium dioxide is white and shiny, for example, the snowflakes would also contain silica oxides from the atmosphere, making them black. Since the atmosphere is also dark, snowstorms on the planet would be a smoky affair, the opposite of the white-outs we get on Earth. "It would be like being in the middle of a forest fire," says Parmentier.











Although the team studied a particular hot Jupiter, their model should apply equally to other planets of this type, suggesting hot snow is a common occurrence. Parmentier says we may have already spotted snow clouds on another hot Jupiter, HD 189733b, as spectral analysis of the planet suggests the presence of microscopic particles in its atmosphereMovie Camera.













David Sing of the University of Exeter, UK, who helped identify such particles on HD 189733b, says the team's new model goes a long way to explaining how titanium oxides behave on hot Jupiters. "We're pretty used to water condensing on Earth; there it is titanium because the temperatures are so much hotter."












Hot, black snow – now that would be something to wake up to.












Reference: http://arxiv.org/abs/1301.4522


















































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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Projected 6.9m population basis for healthcare planning: Gan






SINGAPORE: Health Minister Gan Kim Yong said the projected 6.9 million population by 2030 in the White Paper will serve as a basis for planning efforts to ensure sufficient capacity in the healthcare sector.

He also said his ministry is adjusting its plans to be able to meet future healthcare needs.

Mr Gan stressed that the 6.9 million figure is not a target.



Read More..