Sarai Sierra's 2 Young Boys Don't Know Mom's Dead

The two young sons of slain New York mom Sarai Sierra are under the impression that their father has gone to Turkey to bring their mother home - alive.

Sierra, whose battered body was found near a highway in Istanbul over the weekend, was the mother of two boys aged 9 and 11.

Steven Sierra, who went to Istanbul in search of his wife after she disappeared nearly two weeks ago, told his children that he was going to Turkey to bring their mom home.

"The father will be speaking to them and it's something that's going to be hard and he's going to be talking to them when he comes back," Betsy Jimenez, the mother of Sarai Sierra, said today during a family news conference.

State Representative Michael Grimm said Steven Sierra's biggest concern is telling his children that mom's not coming home.

"It's going to be the hardest thing he's ever going to have to do in his life," said Grimm, who added that the Staten Island family isn't sure when Steven Sierra will be able to bring home his wife's body.

An autopsy was completed Sunday on Sarai Sierra, 33, but results aren't expected for three months. Turkish officials however said she was killed by at least one fatal blow to her head.

A casket holding the Staten Island mother was carried through alleyways lined with spice and food stalls to a church, where the casket remained on Monday.

Turkish police hope DNA samples from 21 people being questioned in the case will be key to finding the perpetrators, the Associated Press reported, according to state run media.

Sarai Sierra's Body Found: Missing New York Mom Found in Turkey Watch Video

Body Found in Search for Missing Mother in Turkey Watch Video

Vanished Abroad: US Woman Missing in Turkey Watch Video

Earlier this week, it was also reported that Turkish police are speaking to a local man who was supposed to meet Sierra the day she disappeared, but he said she never showed.

After an intense search for Sierra that lasted nearly two weeks, her body was found Saturday near the ruins of some ancient city walls and a highway. Sierra was wearing the same outfit she was seen wearing on surveillance footage taken at a food court and on a street the day she vanished, Istanbul Police Chief Huseyin Capkin said.

Sierra's body was taken to a morgue, Capkin said, and was identified by her husband.

It did not appear she had been raped or was involved in any espionage or trafficking, Capkin said.

Betsy Jimenez said Monday that her family has many unanswered questions such as what happened to her daughter after she left her hotel room to go and take photographs of a famous bridge.

"They're still investigating so they might think it might be a robbery, but they're not sure," said Jimenez.

Sierra, who had traveled to Istanbul on Jan. 7 to practice her photography hobby, was last heard from on Jan. 21, the day she was due to board a flight home to New York City.

Dennis Jimenez, Sierra's father, told reporters Monday that he didn't want her to go on the trip.

"I didn't want her to go. But, she wanted to go because this was an opportunity for her to sightsee and pursue her photography hobby because Turkey was a land rich with culture and ancient history and she was fascinated with that," said Jimenez.

While in Istanbul, Sierra would Skype with her family and friends daily, telling them about how amazing the culture was.

Sierra's best friend Maggie Rodriguez told ABC News that she was forced to pull out of the trip at the last minute because she couldn't afford it. That's why Sierra traveled alone.

Her husband, Steven Sierra, and brother, David Jimenez, traveled to Istanbul last Sunday to meet with American and Turkish officials and push the search forward.

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Bug protects itself by turning its environment to gold

Mythical King Midas was ultimately doomed because everything he touched turned to gold. Now, the reverse has been found in bacteria that owe their survival to a natural Midas touch.

Delftia acidovorans lives in sticky biofilms that form on top of gold deposits, but exposure to dissolved gold ions can kill it. That's because although metallic gold is unreactive, the ions are toxic.

To protect itself, the bacterium has evolved a chemical that detoxifies gold ions by turning them into harmless gold nanoparticles. These accumulate safely outside the bacterial cells.

"This could have potential for gold extraction," says Nathan Magarvey of McMaster University in Hamilton, Ontario, who led the team that uncovered the bugs' protective trick. "You could use the bug, or the molecules they secrete."

He says the discovery could be used to dissolve gold out of water carrying it, or to design sensors that would identify gold-rich streams and rivers.

The protective chemical is a protein dubbed delftibactin A. The bugs secrete it into the surroundings when they sense gold ions, and it chemically changes the ions into particles of gold 25 to 50 nanometres across. The particles accumulate wherever the bugs grow, creating patches of gold.

Deep purple gold

But don't go scanning streams for golden shimmers: the nanoparticle patches do not reflect light in the same way as bigger chunks of the metal – giving them a deep purple colour.

When Magarvey deliberately snipped out the gene that makes delftibactin A, the bacteria died or struggled to survive exposure to gold chloride. Adding the protein to the petri dish rescued them.

The bacterium Magarvey investigated is one of two species that thrive on gold, both identified a decade or so ago by Frank Reith of the University of Adelaide in Australia. In 2009 Reith discovered that the other species, Cupriavidus metallidurans, survives using the slightly riskier strategy of changing gold ions into gold inside its cells.

"If delftibactin is selective for gold, it might be useful for gold recovery or as a biosensor," says Reith. "But how much dissolved gold is out there is difficult to say."

Journal reference: Nature Chemical Biology, DOI: 10.1038/NCHEMBIO.1179

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MPs call for ways to avoid 6.9m-strong population

SINGAPORE: Some 60 Members of Parliament (MPs) have indicated their interest to take part in the debate on the White Paper on Population.

There were several references to the much-talked-about population number, which the government is using to prepare infrastructure plans.

There were calls to find ways to avoid the need to grow Singapore's population to 6.9 million people.

Suggestions included improving work-life balance and providing more incentives for Singaporeans to have children.

Seah Kian Peng, MP for Marine Parade Group Representation Constituency said: "We do need to do more to have more citizens, not just by getting new citizens in but also by getting our people to get married. And getting our married couples to have more babies. Singaporeans ourselves can and must respond and answer to this call too.

"At the same time can we moderate the flow of immigration as we strive to grow our citizen population? Only within these figures can the notion of maintaining a strong Singapore core make sense. At the same time, we need to continually review and continually enhance the privileges of being a Singapore citizen. This must be on government's radar screen all the time."

Foo Mee Har, MP for West Coast GRC suggested: "I would like to call for urgent action to ensure a stronger Singaporean core in our population strategy. I offer two priorities for the Deputy Prime Minister's consideration so that we don't arrive at 6.9 million - Take bolder steps to improve total fertility rate, tap our own talent pool, especially amongst economically inactive women and older workers."

"There is a national anxiety and some angst, but instead of letting out this national moan about the projected population numbers, there should be a national vigour to address the vulnerabilities of Singapore," said Arthur Fong, MP for West Coast GRC.

"Perhaps then, we might look at the numbers needed with more objectivity and a renewed urgency to move forward on borrowed time. Our future rests with the three keys that the White Paper has stated, that the heart of our nation is represented by our Singaporean core. I would like to say that for a strong Singapore and a cohesive society, we need a strong heart and better yet, a big heart."

There were also concerns that augmenting the Singapore population with new citizens and permanent residents would dilute the Singaporean identity.

Christopher de Souza, MP for Holland-Bukit Timah GRC said: "Singaporeans must be the key ingredient to how Singapore is portrayed to and understood by the rest of the world. This responsibility and privilege must be accorded to Singaporeans, with PRs and residents playing a complementary role. Every few years, Singaporeans must be able to look back and say 'My life, my family's life has improved, there is a happy future for us.'"

MP for Aljunied GRC Sylvia Lim said also expressed concerns about a dilution of the Singaporean identity.

She said a strong Singaporean core must be strongly Singaporean in values, culture and sense of history, and should be made up of Singaporeans who grew up in Singapore.

The opposition MP said the Workers' Party is opposing the White Paper on Population and proposed that Singapore entertain the idea of a more modest GDP growth rate which will see a population of 5.9 million or less in 2030.

Ms Lim said this can be achieved if Singapore works towards a GDP growth of 2.5 per cent to 3.5 per cent per year up to 2020. And from 2020 to 2030, 1.5 per cent to 2.5 per cent per year.

"This trade off will mean less overcrowding, better integration of newcomers, a stronger Singaporean identity, and less stressful labour market competition. This is turn is likely to have knock-on effects on total fertility rate recovery.

"It will also not be at the expense of market competitiveness, as our economy continues to restructure, to push the proportions of Singaporeans in PMET jobs from half to two thirds. The road map proposed in the White Paper will further dilute our national identity. It will also place us on a course towards needing even larger population injections in the future, which we do not believe is sustainable."

- CNA/xq

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Five sizzling Super Bowl moments to talk about

Ray Lewis of the Baltimore Ravens celebrates after defeating the San Francisco 49ers during Super Bowl XLVII. The Ravens defeated the 49ers, 34-31.

STORY HIGHLIGHTS

• The game came down to a controversial play in the end zone


• Women with amazing vocals inspired and entertained


• Jacoby Jones scores two remarkable touchdowns


• Some commercials touched hearts, others were meh

(CNN) -- It may not have been a great game until after the lights went out and came back up, but the Super Bowl showdown Sunday night created quite a few memorable moments on the field and off, even before kickoff.

There were powerful performances, including a much buzzed-about halftime show by superstar Beyonce.

But there was also a lack of electricity in the stadium and in some of the commercials.

And San Francisco 49ers fans are sure to get emotional over that last play they ran on offense, when two players met in the end zone and despite interference, the referee did not call a penalty.

Here are the five moments you can expect your coworkers to talk about Monday morning.

Grrrl Power

The men may have duked it out during the game. But when it came to the non-football entertainment at the Superdome, women ruled the day.

First up was Jennifer Hudson with a stirring rendition of "America the Beautiful." The choir backing her comprised of students from Sandy Hook Elementary, the Connecticut school where 20 students and six school staff were shot dead in December.

Players on the sidelines and fans on the stand wiped away tears.

"Our wish is to demonstrate to America and the world that, 'We are Sandy Hook and We Choose Love,'" the choir said in a statement.

Next, Alicia Keys belted out the "Star-Spangled Banner" as the children, in white polo shirts with green ribbons pinned to them, stood with their hands on their hearts.

"It's football. But I just cried," tweeted actor Brian Baumgartner about the Sandy Hook performance.

The big show, however, came once the 49ers and the Baltimore Ravens got through the first half.

Welcome, Beyonce.

For 12 minutes, she rocked the stage clad in above-the-knee black stiletto boots and a leather minidress.

Powered by an all-female backing band, there was little doubt Beyonce sang live -- unlike during President Barack Obama's inauguration last month where she admitted singing along to a prerecorded track.

And as if that wasn't enough girl power for the night, Beyonce was joined by her Destiny's Child bandmates, Kelly Rowland and Michelle Williams.

"Watching the #SuperBowl with family & friends. @Beyonce was phenomenal! I am so proud of her! -mo," tweeted none other than the First Lady of the United States Michelle Obama.

She wasn't the only one. Beyonce's performance generated 5.5 million tweets!

Lack of power

For the first two quarters, the Ravens seemed unstoppable, steamrolling the 49ers to a 28-6 lead.

But then, half the lights in the Superdome went mysteriously black.

The NFL released a statement saying it was "investigating." The power company said it was not to blame and that electricity in the rest of the city was fine.

The outage left players, coaches and fans to wait, wait and wait some more.

Social media lit up.

After 35 minutes when the lights slowly went back on, so did San Francisco -- prompting many to wonder if the break in play played to the 49ers advantage.

Running back Frank Gore felt differently.

"You have to wait. Football is a game of adjustments. The elements don't matter," he told NFL.com. "I've been saying it all year, the elements don't matter in football. You've just got to learn how to make adjustments."

The real MVP?

Quarterbacks often get the glory in the Super Bowl, but wide receiver Jacoby Jones had a strong case for Most Valuable Player. He lost out to Joe Flacco.

Jones scored on two of the most incredible plays in Super Bowl history, including a record 108-yard kickoff return. It took him just 11 seconds on the clock to slice through the 49ers coverage team.

"Jacoby's been a blessing to this team," said Ravens coach John Harbaugh. "We're grateful to have him on this team."

Jones, who grew up in New Orleans, also caught a 56-yard touchdown pass -- his only reception. He fell, got up, decked a defender and sprinted at an angle toward the goal line, beating two 49ers into the end zone.

"Everybody dreams of scoring a touchdown in the Super Bowl. But two of 'em? That's what's up!" Jones told NOLA.com. "It was always a goal to win a Super Bowl. To come home and do it, that's the icing on the cake."

Jones is definitely the MVP for some Baltimoreans who bought furniture this weekend at a Baltimore store.

The Baltimore Sun reported Gardiners Furniture promised to wipe out the charges for anything purchased on Saturday or Sunday -- if the Ravens returned a kick for a touchdown to start a half.

Probably seemed like a good bet at the time.

Grading the ads

Some of the Super Bowl commercials -- 30 second ads that cost upward of $4 million -- made us weep for different reasons.

There were quite a few that played on our sentiment, from Budweiser's "Brotherhood" to Jeep's Oprah-narrated America Will Be Whole Again" to Dodge's ode, "Farmer."

Then there was the racy GoDaddy ad that made us want to cry, burn our eyes out and have the Men in Black wipe out our memories.

In it, model Bar Refaeli shares a long kiss with a red-cheeked "nerd" that prompted its own hashtag: #NoDaddy.

"Oh my gosh those kissing noises," tweeted Chicago college student Grace Barnes.

Bleacher Report: Grading the best & worst ads

A no-call to rue

Niners fans will tell you they were robbed of a possible win when referees failed to call a penalty.

In the final quarter, San Francisco quarterback Colin Kaepernick attempted a pass to the Niners' Michael Crabtree in the end zone.

What happened next depends on who's doing the talking.

Niners' fans will say Smith deliberately interfered with Crabtree, making it impossible to catch the ball.

Ravens' fans will say it doesn't matter, the ball was too high for Crabtree to catch.

Niners' fans will say the penalty call would have given the team a first down and a great chance to take the lead with less than two minutes left in the game.

Ravens' fans will say the ball was uncatchable -- that it sailed way over Crabtree's head.

But if you ask New England wide receiver Donte Stallworth, there should have been a penalty flag, even if the ball seemed like it was too high to catch.

"For all y'all saying that ball was uncatchable for Crabtree in the endzone... DUH!! Because dude held thee sh*t outta him..." he tweeted.

Crabtree told Yahoo Sports it was "a missed call."

"I don't want to talk about it," he said. "I don't want to think about it."

That's OK, the 49ers fans will likely do it for him.

CNN's Chelsea J. Carter contributed to this report.

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Tour bus crash kills at least 8 in California

Updated 4:15 a.m.

YUCAIPA, Calif. A tour bus collided with a car and pickup truck, killing at least eight people and injuring dozens of others Sunday night on a Southern California mountain highway, authorities said.

California Highway Patrol spokesman Mario Lopez confirmed the deaths and said 38 people were taken to hospitals with injuries.

He also said the bus driver reported having brake problems as it headed down the mountain on two-lane State Route 38, rear-ending a sedan then flipping over and hitting a pickup truck that was pulling a trailer.

The bus was carrying a tour group from Tijuana, Mexico, and a representative from the Mexican consulate was at the grim crash scene, California Department of Transportation spokeswoman Michelle Profant said.

"It's really a mess up there with body parts," Profant said.

Rescuers were still searching the wreckage for victims hours later. At least two passengers were said to be trapped, reports CBS Los Angeles station KCBS-TV.

Television footage showed the bus sitting upright but turned sideways on the road.

At least seven ambulances were called to the scene, and patients were taken to several hospitals.

Arrowhead Regional Medical Center said four women had been admitted from the crash and their conditions were still being determined. Redland Community Hospital said it received one person in critical condition and one with minor injuries, while two more were en route with minor injuries. Community Hospital of San Bernardino said it had received one patient with undetermined injuries, while St. Bernadine Medical Center said it had two patients, whose injuries were being assessed.

The purpose of the tour was not immediately clear, but Highway 38 leads to Big Bear, a popular area that's home to a ski resort and other recreational locations.

Lettering on the bus indicated that it was operated by Scapadas Magicas LLC, a company based in National City, Calif. Federal transportation records show that the company is licensed to carry passenger for interstate travel and that it had no crashes in the past two years.

A call to the company was not immediately returned.

The California crash comes less than a day after a bus carrying 42 high school students and their chaperones slammed into an overpass in Boston. Massachusetts state police said 35 people were injured and that the driver had directed the bus onto a road with a height limit.

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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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Sneaky ninja robot silently stalks its prey

MOVE over David Attenborough. A robot that moves only when it won't be seen or heard might make it easier to sneak up on animals and film them in the wild.

Defence labs have built robots that track people through cities, avoiding well-lit areas. But cities are noisy, so if a robot keeps a certain distance it's unlikely to be heard. Tracking and filming animals in the wild is tougher because they often have keen hearing and the environment is usually quieter. Matthew Dunbabin and his collaborator Ashley Tewes at the CSIRO Autonomous Systems Laboratory in Brisbane, Australia, are teaching a four-wheeled robot to move only when intermittent sounds - like bird or frog calls - will mask its movements.

In tests, the robot picked up the sounds of things like fork-lifts, cellphones and birds, and was able to predict whether they were likely to persist long enough to cover its movement. The robot can also identify its own noise, and guess how it will vary at different speeds and turning angles - calculating what this will sound like to a target up to 50 metres away.

With the help of a camera, laser scanner and the right algorithm, the robot can figure out which vantage points will provide the best cover so it can skulk in the shadows.

This article appeared in print under the headline "Sneaky ninja robot silently films its prey"

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Fiat boss eyes Chrysler merger in 2014

ROME: Fiat boss Sergio Marchionne said Sunday that he expected the merger of the Italian car giant and its US partner Chrysler will take place in 2014.

"We will succeed in doing it," he said in an interview with the editor of the Repubblica newspaper. "We and VEBA (the United Auto Workers pension fund -- a Chrysler shareholder) have different opinions on the value of Chrysler but we will resolve the problem in 2014."

Macchione, who heads both companies, had said on January 30 that the ties between the two automakers were "irreversible" and would merge "as soon as I can afford it" but did not put date on the merger.

Asked on Sunday if Fiat would keep its Turin headquarters Macchione said: "We are a big group present throughout the world, it will depend on access to financial markets and the choices of the Agnelli family" who founded Fiat.

He had "not thought" about the future name of the new entity, he said.

The deal will ultimately give Fiat a 65 per cent stake in Chrysler and full ownership by 2015.

Boosted by increased sales at Chrysler, the Italian giant on Wednesday reported a profitable 2012, announcing a fourth quarter net profit that rose to 388 million euros ($525 million) from 265 million euros the year before.

The company said it was aiming for profits of between 1.2 and 1.5 billion euros this year.

Fiat took a 20 per cent stake in Chrysler in 2009 as the third largest US automaker emerged from a government-financed restructuring under bankruptcy protection.

It has since steadily expanded its stake by purchasing shares owned by the US government and the VEBA fund.

- AFP/ck

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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.

/

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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