"17 billion" Earth-sized planets in Milky Way: study






WASHINGTON: The Milky Way contains at least 17 billion planets the size of Earth, and likely many more, according to a study out Monday that raises the chances of discovering a sister planet to ours.

Astronomers using NASA's Kepler spacecraft found that about 17 per cent of stars in our galaxy have a planet about the size of Earth in a close orbit.

The Milky Way is known to host about 100 billion stars, meaning that about one of every six has an Earth-sized planet around it.

The finding does not mean that all those planets beyond our solar system, or exoplanets, could be habitable, though it increases the chances of finding planets similar to Earth.

In order to host life, and allow water to flow in liquid form, a planet must be at a distance from its star that allows surface temperatures to be neither too hot nor too cold.

The Kepler craft detected possible exoplanets when they passed in front of their star, creating a mini-eclipse that dims the star slightly.

During the first 16 months of the survey, Kepler identified about 2,400 candidates.

Francois Fressin, of the Harvard-Smithsonian Center for Astrophysics, and his colleagues used the results to determine which signals were true and to list the exoplanets by size.

They found that 17 percent of stars have a planet 0.8 to 1.25 times the size of Earth in an orbit of 85 days or less.

About a fourth of stars have a super Earth (1.25 to twice the size of Earth) in an orbit of 150 days or less, with a same fraction having a mini Neptune (two to four times Earth) in orbits up to 250 days long.

Larger planets are a much rarer occurrence. Only about three percent of stars have a large Neptune (four to six times Earth) and only five percent have a gas giant (six to 22 times Earth) in an orbit of 400 days or less.

The researchers presented the analysis at a meeting of the American Astronomical Society in Long Beach, California.

Separately, NASA's Kepler mission announced it had discovered 461 new possible planets.

Four of them are less than twice the size of Earth and orbit their sun's "habitable zone," where liquid water might exist on the planet's surface and thus make life possible.

The findings, based on observations conducted from May 2009 to March 2011, showed the number of smaller-size planet candidates and the number of stars with more than one candidate steadily rising.

-AFP/ac



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Marijuana use is too risky a choice







STORY HIGHLIGHTS


  • David Frum: Casual use of marijuana shouldn't be a reason to lock people up

  • He says there are serious risks to brain development, mental health in using marijuana

  • Frum says it's better to send simple message that marijuana is illegal

  • He says too often social rules become so complex many people can't navigate them




Editor's note: David Frum, a CNN contributor, is a contributing editor at Newsweek and The Daily Beast. He is the author of eight books, including a new novel, "Patriots," and his post-election e-book, "Why Romney Lost." Frum was a special assistant to President George W. Bush from 2001 to 2002.


(CNN) -- Last week, I joined the board of a new organization to oppose marijuana legalization: Smart Approaches to Marijuana. The group is headed by former U.S. Rep. Patrick Kennedy and includes Kevin Sabet, a veteran of the Office of National Drug Control Policy under President Obama.


The new group rejects the "war on drugs" model. It agrees that we don't want to lock people up for casual marijuana use -- or even stigmatize them with an arrest record. But what we do want to do is send a clear message: Marijuana use is a bad choice.



David Frum

David Frum



There are many excellent reasons to avoid marijuana. Marijuana use damages brain development in young people. Heavy users become socially isolated and perform worse in school and at work. Marijuana smoke harms the lungs. A growing body of evidence suggests that marijuana can trigger psychotic symptoms that otherwise would have remained latent.


It's possible to imagine a marijuana rule that tries to respond precisely to such risk factors as happen to be known by the current state of science. Such a rule might say: "You shouldn't use marijuana until you are over 25, or after your brain has ceased to develop, whichever comes first. You shouldn't use marijuana if you are predisposed to certain mental illnesses (most of which we can't yet diagnose in advance). Be aware that about one-sixth of users will become chronically dependent on marijuana, and as a result will suffer a serious degradation of life outcomes. As yet, we have no sure idea at what dosage marijuana will impair your ability to drive safely, or how long the impairment will last. Be as careful as you can, within the limits of our present knowledge!"


Yet as a parent of three, two exiting adolescence and one entering, I've found that the argument that makes the biggest impression is: "Marijuana is illegal. Stay away." I think many other parents have found the same thing.


When we write social rules, we always need to consider: Who are we writing rules for? Some people can cope with complexity. Others need clarity. Some people will snap back from an early mistake. Others will never recover.



"Just say no" is an easy rule to follow. "It depends on individual risk factors, many of them unknowable in advance" -- that rule is not so easy.


Richard Branson: War on drugs a trillion-dollar failure


Over the past three decades, and in area after area of social life, Americans have replaced simple rules that anybody can follow with complex rules that baffle large numbers of people.


Consider, for example, the home mortgage. Once the mortgage was a very simple product. Put 20% down, then sign up for a fixed schedule of payments over the next 30 years. In the space of a single generation, these 30-year fixed-rate amortizing mortgages turned what had been a nation of renters into a nation of homeowners.



The goal of public policy should be to protect ... the vulnerable from making life-wrecking mistakes in the first place.



For more sophisticated buyers, however, the standard mortgage was a big nuisance. For them, bankers developed more flexible products: no money down, no documentation, interest-only, adjustable rate. These products met genuine needs. But as they diffused down-market, they became traps for people who did not understand the risks they were accepting.


Consider how we finance higher education. Once, state governments subsidized their universities to offer a low tuition fee to all comers. Fee increases at private universities were constrained by the lower fees at the public institutions: Duke can raise its price only so high above the University of North Carolina. The universities soon realized, however, that by setting their tuition fees low, they were forgoing revenues that might be collected from the most affluent students. Universities rapidly raised their tuition fees, then offered discounts and aid to students in need.


Kevin Sabet: Legalize Pot? No, reform laws


But while anybody could understand a $500 per semester tuition bill, the new system of rebates confuses the very people who most need help.


A few days before Christmas, Jason DeParle of The New York Times reported a depressing example of the toll modern financial aid exacts upon students from less sophisticated backgrounds. He told the story of three bright girls from poor families who had recently tried -- and failed -- to gain college degrees. One of them was admitted to Emory, a prestigious school with a full-ticket price of $50,000, but one that grants very generous financial aid -- if the student can figure out how to make the financial aid work for her.










The trouble was that students who most need aid are often precisely those who have nobody around them who has ever successfully navigated a complicated bureaucratic institution like a university financial aid office.


"Though Emory sent weekly e-mails -- 17 of them, along with an invitation to a program for minority students -- they went to a school account she had not learned to check," DeParle wrote.


"Angelica reported that her mother made $35,000 a year and paid about half of that in rent. With her housing costs so high, Emory assumed the family had extra money and assigned ... an income of $51,000. ... (Angelica) discovered what had happened only recently."


Unable to cope with the school's e-mail system or to decrypt its rules for imputing family income, Angelica finally dropped out of Emory, burdened by $61,000 in student debt.


In 1943, Vice President Henry Wallace published a book celebrating the coming "century of the common man." That century did not last very long. We have transitioned instead into the era of the clever man and clever woman. We have revised our institutions, our programs, our rules in ways that offer profitable new chances to those with cultural know-how -- and that inflict disastrous consequences on those who are overwhelmed by a world of ever-more-abundant and ever-more-risky choices.


Opinion: The end of the war on marijuana


We're not going to uninvent the no-money-down loan. Universities that receive applications from all over the planet cannot finance themselves like an old-fashioned state land-grant college. But we need to recognize that modern life is becoming steadily more dangerous for people prone to make bad choices.


At a time when they need more help than ever to climb the ladder, marijuana legalization kicks them back down the ladder. The goal of public policy should not be to punish vulnerable kids for making life-wrecking mistakes. The goal of public policy should be to protect (to the extent we can) the vulnerable from making life-wrecking mistakes in the first place.


There's a trade-off, yes, and it takes the form of denying less vulnerable people easy access to a pleasure they believe they can safely use. But they are likely deluding themselves about how well they are managing their drug use. And even if they are not deluded -- if they really are so capable and effective -- then surely they can see that society has already been massively re-engineered for their benefit already. Surely, enough is enough?


Follow @CNNOpinion on Twitter.


Join us at Facebook/CNNOpinion.


The opinions expressed in this commentary are solely those of David Frum.






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Millions of foreclosure abuse victims to get checks

(CBS News) LOS ANGELES - Since the real estate implosion five years ago, major banks have been accused of fraudulent tactics to foreclose on thousands of Americans.

On Monday, the U.S. government reached a settlement with 10 banks who will pay $8.5 billion. About four million homeowners who lost their homes to foreclosure will be getting some compensation.

About 200 people showed up to a workshop in south Los Angeles last month trying to figure out if their banks improperly foreclosed on their homes. Now many of them will be getting a check.

10 banks agree to pay $8.5B for foreclosure abuse
Consumer advocates question $8.5B foreclosure deal

The 10 banks -- including Citi, JPMorgan Chase, Bank of America, and Wells Fargo -- will make $3.3 billion in direct payments to customers who were in foreclosure during 2009 and 2010.

Homeowners charged improper fees could be paid a couple hundred dollars. About $125,000 would go to homeowners who were foreclosed on even though they were up to date in their mortgage payments.

The settlement replaces an existing independent foreclosure review program that began in 2011 after it was discovered many banks approved foreclosure without actually reviewing the cases, sometimes hundreds a day.


Tunua Thrash

Tunua Thrash


/

CBS News

Tunua Thrash helps homeowners in Los Angeles navigate foreclosure. She worries the bank payouts won't go far enough.

"Certainly the fact that there have been many mistakes, and some homeowners have lost equity that could exceed that amount, is letting the banks off easy...as far making sure that homeowners are made whole," Thrash said.

The banks will also spend $5.2 billion on loan modifications and principal reductions for current homeowners. That may help James Bruce, who could lose his south L.A. home at the end of the month unless Citibank modifies his adjustable rate mortgage, which he can no longer afford.

"It started adjusting on me and it just got overbearing and I couldn't take it, so it just ate up all my savings and everything that I could muster up to pay that mortgage for over a year," Bruce said.

About 3.8 million people will be getting some payment from these 10 banks. Even homeowners whose foreclosures were processed properly will get something because the banks have decided it's simply easier to write a check than try to figure out who was actually harmed.

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Colo. Suspect Bought Ticket 12 Days Before Shooting













Accused Aurora movie theater gunman James Holmes bought his movie ticket 12 days before the shooting, it was revealed in court today during the emotional first day of a preliminary hearing.


Aurora Police Department homicide detective Matthew Ingui testified that there is no video surveillance of the actual shooting, but there are several photos of Holmes checking into the theater kiosk with his cellphone. He scanned his phone three times.


Surveillance footage shown in court for the first time also showed Holmes lingering by the concession stand for about three minutes before entering theater nine dressed in dark pants, a light colored shirt and a skull cap. He would later be caught wearing a bullet proof vest and a gas mask.


Another video showed the lobby the moment theater staff heard shots ring out. Some of them ducked behind counters as people started streaming out of the front door.


Ingui also testified about the positions of the bodies in the theater, strewn across seats and aisles.


Click here for full coverage of the Aurora movie theater shooting.


Holmes is accused of killing 12 people and wounding dozens more in the movie theater massacre.


Earlier in the day, two veteran police officers broke down on the stand, with one officer choking up when he described finding the body of a 6-year-old girl inside the theater.


Sgt. Gerald Jonsgaard needed a moment to compose himself as he described finding the little girl, Veronica Moser Sullivan, in the blood splattered theater.








Police Testify at Hearing for Accused Colorado Gunman Watch Video









James Holmes Tries to Harm Himself, Sources Say Watch Video









Aurora, Colorado Gunman: Neuroscience PhD Student Watch Video





An officer felt for a pulse and thought Veronica was still alive, Jonsgaard said, but the officer then realized he was feeling his own pulse.


The officers wiped away tears as they described the horror they found inside of theater nine.


Officer Justin Grizzle recounted seeing bodies lying motionless on the floor, surrounded by so much blood he nearly slipped and fell.


Grizzle, a former paramedic, says ambulances had not yet made it to the theater, so he began loading victims into his patrol car and driving to the hospital.


"I knew I needed to get them to the hospital now, " Grizzle said, tearing up. "I didn't want anyone else to die."


Grizzle drove six victims in four trips, saying that by the end there was so much blood in his patrol car he could hear it "sloshing around."


An officer who took the stand earlier today described Holmes as "relaxed" and "detached" when police confronted him just moments after the shooting stopped.


The first two officers to testify today described responding to the theater and spotting Holmes standing by his car at the rear of the theater on July 20, 2012. He allegedly opened fire in the crowded theater during the midnight showing of "The Dark Knight Rises."


Officer Jason Oviatt said he first thought Holmes was a cop because he was wearing a gas mask and helmet, but as he got closer realized he was not an officer and held Holmes at gunpoint.


Throughout the search and arrest, Holmes was extremely compliant, the officer said.


"He was very, very relaxed," Oviatt said. "These were not normal reactions to anything. He seemed very detached from it all."


Oviatt said Holmes had extremely dilated pupils and smelled badly when he was arrested.


Officer Aaron Blue testified that Holmes volunteered that he had four guns and that there were "improvised explosive devices" in his apartment and that they would go off if the police triggered them.


Holmes was dressed for the court hearing in a red jumpsuit and has brown hair and a full beard. He did not show any reaction when the officers pointed him out in the courtroom.


This is the most important court hearing in the case so far, essentially a mini-trial as prosecutors present witness testimony and evidence -- some never before heard -- to outline their case against the former neuroscience student.


The hearing at the Arapahoe County District Court could last all week. At the end, Judge William Sylvester will decide whether the case will go to trial.






Read More..

Silent Skype calls can hide secret messages









































Got a secret message to send? Say it with silence. A new technique can embed secret data during a phone call on Skype. "There are concerns that Skype calls can be intercepted and analysed," says Wojciech Mazurczyk at the Institute of Telecommunications in Warsaw, Poland. So his team's SkypeHide system lets users hide extra, non-chat messages during a call.












Mazurczyk and his colleagues Maciej Karaś and Krysztof Szczypiorski analysed Skype data traffic during calls and discovered an opportunity in the way Skype "transmits" silence. Rather than send no data between spoken words, Skype sends 70-bit-long data packets instead of the 130-bit ones that carry speech.












The team hijacks these silence packets, injecting encrypted message data into some of them. The Skype receiver simply ignores the secret-message data, but it can nevertheless be decoded at the other end, the team has found. "The secret data is indistinguishable from silence-period traffic, so detection of SkypeHide is very difficult," says Mazurczyk. They found they could transmit secret text, audio or video during Skype calls at a rate of almost 1 kilobit per second alongside phone calls.












The team aims to present SkypeHide at a steganography conference in Montpellier, France, in June.


















































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








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British tourist plunges to death off Australia waterfall






SYDNEY: Police on Monday were attempting to retrieve the body of a British tourist who slipped over the edge of a waterfall in Australia's Blue Mountains and plunged to his death.

The 20-year-old man was walking with friends at Wentworth Falls, west of Sydney, on Sunday afternoon when he lost his footing and fell some 80 metres (260 feet).

Police said a friend summoned help and while paramedics were able to establish that he was dead, their helicopter crew was unable to retrieve the body due to high winds.

A guard was placed at the scene overnight and officers walked into the bushland Monday morning to help winch him out.

A witness told state broadcaster ABC she had seen a group of friends gathered on some rocks.

"Then they went down to the next one and I knew something was going to happen," she said.

"We just saw them all panic and a 20-year-old boy fell over, down the waterfall."

The Blue Mountains are a popular tourist attraction some 60 kilometres (40 miles) west of Sydney. Consisting mainly of a sandstone plateau, the area is dissected by gorges up to 760 metres deep.

-AFP/ac



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NHL, players reach tentative agreement









From Maria P. White and Josh Levs, CNN


updated 1:11 PM EST, Sun January 6, 2013







Mike Brown of the Toronto Maple Leafs strips the puck from Nicklas Lidstrom of the Detroit Red Wings during a game last January.




STORY HIGHLIGHTS


  • NEW: Games could resume "hopefully, within a few days," Fehr says

  • Fans react with a mix of frustration and excitement

  • The two sides reach an agreement after a marathon negotiating session

  • If approved, the agreement would end a three-month lockout




(CNN) -- The National Hockey League and the NHL Players' Association struck a tentative agreement early Sunday that may end a three-month lockout of unionized players, league and union officials announced.


NHL Commissioner Gary Bettman said the "basic framework" of a deal had been agreed upon after a 16-hour negotiating session at a Manhattan hotel. The details must be approved by both the players and the league's governing board, Bettman told reporters in a predawn news conference, and he said it was too early to provide details about what it might mean for a shortened hockey season.


But players' union chief Donald Fehr said he expected those steps to follow "fairly rapidly and with some dispatch."


Breaking down the new deal


"Hopefully, within a very few days, the fans can get back to watching people who are skating and not the two of us," Fehr said.


Sunday's deal could salvage the second half of the season and the Stanley Cup playoffs.


The NHL scrapped its preseason and all games through the end of 2012 after its contract with the players expired on September 15, with no agreement between the two sides. There were 526 games, nearly 43% of the season, scheduled from the start of the regular season on October 11 through December 30, the NHL said.


A similar labor dispute canceled the entire 2004-05 NHL season. Bettman has said any abbreviated regular season should probably have a minimum of 48 games per team.


Some players had a "crucial role in the final stages" of reaching the agreement, the union said. "Players in the room early Sunday for the announcement were: Craig Adams, Chris Campoli, Mathieu Darche, Shane Doan, Andrew Ference, Ron Hainsey, Jamal Mayers and George Parros," the players association said.


Sports Illustrated has tracked the intricacies of the talks and flashpoint issues, and argued that the NHL is "in dire need" of a new way of handling labor relations.


Initial reactions shared with CNN on social media were mixed.


"They waited too long. I think they're gonna take a well-deserved hit from hockey fans," HBobbie McLeod wrote on Facebook.


But some fans expressed excitement.


"Now time to see the LAKings raise their banner! #Finally," wrote Lisa, a self-described former hockey fan, on Twitter. But, she added, "after being a fan for 23 years through 4 lockouts, enough is enough."


What do you think? Post comments below or weigh in at Facebook or Twitter.








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NFL Playoffs: Seahawks beat Redskins 24-14

Marshawn Lynch #24 of the Seattle Seahawks scores a fourth quarter touchdown against the defense of Lorenzo Alexander #97 of the Washington Redskins during the NFC Wild Card Playoff Game at FedExField on January 6, 2013 in Landover, Maryland. / Al Bello/Getty Images

LANDOVER, Md. The Seattle Seahawks finally won a road playoff game Sunday, taking a 24-14 NFC wild-card victory over the Washington Redskins, who lost Robert Griffin III to another knee injury in the fourth quarter.

Marshawn Lynch ran for 131 yards, and Russell Wilson completed 15 of 26 passes for 187 yards and ran eight times for 67 yards for the Seahawks, who broke an eight-game postseason losing streak away from home.




24 Photos


NFL Week 18: Playoff highlights



Seattle will visit the top-seeded Atlanta Falcons next Sunday.

Lynch's 27-yard run with 7:08 remaining gave the Seahawks (12-5) the lead. On Washington's next series, Griffin reinjured the right knee he sprained about a month ago while trying to field a bad shotgun snap.

The knee buckled badly, and the Seahawks recovered the fumble and kicked an insurance field goal.

Kirk Cousins replaced Griffin, but Washington (10-7) was unable to come back.

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Hagel to Be Obama's Defense Secretary Nominee


Jan 6, 2013 4:52pm







gty chuck hagel kb 121220 wblog Obama Will Nominate Chuck Hagel as Next Defense Secretary

(Junko Kimura/Getty Images)


WASHINGTON, D.C. — President Obama will nominate former senator Chuck Hagel to be his next Secretary of Defense tomorrow.


Senior officials within the administration and Capitol Hill confirmed the pick to ABC News today after the Nebraska Republican had emerged as a frontrunner among potential candidates several weeks ago.


Hagel, 66, is a decorated Vietnam veteran and businessman who served in the senate from 1997 to 2009. After having sat on that chamber’s Foreign Relations and Intelligence Committees,  he has in recent years gathered praise from current and former diplomats for his work on Obama’s Intelligence Advisory Board as well as the policy board of the current Defense Secretary Leon Panetta.


But the former lawmaker faces an upscale battle in the coming confirmation hearings in Congress; critics on both sides of the aisle have taken aim at his record toward Israel and what some have called a lack of experience necessary to lead the sprawling Pentagon bureaucracy or its operations.


Progressives have also expressed concern about comments he made in 1998, questioning whether an “openly, aggressively gay” James Hormel could be nominated to an ambassador position by then-President Clinton. Hagel apologized for the comments last month, adding that he also supported gays in the military – a position he once opposed.


Who Is Chuck Hagel? Meet Obama’s Top Pentagon Pick


The friction with his former colleagues has left a degree of uncertainty in the air going into the hearings. Today on ABC’s “This Week,” Senate Republican Leader Mitch McConnell demurred when asked whether he would support the man who, in 2008, he had championed for his candidness and stature in foreign policy.


“I’m going to wait and see how the hearings go and see whether Chuck’s views square with the job he would be nominated to do,” he told George Stephanopoulos.


Senator Lindsey Graham was more blunt in his opposition to Hagel on CNN. The Georgia Republican called Hagel an “in your face nomination,” and said he “would be the most antagonistic secretary of defense towards the state of Israel in our nation’s history.”


If confirmed, Hagel will join a crop of new cabinet members expected to join the president in his second term, including Sen. John Kerry, D-Mass., who was nominated in December to replace Hillary Clinton as Secretary of State.


ABC’s Elizabeth Hartfield and Devin Dwyer contributed reporting.



SHOWS: Good Morning America This Week World News







Read More..

Silent Skype calls can hide secret messages









































Got a secret message to send? Say it with silence. A new technique can embed secret data during a phone call on Skype. "There are concerns that Skype calls can be intercepted and analysed," says Wojciech Mazurczyk at the Institute of Telecommunications in Warsaw, Poland. So his team's SkypeHide system lets users hide extra, non-chat messages during a call.












Mazurczyk and his colleagues Maciej Karaś and Krysztof Szczypiorski analysed Skype data traffic during calls and discovered an opportunity in the way Skype "transmits" silence. Rather than send no data between spoken words, Skype sends 70-bit-long data packets instead of the 130-bit ones that carry speech.












The team hijacks these silence packets, injecting encrypted message data into some of them. The Skype receiver simply ignores the secret-message data, but it can nevertheless be decoded at the other end, the team has found. "The secret data is indistinguishable from silence-period traffic, so detection of SkypeHide is very difficult," says Mazurczyk. They found they could transmit secret text, audio or video during Skype calls at a rate of almost 1 kilobit per second alongside phone calls.












The team aims to present SkypeHide at a steganography conference in Montpellier, France, in June.


















































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.








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