Space Junk Menace: How to Deal with Orbital Debris






The saga of what steps that must be taken to deal with the evolving threat of Earth-circling orbital debris is a work in progress.  This menacing problem — and the possible cleanup solutions — is international in scope.


Space junk is an assortment of objects in Earth orbit that is a mix of everything from spent rocket stages, derelict satellites, chunks of busted up spacecraft to paint chips, springs and bolts. A satellite crash in February 2009, for example, marked the first accidental hypervelocity crash between two intact artificial satellites in Earth orbit. That cosmic crash created significant debris — a worrisome amount of leftover bits and pieces.






Against this backdrop of untidiness in space and the global worry among spacefaring countries it causes, experts continue to tackle the issue of exactly what to do about orbital debris. A number of rules have been pondered to address the space debris problem, from regulations that attempt to cut down on the shedding of new debris to better tracking of the human-made refuge, as well as scavenging concepts including fishing nets, lasers and garbage scows.


But how to best characterize the orbital debris dilemma, and its future, also stirs up debate and heated dialogue.


Point of no return


The clutter in Earth orbit is a situation that will continue to worsen, according to Marshall Kaplan, founder and principal of Launchspace in Bethesda, Md.


“The problem is that we’ve already fallen off that cliff,” Kaplan told SPACE.com. “That’s the reality of it and people don’t want to admit that reality.” [Photos of Space Junk & Cleanup Ideas]


Spending millions of dollars to retrieve space junk isn’t effective, Kaplan said.


Now, ways to better track and identify space debris are being devised. Low-Earth orbit is where the main problem is — from roughly 435 miles (700 kilometers) to about 745 miles (1,200 km), he said.


“It’s a serious, serious challenge,” Kaplan said. “This is not a U.S. problem … it’s everybody’s problem. And most of the people that produced the debris, the serious offenders, like Russia, China, and the United States, are not going to spend that kind of money. It’s just not a good investment.”


While the creation of orbiting junk continues rise with each rocket launch, there is no market for tackling the issue directly, Kaplan said.


“We’ve reached the point of no return. The debris will continue to get worse in terms of collision threats … even if not another satellite were launched, the problem will continue to get worse,” he added.


Speeding debris crashes


Kaplan said the frequency of collisions between active satellites and debris pieces is going to increase.


The real question, Kaplan said, is not what everyone is going to do about debris. Rather, the true question is what needs to be done about active satellites in harm’s way of speeding riffraff.


“My prediction is that we are going to evacuate the areas of high debris density. It’s just too dangerous to operate there. We’re going to need to reinvent how we use space,” Kaplan said. [Worst Space Debris Events of All Time]


In the case of large national security satellite assets, one option may be to distribute smaller satellites in lower altitudes, Kaplan added. These multiple layers of spacecraft would collectively create virtual products, such as imagery and other intelligence data. The users of this information would receive the same kind of data, but from a different satellite constellation, he said.


As one step toward that future, Kaplan is working with multiple universities to help establish new research centers on space debris and a next-generation national security space architecture.


Environmental stability


Darren McKnight, technical director for Integrity Applications Incorporated, headquartered in Chantilly, Va., suggested that the current debate on active debris removal and the evolution of the debris environment is still developing.


McKnight said that, currently, policymakers and engineers examine environmental stability, preventing the cascading of derelict collisions from increasing exponentially over the next century. This scenario, known as the “Kessler Syndrome,” is the primary metric to judge how many derelicts need to be removed and when they should be removed.


The Kessler Syndrome is one in which the density of objects in low Earth orbit is high enough that collisions between objects could cause a cascade. Each collision generates space debris, which increases the likelihood of further collisions. [Solar Sails Could Sweep Up Space Junk (Video)]


“The overall issue is that as we continue to consider active debris removal options, I question whether or not environment stability is the only metric to be tracking,” McKnight told SPACE.com.


Lethal space debris


McKnight, along with company colleague Frank Di Pentino, propose that the probability of satellite failure from impact from non-trackable, yet lethal debris fragments — in the 5 millimeter to 10 centimeter size range — is a more appropriate metric. The reason is because it directly reflects harmful effects of space debris on space operations. Furthermore, these effects are likely to occur much sooner than observable manifestations of the cascading effect.


McKnight and Di Pentino’s research suggests that any mitigation scheme, be it just-in-time collision avoidance, active debris removal or other methods, cannot rely on a model that does not account for projected add rates, new launches on other factors. They contend that collision rate is “not a sufficient metric” for assessing operational risk.


Wanted: A long-term plan


There is much work to do regarding orbital debris, said Donald Kessler, chair of the 2011 National Research Council (NRC) report “Limiting Future Collision Risk to Spacecraft: An Assessment of NASA’s Meteoroid and Orbital Debris Programs.” He is a retired head of NASA’s Orbital Debris Program Office and is a space debris and meteoroid consultant in Asheville, N.C.


Kessler said that the NRC committee that produced the report strongly felt that what was missing from the programs was a long-term strategic plan — one that outlined a path that eventually determines how  manage future space operations in a way that preserves the environment.


“However, this is not simply a NASA issue … it is an international issue, and will require a carefully coordinated effort,” Kessler said.


Can the space junk problem be solved?


NASA and the international community, Kessler said, “have already done enough research to know that the environment will continue to get worse if we continue on the same path … the only environmental issue to be resolved is how quickly the environment in various regions deteriorates.”


The international community, through the Inter-Agency Space Debris Coordination Committee (IADC), has been very active in understanding the current environmental trends, sharing information and establishing internationally recognized mitigation requirements.


However, Kessler said that current mitigation practices are insufficient, even with 100 percent compliance. Missing in action is a plan to determine what do about the predicted worsening space environment, he said — that is, how to stop or reverse the trend of increased debris resulting from increased collisions.


Sustainable environment


Kessler added that the fundamental issues to be resolved are:


  • How do we minimize the possibility of future high-velocity collisions between spacecraft and upper stage rockets?

  • If we cannot eliminate that prospect, how do we clean up after a collision?

“Removal from orbit, collision avoidance, satellite servicing and repair, satellite recycling in orbit, debris storage locations, change to using a ‘stable plane’ at higher altitudes especially in Geosynchronous Earth Orbit (GEO) … are all possibilities,” Kessler added. “Some are mutually exclusive and may not be appropriate at all altitudes, while others could combine to be more effective.”


Still to be sorted out is what type of legal structure might be needed in order to implement any plan, Kessler said.


“I believe it is time that the international community takes a serious look at the future of space operations,” Kessler said. “There’s need to begin a process to answer these questions and determine which path will most effectively provide a sustainable environment for spacecraft in Earth orbit.”


Leonard David has been reporting on the space industry for more than five decades. He is former director of research for the National Commission on Space and a past editor-in-chief of the National Space Society’s Ad Astra and Space World magazines. He has written for SPACE.com since 1999.


Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
Space and Astronomy News Headlines – Yahoo! News





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Why haven't we learned from fires?






STORY HIGHLIGHTS


  • Pyrotechnics, overcrowding, poor exits have contributed to tragic fires in recent years

  • You would think the world would have learned from past incidents, John Barylick says

  • Concertgoers have to be their own fire marshals, he says




Editor's note: John Barylick, author of "Killer Show," a book on the 2003 Station nightclub fire in Rhode Island, is an attorney who represented victims in wrongful death and personal injury cases arising from the fire.


(CNN) -- Sunday morning we awoke to breaking news of another tragic nightclub fire, this time in Brazil. At last report the death toll exceeded 230.


This tragedy is not without precedent. Next month will mark the 10th anniversary of a similar nightclub fire in Rhode Island. At this sad time, it's appropriate to reflect on what we've learned from club fires -- and what we haven't.


Rhode Island's Station nightclub fire of 2003, in which 100 concertgoers lost their lives, began when fireworks set off by Great White, an 80s heavy metal band, ignited flammable packing foam on the club's walls.



John Barylick

John Barylick



Panicked patrons stampeded toward the club's main exit, and a fatal pileup ensued. Contributing to the tragedy were illegal use of pyrotechnics, overcrowding and a wall covering that would have failed even the most rudimentary flammability tests.


Video images of the Station fire were broadcast worldwide: A concert begins; the crowd's mood changes from merry, to curious, to concerned, to horrified -- in less than a minute. You'd think the world would have learned from it. You would be wrong.


Deadly blazes: Nightclub tragedies in recent history



The following year, the Republica Cromanon nightclub in Argentina went up in flames, killing 194 people. The club was made to hold about 1,000 people, but it was estimated that more than 3,000 fans were packed inside the night of the fire, which began when fans began lighting flares that caught the roof on fire.


Then, in January 2009, at least 64 New Year's revelers lost their lives in a nightclub in Bangkok, Thailand, after fire ignited its ceiling. Many were crushed in a rush to get out of the club. In December of that same year, a fire in a Russian nightclub, ignited by pyrotechnics, killed 156 people. Overcrowding, poor exits, and indoor fireworks all played roles in these tragedies; yet no one bothered to learn from mistakes of the past.


While responsibility for concert disasters unquestionably lies with venue operators, performers and promoters, ultimately, we, as patrons of clubs and concerts, can enhance our own safety by taking a few simple steps. The National Fire Protection Association urges concertgoers to:






• Be observant. Is the concert venue rundown or well-maintained? Does the staff look well-trained?


• As you proceed to your seat, observe how long the process takes. Could you reverse it in a hurry? Do you pass through pinch points? Is furniture in the way?


• Once seated, take note of the nearest exit. (In an emergency, most people try to exit by the door they entered, which is usually not the closest, and is always overcrowded.) Then, share the location of that nearest exit with your entire party. Agree that at the first sign of trouble, you will all proceed to it without delay.


• Once the show begins, remain vigilant. If you think there's a problem, LEAVE IMMEDIATELY. Do not stay to "get your money's worth" despite concerns about safety. Do not remain to locate that jacket or bag you placed somewhere. No concert is worth your life. Better to read about an incident the next day than be counted as one of its statistics.


Read more: How to protect yourself in a crowd


To be sure, all fire codes must be vigorously enforced, and club and concert hall operators must be held to the highest standards. A first step is banning indoor pyrotechnics in all but the largest, stadium-type venues.


But, ultimately, we are our own best "fire marshals" when it comes to avoiding, and escaping, dangerous situations. We can still enjoy shows. But it is up to us to look out for our own safety.


In coming days, Rhode Islanders will follow the unfolding news from Brazil with a sense of queasy deja vu -- the rising body counts, the victim identification process, the grieving families, and the assigning (and dodging) of blame. If only they had learned from our tragedy.


The opinions expressed in this commentary are solely those of John Barylick.







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2 dead after apparent carbon monoxide leak in W. Rogers Park









Two women are dead and another hospitalized after an apparent carbon monoxide leak in a West Rogers Park building, officials said.


Paramedics were first called about 10:30 a.m. to the building in the 2500 block of West North Shore Avenue to transport one woman to the hospital, Chicago Fire Department spokeswoman Meg Ahlheim said.


The woman was taken in cardiac arrest to Swedish Covenant Hospital, Ahlheim said.





Fire officials at the scene called for a second ambulance, and another woman was taken to Swedish Covenant as well, Ahlheim said.


Both women died at the hospital.


Rasheeda Akhter, 77, was pronounced dead at 11:14 a.m., according to the Cook County medical examiner's office. The second victim, 18-year-old Zanib Ahmed, died at 9 p.m., according to the medical examiner's office.


Back at the building, fire officials checked the carbon monoxide levels but found no indication of a leak, Ahlheim said.


Paramedics were called back to the scene, however, about 3:45 p.m. for another woman found unresponsive. She was taken to St. Francis Hospital in Evanston in critical condition, Ahlheim said.


Officials checked carbon monoxide levels again, and while the meter readings in residential units did not indicate a leak, officials found a positive reading for a low level of carbon monoxide near a boiler in the basement, Ahlheim said.


Police suspect the deaths were caused by accidental carbon monoxide poisoning, but no official determination will be made until autopsy results are reported, Police News Affairs Officer Amina Greer said.


A spokeswoman for Peoples Gas, Jennifer Block, said representatives from the company were called to the building to assist police and fire officials. She referred further questions to the police and fire departments.


asege@tribune.com


Twitter: @AdamSege






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Egypt's Mursi declares emergency after clashes kill dozens


CAIRO (Reuters) - Egyptian President Mohamed Mursi declared a month-long state of emergency in three cities on the Suez Canal, where dozens of people have been killed in protests that have swept the nation and deepened a political crisis facing the Islamist leader.


Hundreds of demonstrators in Port Said, Suez and Ismailia turned out against the decision within moments of Mursi's announcement late on Sunday, which came after the death toll from protests and violence that erupted last week hit 49.


Mursi also called for a national dialogue with his rivals for later on Monday, but the early response from members of the main opposition coalition suggested they saw little point, saying the president only seemed to listen to his allies.


Most deaths have been in Port Said, where 40 were killed in just two days. Riots were sparked on Saturday when a court sentenced to death several people from the city on charges related to deadly rioting at a soccer match last year. Mourners at Sunday's funerals in the port, where guns are common, directed their anger at Mursi.


Violence in Egypt's cities has extended to a fifth day. Police fired volleys of teargas at dozens of youths hurling stones on Monday near Cairo's Tahrir Square, where opponents have camped for weeks to protest against Mursi, who they say betrayed the revolution that ousted Hosni Mubarak two years ago.


"We want to bring down the regime and end the state that is run by the Muslim Brotherhood," said Ibrahim Eissa, a 26-year-old cook, protecting his face from teargas wafting towards him from police lines near Tahrir, the cauldron of the 2011 revolt.


Propelled to power in a June election by the Brotherhood, Mursi's presidency has lurched through a series of political crises and violent demonstrations, compounding his task of shoring up a teetering economy and preparing for a parliamentary election to cement the new democracy in a few months.


"The protection of the nation is the responsibility of everyone. We will confront any threat to its security with force and firmness within the remit of the law," Mursi said, offering condolences to families of victims in the canal zone cities.


"WASTE OF TIME"


Appealing to his opponents, the president called for a national dialogue on Monday at 6 p.m. (1600 GMT), inviting a range of Islamist allies as well as liberal, leftist and other opposition groups and individuals to discuss the crisis.


The main opposition National Salvation Front coalition gathered in Cairo to discuss a response, but several members have already suggested they do not expect much from the meeting, raising the prospect of poor attendance.


"Unless the president takes responsibility for the bloody events and pledges to form a government of national salvation and a balanced committee to amend the constitution, any dialogue will be a waste of time," Mohamed ElBaradei, a prominent politician who founded the Constitution Party, wrote on Twitter.


Hamdeen Sabahy, a leftist politician and presidential candidate who is another leading member of the Front, said he would not attend Monday's meeting "unless the bloodshed stops and the people's demands are met".


Ahmed Said of the liberal Free Egyptians Party said Mursi's tone on Sunday night was more threatening than conciliatory. "Egypt is in danger and completely split," he told Reuters.


Egypt's politics has become deeply polarized. Although Islamists have swept to victory in a parliamentary poll and presidential vote, the disparate opposition has been united by Mursi's bid late last year to expand his powers and fast-track a constitution with an Islamist hue through a referendum.


Mursi's opponents accuse him of listening only to his Islamist friends and reneging on a pledge to be a president for all Egyptians. Islamists say their rivals want to overthrow by undemocratic means Egypt's first freely elected leader.


The Front has distanced itself from the latest flare-ups but said Mursi should have acted far sooner to impose extra security measures that would have ended the violence.


BLAMING MURSI


"Of course we feel the president is missing the real problem on the ground, which is his own policies," spokesman Khaled Dawoud said. "His call to implement emergency law was an expected move, given what is going on, namely thuggery and criminal actions."


Even in Tahrir, some protesters said violence and the high death toll in Port Said and other cities on the strategic Suez waterway meant there was little choice but to impose emergency law, although they, too, blamed Mursi for fury on the streets.


"They needed the state of emergency there because there is so much anger," said Mohamed Ahmed, 27, a protester walking briskly from a cloud of teargas spreading into Tahrir Square.


However, activists in the three cities affected have pledged to defy the curfew that will start at 9 p.m. (1900 GMT) each evening and last until 6 a.m. (0400 GMT).


Some opposition groups have also called for more protests on Monday, which marks the second anniversary of one of the bloodiest days in the revolution that erupted on January 25, 2011, and brought an end to Mubarak's iron rule 18 days later.


Rights activists said Mursi's declaration was a backward step for Egypt, which was under emergency law for Mubarak's entire 30-year rule. His police used the sweeping arrest provisions to muzzle dissent and round up opponents, including members of the Brotherhood and even Mursi himself.


Heba Morayef of Human Rights Watch in Cairo said the police, still hated by many Egyptians for their heavy-handed tactics under Mubarak, would once again have the right to arrest people "purely because they look suspicious", undermining efforts to create a more efficient and respected police force.


"It is a classic knee-jerk reaction to think the emergency law will help bring security," she said. "It gives so much discretion to the Ministry of Interior that it ends up causing more abuse, which in turn causes more anger."


(Additional reporting by Yasmine Saleh in Cairo and Yusri Mohamed in Ismailia; Editing by Will Waterman)



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Wall Street Week Ahead: Bears hibernate as stocks near record highs

NEW YORK (Reuters) - Stocks have been on a tear in January, moving major indexes within striking distance of all-time highs. The bearish case is a difficult one to make right now.


Earnings have exceeded expectations, the housing and labor markets have strengthened, lawmakers in Washington no longer seem to be the roadblock that they were for most of 2012, and money has returned to stock funds again.


The Standard & Poor's 500 Index <.spx> has gained 5.4 percent this year and closed above 1,500 - climbing to the spot where Wall Street strategists expected it to be by mid-year. The Dow Jones industrial average <.dji> is 2.2 percent away from all-time highs reached in October 2007. The Dow ended Friday's session at 13,895.98, its highest close since October 31, 2007.


The S&P has risen for four straight weeks and eight consecutive sessions, the longest streak of days since 2004. On Friday, the benchmark S&P 500 ended at 1,502.96 - its first close above 1,500 in more than five years.


"Once we break above a resistance level at 1,510, we dramatically increase the probability that we break the highs of 2007," said Walter Zimmermann, technical analyst at United-ICAP, in Jersey City, New Jersey. "That may be the start of a rise that could take equities near 1,800 within the next few years."


The most recent Reuters poll of Wall Street strategists estimated the benchmark index would rise to 1,550 by year-end, a target that is 3.1 percent away from current levels. That would put the S&P 500 a stone's throw from the index's all-time intraday high of 1,576.09 reached on October 11, 2007.


The new year has brought a sharp increase in flows into U.S. equity mutual funds, and that has helped stocks rack up four straight weeks of gains, with strength in big- and small-caps alike.


That's not to say there aren't concerns. Economic growth has been steady, but not as strong as many had hoped. The household unemployment rate remains high at 7.8 percent. And more than 75 percent of the stocks in the S&P 500 are above their 26-week highs, suggesting the buying has come too far, too fast.


MUTUAL FUND INVESTORS COME BACK


All 10 S&P 500 industry sectors are higher in 2013, in part because of new money flowing into equity funds. Investors in U.S.-based funds committed $3.66 billion to stock mutual funds in the latest week, the third straight week of big gains for the funds, data from Thomson Reuters' Lipper service showed on Thursday.


Energy shares <.5sp10> lead the way with a gain of 6.6 percent, followed by industrials <.5sp20>, up 6.3 percent. Telecom <.5sp50>, a defensive play that underperforms in periods of growth, is the weakest sector - up 0.1 percent for the year.


More than 350 stocks hit new highs on Friday alone on the New York Stock Exchange. The Dow Jones Transportation Average <.djt> recently climbed to an all-time high, with stocks in this sector and other economic bellwethers posting strong gains almost daily.


"If you peel back the onion a little bit, you start to look at companies like Precision Castparts , Honeywell , 3M Co and Illinois Tool Works - these are big, broad-based industrial companies in the U.S. and they are all hitting new highs, and doing very well. That is the real story," said Mike Binger, portfolio manager at Gradient Investments, in Shoreview, Minnesota.


The gains have run across asset sizes as well. The S&P small-cap index <.spcy> has jumped 6.7 percent and the S&P mid-cap index <.mid> has shot up 7.5 percent so far this year.


Exchange-traded funds have seen year-to-date inflows of $15.6 billion, with fairly even flows across the small-, mid- and large-cap categories, according to Nicholas Colas, chief market strategist at the ConvergEx Group, in New York.


"Investors aren't really differentiating among asset sizes. They just want broad equity exposure," Colas said.


The market has shown resilience to weak news. On Thursday, the S&P 500 held steady despite a 12 percent slide in shares of Apple after the iPhone and iPad maker's results. The tech giant is heavily weighted in both the S&P 500 and Nasdaq 100 <.ndx> and in the past, its drop has suffocated stocks' broader gains.


JOBS DATA MAY TEST THE RALLY


In the last few days, the ratio of stocks hitting new highs versus those hitting new lows on a daily basis has started to diminish - a potential sign that the rally is narrowing to fewer names - and could be running out of gas.


Investors have also cited sentiment surveys that indicate high levels of bullishness among newsletter writers, a contrarian indicator, and momentum indicators are starting to also suggest the rally has perhaps come too far.


The market's resilience could be tested next week with Friday's release of the January non-farm payrolls report. About 155,000 jobs are seen being added in the month and the unemployment rate is expected to hold steady at 7.8 percent.


"Staying over 1,500 sends up a flag of profit taking," said Jerry Harris, president of asset management at Sterne Agee, in Birmingham, Alabama. "Since recent jobless claims have made us optimistic on payrolls, if that doesn't come through, it will be a real risk to the rally."


A number of marquee names will report earnings next week, including bellwether companies such as Caterpillar Inc , Amazon.com Inc , Ford Motor Co and Pfizer Inc .


On a historic basis, valuations remain relatively low - the S&P 500's current price-to-earnings ratio sits at 15.66, which is just a tad above the historic level of 15.


Worries about the U.S. stock market's recent strength do not mean the market is in a bubble. Investors clearly don't feel that way at the moment.


"We're seeing more interest in equities overall, and a lot of flows from bonds into stocks," said Paul Zemsky, who helps oversee $445 billion as the New York-based head of asset allocation at ING Investment Management. "We've been increasing our exposure to risky assets."


For the week, the Dow climbed 1.8 percent, the S&P 500 rose 1.1 percent and the Nasdaq advanced 0.5 percent.


(Reporting by Ryan Vlastelica; Additional reporting by Chuck Mikolajczak; Editing by Jan Paschal)



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Djokovic beats Murray for 3rd straight Aust. Title


MELBOURNE, Australia (AP) — Novak Djokovic returned to his dominant best, becoming the first man in the Open era to win three consecutive Australian titles when he beat Andy Murray 6-7 (2), 7-6 (3), 6-3, 6-2 on Sunday night.


Nine other men had won back-to-back titles in Australia since 1968, but none were able to claim three in a row.


"I love this court," Djokovic said. "It's definitely my favorite Grand Slam. It's an incredible feeling winning this trophy once more."


He has won four of his six majors titles at at Melbourne Park, where he is now unbeaten in 21 matches.


Born a week apart in May 1987 and friends since their junior playing days, the two played like they knew each other's game very well in a rematch of last year's U.S. Open final won by Murray. There were no service breaks until the eighth game of the third set, when Djokovic finally broke through and then held at love to lead by two sets to one.


Djokovic earned two more service breaks in the fourth set, including one to take a 4-1 lead when Murray double-faulted on break point.


The 25-year-old Serb didn't rip his shirt off this time, as he did to celebrate his epic 5-hour, 53-minute win over Rafael Nadal in last year's final. He just did a little dance, looked up to the sky and then applauded the crowd after the 3-hour, 40-minute match.


Murray's win over Djokovic in the U.S. Open final last year ended a 76-year drought for British men at the majors, but he still is yet to make a breakthrough in Australia after losing a third final here in the last four years.


Djokovic's win went against the odds of recent finals at Melbourne Park. In four of the past five years, the player who won his semifinal second has won the tournament. But this year, Djokovic played his semifinal on Thursday — an easy three-set, 89-minute minute win over No. 4-seeded David Ferrer. Murray needed five energy sapping sets to beat 17-time major winner Roger Federer on Friday night.


The win consolidated Djokovic's position as the No. 1-ranked player in the world, while Federer and Murray will be second and third when the ATP rankings are released Monday.


Their last two matches in Grand Slams — Murray's five-set win at last year's U.S. Open and Djokovic's victory here last year in five in the semifinals — had a total of 35 service breaks.


It was a vastly different, more tactical battle on Sunday, with the first two tight sets decided in tiebreakers.


Murray, who called for a trainer to retape blisters on his right foot at the end of the second set, was visibly annoyed by noise from the crowd during his service games in the third set, stopping his service motion twice until the crowd quieted down. After dropping the third set, he complained about the noise to chair umpire John Blom.


Djokovic also appeared frustrated at times, kicking the ball football-style back over the net after he hit a forehand long during a lengthy point, and muttering to himself while sitting down in his chair during changeovers. But both players were guilty of making unforced errors, often ending long rallies with shots into the net or long.


Murray's fans came dressed for the occasion, with some wearing "Braveheart"-style wigs, Scottish flags painted on their faces and tartan caps. One group of men wore white T-shirts with black letters that spelled out A-N-D-Y; they serenaded Murray at the start of the first two sets.


There were a number of Serbian shirts, caps and flags in the stadium, as well as fans calling "Ajde!" or "Come on!" in Serbian to support Djokovic. Retired NBA basketball star Vlade Divac was sitting in Djokovic's box.


Djokovic looked agitated after failing to convert the break points in the first set, frequently looking up to his box and yelling at the members of his team and himself.


Although Djokovic went into the match with a 10-7 lead in head-to-heads, Murray had beaten Djokovic five out of eight times in tiebreakers, and that improved to six of nine after four unforced errors by Djokovic to end the first set.


Djokovic pegged back that edge in the second set, when Murray also didn't help his cause by double-faulting to give Djokovic a 3-2 lead, and the Serbian player didn't trail again in the tiebreaker. He leveled the match after nearly 2 hours, 15 minutes.


Andre Agassi was among those in the capacity crowd at Rod Laver Arena — the four-time Australian champion's first trip Down Under in nearly 10 years — and he later presented the trophy to Djokovic.


Victoria Azarenka, who won Saturday's women's singles final over Li Na, was in the crowd with her boyfriend rapper Redfoo. Actor Kevin Spacey, who met in the dressing room with both players ahead of the match and later tweeted a photo of himself with them, also was in attendance for the third straight night.


In the earlier mixed doubles final Sunday, wild-card entrants Jarmila Gajdosova and Matthew Ebden of Australia beat the Czech pair of Lucie Hradecka and Frantisek Cermak 6-3, 7-5.


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Bulgaria holds nuclear power referendum






SOFIA, Bulgaria (AP) — Bulgarians are voting in a referendum on whether a new nuclear power plant should be built in the European Union‘s poorest member country, a choice also seen as a barometer of the country’s relationship with Russia.


Sunday’s vote was called by the opposition Socialist party in an effort to force the government to reverse its decision to scrap a deal with Russia on the construction of a second nuclear plant.






Bulgaria’s first referendum since the fall of communism in 1989 has polarized opinion along party lines. It has been seen as a test ahead of general elections in July, but also as a chance to loosen Moscow’s energy grip.


The latest polls estimate a low turnout, which could make the referendum invalid. At least 60 percent of the electorate must take part.


Energy News Headlines – Yahoo! News





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Women in infantry: Tough challenge?




Hospital Corpsman Shannon Crowley packs for a mission as Lance Cpl.. Kristi Baker sits on her bed in 2010 in Afghanistan.




STORY HIGHLIGHTS


  • Maren Leed: Ban on women in combat has hurt operations, women's promotion

  • Leed: Integrating women into the physically demanding infantry presents challenges

  • Women are already in combat; she says, the "front line" and "rear line" no longer exist

  • Leed: Research into women in infantry might show that some limits might be appropriate




Editor's note: Maren Leed is senior adviser, Harold Brown Chair in defense policy studies at the Center for Strategic and International Studies. From 2011 to 2012, she served as senior adviser to the chief of staff of the U.S. Army. Follow the Center for Strategic and International Studies on Twitter.


(CNN) -- In the coming years, lifting the ban on women in combat, announced Thursday by Defense Secretary Leon Panetta, might prove particularly challenging in the most iconic of military occupations -- the infantry, among the most physically demanding and tradition-bound branches of the Marines and the Army.


Determining the best path forward to integrate women into this elite group will require hard-nosed honesty, careful management and compelling leadership.


For the 65 years that women have enjoyed a permanent place in the United States military, they have been subject to restrictions. One rationale is the notion embedded in our culture that women should be shielded from great physical risks. Another is a recognition of the physical superiority of the average male over the average female. A third is the fear that unit cohesion, critical to military performance, would suffer with the introduction of women.



Maren Leed

Maren Leed




These three concerns apply to varying degrees in the infantry. But the last 11 years of war have clearly demonstrated that warfare is no longer waged in a linear fashion, and that the concept of "front line" no longer applies.


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Historically, logistics operations were conducted "in the rear," where risks were comparatively low. This has changed: In 2006 in Iraq, for example, one in every five truck convoys was attacked. Although infantry clearly remains one of the most dangerous military occupations, the proliferation of homemade bombs and other low-cost, lethal weaponry and tactics have heightened the risk of almost every occupation. War is more uniformly dangerous.


That said, physical differences between the sexes remains a thorny issue. Determining gender-neutral physical standards for an integrated infantry will be one of the most difficult tasks ahead.


Infantry soldiers and Marines are the primary forces for operations on foot. They not only travel long distances, but also frequently carry loads in excess of 50 pounds. Both the short- and long-term health effects of such demands can be significant.


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The Defense Department has consistently pursued solutions to lighten the load, from exoskeletons to unmanned vehicles that would serve as "pack mules," to the elusive quest for higher power, lower weight batteries.


The success of these efforts will benefit both men and women. But until that happens, research into the effects these physical demands have on women is necessary before determining the degree to which they can, and should, be part of the full range of infantry.


Whether men serving in the infantry will accept women as peers is another open question.


Those who oppose women in the infantry argue that they would change group dynamics, disrupt bonding and ultimately harm unit cohesion. In the past, these fears have been brought up regarding the participation of minorities and homosexuals, too. But data show these negative predictions don't come true. Instead, successful integration has happened with strong leadership, and, critically, a process that is broadly perceived to be fair.


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Even if the arguments underpinning the ban on women in combat have weakened, is there sufficient justification for change? The Joint Chiefs apparently believe so, as they have unanimously recommended the ban be lifted.


Each of the services already has been taking steps along these lines. This is in part driven by the evolution of the battlefield. When today's senior leaders were serving time in Iraq and Afghanistan, they realized that the restrictions on women sometimes also restricted their missions.


They implemented work-arounds and sought exceptions to policy. But they came home with firsthand experience of the mismatch between modern warfare and the policies limiting women's role. Women are in combat, and senior military leaders believe that future success demands they must remain available to be so, in even greater numbers.


From the institutional viewpoint, there are also concerns that the traditional limitations fail to make the best use of women in the service. Combat experience weighs heavily in promotion decisions, and restrictions have precluded women from gaining experiences equal to those of male counterparts.


Women are also excluded from many of the occupations disproportionately represented in senior leadership, and that automatically limits the number of women who can advance to the highest levels. At the same time, the pool of Americans eligible for military service is shrinking, and competition for high-quality recruits is intensifying. So it's imperative that the military fully leverage the talent of the men and women it has and that it seeks to attract.


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The arguments in favor of lifting the ban on women in combat outweigh those against it. Despite Defense Secretary Leon Panetta's announcement on Thursday, the military services maintain the prerogative to preclude women from serving in certain positions or occupations.


Infantry, or at least some specialties within that branch, could well be a case in which restrictions are warranted. But military leaders have time to evaluate this proposition, and to set the conditions to make any change stick. The path ahead may not be smooth, but it is necessary.


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The opinions expressed in this commentary are solely those of Maren Leed.






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Bronzeville fire critically injures 1













Fire trucks on the scene of a fire in the 4200 block of South Cottage Grove Avenue.


Fire trucks on the scene of a fire in the 4200 block of South Cottage Grove Avenue.
(Adam Sege, Chicago Tribune / January 27, 2013)


























































An early-morning fire in the Bronzeville neighborhood sent a male to the hospital in critical condition, authorities said.


The blaze broke out about 12:15 a.m. in a high-rise building in the 4200 block of South Cottage Grove Avenue, fire officials said.


Fire officials enacted an EMS Plan 1, which automatically sends at least five ambulances to the scene, but firefighters managed to quickly put out the blaze before it spread beyond a single room, said James Mungovan, the Deputy District Chief for District 5 with the Chicago Fire Department.





The injured male was taken to John H. Stroger, Jr. Hospital of Cook County in critical condition, officials said.


The cause of the fire remained under investigation as of early Sunday.


chicagobreaking@tribune.com


Twitter: ChicagoBreaking






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Egyptian youths, police clash in fourth day of violence


CAIRO (Reuters) - Police fired teargas at dozens of stone-throwing protesters in Cairo on Sunday in a fourth day of street clashes that have killed at least 42 people and compounded the challenges facing President Mohamed Mursi.


In the worst violence, security sources said 33 people died in Port Said on Saturday when protests erupted after a court sentenced 21 people, mostly from the city, to death for their role in a deadly stadium disaster last year.


Thousands of mourners joined funeral processions for the dead in Port Said on Sunday, a witness said by telephone, adding that he heard gunshots and the sound of emergency vehicle sirens. But there were no immediate reports of new casualties.


Mursi's opponents have also taken to the streets across Egypt since Thursday, accusing him and his Islamist allies of betraying the uprising that overthrew Hosni Mubarak in 2011.


"None of the revolution's goals have been realized," said Mohamed Sami, a protester in Cairo's Tahrir Square on Sunday.


"Prices are going up. The blood of Egyptians is being spilt in the streets because of neglect and corruption and because the Muslim Brotherhood is ruling Egypt for their own interests."


On a bridge close to Tahrir Square, youths hurled stones at police in riot gear who fired teargas to push them back towards the square, the cauldron of the uprising that erupted on January 25, 2011 and toppled Mubarak 18 days later.


The latest protests were initially timed to mark Friday's anniversary of that revolt.


The U.S. and British embassies, both close to Tahrir, said they were closed for public business on Sunday.


The violence adds to the daunting task facing Mursi as he tries to fix a beleaguered economy and cool tempers before a parliamentary election expected in the next few months which is supposed to cement Egypt's transition to democracy.


It has exposed a deep rift in the nation. Liberals and other opponents accuse Mursi of failing to deliver on economic promises and say he has not lived up to pledges to represent all Egyptians. His backers say the opposition is seeking to topple Egypt's first freely elected leader by undemocratic means.


DIVISIONS


The army, Egypt's interim ruler until Mursi's election in June, was sent back onto the streets to restore order in Port Said and Suez, another port city on the Suez Canal where at least eight people have been killed in clashes with police.


In Port Said, residents had reported gunshots overnight and shops and many workplaces were shut on Sunday. Residents said the city had been tense ahead of the funerals amid fears the burials could set off further violence.


Many Egyptians are frustrated by the regular escalations that have hurt the economy and their livelihoods.


"They are not revolutionaries protesting," said taxi driver Kamal Hassan, 30, referring to those gathered in Tahrir. "They are thugs destroying the country."


The National Defence Council, headed by Mursi, has called for a national dialogue to discuss political differences.


That offer has been cautiously welcomed by the opposition National Salvation Front. But the coalition has demanded a clear agenda and guarantees that any agreements will be implemented.


The Front, formed late last year when Mursi provoked protests and violence by expanding his powers and driving through an Islamist-tinged constitution, has threatened to boycott the parliamentary poll and to call for more protests if a list of demands is not met, including having an early presidential vote.


Egypt's transition has been blighted from the outset by political rows and turbulence on the streets that have driven investors out and kept many tourists away, starving the economy of vital sources of hard currency.


Egypt's defense minister who also heads the army, Abdel Fattah al-Sissi, called for the nation to stand together and said the military would not prevent peaceful protests. But he called on demonstrators to protect public property.


Clashes in Port Said erupted after a judge sentenced 21 men to death for involvement in 74 deaths at a soccer match on February 1, 2012 between Cairo's Al Ahly club and the local al-Masri team. Many of the victims were fans of the visiting team.


There were 73 defendants in the case. Those not sentenced on Saturday will face a verdict on March 9, the judge said.


Al Ahly fans cheered the verdict after threatening action if the death penalty was not meted out. But Port Said residents were furious that people from their city were held responsible.


(Additional reporting by Shaimaa Fayed in Cairo and Yusri Mohamed in Ismailia; Editing by Janet Lawrence)



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