শুক্রবার, ২৬ এপ্রিল, ২০১৩

Ice tubes in polar seas -- 'brinicles' or 'sea stalactites' -- provide clues to origin of life

Apr. 24, 2013 ? Life on Earth may have originated not in warm tropical seas, but with weird tubes of ice -- sometimes called "sea stalactites" -- that grow downward into cold seawater near Earth's poles, scientists are reporting. Their article on these "brinicles" appears in ACS' journal Langmuir.

Bruno Escribano and colleagues explain that scientists know surprisingly little about brinicles, which are hollow tubes of ice that can grow to several yards in length around streamers of cold seawater under pack ice. That's because brinicles are difficult to study. The scientists set out to gather more information on the topic with an analysis of the growth process of brinicles.

They are shown to be analogous to a "chemical garden," a standby demonstration in chemistry classes and children's chemistry sets, in which tubes grow upward from metal salts dropped into silicate solution. But brinicles grow downward from the bottom of the ice pack.

The analysis concluded that brinicles provide an environment that could well have fostered the emergence of life on Earth billions of years ago, and could have done so on other planets. "Beyond Earth, the brinicle formation mechanism may be important in the context of planets and moons with ice-covered oceans," the report states, citing in particular two moons of Jupiter named Ganymede and Callisto.

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The above story is reprinted from materials provided by American Chemical Society.

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Journal Reference:

  1. Julyan Cartwright, Bruno Escribano, Diego L. Gonz?lez, Claro Ignacio Sainz-Diaz, idan tuval. Brinicles as a case of inverse chemical gardens. Langmuir, 2013; : 130403173604005 DOI: 10.1021/la4009703

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Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/DaSQJwKHSz4/130424112316.htm

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বৃহস্পতিবার, ২৫ এপ্রিল, ২০১৩

Bangladesh collapse factories ignored evacuation

Bangladeshi people gather as rescuers look for survivors and victims at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh,Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete. (AP Photo/A.M.Ahad)

Bangladeshi people gather as rescuers look for survivors and victims at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh,Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete. (AP Photo/A.M.Ahad)

In this image taken from AP video, garment worker Mohammad Altab moans to rescuers for help while trapped between concrete slabs and next to two corpses in a garment factory that collapsed Wednesday in Savar, near Dhaka, Bangladesh, Thursday, April 25, 2013. Deep cracks visible in the walls of the Bangladesh garment building had compelled police to order it evacuated a day before it collapsed, officials said Thursday. More than 200 people were killed when the eight-story building splintered into a pile of concrete because factories based there ignored the order and kept more than 2,000 people working. (AP Photo/AP video)

Relatives cry as rescuers look for survivors and victims at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh,Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete on Wednesday. (AP Photo/A.M.Ahad)

Bangladesh rescuers look for survivors and victims at the site of a building that collapsed Wednesday in Savar, near Dhaka, Bangladesh,Thursday, April 25, 2013. By Thursday, the death toll reached at least 194 people as rescuers continued to search for injured and missing, after a huge section of an eight-story building that housed several garment factories splintered into a pile of concrete. (AP Photo/A.M.Ahad)

Rescue workers use clothing to lower down survivors from the site of a building that collapsed in Savar, near Dhaka, Bangladesh, Wednesday, April 24, 2013. An eight-story building housing several garment factories collapsed near Bangladesh?s capital on Wednesday, killing dozens of people and trapping many more under a jumbled mess of concrete. Rescuers tried to cut through the debris with earthmovers, drilling machines and their bare hands. (AP Photo/A.M.Ahad)

(AP) ? Deep cracks visible in the walls of a Bangladesh garment building had compelled police to order it evacuated a day before it collapsed, officials said Thursday. More than 230 people were killed when the eight-story building splintered into a pile of concrete because factories based there ignored the order and kept more than 2,000 people working.

Wednesday's disaster in the Dhaka suburb of Savar is the worst ever for Bangladesh's booming and powerful garment industry, surpassing a fire less than five months earlier that killed 112 people. Workers at both sites made clothes for major brands around the world; some of the companies in the building that fell say their customers include retail giants such as Wal-Mart.

Hundreds of rescuers, some crawling through the maze of rubble in search of survivors and corpses, worked through the night and into Thursday amid the cries of the trapped and the wails of workers' relatives gathered outside the building, called Rana Plaza. It housed numerous garment factories and a handful of other companies.

An Associated Press cameraman who went into the rubble with rescue workers spoke briefly to a garment worker pinned face down in the darkness between concrete slabs and next to two corpses. Mohammad Altab pleaded for help, but they were unable to free him.

"Save us, brother. I beg you, brother. I want to live," Altab moaned. "It's so painful here ... I have two little children."

Another survivor, whose voice could be heard from deep in the rubble, wept as he called for help.

"We want to live, brother. It's hard to remain alive here. It would have been better to die than enduring such pain to live on. We want to live. Please save us," the man cried.

After the cracks were reported in the walls of Rana Plaza on Tuesday, managers of a local bank that also had an office in the building evacuated their workers. The garment factories, though, kept working, ignoring the instructions of the local industrial police, said Mostafizur Rahman, a director of that paramilitary police force.

The Bangladesh Garment Manufacturers and Exporters Association had also asked the factories to suspend work starting Wednesday morning, hours before the collapse.

"After we got the crack reports, we asked them to suspend work until further examination, but they did not pay heed," said Atiqul Islam, the group's president.

On Thursday morning, the odor of rotting bodies wafted through holes cut into the building. Bangladesh's junior minister for home affairs, Shamsul Haque, said that by late Thursday morning 2,000 people had been rescued from the wreckage.

Brig. Gen. Mohammed Siddiqul Alam Shikder, who is overseeing army rescue teams, said the death toll had climbed to 238 by Thursday evening.

Dozens of bodies, their faces covered, were laid outside a local school building so relatives could identify them. Thousands of workers' relatives gathered outside the building, waiting for news, and thousands of garment workers from nearby factories took to the streets across the industrial zone in protest.

Shikder said rescue operations were progressing slowly and carefully to save as many people as possible.

He said rescue teams were standing by with heavy equipment and would "start bulldozing the debris once we get closer to the end of the operation. But now we are careful."

He also said the huge crowd that remained at the collapse site Thursday was interfering with getting more rescuers to the scene.

"We are ready with about 1,000 soldiers and rescue workers from other departments. But a huge crowd is obstructing our effort," he said.

Thousands of workers from the hundreds of other garment factories in the Savar industrial zone took to the streets to protest the factory collapse and poor safety standards for the country's garment workers.

Television reports said that hundreds of protesting workers also clashed with police in Dhaka and the nearby industrial zone of Ashulia. It was not immediately clear whether there were any injuries in those clashes.

The garment manufacturers' group said the factories in Rana Plaza employed 3,122 workers, but it was not clear how many were in the building when it collapsed.

Searchers worked through the night to probe the jumbled mass of concrete with drills or their bare hands, passing water and flashlights to people pinned inside.

"I gave them whistles, water, torchlights. I heard them cry," said fire official Abul Khayer late Wednesday, as he prepared to work late into the night.

Abdur Rahim, an employee who worked on the fifth floor, said he and his co-workers had gone inside Wednesday morning despite the cracks in the building, after a factory manager gave assurances that it was safe. About an hour later, the building collapsed. The next thing Rahim remembered was regaining consciousness outside.

Abdul Halim, an official with the engineering department in Savar, said the owner was originally allowed to construct a five-story building but added another three stories illegally.

On a visit to the site, Home Minister Muhiuddin Khan Alamgir told reporters the building had violated construction codes and that "the culprits would be punished."

Local police chief Mohammed Asaduzzaman said police and the government's Capital Development Authority have filed separate cases of negligence against the building owner. Bangladesh's High Court also asked the owner of the building and the heads of the garment factories to appear before it on April 30 to explain their role.

Habibur Rahman, police superintendent of the Dhaka district, identified the building owner as Mohammed Sohel Rana, a local leader of the ruling Awami League's youth front. Rahman said police were looking for the owners of the garment factories.

Among the garment makers in the building were Phantom Apparels, Phantom Tac, Ether Tex, New Wave Style and New Wave Bottoms. Altogether, they produced several million shirts, pants and other garments a year.

The New Wave companies, according to their website, make clothing for major brands including North American retailers The Children's Place and Dress Barn, Britain's Primark, Spain's Mango and Italy's Benetton. Ether Tex said Wal-Mart, the world's biggest retailer, was one of its customers.

Primark acknowledged it was using a factory in Rana Plaza, but many other retailers distanced themselves from the disaster, saying they were not involved with the factories at the time of the collapse or had not recently ordered garments from them.

Benetton said in an email to The Associated Press that people involved in the collapse were not Benetton suppliers. Wal-Mart said it was investigating and Mango said it had only discussed production of a test sample of clothing with one of the factories.

The November factory fire that killed 112 people drew international attention to working conditions in Bangladesh's $20 billion-a-year textile industry. There were calls by labor activists, manufacturers, the government and major retailers for improved safety standards, but so far there has been little progress. The country has about 4,000 garment factories and exports clothes to leading Western retailers, and industry leaders hold great influence in the South Asian nation.

Bangladesh's garment industry was the third-largest in the world in 2011, after China and Italy. It has grown rapidly over the past decade, a boom fueled by some of the lowest labor costs in the world. The national minimum wage, which was doubled in 2010, stands at $38 per month.

The Tazreen factory that caught fire in November lacked emergency exits, and its owner said only three floors of the eight-story building were legally built. Surviving employees said gates had been locked and managers had told them to go back to work after the fire alarm went off.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/3d281c11a96b4ad082fe88aa0db04305/Article_2013-04-25-AS-Bangladesh-Building-Collapse/id-4736c258111e40f1a26b8dca1e3d9a16

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Fonda to add prints by dad's at Chinese Theatre

LOS ANGELES (AP) ? Jane Fonda is planning to shed a few tears on Saturday.

That's when the 75-year-old Oscar winner will place her hand and footprints next to her father's in the concrete shrine to celebrity outside Hollywood's Chinese Theatre. Then she'll present a special screening of the film she made with her dad, 1981's "On Golden Pond." The cement and cinematic tribute is part of the 2013 TCM Classic Film Festival, which is honoring Jane Fonda.

"I am very, very excited," Fonda said in an interview this week. "I thought probably I would die and this would never happen. I'm just really thrilled that it actually is happening and not only that, but I get to put my hand and footprints right next to my father. ... I'm just so happy I'll probably cry."

The honor inspired Fonda to reflect on her career, which hasn't slowed since she returned to acting in 2005 after a 15-year hiatus.

"I've made some really good films. There's also a lot of films I wish I could do over again," she said. "But I've been lucky: I've worked with some great directors, and I feel like I'm still a work in progress as an actor. I feel like I'm still learning."

After her guest-starring stint on "The Newsroom," she's more interested than ever in television.

"I'd love to have a television series of my own," Fonda said. "I'm hoping that might happen."

A fitness pioneer, Fonda continues to focus on health and wellness with a series of videos aimed at older exercisers. She also inspired countless Oscar watchers earlier this year with her fitted, bright yellow gown, and she serves as L'Oreal's oldest spokeswoman.

"When you're younger, you don't have to put so much time into it, but also I didn't care that much. I was an activist and I didn't think so much about how I appeared," she said. "As I've gotten older, I've paid more attention to how I dress, how I look, what makeup I use, what skincare products I use... I guess one reason that I put more effort into looking good now is because I think it gives hope to other women. It takes the edge off the fear that young people have of getting older."

The wisdom and openness that come with aging are easy to wear well, and Fonda said she's happier now than ever.

"This event that's coming up where I get to put my hand and shoeprints next to my dad in front of the Chinese Theatre, it's coming at a very happy time in my life," Fonda said, "and making it even happier."

___

Follow AP Entertainment Writer Sandy Cohen on Twitter: www.twitter.com/APSandy.

___

Online:

http://filmfestival.tcm.com

Source: http://news.yahoo.com/fonda-add-prints-dads-chinese-theatre-140051305.html

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AMD Radeon HD 7990 review roundup: fast, quiet, but no world beater

Now that the veil has been lifted from the AMD Radeon HD 7990, it's time for the usual enthusiast review sites to reveal their thoughts -- and benchmarks -- on the latest graphics card from Sunnyvale. As we've mentioned, the 7990 has effectively two 7970 GPUs on board, promising over 8 TFLOPS of power and the chops to handle full 4K resolution under maximum settings. However, it's a pricey little thing at around $1,000, which doesn't set it too far away from the competition and its unique cooling system means an airy case is a must. What do our sample of reviewers think? Find out in our roundup after the break.

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Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/iqj4mCJYBNw/

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Many Who Got Thyroid Cancer After Chernobyl Still Alive: Study ...

chernobyl Many Who Got Thyroid Cancer After Chernobyl Still Alive: Study

WEDNESDAY, April 24 (HealthDay News) ? Many people who were children and teens when they developed thyroid cancer after the Chernobyl nuclear disaster in 1986 are now in total or nearly complete remission, a new study indicates.

The finding is good news for people exposed to radiation from the 2011 Fukushima accident in Japan and other victims of nuclear disasters, the researchers said.

Following the explosion and fire at the Chernobyl nuclear plant in Ukraine, there was a spike in the number of children and teens diagnosed with thyroid cancer in Ukraine, Belarus and western areas of Russia.

This study looked at the outcomes of nearly 250 Belarusian children and teens who were diagnosed with thyroid cancer after the disaster and underwent surgery and radioiodine therapy. The researchers found that 64 percent of the patients are in complete remission and 30 percent are in nearly complete remission of their cancer.

One patient died of lung fibrosis, a side effect of cancer treatment. Only two had thyroid cancer recurrences, according to the study, which was published online April 24 in the Journal of Clinical Endocrinology & Metabolism.

?Even though some patients did not receive optimal treatment initially, the vast majority went into remission after receiving state-of-the-art radioiodine treatment and follow-up care,? study author Dr. Christoph Reiners, of the University of Wurzburg, in Germany, said in a journal news release.

?Many patients recovered from advanced cancers,? he said. ?Of this group, 97 percent had cancer spread to the lymph nodes, and 43 percent had cancer metastasize in the lungs.?

The findings suggest that victims of more recent nuclear disasters face a lower risk of developing advanced-stage thyroid cancer.

?Although people fear a similar thyroid cancer ?epidemic? will affect Japan, the quick actions taken to evacuate or shelter residents and ban potentially contaminated foods following the Fukushima accident greatly reduced the risks of children developing radiation-induced thyroid cancer,? Reiners said.

?In addition, Chernobyl has taught us how important it is to have at-risk children and adolescents screened for thyroid cancer to catch any cases in their early stages,? he said. ?Because public health authorities are aware of the risks, screening programs for children from the Fukushima area already have been initiated.?

More information

The American Cancer Society has more about thyroid cancer.

HEALTHDAY Web XSmall Many Who Got Thyroid Cancer After Chernobyl Still Alive: Study

Source: http://news.health.com/2013/04/24/many-who-got-thyroid-cancer-after-chernobyl-still-alive-study/

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শুক্রবার, ৫ এপ্রিল, ২০১৩

Make Your Over-The-Ear Headphones More Comfortable With Some Foam Tubing

Make Your Over-The-Ear Headphones More Comfortable With Some Foam TubingIf you wear headphones for an extended amount of time, chances are you'll start to feel some discomfort around your ears. This quick hack from the folks at WonderHowTo is a great way to make your headphones more comfortable for extended wear.

All you need to do is cut a length of backer rod?the thin foam tubing used before caulking?and use it to line the inside of your headphones as padding. Audiophiles should note that even a small, unobtrusive change like this can alter how your headphones sound, so your mileage may vary. However, if you've got a pair of cheaper headphones you just want to make more comfortable, this is probably worth a shot. You might also want to check out these further tricks for making your headphones more comfortable or our top 10 headphone hacks.

How to Make Your Headphones More Comfortable with Caulk Backer Rods | WonderHowTo

Source: http://feeds.gawker.com/~r/lifehacker/full/~3/FvY5xqr08O0/make-your-over+the+ear-headphones-more-comfortable-with-some-foam-tubing

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Dismal US jobs report, Iran talks weigh on oil

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Students try to banish Catholic chaplain from campus for anti-gay stance

Two gay seniors at George Washington University say they feel alienated because the chaplain at George Washington?s Newman Center rejects homosexuality, and they aren?t going to take it anymore.

The seniors, Damian Legacy and Blake Bergen, have announced a coordinated campaign to rid the campus of the Roman Catholic priest, reports The GW Hatchet, the school?s independent student newspaper.

They also assert that 12 or more students have quit the Newman Center in recent years because they can?t tolerate Father Greg Shaffer?s ardent anti-gay ?? and, for the record, anti-abortion ? beliefs.

Shaffer has worked for five years at George Washington?s Newman Center. He told the Hatchet that religion and unrestricted speech ?play a vital role at a diverse university like GW.?

Legacy and Bergen say they are primarily upset about the counseling Shaffer offers. They say he urges students who have homosexual feelings to lead a life of celibacy.

Catholic Church doctrine maintains that homosexual desire isn?t a sin, but acting on that desire is, according to the website Catholic.com.

Legacy told the Hatchet that he spent considerable time at the Newman Center during his first two years at George Washington. He was an altar server at mass. He believed that he would become a Catholic priest after graduating.

All that changed, though, when Legacy told Shaffer that he and Bergen had entered a homosexual relationship. Shaffer allegedly charged Legacy with being immoral and lacking in faith.

?To have my faith leader view me that way, just because of one piece of the way that God made me, and to think that one part is responsible for the destruction of my human dignity, it just didn?t?I can?t even begin to describe the mental conflict that it creates,? Legacy told the Hatchet.

The two gay seniors are also unhappy about a blog post Shaffer authored back in May 2012, just after President Barack Obama publicly endorsed gay marriage.

?As Vatican II states, God is the author of marriage. He has defined marriage as between a man and a woman,? Shaffer then wrote. ?Every single rational person knows that sexual relationships between persons of the same sex are unnatural and immoral. They know it in their hearts.?

The plan to oust Shaffer includes the creation of a video containing the statements of several students who have left GW?s Newman Center. That video, Legacy and Bergen hope, will surely arouse the generally left-leaning campus to anger, thus forcing school officials to act.

Other aspects of the proposed GW Newman Center insurgency include filing a formal complaint with the administration and conducting a series of prayer vigils outside the center.

Legacy and Bergen will also distribute a letter to high-ranking administrators. According to The Hatchet, the letter will cite academic studies connecting homophobic behavior to loss of appetite, insomnia and other detrimental psychological consequences.

Finally, Legacy will request that GW?s Student Association defund the Newman Center (which is affiliated with the school but officially part of the Roman Catholic Church). This year, the Center reportedly collected $10,000 in funding.

Last semester, Legacy presented a report to the school?s Office for Diversity and Inclusion explaining that other schools, such as New York University, vet and evaluate religious leaders before allowing them to work with campus-affiliated groups.

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Source: http://news.yahoo.com/students-try-banish-catholic-chaplain-campus-anti-gay-122022298.html

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Discovery of 1,800-year-old 'Rosetta Stone' for tropical ice cores

Discovery of 1,800-year-old 'Rosetta Stone' for tropical ice cores [ Back to EurekAlert! ] Public release date: 4-Apr-2013
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Contact: Pam Frost Gorder
Gorder.1@osu.edu
614-292-9475
Ohio State University

Find offers the most complete picture of Earth's low-latitude climate history to date

COLUMBUS, OhioTwo annually dated ice cores drawn from the tropical Peruvian Andes reveal Earth's tropical climate history in unprecedented detailyear by year, for nearly 1,800 years.

Researchers at The Ohio State University retrieved the cores from a Peruvian ice cap in 2003, and then noticed some startling similarities to other ice cores that they had retrieved from Tibet and the Himalayas. Patterns in the chemical composition of certain layers matched up, even though the cores were taken from opposite sides of the planet.

In the April 4, 2013 online edition of the journal Science Express, they describe the find, which they call the first annually resolved "Rosetta Stone" with which to compare other climate histories from Earth's tropical and subtropical regions over the last two millennia.

The cores provide a new tool for researchers to study Earth's past climate, and better understand the climate changes that are happening today.

"These ice cores provide the longest and highest-resolution tropical ice core record to date," said Lonnie Thompson, distinguished university professor of earth sciences at Ohio State and lead author of the study.

"In fact, having drilled ice cores throughout the tropics for more than 30 years, we now know that this is the highest-resolution tropical ice core record that is likely to be retrieved."

The new cores, drilled from Peru's Quelccaya Ice Cap, are special because most of their 1,800-year history exists as clearly defined layers of light and dark: light from the accumulated snow of the wet season, and dark from the accumulated dust of the dry season.

They are also special because of where they formed, atop the high Andean altiplano in southern Peru. Most of the moisture in the area comes from the east, in snowstorms fueled by moist air rising from the Amazon Basin. But the ice core-derived climate records from the Andes are also impacted from the westspecifically by El Nio, a temporary change in climate, which is driven by sea surface temperatures in the tropical Pacific.

El Nio thus leaves its mark on the Quelccaya ice cap as a chemical signature (especially in oxygen isotopes) indicating sea surface temperatures in the equatorial Pacific Ocean over much of the past 1,800 years.

"We have been able to derive a proxy for sea surface temperatures that reaches back long before humans were able to make such measurements, and long before humans began to affect Earth's climate," Thompson said.

Ellen Mosley-Thompson, distinguished university professor of geography at Ohio State and director of the Byrd Polar Research Center, explained that the 2003 expedition to Quelccaya was the culmination of 20 years of work.

The Thompsons have drilled ice cores from glaciers atop the most remote areas of the planetthe Chinese Himalayas, the Tibetan Plateau, Kilimanjaro in Africa, and Papua Indonesia among othersto gauge Earth's past climate. Each new core has provided a piece of the puzzle, as the researchers measured the concentrations of key chemicals preserved in thousands of years of accumulated ice.

A 1983 trip to Quelccaya yielded cores that earned the research team their first series of papers in Science. The remoteness of the site and the technology available at the time limited the quality of samples they could obtain, however. The nearest road was a two-day walk from the ice cap, so they were forced to melt the cores in the field and carry samples back as bottles of water. This made some chemical measurements impossible, and diminished the time resolution available from the cores.

"Due to the remoteness of the ice cap, we had to develop new tools such as a light-weight drill powered by solar panels to collect the 1983 cores. However, we knew there was much more information the cores could provide" Mosley-Thompson said. "Now the ice cap is just a six-hour walk from a new access road where a freezer truck can be positioned to preserve the cores. So we can now make better dust measurements along with a suite of chemical analyses that we couldn't make before."

The cores will provide a permanent record for future use by climate scientists, Thompson added. This is very important, as plants captured by the advancing ice cap 6,000 years ago are now emerging along its retreating margins, which shows that Quelccaya is now smaller than it has been in six thousand years.

"The frozen history from this tropical ice capwhich is melting away as Earth continues to warmis archived in freezers at -30C so that creative people will have access to it 20 years from now, using instruments and techniques that don't even exist today," he said.

###

Coauthors on the study include Mary Davis, Victor Zagorodnov, and Ping-Nan Lin of Byrd Polar Research Center; Ian Howat of the School of Earth Sciences at Ohio State; and Vladimir Mikhalenko of the Russian Academy of Sciences. Funding was provided by the National Science Foundation's Paleoclimatology Program and Ohio State's Climate, Water and Carbon Program.

Contact:

Lonnie Thompson
614-292-6652
Thompson.3@osu.edu

Ellen Mosley-Thompson
614-292-6662
Thompson.4@osu.edu

Written by Pam Frost Gorder

Editor's note: Lonnie Thompson will be on travel from Saturday, March 30 until Thursday, April 4. During that time, he can be reached through Pam Frost Gorder.


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Discovery of 1,800-year-old 'Rosetta Stone' for tropical ice cores [ Back to EurekAlert! ] Public release date: 4-Apr-2013
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Contact: Pam Frost Gorder
Gorder.1@osu.edu
614-292-9475
Ohio State University

Find offers the most complete picture of Earth's low-latitude climate history to date

COLUMBUS, OhioTwo annually dated ice cores drawn from the tropical Peruvian Andes reveal Earth's tropical climate history in unprecedented detailyear by year, for nearly 1,800 years.

Researchers at The Ohio State University retrieved the cores from a Peruvian ice cap in 2003, and then noticed some startling similarities to other ice cores that they had retrieved from Tibet and the Himalayas. Patterns in the chemical composition of certain layers matched up, even though the cores were taken from opposite sides of the planet.

In the April 4, 2013 online edition of the journal Science Express, they describe the find, which they call the first annually resolved "Rosetta Stone" with which to compare other climate histories from Earth's tropical and subtropical regions over the last two millennia.

The cores provide a new tool for researchers to study Earth's past climate, and better understand the climate changes that are happening today.

"These ice cores provide the longest and highest-resolution tropical ice core record to date," said Lonnie Thompson, distinguished university professor of earth sciences at Ohio State and lead author of the study.

"In fact, having drilled ice cores throughout the tropics for more than 30 years, we now know that this is the highest-resolution tropical ice core record that is likely to be retrieved."

The new cores, drilled from Peru's Quelccaya Ice Cap, are special because most of their 1,800-year history exists as clearly defined layers of light and dark: light from the accumulated snow of the wet season, and dark from the accumulated dust of the dry season.

They are also special because of where they formed, atop the high Andean altiplano in southern Peru. Most of the moisture in the area comes from the east, in snowstorms fueled by moist air rising from the Amazon Basin. But the ice core-derived climate records from the Andes are also impacted from the westspecifically by El Nio, a temporary change in climate, which is driven by sea surface temperatures in the tropical Pacific.

El Nio thus leaves its mark on the Quelccaya ice cap as a chemical signature (especially in oxygen isotopes) indicating sea surface temperatures in the equatorial Pacific Ocean over much of the past 1,800 years.

"We have been able to derive a proxy for sea surface temperatures that reaches back long before humans were able to make such measurements, and long before humans began to affect Earth's climate," Thompson said.

Ellen Mosley-Thompson, distinguished university professor of geography at Ohio State and director of the Byrd Polar Research Center, explained that the 2003 expedition to Quelccaya was the culmination of 20 years of work.

The Thompsons have drilled ice cores from glaciers atop the most remote areas of the planetthe Chinese Himalayas, the Tibetan Plateau, Kilimanjaro in Africa, and Papua Indonesia among othersto gauge Earth's past climate. Each new core has provided a piece of the puzzle, as the researchers measured the concentrations of key chemicals preserved in thousands of years of accumulated ice.

A 1983 trip to Quelccaya yielded cores that earned the research team their first series of papers in Science. The remoteness of the site and the technology available at the time limited the quality of samples they could obtain, however. The nearest road was a two-day walk from the ice cap, so they were forced to melt the cores in the field and carry samples back as bottles of water. This made some chemical measurements impossible, and diminished the time resolution available from the cores.

"Due to the remoteness of the ice cap, we had to develop new tools such as a light-weight drill powered by solar panels to collect the 1983 cores. However, we knew there was much more information the cores could provide" Mosley-Thompson said. "Now the ice cap is just a six-hour walk from a new access road where a freezer truck can be positioned to preserve the cores. So we can now make better dust measurements along with a suite of chemical analyses that we couldn't make before."

The cores will provide a permanent record for future use by climate scientists, Thompson added. This is very important, as plants captured by the advancing ice cap 6,000 years ago are now emerging along its retreating margins, which shows that Quelccaya is now smaller than it has been in six thousand years.

"The frozen history from this tropical ice capwhich is melting away as Earth continues to warmis archived in freezers at -30C so that creative people will have access to it 20 years from now, using instruments and techniques that don't even exist today," he said.

###

Coauthors on the study include Mary Davis, Victor Zagorodnov, and Ping-Nan Lin of Byrd Polar Research Center; Ian Howat of the School of Earth Sciences at Ohio State; and Vladimir Mikhalenko of the Russian Academy of Sciences. Funding was provided by the National Science Foundation's Paleoclimatology Program and Ohio State's Climate, Water and Carbon Program.

Contact:

Lonnie Thompson
614-292-6652
Thompson.3@osu.edu

Ellen Mosley-Thompson
614-292-6662
Thompson.4@osu.edu

Written by Pam Frost Gorder

Editor's note: Lonnie Thompson will be on travel from Saturday, March 30 until Thursday, April 4. During that time, he can be reached through Pam Frost Gorder.


[ Back to EurekAlert! ] [ | E-mail | Share Share ]

?


AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.


Source: http://www.eurekalert.org/pub_releases/2013-04/osu-do1040113.php

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Secret Service director may be latest victim of high-profile hacks

WASHINGTON (Reuters) - The Secret Service said on Thursday it was investigating the claim that new Director Julia Pierson's personal information had been hacked and published on a website, another in a string of such incidents against top officials including first lady Michelle Obama and CIA Director John Brennan.

The information on the website included a Social Security number, phone numbers, and a credit report that includes accounts with The Home Depot, Sears, and Macy's.

It was unclear how much of the data that appeared on www.exposed.re was accurate or who posted it. The website appeared to have information about other government officials and celebrities that had been published online previously at another Internet address, www.exposed.su.

"We are investigating and we are aware of the matter," a Secret Service spokesman said without commenting further.

Pierson was sworn into office on March 27 and is the first woman to head the agency which protects the president.

An FBI spokeswoman said "we're aware of the reports" but she would not say whether the FBI was investigating them.

The Internet domain country code for the island of Reunion is .re, while .su was the domain code for the Soviet Union.

(Reporting by Tabassum Zakaria; editing by Jackie Frank)

Source: http://news.yahoo.com/secret-investigating-hack-directors-information-175903604.html

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Doctor from French 'Survivor' commits suicide

By Rhonda Richford, The Hollywood Reporter

PARIS -- Thierry Costa, the 38-year-old staff doctor for French "Survivor" spin-off "Koh-Lanta," committed suicide Monday in Cambodia, where the show had been filmed. Costa?s death comes 10 days after contestant Gerald Babin suffered a fatal heart attack on the first day of filming the series? 12th season.

PHOTOS: The dark side of reality TV: 25 tragic deaths

Production company Adventure Line Productions (ALP) announced Costa?s death and responded to the news of his passing in a statement late Monday.

"We have learned with dismay that Dr. Thierry Costa passed away in Cambodia today," said the statement. Costa had been with the show for four seasons. "His high level of professionalism and humanity towards participants and production teams has always been unanimously recognized."

AFP - Getty Images

A reproduction of a document received from Adventure Line Productions on April 1 shows the suicide letter of Thierry Costa, a French doctor who was working for "Koh Lanta" the French version of the hit reality TV show "Survivor."

Babin, 25, died while en route to hospital after completing the first two contestant challenges of jumping from a boat and swimming to shore and competing in a tug-of-war on the beach.?Babin complained of arm cramps and collapsed on the sand. He was treated on the scene before Costa ordered an emergency helicopter airlift, according to initial reports.

On Thursday, an anonymous source who identified themselves as a member of the production team, said that the producers declined to give Babin immediate medical attention for up to nine minutes so as not to interrupt shooting, and that he was initially taken from the scene to a local infirmary by boat and not helicopter as it was considered ?too costly.? The source said that Babin was finally transferred by to a hospital nearly two hours after his initial collapse.

STORY: French 'Survivor' season canceled after death of contestant

Costa left a suicide note that said his reputation had been harmed by the accusations. ?In recent days my name has been sullied in the media,? he wrote.?

Copies of the handwritten letter on hotel stationery were released by ALP and reprinted in the newspaper Le Parisien, which stated the family had approved the publication. In the letter Costa requested that it be released.?

?Unjust accusations and assumptions have been made against me,? he wrote.? He emphasized his love of medicine and said he had been devastated by the ?false accusations.?

?I am sure I treated Gerald with respect as a patient and not as a contestant.?

As a result, Babin?s family announced Monday they will seek damages on the basis of ?illegal conditions? and ?breaches of health and safety,? according to lawyer Jeremie Assous. Assous is seeking all of the footage from ALP as evidence.? French authorities have also opened a preliminary investigation into the circumstances surrounding his treatment and death, and may pursue manslaughter charges.

Related content:

More in The Clicker:

Source: http://theclicker.today.com/_news/2013/04/02/17571141-doctor-from-french-survivor-commits-suicide-after-contestants-death?lite

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Nimbuzz Releases Windows Phone 8 App For A Smart Phone Push In Emerging Markets

245202v2-max-450x450Nimbuzz, which has become a major mobile messaging application for emerging markets like India, is making a more aggressive moves into smartphone platforms. Today it announces the release of its app for Windows Phone 8. This will take advantage of the platform's Live Tiles and locked home screen notifications, although in fairness it's biggest growth platform remains Android and its core base of feature phones. Existing Nimbuzz users on Windows Phone 7.5 users can simply upgrade. The Nimbuzz platform has 150 million users spread across 200 countries.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/zI6yutaGd0M/

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AT&T to launch HTC One on April 19th starting at $199.99, preorders begin April 4th

AT&T (T) on Tuesday announced that it will launch the HTC One on April 19th and pricing will start at $199.99. The carrier will sell two different versions of HTC?s (2498) new flagship smartphone, a 32GB version for $199.99 and a 64 GB model that will cost $299.99 with a two-year contract, and preorder availability will begin on April 4th. Key specs include a quad-core 1.7GHz processor, a 4.7-inch full HD display, 2GB of RAM and Android 4.2 Jelly Bean. BGR reviewed the HTC One earlier this week and said it was the best Android smartphone we?ve ever tested. AT&T?s full press release follows below.

HTC One Arrives at AT&T April 19 Starting at $199.99

[More from BGR: HTC One Review]

Pre-Sales Begin April 4
Dallas, Texas, April 02, 2013

Beginning April 19, AT&T* plans to offer the highly-anticipated HTC One? smartphone to customers for $199.99 with a two-year commitment, for the 32 GB memory variant. AT&T is the only U.S. wireless carrier at launch to also offer a version with 64 GB of memory for $299.99 with a two-year commitment.

Customers eager to reserve their HTC One will be able to pre-order at http://www.att.com/htcone on April 4 starting at 1:00 p.m. CT. Only AT&T offers a free** HTC Media Link HD wireless HDMI adaptor*** (a $90 value), which lets you wirelessly share content from your phone to your HD television.

The HTC One runs on AT&T 4G LTE, the nation?s fastest 4G LTE network.**** AT&T has the nation?s largest 4G network, covering 288 million people.

HTC One is available in black and silver and boasts a powerful 1.7 GHz quad-core processor, and zero-gap aluminum unibody with a 4.7-inch full HD (1080p) screen and HTC Sense? innovations, to re-shape your smartphone experience.

  • HTC BlinkFeed? provides customized content and real-time updates streamed live on your home screen. HTC BlinkFeed aggregates your content from a variety of media sources, serving up fresh content all in one place, without the need to jump between multiple applications and web sites.
  • HTC Zoe? mode on the HTC One lets you grab the entire moment and bring it to life in three-second snippets. Special moments can be captured in HTC Zoe highlights, and displayed in a living gallery that you can set to music and special effects. AT&T Locker helps you hold onto those memories no matter where you are. You can automatically store photos, videos and documents in the cloud, so you can access and share from your smartphone or computer.
  • The HTC UltraPixel Camera with a breakthrough sensor gathers 300 percent more light than traditional smartphone camera sensors and delivers outstanding low-light performance.
  • HTC BoomSound? provides rich, clear sound with minimal distortion, as well as the authentic sound experience you expect from built-in Beats? by Dr. Dre Audio. HTC One features dual front-facing speakers and a built-in amplifier to bring music, movies and games alive. Since the speakers are on the front of the device, you no longer have to worry about muffled sound when setting your phone down.
  • HTC Sense TV? lets you use your HTC One as an interactive TV guide and remote control. It can be set up in a few simple steps and gives you the ability to access electronic program guides and control a receiver and home theatre right from your phone?s screen.
  • The HTC One features AT&T DriveMode?, an app that helps curb texting and driving. The app can be set-up to automatically send a customizable reply to incoming messages once a vehicle starts moving 25 mph. The auto-reply message is similar to an ?out-of-office alert? and can reply to texts, emails and wireless callers letting your friends know that you are driving and unable to respond.*****

Setting up your new HTC One is a snap with AT&T Ready2Go, a free service that helps you to easily set up and personalize your device in minutes from the comfort of your personal computer. With Ready2Go, it?s easy to set up your email accounts, import your contacts, connect to your social networks and more.

For more information, visit http://www.att.com/htcone.

Source: http://news.yahoo.com/t-launch-htc-one-april-19th-starting-199-134502677.html

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Scientist at Work Blog: A Beach Vacation, Lizard-Style

Jonathan Losos, professor and curator of herpetology at Harvard?s Museum of Comparative Zoology, writes from Colombia, where he is studying the biodiversity of anole lizards, an evolutionarily successful group that has produced 400 species throughout Central and South America and the Caribbean islands. For more on anoles, see anoleannals.org.

March 1, 2013

For 25 years, my research has focused on the evolution of Anolis lizards on islands in the Caribbean. That means I travel there several times a year. Whenever I tell people about my research, I can almost predict what they?re thinking. They valiantly attempt to suppress a smile as they picture me lolly-gagging on a beach, settled into a hammock and sipping a Mai-Tai. Here?s the problem with that: on Caribbean islands, anoles live just about everywhere except on the beach. And so, despite years of field work on these lizards, a day at the beach has never been part of the itinerary.

Until now that is. After spending a week in the chilly Andean mountains of Colombia, Rosario Casta?eda, Anthony Herrel and I have put away our sweatshirts and arrived in Maracaibo in the hot and dry northwest corner of Venezuela.

Our goal: to study the only known beach anole, Anolis onca. We were joined by two of Venezuela?s leading herpetologists ,Tito Barros and Gilson Rivas, who have extensive familiarity with this species, and several of their students. There?s no common name for this lizard, so I will just refer to it as the beach anole.

You might think that as the only anole to live on beaches, this lizard must possess some unique anatomical feature that adapts it to such a lifestyle. You would be right. This species sports beach footwear. Or more specifically, it lacks the sticky toepads common to all other known species of anole. The reigning hypothesis is that this species underwent an ?evolutionary reversal? as it adapted to life on the beach. Toepads are covered with millions of microscopic hairs ? not much help for traction when you?re standing on millions of tiny sand grains. So the thinking goes that it just shed them over evolutionary time.

Several surprises greeted us at our first study site on the shore of Lake Maraicaibo. First, we found few lizards at sites colleagues had recommended for their dense populations. Our initial morning foray yielded one lizard, though the afternoon session at a different site produced a half dozen more.

I thought the scarcity might be explained by our second surprise: extremely strong winds. The literature had warned that the beach anole seems to occur only in windy places. Still, we weren?t prepared for such a pummeling. And in my experience, the combination of scorching temperatures and strong, dry winds does not bode well for lizard-finding. Normally, small reptiles tend to reduce activity during such an environmental onslaught to avoid becoming dehydrated. Even an anole?s tough, scaly skin cannot prevent water loss in such conditions. But our colleagues assured us that this could not be the explanation, because the wind was normal for the area. ?That suggests these lizards have a special ability to hold onto moisture. All the more reason to study them ? if only we could find a few.

Our colleagues provided an alternative explanation for their general absence: the region is currently experiencing a very severe drought, and this, rather than the wind, could be responsible for the spotty sightings. (Whether the population has decreased or the lizards are simply hunkered down is unknown ? either option could be a result of drought conditions.)

That?s the way fieldwork plays out ? you make plans month in advance, hope that the weather cooperates, and make the most of it when it doesn?t.

And so we did, eventually finding a moderate number of lizards. But our biggest surprise was where we actually found them. Despite their billing as sand anoles, we never saw a lizard on the beach. Most were perched on or moving about the vegetation, except for a few on the ground in grassy areas. The literature reminded us that the beach anole has been reported in the vegetation in the past. But we were not expecting to find them almost exclusively off the ground and away from sandy substrates.

Nonetheless, we did make some interesting new observations about the biology of this species. Most had stomachs packed with leaves, something never reported before among the other 400 anole species. In addition, the blue coloration in the corner of their mouths is also unique among these anoles, though known in other lizards. Their differences in diet and color, combined with their sand-loving toes, make this one of the most unusual species in this evolutionarily diverse group of lizards.

But our data don?t tell us why they lost their toepads. Of course, we may be looking at the wrong time or wrong place. Maybe the lizards only use sandy surfaces during some seasons or circumstances. Or perhaps the ancestral beach anole lost its pads when it started living on sand dunes, and subsequently some populations have given up their sand-dwelling ways. Or perhaps the loss of toepads is unrelated to the ground the lizards walk on. Perhaps it has to do with the excessive windiness, though I can?t think of a good reason why it should.

You win some, you lose some. That?s what science is like: sometimes you don?t get the answers you were seeking, but instead make discoveries about something entirely different.

Source: http://scientistatwork.blogs.nytimes.com/2013/04/02/a-beach-vacation-lizard-style/?partner=rss&emc=rss

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Parties carp as Italy's "wise men" seek end to political crisis

By Naomi O'Leary and Barry Moody

ROME (Reuters) - Italian President Giorgio Napolitano expressed despair on Tuesday at fierce criticism of his latest plan to end a post-election deadlock that has raised fears of months of instability in the euro zone's third largest economy.

Two groups of "wise men" appointed by Napolitano to try to forge a policy compromise between squabbling parties to end the impasse since the February 24-25 election started work on Tuesday. Napolitano said they would report back in 8-10 days.

The 87-year-old head of state reacted angrily to suggestions from the center-right of Silvio Berlusconi that his plan, which came after all other efforts to find a government failed, were a useless waste of time that the economy could ill afford.

"After seven years I am ending my mandate in a surreal way, finding myself the subject of absurd reactions, suspicions and incomprehensible paranoias, from the harmless to the unhinged," Napolitano was quoted as saying by Corriere della Sera daily.

Italy is deep in its longest recession for 20 years and although markets have so far remained relatively sanguine about the political deadlock, the economy desperately needs a stable government to unblock decades of sluggish growth.

There are also fears Italy's borrowing costs could rise dangerously if the impasse finally starts to spook investors.

Since the election, the parties have refused to budge at all from irreconcilable positions that "made one despair of the possibility of governing this country", Napolitano said.

Napolitano appointed the commissions after Democratic Party (PD) leader Pier Luigi Bersani failed to gather enough support for a center-left led government despite a week of efforts.

The president's own attempt to dislodge the parties from entrenched positions also faltered last Friday.

The election resulted in three main blocs, none of which has enough support in parliament to govern alone. The center-left holds a majority in the lower house but not in the Senate.

On Tuesday, they restated their positions, with Bersani ruling out a "grand coalition" with the center-right but saying an early election would be "disastrous" and calling on other parties to support a limited package of reforms.

For its part, Berlusconi's People of Freedom (PDL) party said Bersani was blocking agreement.

"Obviously if this stalemate continues because the PD is thinking more of their factional interests than of the nation, the only road possible is going to the polls in June," said PDL secretary Angelino Alfano.

TWO WORKING GROUPS

The two working groups, one of which will discuss social-economic reforms and the other institutional changes such as a new electoral law, include representatives of the main center-left and center-right blocs, the head of the national statistics agency, legal experts and a senior Bank of Italy official.

Berlusconi's center-right has been particularly harsh in its criticism of Napolitano's move - unusual in a country where the president is typically treated with great deference.

Bersani on Tuesday again rejected a governing coalition with Berlusconi and said new elections would not fix Italy's problems. He also said Berlusconi's attempts to pick the new president were "unacceptable".

Napolitano's wise men idea was also criticized by populist 5-Star Movement leader Beppe Grillo who called the experts "domestic carers for democracy".

"At the end of the day what is it? A fake coalition government ruled by the president? I have seen the names but my puzzlement remains," Grillo's Senate leader Vito Crimi said.

One of the experts, constitutional judge Valerio Onida, shot backo: "In this parliament they need babysitters more than carers."

The government-forming crisis is now inextricably bound up with a vote next month by both houses of parliament and regional representatives to replace Napolitano by May 15.

Berlusconi's PDL party fears that if no agreement is reached on a government then Bersani could ally with Grillo to appoint a new president hostile to the media magnate, who is seeking immunity from a string of legal cases.

The 76-year-old billionaire is facing an imminent verdict in a trial for paying for sex with an underage prostitute as well as in his appeal against a four-year tax fraud sentence and has large business interests to protect.

Respected political commentator Massimo Franco said fears over the presidential election would explain Berlusconi's pressure for the working groups to finish quickly.

"Above all he suspects a successive phase marked by a Quirinale (presidential palace) hostile to the PDL," Franco wrote in a column in Corriere della Sera.

Napolitano, who cannot call elections in the final months of his presidency, may also be trying to draw things out so that the key decisions are taken by his successor, insiders say.

Details of what the two commissions will propose have not been announced, but they are also likely to include cutting the cost of the bloated political system and reforms to unblock Italy's notoriously stagnant growth.

The key reform is changing the much maligned electoral law, which is a major cause of the current impasse, but politicians failed to agree on new rules despite repeated promises during the outgoing technocrat government of Mario Monti.

Another election with the same law could produce a similar impasse, experts say, but such a reform of the rules would be improbable by June.

One of the members of Napolitano's commissions, center-left Senator Filippo Bubbico, said they would also discuss easing painful tax hikes imposed by the outgoing technocrat government of Mario Monti. "We will work fast," he promised.

Anger over the economic pain imposed by Monti, particularly a hated housing tax, pushed many voters to support Grillo in the election, where his group won an unprecedented 25 percent.

(Editing by Philippa Fletcher and Will Waterman)

Source: http://news.yahoo.com/italys-wise-men-seek-end-political-crisis-president-144743141.html

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