Thursday, February 28, 2013

Reuters: Science News: SpaceX cleared for cargo run to space station

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
SpaceX cleared for cargo run to space station
Mar 1st 2013, 05:19

The SpaceX Falcon 9 rocket with the Dragon capsule rests near its launching pad as it is prepared for launch at the Cape Canveral Air Force Station in Cape Canaveral, Florida February 28, 2013. REUTERS/Scott Audette

1 of 2. The SpaceX Falcon 9 rocket with the Dragon capsule rests near its launching pad as it is prepared for launch at the Cape Canveral Air Force Station in Cape Canaveral, Florida February 28, 2013.

Credit: Reuters/Scott Audette

By Irene Klotz

Fri Mar 1, 2013 12:19am EST

CAPE CANAVERAL, Fla. March 1 - A rocket built by Space Exploration Technologies was poised for launch on Friday to deliver a capsule filled with food, supplies and science experiments to the International Space Station.

Liftoff of the Falcon 9 rocket carrying a Dragon capsule from the company's leased launch pad at Cape Canaveral Air Force Station, just south of NASA's Kennedy Space Center in Florida, was set for 10:10 a.m. EST/1510 GMT Friday.

Meteorologists predicted an 80 percent chance of good weather for the launch.

The cargo run will be the second of 12 missions for privately owned Space Exploration Technologies, or SpaceX as the company is known, under a $1.6 billion NASA contract.

Following a successful test flight to the space station in May 2012, SpaceX conducted its first supply run to the orbital outpost in October. A second space freighter, built by Orbital Sciences Corp., is expected to debut this year.

NASA turned to private companies to ferry supplies to the Space Station, a $100 billion project of 15 nations, following the retirement of its shuttle fleet in 2011.

Staffed by rotating crews of six, the orbiting laboratory flies about 250 miles above the Earth.

With the shuttles grounded, NASA plans to hire private firms to fly astronauts as well as cargo, breaking Russia's monopoly on crew transport that costs more than $60 million per trip.

Mandatory government spending cuts set to go into effect Friday do not impact space station operations or supply runs, said NASA's space station program manager Mike Suffredini.

The cutbacks, however, implemented under the so-called "sequestration" initiative, will slow development of privately owned space taxis.

NASA currently has partnership agreements worth more than $1.1 billion through May 2014 with SpaceX, Boeing Co. and privately owned Sierra Nevada Corp. to develop passenger spacecraft.

Under the expected budget cuts, NASA would effectively halt space taxi development work this summer.

"Overall availability of commercial crew transportation services would be significantly delayed, thereby extending our reliance on foreign providers for crew transportation to the International Space Station," NASA administration Charles Bolden wrote in a letter last month to Senate Appropriations Committee chairwoman Barbara Mikulski.

Under sequestration, NASA expects its $17.8 billion budget to drop to $16.9 billion, Bolden said.

(Editing by Todd Eastham)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Reuters: Science News: Canada to fund non-nuclear sources for medical isotopes

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
Canada to fund non-nuclear sources for medical isotopes
Feb 28th 2013, 19:04

By Randall Palmer and David Ljunggren

OTTAWA | Thu Feb 28, 2013 2:04pm EST

OTTAWA (Reuters) - Canada expects to be able to make enough medical isotopes through non-nuclear methods by 2016 to replace those now produced by an aging reactor and better assure an uninterrupted supply for medical imaging, a government minister said on Thursday.

To that end, the federal government will fund three research institutes developing cyclotron and linear accelerator technologies for production of isotopes on a commercial scale, Natural Resources Minister Joe Oliver said.

Canada's only current source of the isotopes is a problem-plagued reactor at Atomic Energy of Canada Ltd's facility at Chalk River, Ontario. The reactor is licensed to run until 2016.

"Our challenge now is to prove that cyclotron and linear accelerator production can be commercially viable. ... We envision a future where isotope production will no longer require highly enriched uranium รข€" a weapons-grade material," he said.

The government will give a total of C$25 million ($24.3 million) to the three facilities for this goal.

Asked if there would be a gap between the end of production by the Chalk River reactor and the supplies from the other sources, Oliver said he did not think so, since the technology was proven and what remained was commercialization.

"That's been worked on for a while," he told reporters after making the announcement. "It's reached a fairly robust stage right now. We're talking about increasing the amount ... and we're comfortable we can meet those objectives by 2016."

Oliver also announced Canada wanted a private operator to run the Chalk River facility, a move that would take two years to accomplish.

The temporary closure of the Chalk River reactor for safety reasons in 2007 and then again from May 2009 to August 2010 caused a medical challenge and a political furor as the government scrambled to find isotope replacements internationally.

The closures dealt a blow to Nordion Inc, which as a major supplier of isotopes relied on Chalk River. Nordion had no immediate comment on Thursday's announcement.

AECL had built two more modern prototype reactors to make isotopes but eventually mothballed them after a series of problems. An arbitration panel last year rejected Nordion's claim for damages against AECL.

Oliver said the government was not seeking to close down or sell the Chalk River nuclear laboratories. In October 2011 Canada sold AECL's Candu nuclear reactor division to a subsidiary of SNC Lavalin Group Inc.

(Additional reporting by David Ljunggren; Editing by Frank McGurty and Kenneth Barry)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Reuters: Science News: "Mind melds" move from science fiction to science in rats

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
"Mind melds" move from science fiction to science in rats
Feb 28th 2013, 16:39

A split screen image shows an encoder rat in Natal, Brazil and decoder rat in a lab at Duke University, North Carolina. REUTERS/Nicoleilis, Duke University/Handout

A split screen image shows an encoder rat in Natal, Brazil and decoder rat in a lab at Duke University, North Carolina.

Credit: Reuters/Nicoleilis, Duke University/Handout

By Sharon Begley

NEW YORK | Thu Feb 28, 2013 9:52am EST

NEW YORK (Reuters) - The scientists call it a "brain link," and it is the closest anyone has gotten to a real-life "mind meld": the thoughts of a rat romping around a lab in Brazil were captured by electronic sensors and sent via Internet to the brain of a rat in the United States.

The result: the second rat received the thoughts of the first, mimicking its behavior, researchers reported on Thursday in Scientific Reports, a journal of the Nature Publishing Group.

Adding to its science-fiction feel, the advance in direct brain-to-brain communication could lay the foundation for what Duke University Medical Center neurobiologist Miguel Nicolelis, who led the research, calls an "organic computer" in which multiple brains are linked to solve problems solo brains can't.

If that sounds like an ethical minefield, several experts think so too, especially since Nicolelis is now working on brain-to-brain communication between monkeys.

"Having non-human primates communicate brain-to-brain raises all sorts of ethical concerns," said one neuroscientist, who studies how brains handle motor and sensory information, but who asked not to be named. "Reading about putting things in animals' brains and changing what they do, people rightly get nervous," envisioning battalions of animal soldiers - or even human soldiers - whose brains are remotely controlled by others.

That could make drone warfare seem as advanced as muskets.

Nicolelis's lab received $26 million from the Pentagon's Defense Advanced Research Projects Agency (DARPA) for work on brain-machine interfaces, as this field is called.

The linked rat brains in the study built on 15 years of research in brain-machine interfaces. These interfaces take electrical signals generated from the brains of severely-paralyzed people and translate them into commands that move a mechanical arm, a computer cursor or even the patient's own arm.

Such work led Nicolelis to ask, can one brain decode the electrical signals generated by another?

The answer - at least for rats - was yes.

CODED SIGNALS

In one experiment, the Duke researchers trained rats destined to be message senders, or encoders, to press a lever when a red light above them turned on. Doing so earned the animals a sip of water. Rats intended to be message receivers, or decoders, were trained to press a lever when the scientists electrically stimulated their brains via implants.

The scientists next connected the rats' brains directly, inserting microelectrodes roughly one-hundredth the width of a human hair. Now when an encoding rat saw the red light and pressed the lever, its brain activity sped directly into the brains of seven decoder rats.

The decoders did not see a red light. Nevertheless, they usually pressed the correct lever and earned their after-work libation. The encoder rats got the same treat, reaping the rewards of their partners' success.

The encoder rat did not get that reward if a decoder rat goofed. In that case, the encoder rat, apparently realizing what had happened, seemed to concentrate harder on its task: it decided more quickly to choose the correct lever and quashed extraneous thoughts so as not to muddy the signal with, perhaps, daydreams about escaping the lab or pressing the wrong lever.

As a result, the signal got louder and sharper, and the decoder rats made fewer mistakes.

"The encoder basically changed its brain function to make the signal cleaner and easier for its partner to get it right," Nicolelis said.

Videos of the experiments are available at www.nicolelislab.net, and the paper is at dx.doi.org/10.1038/srep01319

The researchers also trained pairs of rats to distinguish a narrow opening from a wide one using their whiskers. The animals learned to poke a water port on the left side of the chamber with their nose if they sensed a narrow opening, and a port on the right if they sensed a wide opening.

As with the lever press, when the brain waves that signified "narrow door" traveled from the encoder rat to the decoder rat, the latter usually poked the correct port.

In these experiments, the rats were in Nicolelis's lab at Duke and their brains were connected by long, thin wires. To show the reach of brain waves, the scientists re-ran the experiments with encoder rats in Natal, Brazil, and decoder rats at Duke. The brain signals traveled over the Internet. But even with the resulting noise, the mind melds usually succeeded.

'COMPLETE FANTASY'

Some other researchers were not impressed. For one thing, the Internet aspect is not novel: in a previous study, electrical activity in the brain of a monkey at Duke was sent via the Internet and controlled a robot arm in Japan.

Neurobiologist Andrew Schwartz of the University of Pittsburgh, a leader in the field of brain-computer interactions, said that "from a scientific/engineering point of view, this is of limited interest." Brain-machine interfaces "have moved far beyond this."

"It's cool that the stimulus came from another brain" rather than an electrical device, agreed bioengineer Douglas Weber of Pittsburgh. But "many labs have shown that animals can detect electrical stimuli delivered to the brain. This paper simply shows that the animals can detect electrical stimuli... from another rat's brain. There is nothing unexpected or surprising."

The Duke team sees the study as a step toward what lead author Miguel Pais-Vieira calls "a workable network of animal brains." They are currently trying to link four rats' brains and (separately) two monkeys' brains, each in what Nicolelis calls a "brain-net."

"Wiring brains together to accomplish something useful strikes me as a fantasy," said neuroscientist Lee Miller of the Feinberg School of Medicine at Northwestern University, whose brain-machine research is intended to help paralyzed patients move.

Asked how likely it is that one day human brains would be linked, Nicolelis said: "I wouldn't mind if, 100 years from now, people say two rats started human brain nets."

(Reporting by Sharon Begley; Editing by Jilian Mincer and Claudia Parsons)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Reuters: Science News: China's next manned space mission to launch this summer

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
China's next manned space mission to launch this summer
Feb 28th 2013, 08:04

Chinese astronauts Jing Haipeng (C), Liu Wang (R) and Liu Yang, China's first female astronaut, wave in front of a picture of the first astronaut Yang Liwei during a departure ceremony at Jiuquan Satellite Launch Center, Gansu province, June 16, 2012.

Credit: Reuters/Jason Lee

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Wednesday, February 27, 2013

Reuters: Science News: Veteran explorer stakes Russia's claim over the Arctic

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
Veteran explorer stakes Russia's claim over the Arctic
Feb 27th 2013, 18:40

Russia's President Vladimir Putin (L) applauds after he decorated Russian State Duma member Artur Chilingarov, the leader of the 2007 Arctic deep-water expedition, with the Hero's Golden Star during a ceremony in Moscow's Kremlin in this file photo taken February 21, 2008. REUTERS/Pool

Russia's President Vladimir Putin (L) applauds after he decorated Russian State Duma member Artur Chilingarov, the leader of the 2007 Arctic deep-water expedition, with the Hero's Golden Star during a ceremony in Moscow's Kremlin in this file photo taken February 21, 2008.

Credit: Reuters/Pool

By Gabriela Baczynska

MOSCOW | Wed Feb 27, 2013 1:40pm EST

MOSCOW (Reuters) - Russian polar explorer Artur Chilingarov made his name in the Soviet Union with a daring rescue of an ice-bound ship, then won international fame for planting Russia's flag under the ice cap, angering governments with rival claims over the Arctic.

Now at the age of 73, rather than folding away his maps, he is spearheading President Vladimir Putin's diplomatic push to secure more of the mineral-rich region.

"We don't want anything that belongs to anybody else, but if we prove it's ours, give it to us," a cigar-puffing Chilingarov told Reuters in an interview in his Moscow office dominated by a wall map of the Arctic seabed's topography.

On his desk stood a 10-cm (four-inch) high replica of the titanium Russian tricolor that he planted at the North Pole during his 2007 dive.

Huge reserves of Arctic oil and natural gas are expected to become more accessible as climate change melts the ice and technology advances.

For Putin, the race for the Arctic's natural wealth is a matter of national and personal pride at the start of his six-year, third term as president, and would be a victory from which he could reap political dividends.

Competition is fierce, with Norway, the United States, Canada and Denmark also seeking to secure their interests in the Arctic and where international energy majors such as ConocoPhillips and Statoil hope to succeed with potentially lucrative offshore projects.

After the failure of a first attempt to secure an additional 1.2 million square km (463,000 square miles) of the Arctic shelf, Russia intends to present more evidence to support its claim to the United Nations by the end of this year.

"Our economy today is largely based on what was developed in the Arctic regions - oil, gas, diamonds, gold, apatites - from Norilsk to Chukotka, thanks to the Soviet Union's policies of exploring and producing there," Chilingarov said.

"But back then we did not go into the sea. Resources are not endless and our task now is to leave future generations the same chances of economic stability as the Soviet Union left us."

NEW STRATEGY

The map on Chilingarov's wall was the result of 30 years of work by Soviet and then Russian scientists and was central to Moscow's first attempt in 2001 to win U.N. recognition that its Arctic shelf extends up to the North Pole.

Russia says an underwater mountain range known as the Lomonosov Ridge, which stretches across the Arctic Sea, is part of its own Eurasian landmass.

But the U.N. was not convinced and asked for more research to back the claim, rejected by Canada and Denmark, which say the formation is a geographical extension of their own land.

Chilingarov said the presentation of new evidence to back up Russia's claim was now a priority for the Kremlin.

"This is a very important task supported by the president. The aim is to do it by the end of this year," said the explorer. "We spare no efforts on expeditions to prove that Russia sits on Arctic resources ... We are very serious, very serious about this."

Russia puts its total shelf oil and gas reserves, from the Arctic to the Caspian Sea, at 100 billion tonnes of oil equivalent - enough to power the world for more than 20 years.

A new strategy for the Arctic, approved by Putin this month, underlines the importance of tapping more energy resources in a country whose $2.1 trillion economy is overly reliant on exports of energy resources.

Oil and gas sales now account for around half of Russia's budget revenues and commodities make up some 90 percent of Russian exports.

The cost of developing any new energy fields will be great.

Russia's flagship gas project on the Arctic shelf, the Gazprom-controlled Shtokman, is already on hold because of cost overruns after years of failed attempts to advance work at the field holding nearly 4 trillion cubic meters of gas.

Other countries, meanwhile, are pressing their own claims. A Danish expedition last year also collected data to support its claim to a vast tract in the Arctic including the North Pole.

RICH REWARDS

The rewards for the winners are potentially huge, with the U.S. Geological Survey estimating that 30 percent of the world's undiscovered natural gas and 15 percent of oil is in the Arctic.

Several companies, including Russia's Rosneft, Norway's Statoil and U.S.-based Exxon Mobil are already getting ready to drill in areas of melting sea ice, despite the risks, technological difficulties and costs.

After Chilingarov's North Pole dive in 2007, he was officially declared a hero of Russia, an award he added to the title of hero of the Soviet Union that he had won for the 1980s rescue operation, and his face still adorns postage stamps.

He is one of only four people to have been awarded both titles, and one of only two still alive.

"This is not the end of my expedition activity, but this was the pinnacle of it," Chilingarov said of the 2007 dive.

There is also an environmental challenge to face. Many environmental groups say the rush for the Arctic's natural resources risks destroying its fragile ecosystems, already under threat from climate change, as there are no adequate impact studies or emergency plans in case of a leak.

Last August, Greenpeace activists scaled Gazprom's Prirazlomnaya oil rig - Russia's first offshore oil development in the Arctic - to protest against drilling there and draw attention to the destruction of the area.

"As a polar explorer, obviously, I am for leaving the Arctic untouched. As a politician, I understand that Russia lives on its natural resources and should go on developing them," said Chilingarov.

(Editing by Timothy Heritage)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Reuters: Science News: Analysis: Emerging deadly virus demands swift sleuth work

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
Analysis: Emerging deadly virus demands swift sleuth work
Feb 27th 2013, 13:34

A electron microscope image of a coronavirus is seen in this undated picture provided by the Health Protection Agency in London February 19, 2013. REUTERS/Health Protection Agency/Handout

1 of 2. A electron microscope image of a coronavirus is seen in this undated picture provided by the Health Protection Agency in London February 19, 2013.

Credit: Reuters/Health Protection Agency/Handout

By Kate Kelland, Health and Science Correspondent

LONDON | Wed Feb 27, 2013 8:34am EST

LONDON (Reuters) - The emergence of a deadly virus previously unseen in humans that has already killed half those known to be infected requires speedy scientific detective work to figure out its potential.

Experts in virology and infectious diseases say that while they already have unprecedented detail about the genetics and capabilities of the novel coronavirus, or NCoV, what worries them more is what they don't know.

The virus, which belongs to the same family as viruses that cause the common cold and the one that caused Severe Acute Respiratory Syndrome (SARS), emerged in the Middle East last year and has so far killed seven of the 13 people it is known to have infected worldwide.

Of those, six have been in Saudi Arabia, two in Jordan, and others in Britain and Germany linked to travel in the Middle East or to family clusters.

"What we know really concerns me, but what we don't know really scares me," said Michael Osterholm, director of the U.S.-based Center for Infectious Disease Research and Policy and a professor at the University of Minnesota.

Less than a week after identifying NCoV in September last year in a Qatari patient at a London hospital, scientists at Britain's Health Protection Agency had sequenced part of its genome and mapped out a so-called "phylogenetic tree" - a kind of family tree - of its links.

Swiftly conducted scientific studies by teams in Switzerland, Germany and elsewhere have found that NCoV is well adapted to infecting humans and may be treatable medicines similar to the ones used for SARS, which emerged in China in 2002 and killed a tenth of the 8,000 people it infected.

"Partly because of the way the field has developed post-SARS, we've been able to get onto this virus very early," said Mike Skinner, an expert on coronaviruses from Imperial College London. "We know what it looks like, we know what family it's from and we have its complete gene sequence."

Yet there are many unanswered questions.

SPOTLIGHT ON SAUDI ARABIA, JORDAN

"At the moment we just don't know whether the virus might actually be quite widespread and it's just a tiny proportion of people who get really sick, or whether it's a brand new virus carrying a much greater virulence potential," said Wendy Barclay, a flu virologist, also at Imperial College London.

To have any success in answering those questions, scientists and health officials in affected countries such as Saudi Arabia and Jordan need to conduct swift and robust epidemiological studies to find out whether the virus is circulating more widely in people but causing milder symptoms.

This would help establish whether the 13 cases seen so far are the most severe and represent "the tip the iceberg", said Volker Thiel of the Institute of Immunobiology at Kantonal Hospital in Switzerland, who published research this month showing NCoV grows efficiently in human cells.

Scientists and health officials in the Middle East and Arab Peninsular also need to collaborate with colleagues in Europe, where some NCoV cases have been treated and where samples have gone to specialist labs, to try to pin down the virus' source.

"ONE BIG VIROLOGICAL BLENDER"

Initial scientific analysis by laboratory scientists at Britain's Health Protection Agency (HPA) - which helped identify the virus in a Qatari patient in September last year - found that NCoV's closest relatives are most probably bat viruses.

It is not unusual for viruses to jump from animals to humans and mutate in the process - high profile examples include the human immunodeficiency virus (HIV) that causes AIDS and the H1N1 swine flu which caused a pandemic in 2009 and 2010.

Yet further work by a research team at the Robert Koch Institute at Germany's University of Bonn now suggests it may have come through an intermediary - possibly goats.

In a detailed case study of a patient from Qatar who was infected with NCoV and treated in Germany, researchers said the man reported owning a camel and a goat farm on which several goats had been ill with fevers before he himself got sick.

Osterholm noted this, saying he would "feel more comfortable if we could trace back all the cases to an animal source".

If so, it would mean the infections are just occasional cross-overs from animals, he said - a little like the sporadic cases of bird flu that continue to pop up - and would suggest the virus has not yet established a reservoir in humans.

Yet recent evidence from a cluster of cases in a family in Britain strongly suggests NCoV can be passed from one person to another and may not always come from an animal source.

An infection in a British man who had recently travelled to Saudi Arabia and Pakistan, reported on February 11, was swiftly followed by two more British cases in the same family in people who had no recent travel history in the Middle East.

The World Health Organization says the new cases show the virus is "persistent" and HPA scientists said the cluster provided "strong evidence" that NCoV, which like other coronaviruses probably spreads in airborne droplets, can pass from one human to another "in at least some circumstances".

Despite this, Ian Jones, a professor of virology at Britain's University of Reading, said he believes "the most likely outcome for the current infections is a dead end" - with the virus petering out and becoming extinct.

Others say they fear that is unlikely.

"There's nothing in the virology that tells us this thing is going to stop being transmitted," said Osterholm. "Today the world is one big virological blender. And if it's sustaining itself (in humans) in the Middle East then it will show up around the rest of the world. It's just a matter of time."

(Editing by Anna Willard)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Tuesday, February 26, 2013

Reuters: Science News: Crick's letter about DNA discovery to be sold at auction

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
Crick's letter about DNA discovery to be sold at auction
Feb 26th 2013, 22:45

Francis Crick (R) with James D. Watson, co-discoverers of the structure and function of DNA, are shown in this image taken circa 1953 in this image released to Reuters on February 26, 2013.

Credit: Reuters/Christie's Images LTD. 2013/Handout

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Monday, February 25, 2013

Reuters: Science News: Seals take scientists to Antarctic's ocean floor

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
Seals take scientists to Antarctic's ocean floor
Feb 26th 2013, 03:54

A Southern Ocean elephant seal wears a sensor on its head as it sleeps on an island in the Southern Ocean, Antarctica in this handout photo taken February 27, 2012. Elephant seals wearing head sensors and swimming deep beneath Antarctic ice have helped scientists better understand how the ocean's coldest, deepest waters are formed, providing vital clues to understanding its role in the world's climate. The tagged seals, along with sophisticated satellite data and moorings in ocean canyons, all played a role in providing data from the extreme Antarctic environment, where observations are very rare and ships could not go, said researchers at the Antarctic Climate & Ecosystem CRC in Tasmania. The sensor weighs about 100 to 200 grams and has a small satellite relay which transmits data on a daily basis. Picture taken February 27, 2012. REUTERS/Mark Hindell/Antarctic Climate and Ecosystems CRC/Handout

1 of 4. A Southern Ocean elephant seal wears a sensor on its head as it sleeps on an island in the Southern Ocean, Antarctica in this handout photo taken February 27, 2012. Elephant seals wearing head sensors and swimming deep beneath Antarctic ice have helped scientists better understand how the ocean's coldest, deepest waters are formed, providing vital clues to understanding its role in the world's climate. The tagged seals, along with sophisticated satellite data and moorings in ocean canyons, all played a role in providing data from the extreme Antarctic environment, where observations are very rare and ships could not go, said researchers at the Antarctic Climate & Ecosystem CRC in Tasmania. The sensor weighs about 100 to 200 grams and has a small satellite relay which transmits data on a daily basis. Picture taken February 27, 2012.

Credit: Reuters/Mark Hindell/Antarctic Climate and Ecosystems CRC/Handout

By Pauline Askin

SYDNEY | Mon Feb 25, 2013 10:54pm EST

SYDNEY (Reuters) - Elephant seals wearing head sensors and swimming deep beneath Antarctic ice have helped scientists better understand how the ocean's coldest, deepest waters are formed, providing vital clues to understanding its role in the world's climate.

The tagged seals, along with sophisticated satellite data and moorings in ocean canyons, all played a role in providing data from the extreme Antarctic environment, where observations are very rare and ships could not go, said researchers at the Antarctic Climate & Ecosystem CRC in Tasmania.

Scientists have long known of the existence of "Antarctic bottom water," a dense, deep layer of water near the ocean floor that has a significant impact on the movement of the world's oceans.

Three areas where this water is formed were known of, and the existence of a fourth suspected for decades, but the area was far too inaccessible, until now, thanks to the seals.

"The seals went to an area of the coastline that no ship was ever going to get to," said Guy Williams, ACE CRC Sea Ice specialist and co-author of the study.

"This is a particular form of Antarctic water called Antarctic bottom water production, one of the engines that drives ocean circulation," he told Reuters. "What we've done is found another piston in that engine."

Southern Ocean Elephant seals are the largest of all seals, with males growing up to six meters (20 feet) long and weighing up to 4,000 kilograms (8,800 lbs).

Twenty of the seals were deployed from Davis Station in east Antarctica in 2011 with a sensor, weighing about 100 to 200 grams, on their head. Each of the sensors had a small satellite relay which transmitted data on a daily basis during the five to 10 minute intervals when the seals surfaced.

"We get four dives worth of data a day but they're actually doing up to 60 dives," he said.

"The elephant seals ... went to the very source and found this very cold, very saline dense water in the middle of winter beneath a polynya, which is what we call an ice factory around the coast of Antarctica," Williams added.

Previous studies have shown that there are 50-year-long trends in the properties of the Antarctic bottom water, and Williams said the latest study will help better assess those changes, perhaps providing clues for climate change modeling.

"Several of the seals foraged on the continental slope as far down as 1,800 meters (1.1 miles), punching through into a layer of this dense water cascading down the abyss," he said in a statement. "They gave us very rare and valuable wintertime measurements of this process."

(Reporting by Pauline Askin, Editing by Elaine Lies and Michael Perry)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Saturday, February 23, 2013

Reuters: Science News: White House directs open access for government research

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
White House directs open access for government research
Feb 24th 2013, 03:23

President Barack Obama (L) gets direction from White House science adviser John Holdren during an event to look at the stars with local middle school students and astronomers from across the country on the South Lawn at the White House in Washington, October 7, 2009. REUTERS/Jim Young

President Barack Obama (L) gets direction from White House science adviser John Holdren during an event to look at the stars with local middle school students and astronomers from across the country on the South Lawn at the White House in Washington, October 7, 2009.

Credit: Reuters/Jim Young

By Mark Felsenthal

WASHINGTON | Sat Feb 23, 2013 10:23pm EST

WASHINGTON (Reuters) - The White House has moved to make the results of federally funded research available to the public for free within a year, bowing to public pressure for unfettered access to scholarly articles and other materials produced at taxpayers' expense.

"Americans should have easy access to the results of research they help support," John Holdren, the director of the White House Office of Science and Technology Policy, wrote on the White House website.

An online petition on the White House website demanding free access over the Internet to scientific journal articles arising from taxpayer-funded research drew 65,704 signatures.

The directive comes amid a changing landscape for publishing and the availability of information due to the Internet.

Scientists have long published the results of their work in scholarly journals, and many such publications have warned that open access would destroy them and the function they provide the scientific community.

The White House move also came some six weeks after the suicide of Internet openness activist Aaron Swartz, who was renowned for making a trove of information freely available to the public.

Swartz ran into trouble in 2011 when he was indicted by a federal grand jury on charges related to allegedly stealing millions of academic articles and journals from a digital archive at the Massachusetts Institute of Technology.

The activist, who pleaded not guilty to all counts, faced a lengthy prison sentence and a hefty fine if convicted in a trial that was set for later this year.

Swartz's family and supporters blamed prosecutors for overreaching in his case, and his suicide drew attention to questions about the 1984 U.S. computer fraud law, much of which was written before the Internet.

Holdren said the decision to provide greater access took the concerns of scientific journals into account.

"We wanted to strike the balance between the extraordinary public benefit of increasing public access to the results of federally-funded scientific research and the need to ensure that the valuable contributions that the scientific publishing industry provides are not lost," he said.

Federal agencies are permitted a 12-month embargo time before offering access and can petition for a longer lag.

The openness directive applies to those agencies with more than $100 million in research and development expenditures. Agencies must develop plans to open data to the public within six months, and those plans will be vetted by the White House.

An industry group said the White House approach is a "reasonable, balanced" solution because it recognizes the value of publishers.

"The OSTP takes a fair path that would enhance access for the public, acknowledge differences among agencies and scientific disciplines and recognize the critical role publishers play in vetting, producing, establishing and preserving the integrity of scientific works," Tom Allen, chief executive of the Association of American Publishers, said in a statement.

But critics of the new policy said its value to the public and to scientists is undercut by the 12-month embargo.

"We are working on the cutting edge of the science. I want to read a new paper NOW, not in 1 year," Vittorio Saggiomo, a chemist at the University of Groningen in the Netherlands, wrote in an online chat about the announcement.

(Reporting By Mark Felsenthal; Editing by Paul Simao)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Thursday, February 21, 2013

Reuters: Science News: India to launch mission to Mars this year, says president

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
India to launch mission to Mars this year, says president
Feb 21st 2013, 13:20

This image of the Earth was taken by ISRO's Chandrayaan-1 mission while on its way to the Moon on 29 October 2008, at 03:30 CET.

Credit: Reuters/ESA/Cluster/Handout.

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Wednesday, February 20, 2013

Reuters: Science News: "Vulcan" has big lead in bid to name Pluto's newly discovered moons

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
"Vulcan" has big lead in bid to name Pluto's newly discovered moons
Feb 21st 2013, 00:04

Wed Feb 20, 2013 7:04pm EST

(Reuters) - "Star Trek" star William Shatner and tens of thousands of the show's fans are leading a charge to name one of Pluto's newly discovered moons after the character Spock's home planet.

Shatner, who played Captain James T. Kirk on the Starship Enterprise on the program launched in 1966, proposed the name earlier this month in response to an appeal from scientists for help in choosing the names of two newly discovered Pluto moons.

Vulcan is among 21 names in the running in an online poll organized by the California-based SETI Institute, whose team of astronomers discovered the moons.

As of Wednesday, Vulcan was the clear front runner, receiving more than 100,000 out of more than 330,000 votes cast.

Shatner, who starred along with Leonard Nimoy, who portrayed the Vulcan science officer Spock on the long-running TV sci-fi show, rallied support for Vulcan on Wednesday on his Twitter account, writing: "We are approaching 120K votes for Vulcan on PlutoRocks.com! Have you voted today?"

Until now, the two moons, each of which are about 15 miles to 20 miles wide, have been known as P4 and P5. The P4 moon was discovered in 2011 and P5 a year later.

Before the discoveries, astronomers had identified and named three of Pluto's moons - Charon, Nix and Hydra.

Voting for the names of the new moons ends on February 25. The selected names will be submitted to the International Astronomical Union (IAU) for consideration.

"Let's hope the IAU thinks Vulcan is a good name," Shatner said in another tweet.

(Reporting by Kevin Gray; Editing by Todd Eastham)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Reuters: Science News: NASA Mars rover ready to eat, analyze rock powder

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
NASA Mars rover ready to eat, analyze rock powder
Feb 20th 2013, 23:46

The first sample of powdered rock from Mars extracted by the NASA's Curiosity rover drill is pictured in this February 20, 2013 NASA handout photo. REUTERS/NASA/JPL-Caltech/MSSS/Handout

The first sample of powdered rock from Mars extracted by the NASA's Curiosity rover drill is pictured in this February 20, 2013 NASA handout photo.

Credit: Reuters/NASA/JPL-Caltech/MSSS/Handout

By Irene Klotz

CAPE CANAVERAL, Florida | Wed Feb 20, 2013 6:46pm EST

CAPE CANAVERAL, Florida (Reuters) - NASA's Mars rover Curiosity, dispatched to learn if the planet ever had ingredients for life, drilled its first bit of powder from inside a potentially water-formed ancient rock, scientists said on Wednesday.

The robotic geology station, which landed inside a giant impact basin on August 6 for a two-year mission, transferred about a tablespoon of rock powder from its drill into a scoop, pictures relayed by the rover Wednesday showed.

"We're all very happy to get this confirmation and relieved that the drilling was a complete success," Curiosity engineer Scott McCloskey of NASA's Jet Propulsion Laboratory in Pasadena, California, told reporters on a conference call.

On February 8, the rover used its powerful drill, the first instrument of its type to be sent to Mars, to bore inside a flat, veined piece of bedrock, which appears to contain minerals formed by flowing water.

The sample, retrieved from at least 2 inches beneath the surface of the rock, will be sieved and portions of it processed inside two onboard science instruments.

The gray powder is strikingly different than the ubiquitous red dust that covers the planet's surface, a result of oxidation from solar ultraviolet radiation.

"Having a rock-drilling capability on a rover is a significant advancement," said Louise Jandura, chief engineer for Curiosity's sample system.

"It allows us to go beyond the surface layer of the rock, unlocking a kind of time capsule of evidence about the state of Mars going back 3 or 4 billion years," Jandura told reporters.

The drill is the last of Curiosity's 10 science instruments to be tested since the rover landed inside Gale Crater, located near the planet's equator.

The site was selected because of a three-mile (5-km) high mound of what appears to be layered sediments rising from the crater's floor.

Rather than driving directly over to the mountain, scientists decided to explore an area in the opposite direction that showed intriguing signs of past water.

Water is believed to be a key ingredient for life.

"The rocks in this area have a really rich geologic history and they have the potential to give us information about multiple interactions of water and rock," said Curiosity scientist Joel Hurowitz, also with the Jet Propulsion Laboratory.

The fine-grained rocks are filled with veins and spherical deposits, including what appears to be calcium sulfate, a mineral which forms on Earth when water flows through fractures in rock. Mars is the planet in our solar system most like Earth.

"When you find exactly these sorts of conditions on Earth ... and everything still goes right, it's still an accident of fate to preserve organics," Curiosity's lead scientist John Grotzinger of the California Institute of Technology in Pasadena told Reuters.

"So we'll have to separate at some point the pursuit of what may have been a habitable environment from what may or may not be an environment that preserves organics," he said.

"Obviously we're interested in the organics รข€¦ but right now we're sort of on the pathway to hopefully characterizing this place as a habitable environment," Grotzinger said.

(Editing by Kevin Gray and Stacey Joyce)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

Reuters: Science News: Mini planet found far beyond Earth's solar system

Reuters: Science News
Reuters.com is your source for breaking news, business, financial and investing news, including personal finance and stocks. Reuters is the leading global provider of news, financial information and technology solutions to the world's media, financial institutions, businesses and individuals. // via fulltextrssfeed.com
Mini planet found far beyond Earth's solar system
Feb 20th 2013, 22:23

NASA's artist's illustration compares the planets in the Kepler-37 system to the moon and planets in the solar system. NASA's Kepler mission has discovered a new planetary system that is home to the smallest planet yet found around a star like our sun, approximately 210 light-years away in the constellation Lyra. The smallest planet, Kepler-37b, is slightly larger than our moon, measuring about one-third the size of Earth. Kepler-37c, the second planet, is slightly smaller than Venus, measuring almost three-quarters the size of Earth. Kepler-37d, the third planet, is twice the size of Earth. A ''year'' on these planets is very short. Kepler-37b orbits its host star every 13 days at less than one-third the distance Mercury is to the sun. The other two planets, Kepler-37c and Kepler-37d, orbit their star every 21 and 40 days. All three planets have orbits lying less than the distance Mercury is to the sun, suggesting that they are very hot, inhospitable worlds. REUTERS/ NASA/Ames/JPL-Caltech/Handout

NASA's artist's illustration compares the planets in the Kepler-37 system to the moon and planets in the solar system. NASA's Kepler mission has discovered a new planetary system that is home to the smallest planet yet found around a star like our sun, approximately 210 light-years away in the constellation Lyra. The smallest planet, Kepler-37b, is slightly larger than our moon, measuring about one-third the size of Earth. Kepler-37c, the second planet, is slightly smaller than Venus, measuring almost three-quarters the size of Earth. Kepler-37d, the third planet, is twice the size of Earth. A ''year'' on these planets is very short. Kepler-37b orbits its host star every 13 days at less than one-third the distance Mercury is to the sun. The other two planets, Kepler-37c and Kepler-37d, orbit their star every 21 and 40 days. All three planets have orbits lying less than the distance Mercury is to the sun, suggesting that they are very hot, inhospitable worlds.

Credit: Reuters/ NASA/Ames/JPL-Caltech/Handout

By Irene Klotz

CAPE CANAVERAL, Florida | Wed Feb 20, 2013 5:23pm EST

CAPE CANAVERAL, Florida (Reuters) - - Astronomers have found a mini planet beyond our solar system that is the smallest of more than 800 extra-solar planets discovered, scientists said on Wednesday.

The planet, known as Kepler-37b, is one of three circling a yellow star similar to the sun that is located in the constellation Lyra, about 210 light years away. One light year is about 6 trillion miles (10 trillion km).

"We see very large planets and they're uncommon. Earth-sized planets seen to be pretty common, so our guess is that small planets must be even more common," said Thomas Barclay, with NASA's Ames Research Center in Mountain View, California.

The smaller the planet, the more difficult it is to find.

Kepler-37b, as well as two sibling planets, were discovered with a NASA space telescope of the same name, which studies light from about 150,000 sun-like stars.

The Kepler telescope works by detecting slight dips in the amount of light coming from target stars caused by orbiting planets passing by, or transiting, relative to the observatory's line of sight. The smaller the planet, the less pronounced the dip.

Of the 833 confirmed planets found beyond the solar system, 114 were discovered by the Kepler science team, according to the project's website. Nearly 3,000 more Kepler candidate planets are being analyzed.

Planets located in "habitable zones" around their host stars, where water can exist on their surfaces, are of particular interest. Water is believed to be necessary for life.

A planet positioned about where Earth orbits the sun would take a year to fly around its parent star. At least two, and preferably three or more, orbits are needed to confirm that a transit spotted by the Kepler telescope is indeed a planet and not a star flare or some other phenomenon.

Kepler-37b flies about 10 times closer to its star than Earth circles the sun, which gives it a surface temperature of about 800 degrees Fahrenheit (427 degrees Celsius).

"This particular one is nowhere near habitable," University of Florida astronomer Eric Ford said.

Mercury is the closet planet to the sun in our solar system, so scientists compared Kepler-37b to a mini Mercury.

The little planet, which is slightly larger than Earth's moon, has two somewhat larger siblings. Kepler-37c, which is slightly smaller than Venus, circles the trio's parent star in 21 days and Kepler-37d, about twice the size of Earth, orbits in 40 days.

The whole system would fit within the orbit of Mercury, which circles the sun in 88 days.

"When we first found exo-planets, they were all much larger than anything we have in the inner solar system. We didn't know of anything that was smaller. This is the first time we've been able to probe the smallest range, smaller than anything we have in our solar system," Barclay said.

The research was published in this week's Nature.

(Editing by Jane Sutton and Stacey Joyce)

  • Link this
  • Share this
  • Digg this
  • Email
  • Reprints

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions
Read more »

 
Great HTML Templates from easytemplates.com.