Thursday, September 27, 2012

Reuters: Science News: Mars rover finds first evidence of water: a river of it

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Mars rover finds first evidence of water: a river of it
Sep 28th 2012, 00:33

1 of 5. This set of NASA handout images compares the Link outcrop of rocks on Mars (L) with similar rocks seen on Earth (R). The image of Link taken September 2, 2012 and released September 27, 2012, was obtained by NASA's Curiosity rover and shows rounded gravel fragments, or clasts, up to a couple inches (few centimeters), within the rock outcrop.

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

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Reuters: Science News: Mars rover finds first evidence of water: a river of it

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Mars rover finds first evidence of water: a river of it
Sep 27th 2012, 21:37

1 of 5. This set of NASA handout images compares the Link outcrop of rocks on Mars (L) with similar rocks seen on Earth (R). The image of Link taken September 2, 2012 and released September 27, 2012, was obtained by NASA's Curiosity rover and shows rounded gravel fragments, or clasts, up to a couple inches (few centimeters), within the rock outcrop.

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

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Wednesday, September 26, 2012

Reuters: Science News: New "extreme" Hubble shows deepest view yet of night sky

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New "extreme" Hubble shows deepest view yet of night sky
Sep 27th 2012, 03:26

A new, improved portrait of Hubble's deepest-ever view of the universe, called the eXtreme Deep Field, or XDF, which shows a small area of space in the constellation Fornax, created using Hubble Space Telescope data from 2003 and 2004, is seen in this composite image released to Reuters on September 25, 2012. By collecting faint light over many hours of observation, it revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the universe ever taken at that time, according to the news release.

Credit: Reuters/NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team/Handout

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Reuters: Science News: New "extreme" Hubble shows deepest view yet of night sky

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New "extreme" Hubble shows deepest view yet of night sky
Sep 26th 2012, 10:28

A new, improved portrait of Hubble's deepest-ever view of the universe, called the eXtreme Deep Field, or XDF, which shows a small area of space in the constellation Fornax, created using Hubble Space Telescope data from 2003 and 2004, is seen in this composite image released to Reuters on September 25, 2012. By collecting faint light over many hours of observation, it revealed thousands of galaxies, both nearby and very distant, making it the deepest image of the universe ever taken at that time, according to the news release.

Credit: Reuters/NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R. Bouwens (Leiden University), and the HUDF09 Team/Handout

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Tuesday, September 25, 2012

Reuters: Science News: New 'extreme' Hubble shows deepest view yet of night sky

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New 'extreme' Hubble shows deepest view yet of night sky
Sep 25th 2012, 22:25

By Irene Klotz

Cape Canaveral, Florida | Tue Sep 25, 2012 6:25pm EDT

Cape Canaveral, Florida (Reuters) - Piecing together 10 years of Hubble Space Telescope images, astronomers on Tuesday unveiled the deepest view yet of a small sliver of the night sky, revealing a kaleidoscope of galaxies and other celestial objects.

The Hubble eXtreme Deep Field, or XDF, adds another 5,500 galaxies to Hubble's 2003 and 2004 view into a tiny patch of the farthest universe.

Hubble returned to the same target more than 50 times over the past decade, racking up an additional 2 million seconds of exposure time. The most distant objects found date back to about 500 million years after the universe's formation some 13.7 billion years ago.

The early universe was a violent place, filled with colliding and merging galaxies that radiate in bright blue light, a telltale sign of new star formation.

The Hubble portrait also shows brilliantly shining spiral galaxies and older red fuzzy galaxies whose star-formation days are over.

More than 2,000 images of the same field, taken by Hubble's Advanced Camera for Surveys and its near-infrared Wide Field Camera 3, were combined to form the XDF.

"XDF is the deepest image of the sky ever obtained," astronomer Garth Illingworth, with the University of California at Santa Cruz, said in a statement. "It allows us to explore further back in time than ever before.

(Editing by David Adams and Claudia Parsons)

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Sunday, September 23, 2012

Reuters: Science News: Florida wants NASA land to develop commercial spaceport

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Florida wants NASA land to develop commercial spaceport
Sep 23rd 2012, 20:29

By Irene Klotz

CAPE CANAVERAL, Florida | Sun Sep 23, 2012 4:29pm EDT

CAPE CANAVERAL, Florida (Reuters) - With an eye toward developing a commercial spaceport, Florida has asked NASA to transfer 150 acres of land north of the shuttle launch pads and the shuttle runway to Space Florida, the state's aerospace development agency.

"Florida believes that the properties identified in this request are excess to the needs of the U.S. government," Lieutenant Governor Jennifer Carroll, who is also chairwoman of Space Florida, wrote in letter to NASA chief Charles Bolden and Ray LaHood, secretary of Department of Transportation, which oversees commercial space transportation in the United States.

The letter, dated September 20, was posted on the state's Sunburst public records website.

A week earlier, Space Florida agreed to spend $2.3 million for environmental studies, land surveys, title searches, appraisals and other activities to lay the groundwork for Cape Canaveral Spaceport, a proposed state-owned commercial complex that would be licensed by the Federal Aviation Administration and operated like an airport.

"If we want to be satisfied with 10 to 12 government launches a year, I don't have to do anything," Space Florida president and chief executive Frank DiBello told Reuters.

But he said those launches would likely end when commercial sites elsewhere are able to offer affordable rates.

"What has existed for decades has been good, but the marketplace has been largely governmental. What commercial market there was, we have essentially lost overseas. I'm not only anxious to bring some of that back, but I'm anxious for the next-generation of providers, both the launch companies and the satellite owner-operators, to have Florida be the place where they seek to do business," DiBello said.

Similar commercial spaceports have been set up in New Mexico, where Virgin Galactic, an offshoot of Richard Branson's Virgin Group, plans to fly a fleet of suborbital passenger spaceships, as well as Alaska, Virginia and California.

Commercial space launches from Cape Canaveral Air Force Base in Florida and from Vandenberg Air Force Base in California, both of which can accommodate bigger rockets and more diverse payloads than the other sites, are subject to military oversight.

Florida's request comes as NASA is working to revamp the Kennedy Space Center following the end of the shuttle program last year. It also is timed to woo privately owned Space Exploration Technologies, or SpaceX, to build its third launch site in Florida.

The company, founded and run by Internet entrepreneur Elon Musk, currently flies its Falcon rockets from a refurbished and leased pad at Cape Canaveral Air Force Station. It is preparing to activate a second launch site at Vandenberg before the end of the year and is looking to build a third launch pad in a commercial zone.

Out of a backlog of 42 Falcon 9 flights, worth about $4 billion, 65 percent are for commercial and non-U.S. government customers, Brian Bjelde, SpaceX director of product and mission management, said at the American Institute of Aeronautics and Astronautics conference in Pasadena, California, earlier this month.

An environmental study of a site in Brownsville, Texas, near the Mexican border, is under way. SpaceX also is looking at sites in Puerto Rico, Hawaii and other states, Bjelde said.

SHILOH REVISITED

In 1989, Florida proposed building a commercial launch pad north of the space shuttle complex in an area known as Shiloh, an old citrus-growing community that straddles Brevard County to the south and Volusia County to the north.

That initiative was hastily shut down by environmentalists' concerns over scrub jay habitats and other issues.

"This site is not exactly the same. We were going after a lot more land then," DiBello said.

"What we are seeking is a collaborative effort and we want to do that early on so they're all involved and all part of the dialog. This includes the Department of Interior and wildlife and refuge community," DiBello said.

Some of the requested land is believed to be owned by Florida, which lays claim to about 56,000 acres of the 140,000 acres that comprise the Kennedy Space Center and the surrounding Merritt Island National Wildlife Refuge.

The federal government was allowed use of the land for the national space program, with the caveat that it would revert back to the state if it was no longer needed for NASA's purposes.

NASA never developed the Shiloh site.

Space Florida already has an agreement with NASA to operate one of the three space shuttle processing hangars.

DiBello said cost estimates to develop a new launch site at Shiloh were not yet available. Though Space Florida is, in part, a special municipal district, with powers to tax and sell bonds, the agency is not looking at levying taxes for spaceport development, DiBello said.

"Right now we hope that we could keep SpaceX here, but there are others that will be coming into the marketplace, I'm convinced," he said.

(Editing by Jane Sutton)

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Reuters: Science News: Boost for carbon capture from new non-toxic absorber

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Boost for carbon capture from new non-toxic absorber
Sep 23rd 2012, 17:07

By Chris Wickham

LONDON | Sun Sep 23, 2012 1:07pm EDT

LONDON (Reuters) - Researchers have created a new material that could solve some of the problems holding back projects to combat global warming by capturing and burying carbon emitted from power stations.

The material, made from aluminum nitrate salt, cheap organic materials and water, is non-toxic and requires less energy to strip out the carbon when it becomes saturated, the scientists said.

Carbon capture has not yet been proven on a commercial scale and pilot projects have been hindered by concerns that the ammonia-based materials, or amines, used to absorb carbon can themselves produce toxic emissions.

They are also expensive and need large amounts of heat to boil out the carbon so it can be taken away and stored.

The researchers say their new absorber, dubbed NOTT-300, could overcome all these problems.

"I feel this can been viewed as a revolution to a certain degree," Sihai Yang from Nottingham University, who worked on the project, told Reuters.

"It is non-toxic, and zero heating input is required for the regeneration. There is promising potential to overcome the traditional amine material on both environmental and economic grounds."

Timmy Ramirez-Cuesta, who worked on the project at the ISIS research center at the Rutherford Appleton Laboratory in Oxfordshire, said the new material could simplify carbon capture by using interchangeable filters.

"When the material is saturated, the exhaust gases are diverted to the second container where the process continues," he said."The full container is disconnected from the system and the CO2 is removed using a vacuum and collected. The regenerated container can then be reconnected and used repeatedly."

The team, which also included scientists from the University of Oxford and Peking University in China, say the new material captured close to 100 percent of the carbon dioxide in experiments using a cocktail of gases.

Although the rate could be lower in the "dynamic conditions" of a real power station, it should still be over 90 percent, which is a key test for the viability of an absorber.

The material can pick up harmful gases, including sulphur dioxide, in a mixture, allowing others like hydrogen, methane, nitrogen and oxygen to pass through.

It does, however, absorb water vapor and the researchers are doing further work to overcome the problem, which could reduce its performance with CO2.

Martin Schroeder at Nottingham, who led the research, said NOTT-300 could also be put to use in gas purification. Natural gas often contains 10 percent of carbon dioxide impurity which needs to be removed before it can be used.

The scientists said they are working with companies in the carbon capture business on commercializing the new material.

The research was published in the journal Nature Chemistry.

(Editing by David Cowell)

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Saturday, September 22, 2012

Reuters: Science News: GE plans medical technology acquisitions in Germany

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GE plans medical technology acquisitions in Germany
Sep 22nd 2012, 10:55

FRANKFURT | Sat Sep 22, 2012 6:55am EDT

FRANKFURT (Reuters) - General Electric plans to make acquisitions in Germany to raise its market share in CAT scan and MRI technology, the company's new Germany chief told a magazine.

"Especially in the high-end segment we want to double, in some areas even triple, our market share," Volker Wetekam told Wirtschafts Woche weekly, according to an excerpt of an article to be published on Monday.

He said the company plans to spend a "considerable" sum on acquisitions, without elaborating.

"We are looking for companies that move us forward in terms of technology, not just in Germany but globally. We are currently holding talks," he said.

General Electric employs about 1,800 people at its medical technology business in Germany. It plans to hire about 100 more staff to expand its research department in the country and form new partnerships with university clinics, the article said.

(Reporting by Maria Sheahan; Editing by Hugh Lawson)

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Friday, September 21, 2012

Reuters: Science News: Honeybee homicide case against Syngenta pesticide unproven

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Honeybee homicide case against Syngenta pesticide unproven
Sep 21st 2012, 08:53

By Chris Wickham

LONDON | Fri Sep 21, 2012 4:53am EDT

LONDON (Reuters) - British scientists have shot down a study on declining honeybee populations that triggered a French ban on a pesticide made by Swiss agrochemicals group Syngenta.

France's farm minister Stephane Le Foll withdrew Syngenta's marketing permit for the pesticide Cruiser OSR in June, citing evidence of a threat to the country's bees.

But a study by Britain's Food and Environment Research Agency with the University of Exeter says the results of the original research were flawed.

The study, published in the journal Science, does not deny that pesticides could be harmful to individual bees but argues there is no evidence they cause the collapse of whole colonies.

"We do not yet have definitive evidence of the impact of these insecticides on honeybees and we should not be making any decisions on changes to policy on their use," said James Cresswell, the ecotoxicologist who led the latest study.

The previous research, led by French scientist Mikaël Henry and published in Science in April, showed the death rate of bees increased when they drank nectar laced with the neonicotinoid pesticide, thiamethoxam, the active ingredient in Cruiser OSR.

Neonicotinoids are among the most widely-used agricultural insecticides.

Henry's work calculated this would cause a bee colony to collapse completely but Cresswell said the French study seemed to have used an inappropriately low birth rate, underestimating the rate at which colonies can recover from the loss of bees.

"They modeled a colony that isn't increasing in size and what we know is that in springtime when oilseed rape is blossoming they increase rapidly," Cresswell told Reuters.

The French study has been cited by scientists, environmentalists and policy-makers as evidence of the impact of these pesticides on bees, which are declining around the world.

"We know that neonicotinoids affect honeybees, but there is no evidence that they could cause colony collapse," said Cresswell. "When we repeated the previous calculation with a realistic birth rate, the risk of colony collapse under pesticide exposure disappeared."

Cresswell said Henry's research also used a dosage of pesticide equivalent to a whole day's intake by the bees, akin to testing the effect of coffee on people by making them drink eight cups in one go, rather than spread out over the day.

Henry said he was "perfectly comfortable" with the new findings, adding in an emailed response to Reuters: "The model we used predicts a major deviation from the expected colony dynamics, rather than a collapse per se."

The April paper in Science said exposure to thiamethoxam "causes high mortality due to homing failure at levels that could put a colony at risk of collapse".

Cresswell said: "I am definitely not saying that pesticides are harmless to honeybees, but I think everyone wants to make decisions based on sound evidence, and our research shows that the effects of thiamethoxam are not as severe as first thought."

(Editing by Belinda Goldsmith and Pravin Char)

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Thursday, September 20, 2012

Reuters: Science News: Space shuttle Endeavour lands piggyback in California

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Space shuttle Endeavour lands piggyback in California
Sep 21st 2012, 00:06

The space shuttle Endeavour, atop NASA's Shuttle Carrier Aircraft, flies over Houston, Texas in this September 19, 2012 NASA handout photo. REUTERS/Sheir Locke/NASA/Handout

1 of 6. The space shuttle Endeavour, atop NASA's Shuttle Carrier Aircraft, flies over Houston, Texas in this September 19, 2012 NASA handout photo.

Credit: Reuters/Sheir Locke/NASA/Handout

By Gene Blevins

EDWARDS AIR FORCE BASE, California | Thu Sep 20, 2012 8:06pm EDT

EDWARDS AIR FORCE BASE, California (Reuters) - The space shuttle Endeavour, carried piggyback atop a jumbo jet, landed at Edwards Air Force Base in California on Thursday at the tail end of a cross-country trip to Los Angeles to begin its final mission as a museum exhibit.

The specially modified Boeing 747 with the newly retired spaceship perched on its back touched down safely at 12:50 p.m. local time (3:50 p.m. EDT) at Edwards, about 100 miles north of Los Angeles in the Mojave Desert.

NASA retired its shuttle fleet last year after completing the U.S. portion of the $100 billion International Space Station, a permanently staffed research complex that is owned by 15 nations and orbits about 250 miles above Earth.

Endeavour embarked on its last cross-county "ferry" journey on Wednesday from Cape Canaveral, Florida, and made several low-altitude passes over NASA centers in Mississippi, Louisiana and Texas before stopping for the night at Ellington Field near the Johnson Space Center in Houston.

The trip resumed early on Thursday, with Endeavour and its carrier jet making additional flyovers - one over Tucson, Arizona, in a salute to former Congresswoman Gabrielle Giffords and her husband, Mark Kelly, the retired astronaut who commanded Endeavour's final flight on his last mission in late May 2011.

Giffords, still recuperating from a gunshot wound to the head suffered in an attempt on her life last year, watched the flyover from the roof of a Tucson parking garage with her husband and mother, according to former aide C.J. Karamargin, who joined them.

"When it came into view, Mark said, 'There's my plane!'" Karamargin recounted. "Gabby was just elated, hooting and hollering like the rest of us were."

From Arizona, Endeavour and its carrier jet flew on to California, where the spacecraft was built two decades ago, for the landing at Edwards Air Force Base.

The sprawling installation used to serve as the primary landing site for NASA's shuttle program before the space agency built a landing facility for the orbiters at the Kennedy Space Center in Florida. Edwards then became the principal backup landing spot for shuttles in case of bad weather at Cape Canaveral.

Endeavour made seven landings at Edwards during its active tenure at NASA, most recently in November 2008.

FINAL FLIGHT

The shuttle was scheduled to depart Edwards on Friday for its very last ferry flight, and the final airborne journey of the entire space shuttle fleet, headed for Los Angeles International Airport.

The 75-ton (68-tonne) winged spacecraft will then undergo preparations to be moved next month through city streets from the airport to its permanent home at the California Science Center in downtown Los Angeles, where the shuttle will be put on public display starting October 30.

To make way for the mammoth orbiter along its 12-mile route to the museum, crews are cutting down nearly 400 trees, raising overhead utility wires and temporarily removing hundreds of utility poles, street lights and traffic signals. The science center has agreed to plant 1,000 new trees to replace those slated for removal.

Endeavour was built as a replacement for Challenger, the shuttle lost in a 1986 launch accident that killed seven astronauts. It went on to fly 25 missions, including 12 to build and outfit the space station, and logged nearly 123 million miles (198 million km) in flight during 4,671 orbits.

Endeavour is the second of NASA's three surviving shuttles to be sent to a museum. Discovery, NASA's oldest surviving shuttle, is on display at the Smithsonian Institution's Steven F. Udvar-Hazy Center outside Washington.

Atlantis, which flew NASA's 135th and final shuttle mission in July 2011, will be towed down the road to the Kennedy Space Center Visitor Complex in November.

NASA lost a fourth shuttle, Columbia, in another fatal accident in 2003. That shuttle was not replaced. A shuttle test vehicle, Enterprise, which has never flown in space, was delivered to a New York City museum.

On its way from Edwards to the Los Angeles airport, Endeavour will soar atop its carrier jet on several last victory laps over California, including flyovers above San Francisco, Sacramento, Hollywood and even Disneyland at Anaheim. The spaceship is expected to arrive at LAX sometime before noon local time.

(Reporting by Steve Gorman and Tim Gaynor; Writing by Steve Gorman; Editing by Cynthia Johnston and Sandra Maler)

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Reuters: Science News: Author defends Monsanto GM study as EU orders review

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Author defends Monsanto GM study as EU orders review
Sep 20th 2012, 15:56

BRUSSELS | Thu Sep 20, 2012 11:56am EDT

BRUSSELS (Reuters) - The French author of a study linking a type of genetically modified corn to higher health risks in rats dismissed criticism of his research methods on Thursday, describing the work as the most detailed study to date on the subject.

Gilles-Eric Seralini of the University of Caen and colleagues said on Wednesday that rats fed on Monsanto's genetically modified corn or exposed to its top-selling weed killer suffered tumors and multiple organ damage and premature death.

But experts not involved with the study were skeptical, describing the French team's statistical methods as unconventional and accusing them of going "on a statistical fishing trip".

Speaking at a news conference in Brussels on Thursday, Seralini defended the peer-reviewed study, which was published in the journal Food and Chemical Toxicology.

"This study has been evaluated by the world's best food toxicology magazine, which took much more time than people who reacted within 24 hours without reading the study," he told Reuters Television.

"I'm waiting for criticism from scientists who have already published material in journals... on the effects of GMOs and pesticides on health, in order to debate fairly with peers who are real scientists, and not lobbyists."

Earlier, the European Commission said it had asked the EU's food safety authority, EFSA, to verify the results of the French study and report their findings.

"EFSA's mandate is to verify what this group of scientists has presented, to look at their research conditions, look at how the animals were treated," Commission health spokesman Frederic Vincent told a regular news briefing.

"We hope that by the end of the year we will have an EFSA opinion on this piece of scientific research."

In 2003, EFSA published a safety assessment of the GM corn variety known as NK603, which is tolerant to Monsanto's Roundup weed killer. The assessment concluded that NK603 was as safe as non-GM corn, after which the European Union granted approval for its use in food and feed.

Seralini said EFSA's assessments were less rigorous than his team's study.

"GMOs have been evaluated in a extremely poor and lax way with much less analysis than we have done. It's the world's most detailed and longest study. Therefore, some people are responsible and guilty of authorizing this GMO after only three months," he said.

(Reporting by Clement Rossignol; Writing by Charlie Dunmore; Editing by Hugh Lawson)

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Reuters: Science News: Honeybee homicide case against Syngenta pesticide unproven

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Honeybee homicide case against Syngenta pesticide unproven
Sep 20th 2012, 18:01

By Chris Wickham

LONDON | Thu Sep 20, 2012 2:01pm EDT

LONDON (Reuters) - British scientists have shot down a study on declining honeybee populations that triggered a French ban on a pesticide made by Swiss agrochemicals group Syngenta.

France's farm minister Stephane Le Foll withdrew Syngenta's marketing permit for the pesticide Cruiser OSR in June, citing evidence of a threat to the country's bees.

But a study by Britain's Food and Environment Agency with the University of Exeter says the results of the original research were flawed.

The study, published in the journal Science, does not deny that pesticides could be harmful to individual bees but argues there is no evidence they cause the collapse of whole colonies.

"We do not yet have definitive evidence of the impact of these insecticides on honeybees and we should not be making any decisions on changes to policy on their use," said James Cresswell, the ecotoxicologist who led the latest study.

The previous research, led by French scientist Mikaël Henry and published in Science in April, showed the death rate of bees increased when they drank nectar laced with the neonicotinoid pesticide, thiamethoxam, the active ingredient in Cruiser OSR.

Henry's work calculated this would cause a bee colony to collapse completely but Cresswell said the French study seems to have used an inappropriately low birth rate, underestimating the rate at which colonies can recover from the loss of bees.

"They modelled a colony that isn't increasing in size and what we know is that in springtime when oilseed rape is blossoming they increase rapidly," Cresswell told Reuters.

The French study has been cited by scientists, environmentalists and policy-makers as evidence of the impact of these pesticides on bees, which are declining around the world.

"We know that neonicotinoids affect honeybees, but there is no evidence that they could cause colony collapse," said Cresswell. "When we repeated the previous calculation with a realistic birth rate, the risk of colony collapse under pesticide exposure disappeared."

Cresswell said Henry's research also used a dosage of pesticide equivalent to a whole day's intake by the bees, akin to testing the effect of coffee on people by making them drink eight cups in one go, rather than spread out over the day.

Henry was not immediately available for comment.

Neonicotinoids are among the most widely-used agricultural insecticides.

"I am definitely not saying that pesticides are harmless to honeybees, but I think everyone wants to make decisions based on sound evidence, and our research shows that the effects of thiamethoxam are not as severe as first thought," the British scientist said.

(Editing by Belinda Goldsmith)

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Reuters: Science News: Study on Monsanto GM corn concerns draws skepticism

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Study on Monsanto GM corn concerns draws skepticism
Sep 20th 2012, 12:57

Researcher Gilles-Eric Seralini of the University of Caen speaks at a news conference at the European Parliament in Brussels September 20, 2012. Seralini said that rats fed a lifetime diet of Monsanto's genetically modified corn or exposed to its top-selling weedkiller Roundup suffered tumours and multiple organ damage, according to a French study published on Wednesday. REUTERS/Yves Herman

1 of 2. Researcher Gilles-Eric Seralini of the University of Caen speaks at a news conference at the European Parliament in Brussels September 20, 2012. Seralini said that rats fed a lifetime diet of Monsanto's genetically modified corn or exposed to its top-selling weedkiller Roundup suffered tumours and multiple organ damage, according to a French study published on Wednesday.

Credit: Reuters/Yves Herman

By Ben Hirschler and Kate Kelland

LONDON | Thu Sep 20, 2012 8:57am EDT

LONDON (Reuters) - In a study that prompted sharp criticism from other experts, French scientists said on Wednesday that rats fed on Monsanto's genetically modified corn or exposed to its top-selling weedkiller suffered tumors and multiple organ damage.

The French government asked the country's health watchdog to investigate the findings further, although a number of scientists questioned the study's basic methods and Monsanto said it felt confident its products had been proven safe.

Gilles-Eric Seralini of the University of Caen and colleagues said rats fed on a diet containing NK603 - a seed variety made tolerant to dousings of Monsanto's Roundup weedkiller - or given water with Roundup at levels permitted in the United States, died earlier than those on a standard diet.

Experts not involved in the study were skeptical, with one accusing the French scientists of going on a "statistical fishing trip" and others describing its methods as well below standard.

The animals on the genetically modified (GM) diet suffered mammary tumors, as well as severe liver and kidney damage, according to the peer-reviewed study which was published in the journal Food and Chemical Toxicology and presented at a news conference in London.

The researchers said 50 percent of male and 70 percent of female rats died prematurely, compared with only 30 percent and 20 percent in the control group.

Monsanto spokesman Thomas Helscher said the company would review the study thoroughly. However, he added: "Numerous peer-reviewed scientific studies performed on biotech crops to date, including more than a hundred feeding studies, have continuously confirmed their safety, as reflected in the respective safety assessments by regulatory authorities around the world."

EXPERTS SCEPTICAL

Genetically modified organisms (GMOs) are deeply unpopular in Europe but dominate major crops in the United States after Monsanto introduced a soybean genetically altered to tolerate Roundup in 1996.

Experts asked by reporters to review the scientific paper advised caution in drawing conclusions from it.

Tom Sanders, head of the nutritional sciences research division at King's College London, noted that Seralini's team had not provided any data on how much the rats were given to eat, or what their growth rates were.

"This strain of rat is very prone to mammary tumors particularly when food intake is not restricted," he said. "The statistical methods are unconventional ... and it would appear the authors have gone on a statistical fishing trip."

Mark Tester, a research professor at the Australian Centre for Plant Functional Genomics at the University of Adelaide, said the study's findings raised the question of why no previous studies have flagged up similar concerns.

"If the effects are as big as purported, and if the work really is relevant to humans, why aren't the North Americans dropping like flies? GM has been in the food chain for over a decade over there - and longevity continues to increase inexorably," he said in an emailed comment.

David Spiegelhalter of the University of Cambridge said the methods, statistics and reporting of results were all below standard. He added that the study's untreated control arm comprised only 10 rats of each sex, most of which also got tumors.

LONG-TERM EFFECTS?

While supporters of GM crops say previous studies have overwhelmingly pointed to their safety, critics argue there is still limited information about the long-term effects since the crops have only been around for just over 15 years.

In France, where opposition to GMOs has led to a ban on growing such crops, the government said it had asked its health and safety agency to assess the study and had also sent it to the European Union's food safety agency (EFSA).

"Based on the conclusion ..., the government will ask the European authorities to take all necessary measures to protect human and animal health, measures that could go as far as an emergency suspension of imports of NK603 maize in the European Union," the French health, environment and farm ministries said in a joint statement.

Seralini, the scientist at the centre of the latest research, previously raised safety concerns based on a shorter rat study in 2009. His new study takes things a step further by tracking the animals throughout their two-year lifespan.

Michael Antoniou, a molecular biologist at King's College London, who helped draft the paper, told reporters at a London briefing that its findings highlighted the "need to test all GM crops in two-year lifelong studies".

"I feel this data is strong enough to withdraw the marketing approval for this variety of GM maize temporarily, until this study is followed up and repeated with larger number of animals to get the full statistical power that we want," he said.

Seralini believes his latest lifetime rat tests give a more realistic and authoritative view of risks than the 90-day feeding trials that form the basis of GM crop approvals, since three months is only the equivalent of early adulthood in rats.

France's Jose Bove, vice-chairman of the European Parliament's commission for agriculture and known as an opponent of GM, called for an immediate suspension of all EU cultivation and import authorizations of GM crops. "This study finally shows we are right and that it is urgent to quickly review all GMO evaluation processes," he said in a statement.

The study is also likely to create friction in the United States, where opponents of genetically engineered foods in California are fighting to have all GMOs removed from the food supply.

(Adiitional reporting by Sybille de La Hamaide in Paris and Carey Gillam in Kansas City, editing by Anna Willard and Janet McBride)

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Wednesday, September 19, 2012

Reuters: Science News: NASA rover snaps pictures of an eclipse from Mars

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 rover snaps pictures of an eclipse from Mars
Sep 20th 2012, 00:48

The Curiosity rover observes the moon Phobos grazing the sun's disk on Martian day, or sol, 37 (September 13, 2012) in this NASA handout image. REUTERS/NASA/JPL-Caltech/MSSS/Handout

1 of 3. The Curiosity rover observes the moon Phobos grazing the sun's disk on Martian day, or sol, 37 (September 13, 2012) in this NASA handout image.

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

By Irene Klotz

CAPE CANAVERAL, Florida | Wed Sep 19, 2012 8:48pm EDT

CAPE CANAVERAL, Florida (Reuters) - NASA's Mars rover Curiosity, dispatched to determine if the planet most like Earth in the solar system could have supported microbial life, has taken on a second job - moonlighting as an astronomer.

Last week, Curiosity outfitted its high-resolution camera with protective filters and took pictures of the sun as Phobos, one of Mars' two small moons, sailed by.

It was a tricky shoot. Phobos and its sister moon Deimos are closer to Mars than our moon is to Earth, so they shoot across the sky relatively quickly. Phobos takes less than eight hours to circle Mars. Deimos takes about 30 hours to make the trip.

Last Thursday, the moons started to cross paths.

"Phobos grazed the edge of the sun, as seen from Curiosity. We had basically a partial eclipse," astronomer Mark Lemmon, with Texas A&M University, told reporters during a conference call on Wednesday.

The rover took more than 600 images with its left and right cameras, about 100 of which captured some part of the eclipse. Not all the pictures have been radioed back to Earth.

Curiosity has a partner in the project. From the other side of the planet, the rover Opportunity was expected to try to shoot the eclipse on Wednesday.

Aside from pretty pictures, the images should help scientists learn more about Mars' internal structure. Like Earth's moon, Mars' moons have some gravitational pull that slightly change the planet's shape.

"That in turn changes the moons' orbits -- Phobos is slowing down, Deimos is speeding up, like our moon," Lemmon said. "This is something that happens very slowly over time."

In 10 million to 15 million years, Phobos is expected to be so close to Mars that it will be torn apart by the planet's gravity.

The moons' passages by the sun, captured by NASA's rovers, help scientists nail down their orbits and determine how fast they are changing. That information in turn is used to assess how much Mars is deformed as the moons go by.

Curiosity resumed skywatching on Tuesday, when both moons passed overhead.

"This was a really hard thing to do. The timing was very precise," Lemmon said.

The next Martian eclipses will take place in about 11 months. By then, Curiosity should be in a better vantage point.

The rover's eventual science target is a three-mile- high mound of sediment rising from the floor of the Gale Crater impact basin where Curiosity landed six weeks ago.

(Editing by Kevin Gray; Editing by David Brunnstrom)

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Reuters: Science News: Shuttle Endeavour sets off for California museum

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
Shuttle Endeavour sets off for California museum
Sep 20th 2012, 00:14

The space shuttle Endeavour leaves Kennedy Space Center for the last time in Florida, morning of September 19, 2012. Endeavour, attached to a NASA modified 747 aircraft, lifts off and will end up at the California Science Center museum where it will be put on display. Endeavour was to leave the space center on September 17 but was delayed because of bad weather between Florida and Texas, where it will make its first stop before heading to California. REUTERS /Michael Brown

1 of 3. The space shuttle Endeavour leaves Kennedy Space Center for the last time in Florida, morning of September 19, 2012. Endeavour, attached to a NASA modified 747 aircraft, lifts off and will end up at the California Science Center museum where it will be put on display. Endeavour was to leave the space center on September 17 but was delayed because of bad weather between Florida and Texas, where it will make its first stop before heading to California.

Credit: Reuters /Michael Brown

By Irene Klotz

CAPE CANAVERAL, Florida | Wed Sep 19, 2012 8:14pm EDT

CAPE CANAVERAL, Florida (Reuters) - Riding piggyback atop a Boeing 747 jumbo jet, the space shuttle Endeavour left its Florida home port for the last time on Wednesday and headed to California to begin a new mission as a museum exhibit.

After waiting two days for weather to clear, the specially modified carrier jet sped down the Kennedy Space Center runway shortly after dawn on Wednesday, the first leg of a planned three-day trek to the West Coast.

"There's sadness to see it go, but the space shuttle program had to end for us to move on to the next thing," said astronaut Greg Chamitoff.

NASA retired its three-ship fleet last year after completing the U.S. portion of the $100 billion International Space Station, a permanently staffed research complex that is owned by 15 nations and flies about 250 miles above Earth.

The agency is developing a spaceship and rocket that can fly astronauts to the moon, asteroids and eventually Mars. The first flight with a crew, however, is not expected until 2021.

Russia now flies NASA astronauts to the space station, at a cost of more than $65 million a seat. NASA hopes to buy rides from commercial companies beginning in 2017.

Endeavour was built as a replacement for Challenger, the shuttle lost in a 1986 launch accident that killed seven astronauts. It went on to fly 25 missions, including 12 to build and outfit the space station.

It flew the first assembly mission, carrying up the Unity connecting node, which was attached to the Russian Zarya base module.

"It's hard to believe it was 14 years ago," said Kennedy Space Center director Bob Cabana, a former astronaut who commanded NASA's first station assembly flight in 1998.

Endeavour is the second of NASA's three surviving shuttles to be sent to a museum. Discovery, NASA's oldest surviving shuttle, is on display at the Smithsonian Institution's Steven F. Udvar-Hazy Center outside Washington.

Atlantis, which flew NASA's 135th and final shuttle mission in July 2011, will be towed down the road to the Kennedy Space Center Visitor Complex in November.

NASA lost a fourth shuttle, Columbia, in another fatal accident in 2003. That shuttle was not replaced.

HEADING WEST

Endeavour's cross-country piggyback flight had been due to begin on Monday, but a cold front moving over Texas and into the Gulf of Mexico delayed its departure for two days.

As the sun rose over the oceanside spaceport in Florida, the shuttle carrier jet took off through partly cloudy, pink-tinged skies and headed south for a farewell pass over the neighboring beachside communities.

The duo circled back around to the Kennedy Space Center to give workers and guests gathered at the runway a final glimpse of a shuttle in the sky.

Additional low flyovers past NASA centers in Mississippi, Louisiana and Texas are planned, weather permitting, before the 747 lands at Ellington Field near the Johnson Space Center in Houston for the night.

Endeavour is due to depart Houston at dawn on Thursday, refuel at Biggs Army Airfield in El Paso, Texas, and head to NASA's Dryden Flight Research Center at Edwards Air Force Base in California, where it will land for the night.

On Friday Endeavour will be flown to northern California to pass by NASA's Ames Research Center at Moffett Field and landmarks in and around San Francisco, Sacramento and other cities.

The final leg of the journey will take Endeavour on a tour over Los Angeles before the 747 jet touches down at Los Angeles International Airport around 11 a.m. PDT (2 p.m. EDT/1800 GMT).

The shuttle will be taken off the carrier jet and moved to a United Airlines hangar to be prepared for transport next month to the California Science Center, about 12 miles from the airport.

The trip to the museum, which will take place along Los Angeles neighborhood roads, requires some 400 trees to be cut down and the temporary removal of hundreds of utility poles, street lights and traffic signals to accommodate the 175,000-pound (79,379-kg) winged spaceship.

The California Science Center plans to plant 1,000 new trees to replace those taken down for Endeavour's road trip. The shuttle is due to go on display on October 30.

(Editing by Jane Sutton and Xavier Briand)

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