sábado 3 de marzo de 2007

Atomic clock signals may be best shared by fiber-optics

   Time and frequency information can be transferred between laboratories or to other users in several ways, often using the Global Positioning System (GPS), but today's best atomic clocks are so accurate that more stable methods are needed. The best solution may be to use lasers to transfer data over fiber-optic cables, according to scientists at JILA.
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Computer-designed molecule to clean up fluorocarbons?

   The chemical bond between carbon and fluorine is one of the strongest in nature, but researchers at NIST and Philip Morris's Interdisciplinary Network of Emerging Science and Technology group have used "computational chemistry" to design a molecule to pull the fluorine out of fluorocarbons.
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Genome sequencing reveals key to viable ethanol production

   As the national push for alternative energy sources heats up, researchers at the University of Rochester have for the first time identified how genes responsible for biomass breakdown are turned on in a microorganism that produces valuable ethanol from materials like grass and cornstalks.Waste products such as grass clippings and wood chips -- once thought too difficult to turn into ethanol -- may soon be fodder for hungry, gene-tweaked bacteria.
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Bush offers comfort to devastated towns (AP)

   

President Bush greets residents as he tours tornado damage in Americus, Ga., Saturday, March 3, 2007. (AP Photo/Charles Dharapak)AP - President Bush handed out hugs to residents who survived killer tornadoes that ripped through Alabama and Georgia and offered encouraging words Saturday at Enterprise High School where students grieved the loss of eight classmates.



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Stargazers watch total lunar eclipse (AP)

   

Projection of the lunar eclipse on a radome covers a observatory in Bochum Sundern, western Germany, Saturday, March 3, 2007. Despite bad weather conditions sometimes visitors are able to observe the entire shading of the moon at midnight for approximately 70 minutes. The next lunar eclipse will be seen in Central Europe in February 2008. (AP Photo/Volker Wiciok)AP - The moon darkened, reddened, and turned shades of gray and orange Saturday night during the first total lunar eclipse in nearly three years, thrilling stargazers and astronomers around the world.



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Museum IDs new species of dinosaur (AP)

   AP - A new dinosaur species was a plant-eater with yard-long horns over its eyebrows, suggesting an evolutionary middle step between older dinosaurs with even larger horns and the small-horned creatures that followed, experts said.
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Lunar eclipse wows sky watchers

   People across the world watch the moon turn red as the first lunar eclipse in more than three years takes place.
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Natural antibiotics yield secrets to atom-level imaging technique

   Frog skin and human lungs hold secrets to developing new antibiotics, and a technique called solid-state NMR spectroscopy is a key to unlocking those secrets.
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Bio-artists bridge art-science divide (AP)

   

Part of the exhibit 'It's Alive' is seen at the Montserrat College of Art, Wednesday, Feb. 14, 2007, in Beverly, Mass. The exhibit mixes science with art to explore and comment on the power that biotechnology and other sciences are exerting over fundamental questions of life. (AP Photo/Adam Hunger)AP - Adam Zaretsky once spent 48 hours playing Engelbert Humperdincks's "Greatest Hits" to a dish of E.coli bacteria to determine whether vibrations or sounds influenced bacterial growth. Watching the bacteria's antibiotic production increase, Zaretsky decided that perhaps even cells were annoyed by constant subjection to "loud, really awful lounge music."



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Cameras key to saving endangered tigers (AP)

   

In this undated photo released by the Wildlife Conservation Society, a tiger roams the jungle forest in southern Mondulkiri province of Cambodia.  Once a hotspot on the Ho Chi Minh Trail during the Vietnam War, the area and its wildlife are now protected against hunters.  (AP Photo/Wildlife Conservation Society)AP - Capturing a tiger on camera has always been Ed Pollard's goal, but now it's a necessity. His Wildlife Conservation Society has staked its prestige on a pledge to boost tiger numbers by half across six Asian sites over the next 10 years.



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U.S. projects 19 percent emissions rise (AP)

   

The town of Iqaluit, Nunavut Territory, Canada, about 200 miles (321 kms) south of the Arctic Circle is seen on Monday, Feb. 26, 2007. Iqaluit is the capital of Canada's newest provinces, Nunavut Territory, which was carved out of the Northwest Territories to become a semi-autonomous region in 1999. There are some 7,000 people in Iqaluit, most of whom are Inuit, nomadic hunters who have lived in the frozen climes of Canada, Alaska, Russia and Greenland for thousands of years. The Inuit are the first on earth to experience the impact of global warming and claim the United States is violating their human rights by being the world's largest emitter of greenhouse gases. (AP Photo/Beth Duff-Brown)AP - That projection comes from an internal draft report from the Bush administration that is more than a year overdue at the United Nations. The Associated Press obtained a copy Saturday.



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Lingering winds (weather.com)

   weather.com -
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Total lunar eclipse to be 1st in 3 years (AP)

   AP - The first total lunar eclipse in three years will give nearly every continent at least a partial view when the moon turns a shade of crimson as light reaching it from the sun is blotted out by the Earth.
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Ho Chi Minh Trail area safe for wildlife (AP)

   

In this undated photo released by the Wildlife Conservation Society, a wild elephant roams the jungle forest in southern Mondulkiri province of Cambodia.  Once a hotspot on the Ho Chi Minh Trail during the Vietnam War, the area and its wildlife are now protected against hunters.  (AP Photo/Wildlife Conservation Society)AP - Four decades after U.S. warplanes plastered it with bombs, a remote corner of the old Ho Chi Minh Trail in Cambodia is making a comeback as a treasure trove of endangered wildlife.



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Bush visits school devastated by twister (AP)

   

President Bush, center, comforts students Megan Parks, 17, left, and Sarah Carroll, 17, right, as Bush tours tornado damage at Enterprise High School in Enterprise, Ala., Saturday, March 3, 2007. (AP Photo/Charles Dharapak)AP - On a mournful mission, President Bush climbed over piles of concrete, roofing, insulation, broken glass and textbooks Saturday that littered Enterprise High School, battered by a tornado that killed eight students.



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Calif. agency pulls whale attack report (AP)

   

In this file photo made from video, killer whale Kasatka holds the foot of trainer Ken Peters in her mouth as she drags him through the water during a show at SeaWorld Adventure Park in San Diego in November 2006. Peters survived the whale attack because he stayed calm, but it is only a matter of time before someone is killed, state investigators found. (AP Photo/Stephanie Emory)AP - California's workplace safety office rescinded a report issued earlier this week on a whale attack at SeaWorld Adventure Park, agreeing with SeaWorld officials' claims that the office was unsuited to recommend changes in how to deal with whales.



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U.S., Brazil launch biofuels forum (AP)

   AP - UNITED NATIONS — The world's two top ethanol producers — the U.S. and Brazil — announced the creation of an international forum to help expand the global market for biofuels, just days before the two countries are expected to sign a separate agreement promoting ethanol across the Western Hemisphere.
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Settling down across the nation (weather.com)

   weather.com -
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Physicists reveal water's secrets in journal 'Science'

   Equipped with high-speed computers and the laws of physics, scientists from the University of Delaware and Radboud University in the Netherlands have developed a new method to "flush out" the hidden properties of water. The research is reported in Science. Their first-principle simulation of water molecules -- based exclusively on quantum physics laws -- has numerous applications, from biological investigations of protein folding and other life processes, to the design of the next generation of power plants.
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The first 3-D map of the universe

   An International team of scientists from CNRS (France), CEA, (France) and Caltec (USA) made the first 3-D map of dark matter in the universe using gravitational lensing effects. The team analyzed the Cosmos field, the largest field of galaxies ever observed with the Hubble space telescope. This study can be found in the Jan. 7, 2007, issue of Nature.
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'Love triangle' astronaut charged

   An astronaut who drove from Texas to Florida to confront a supposed love rival is charged with attempted kidnapping.
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Paternity Tests: Not Just for the Rich (U.S. News & World Report)

   U.S. News & World Report - Not so very long ago, fatherhood had a bit of mystery to it. No more. Advances in genetics have made paternity tests one of the most simple and reliable medical tests available.
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Russia a safe option for energy-starved Japan (AFP)

   

Russian Prime Minister Mikhail Fradkov (L) looks on as Japanese Prime Minister Shinzo Abe (R) speaks to reporters after a signing ceremony for cooperation agreements with Japan at the latter's official residence in Tokyo. Despite rocky political relations, Japan needs Russia for gas and oil imports as the energy-hungry Asian power tries to ease its dependence on the volatile Middle East, analysts say.(AFP/Pool/Toshiyuki Aizawa)AFP - Despite rocky political relations, Japan needs Russia for gas and oil imports as the energy-hungry Asian power tries to ease its dependence on the volatile Middle East, analysts say.



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Ala. school warned hours before tornado (AP)

   

Damage from Thursday's tornado at Enterprise High School is shown, Friday, March 2, 2007, in Enterprise, Ala.  Eight students at the school were killed Thursday when a tornado tore into the building, knocking down walls and collapsing a roof onto them as they sought safety in a hallway. (AP Photo/Rob Carr)AP - Administrators at a high school where eight students died in a tornado were warned about severe weather nearly three hours before the twister struck, raising questions Friday about whether classes should have been dismissed earlier.



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