A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Friday, March 19, 2010
Shortage of Rare Earth Minerals May Cripple U.S. High-Tech, Scientists Warn Congress
From Popular Science:
On the sunnier side, rare earths could power a future generation of clean tech.
All those hybrid and electric cars, wind turbines and similar clean tech innovations may count for nothing if the U.S. cannot secure a supply of rare earth minerals. Ditto for other advanced telecommunications or defense technologies, scientists told a U.S. House subcommittee.
Read more ....
New Password-Stealing Virus Targets Facebook
From ABC News:
Virus Attempts to Steal Banking Passwords, Other Sensitive Information.
BOSTON (Reuters) - Hackers have flooded the Internet with virus-tainted spam that targets Facebook's estimated 400 million users in an effort to steal banking passwords and gather other sensitive information.
The emails tell recipients that the passwords on their Facebook accounts have been reset, urging them to click on an attachment to obtain new login credentials, according to anti-virus software maker McAfee Inc.
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Virus Attempts to Steal Banking Passwords, Other Sensitive Information.
BOSTON (Reuters) - Hackers have flooded the Internet with virus-tainted spam that targets Facebook's estimated 400 million users in an effort to steal banking passwords and gather other sensitive information.
The emails tell recipients that the passwords on their Facebook accounts have been reset, urging them to click on an attachment to obtain new login credentials, according to anti-virus software maker McAfee Inc.
Read more ....
Mysterious 'Dark Flow' May Be Tug Of Other Universe
The galaxy cluster 1E 0657-56 (known as the Bullet Cluster) lies 3.8 billion light-years away. It's one of hundreds that appear to be carried along by a mysterious cosmic flow. NASA/STScI/Magellan/U.Arizona/D.Clowe et al.
From Discovery News:
A structure, possibly another universe beyond the horizon of our own, appears to be pulling at our world.
The universe is not only expanding -- it's being swept along in the direction of constellations Centaurus and Hydra at a steady clip of one million miles per hour, pulled, perhaps, by the gravity of another universe.
Scientists have no idea what's tugging at the known world, except to say that whatever it is likely dates back to the fraction of the second between the universe's explosive birth 13.7 billion years ago and its inflation a split second later.
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Thursday, March 18, 2010
Astronomers Discover Most Primitive Supermassive Black Holes Known
This artist's conception illustrates one of the most primitive supermassive black holes known (central black dot) at the core of a young, star-rich galaxy. Astronomers using NASA's Spitzer Space Telescope have uncovered two of these early objects, dating back to about 13 billion years ago. The monstrous black holes are among the most distant known, and appear to be in the very earliest stages of formation, earlier than any observed so far. Unlike all other supermassive black holes probed to date, this primitive duo, called J0005-0006 and J0303-0019, lacks dust. As the drawing shows, gas swirls around a black hole in what is called an accretion disk. Usually, the accretion disk is surrounded by a dark doughnut-like dusty structure called a dust torus. But for the primitive black holes, the dust tori are missing and only gas disks are observed. This is because the early universe was clean as a whistle. Enough time had not passed for molecules to clump together into dust particles. Some black holes forming in this era thus started out lacking dust. As they grew, gobbling up more and more mass, they are thought to have accumulated dusty rings. This illustration also shows how supermassive black holes can distort space and light around them (see warped stars behind black hole). Stars from the galaxy can be seen sprinkled throughout, and distant mergers between other galaxies are illustrated in the background. (Credit: NASA/JPL-Caltech)
From Science Daily:
Science Daily (Mar. 18, 2010) — Astronomers have come across what appear to be two of the earliest and most primitive supermassive black holes known. The discovery, based largely on observations from NASA's Spitzer Space Telescope, will provide a better understanding of the roots of our universe, and how the very first black holes, galaxies and stars all came to be.
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Giant Redwood Trees Endured Frequent Fires Centuries Ago
A prescribed burn was conducted in July 2001 in the Giant Forest of Sequoia National Park. The giant redwoods endured frequent fires from the yeas 800 to 1300. Human activity reduced fires in recent decades but now scientists have reintroduced fire to the ecosystem. Credit: Tony C. Caprio
From Live Science:
Ancient trees pack a record of ancient events. And now scientists have used 52 of the world's oldest trees — giant sequoia redwoods in California's western Sierra Nevada — to show that the region was plagued by drought and fire from the year 800 through the year 1300.
Scientists reconstructed a 3,000-year history of fire by dating fire scars on the inland sequoias (Sequoiadendron giganteum) in the Giant Forest of Sequoia National Park. Individual giant sequoias can live more than 3,000 years.
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Tough Coatings For Airplanes
Image: Paper for airplanes: This paper (top), made from layers of tiny clay discs and a polymer (seen under the microscope at bottom), might be used as a strong, lightweight coating for buildings and airplanes. Credit: Andreas Walther
From Technology Review:
A strong material inspired by abalone shells could be applied over large areas.
For decades, materials scientists have looked to naturally existing composites as inspiration for tough, lightweight materials that could lighten vehicles. Such materials could save on fuel costs, protect airplanes, and be used in engine turbines that run more efficiently. The material that lines abalone shells, called nacre, has been of particular interest: it's lightweight and strong, yet shatter-resistant. But mimicking the microscale structures responsible for its properties has been difficult, and hasn't resulted in materials that can be manufactured on a large scale.
Read more ....
From Technology Review:
A strong material inspired by abalone shells could be applied over large areas.
For decades, materials scientists have looked to naturally existing composites as inspiration for tough, lightweight materials that could lighten vehicles. Such materials could save on fuel costs, protect airplanes, and be used in engine turbines that run more efficiently. The material that lines abalone shells, called nacre, has been of particular interest: it's lightweight and strong, yet shatter-resistant. But mimicking the microscale structures responsible for its properties has been difficult, and hasn't resulted in materials that can be manufactured on a large scale.
Read more ....
Intel Plans To Turn Its Tiny Atom Chip Into A Big Brand
From The Guardian:
Atom processors have become popular in netbooks, but Intel's Brian Fravel is trying to turn it into a brand that will get consumers buying Intel-based interactive TV sets, set-top boxes and lots of portable devices.
Technology can be challenging for brand managers, because "technology is all about change, and brand's all about consistency: there's a constant push-pull between those two things," says Brian Fravel, director of Intel's Brand Strategy & Management.
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Bigelow Aerospace: Professional Astronauts Sought By American Space Firm
Only professionals with space flight experience need apply, such as British Nasa astronaut Nicholas Patrick, pictured here holding on to the International Space Station. Photo: NASA
From The Telegraph:
An American space holiday firm, Bigelow Aerospace, has become the first commercial company to advertise for professional astronauts.
The firm, founded by Bob Bigelow, the head of a budget motel chain in the US, wants experienced spacemen working in orbit and on the ground.
Only professionals with space flight experience need apply, which limits the pool of possible applicants worldwide to little more than 500.
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First Peek At Weather Inside Jupiter's Giant Red Spot
This visible light image of Jupiter's red spot shows how we would view the region with the naked eye
From The Daily Mail:
Jupiter's great red spot, which is the site of an enormous that could swallow Earth twice over, has fascinated astronomers for centuries.
Now scientists have made their first detailed weather map of the mysterious swirling region, thanks to new ground-breaking thermal images taken by the European Southern Observatory's Very Large Telescope.
The map has linked the storm system's temperature, winds, pressure and composition with its distinctive reddish colour.
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Planck Spies Massive Dust Clouds
From The BBC:
Europe's Planck observatory has given another brief glimpse of its work.
The space telescope's main goal is to map the "oldest light" in the Universe, but this data is being kept under wraps until the surveying is complete.
Instead, Planck scientists have released a snapshot of the colossal swathes of cold dust that spread through the Milky Way galaxy.
Such imagery will be very useful to astronomers seeking to understand star formation.
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NASA And U.S. Navy Pledge To Save Silicon Valley's Massive Airship Hangar
Hangar One An old airship home needs a reskin U.S. Navy
From Popular Science:
The landmark Hangar One needs a giant new Teflon skin to replace its toxic siding, but funding is an issue.
Hangar One's behemoth structure once housed airships such as the doomed U.S.S. Macon, and is so large that clouds can supposedly form and rain inside it. Now NASA and the U.S. Navy have promised to replace the hangar's toxic siding with a new Teflon-covered fiberglass fabric skin, The Register reports.
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Hacker Disables More Than 100 Cars Remotely
From Threat Level:
More than 100 drivers in Austin, Texas found their cars disabled or the horns honking out of control, after an intruder ran amok in a web-based vehicle-immobilization system normally used to get the attention of consumers delinquent in their auto payments.
Police with Austin’s High Tech Crime Unit on Wednesday arrested 20-year-old Omar Ramos-Lopez, a former Texas Auto Center employee who was laid off last month, and allegedly sought revenge by bricking the cars sold from the dealership’s four Austin-area lots.
Read more ....
More than 100 drivers in Austin, Texas found their cars disabled or the horns honking out of control, after an intruder ran amok in a web-based vehicle-immobilization system normally used to get the attention of consumers delinquent in their auto payments.
Police with Austin’s High Tech Crime Unit on Wednesday arrested 20-year-old Omar Ramos-Lopez, a former Texas Auto Center employee who was laid off last month, and allegedly sought revenge by bricking the cars sold from the dealership’s four Austin-area lots.
Read more ....
Fake Dark Matter Could Show What Real Stuff Is Like
From New Scientist:
The key to understanding dark matter is in our grasp – we've got something here on Earth that works just the same way.
Dark matter is hypothetical, invisible stuff that cosmologists invoke to explain why the universe appears to contain much less matter than their calculations say it should, and some think that it is made up of hypothetical particles called axions. Even though we haven't yet found a genuine axion, however, materials called topological insulators can be used to mimic them, say Shoucheng Zhang and colleagues at Stanford University, California. Magnetic fluctuations in the materials produce a field just like an axion field, his team found.
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Russia Could Build Extra Soyuz Capsule For Space Tours
From RIA Novosti:
An additional Soyuz capsule could be built especially for commercial space tourists, the head of Russia's Energia space corporation said on Thursday.
"Construction of an additional Soyuz spaceship could start in the middle of the year," Vitaly Lopota said.
Energia currently manufactures four single-use three-man Soyuz capsules a year, but when the number is raised to five, it could resume space tours that it has put on hold for now.
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How Cells Protect Themselves From Cancer
From Science Daily:
Science Daily (Mar. 18, 2010) — Cells have two different protection programs to safeguard them from getting out of control under stress and from dividing without stopping and developing cancer. Until now, researchers assumed that these protective systems were prompted separately from each other. Now for the first time, using an animal model for lymphoma, cancer researchers of the Max Delbrück Center (MDC) Berlin-Buch and the Charité -- University Hospital Berlin in Germany have shown that these two protection programs work together through an interaction with normal immune cells to prevent tumors.
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Congress To Address U.S. Rare Earth Shortage
From Live Science:
Members of Congress introduced a new bill this week that would resurrect the U.S. rare earths supply-chain and create a national stockpile for military and tech industry uses.
Rare earth elements have become irreplaceable in clean tech such as hybrid and electric car motors, high-efficiency light bulbs, solar panels and wind turbines. They also play a key role in defense technologies such as cruise missiles, radar and sonar and precision-guided weapons.
Read more ....
Members of Congress introduced a new bill this week that would resurrect the U.S. rare earths supply-chain and create a national stockpile for military and tech industry uses.
Rare earth elements have become irreplaceable in clean tech such as hybrid and electric car motors, high-efficiency light bulbs, solar panels and wind turbines. They also play a key role in defense technologies such as cruise missiles, radar and sonar and precision-guided weapons.
Read more ....
The Oldest Trees On The Planet
From Wired Science:
Trees are some of the longest-lived organisms on the planet. At least 50 trees have been around for more than a millenium, but there may be countless other ancient trees that haven’t been discovered yet.
Trees can live such a long time for several reasons. One secret to their longevity is their compartmentalized vascular system, which allows parts of the tree to die while other portions thrive. Many create defensive compounds to fight off deadly bacteria or parasites.
Read more ....
Searching For Another Earth
Photo: Planet finder: The CoRot satellite is operated by the French Space Agency CNES, and its mission is to search for planets outside our solar system. Here it’s undergoing mechanical qualification tests prior to launch. Credit: Alcatel Alenia Space/JL Bazile
From The Technology:
A new discovery advances the hunt for Earthlike planets beyond our solar system.
An international team of astronomers has discovered an exoplanet--one outside our solar system--that has a more Earthlike orbit than any alien planet discovered so far using the same technique.
The planet, called CoRot-9b, was discovered by the French-operated satellite CoRot, which has been in orbit since 2006. The spacecraft detected CoRot-9b by measuring the dimming of its star's brightness as the planet passed in front of it, a technique called "transit observation." The small dip in brightness allows the planet's size to be calculated. By measuring the amount of time it takes the planet to complete its orbit, researchers can determine the planet's distance from its star.
Read more ....
From The Technology:
A new discovery advances the hunt for Earthlike planets beyond our solar system.
An international team of astronomers has discovered an exoplanet--one outside our solar system--that has a more Earthlike orbit than any alien planet discovered so far using the same technique.
The planet, called CoRot-9b, was discovered by the French-operated satellite CoRot, which has been in orbit since 2006. The spacecraft detected CoRot-9b by measuring the dimming of its star's brightness as the planet passed in front of it, a technique called "transit observation." The small dip in brightness allows the planet's size to be calculated. By measuring the amount of time it takes the planet to complete its orbit, researchers can determine the planet's distance from its star.
Read more ....
'Mobile Apps Will Outsell CDs By 2012'
From The Guardian:
Report for app store GetJar forecasts number of downloads will rise from 7bn in 2009 to almost 50bn in 2012.
Mobile app downloads are expected to increase from more than 7bn downloads in 2009 to almost 50bn in 2012, according to a report.
The independent study, carried out by Chetan Sharma Consulting for Getjar, the world's second biggest app store, forecasts that the global mobile application economy will be worth $17.5bn in 2012, more than CD sales, which it predicts will be $13.83bn.
Read more ....
Bubbles In Guinness 'Go Down Not Up' Say Scientists
From The Telegraph:
Bubbles in Guinness really do go down instead of up, according to a study by scientists to mark St Patrick's Day.
As pubs stocked up with extra supplies of the black stuff in preparation for Ireland's national celebrations on Wednesday, scientists offered an explanation for why the famous Irish brew behaves so oddly.
Pour just about any other pint of beer, and the bubbles can be seen to obey the normal laws of physics. Filled with buoyant gas, they rise to the surface and form a frothy head.
Read more ....
Bubbles in Guinness really do go down instead of up, according to a study by scientists to mark St Patrick's Day.
As pubs stocked up with extra supplies of the black stuff in preparation for Ireland's national celebrations on Wednesday, scientists offered an explanation for why the famous Irish brew behaves so oddly.
Pour just about any other pint of beer, and the bubbles can be seen to obey the normal laws of physics. Filled with buoyant gas, they rise to the surface and form a frothy head.
Read more ....
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