Sunday, December 13, 2009

Three New Planets Found Orbiting Star Similar To Sun


From The Telegraph:

Three new planets have been found orbiting a nearby star that is almost identical to the Sun.

The planets, forming a mini-solar system, circle the star 61 Virginis which is just 27.8 light years away and can be seen with the naked eye.

They have masses ranging from 5.3 to 24.9 times that of the Earth.

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Trying To Stop An International "Arms Race" In Cyberspace


In Shift, U.S. Talks To Russia On Internet Security -- New York Times

The United States has begun talks with Russia and a United Nations arms control committee about strengthening Internet security and limiting military use of cyberspace.

American and Russian officials have different interpretations of the talks so far, but the mere fact that the United States is participating represents a significant policy shift after years of rejecting Russia’s overtures. Officials familiar with the talks said the Obama administration realized that more nations were developing cyberweapons and that a new approach was needed to blunt an international arms race.

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My Comment: This is a major policy shift for the U.S. The key paragraph in this report is the following:

The mere fact that the United States is participating represents a significant policy shift after years of rejecting Russia’s overtures. Officials familiar with the talks said the Obama administration realized that more nations were developing cyberweapons and that a new approach was needed to blunt an international arms race.

The problem is that I do not see how it is possible to regulate and blunt the development of software that may (or may not) contravene any future agreements .... let alone establishing a monitoring agency that will have the resources to verify compliance for any future agreement.

Climate Change Emails Row Deepens As Russians Admit They DID Come From Their Siberian Server

Agenda: An Iceberg projection highlighting the Copenhagen UN summit shows the high level of political interest in climate change - and why scientists may be desperate to prove it is a man-made problem we can solve

From The Daily Mail:

The claim was both simple and terrifying: that temperatures on planet Earth are now ‘likely the highest in at least the past 1,300 years’.

As its authors from the United Nations Intergovernmental Panel on Climate Change (IPCC) must have expected, it made headlines around the world.

Yet some of the scientists who helped to draft it, The Mail on Sunday can reveal, harboured uncomfortable doubts.

In the words of one, David Rind from the US space agency Nasa, it ‘looks like there were years around 1000AD that could have been just as warm’.

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Do Truth Serums Work?

The Straight Dope:

Truth serums are based on a phenomenon known since ancient times, when Pliny the Elder coined the phrase in vino veritas: "in wine, truth." He meant anything that lowers your inhibitions is likely to cause you to say things you'd normally keep secret. Unfortunately for cops and CIA interrogators, what you spill isn't necessarily the truth.

Although people have been plying one another with liquor for centuries, the earliest confession induced using something stronger was reported in a 1903 criminal case involving a New York cop. He admitted under ether that he'd faked insanity when accused of killing his wife.

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Bacteria Engineered To Turn Carbon Dioxide Into Liquid Fuel

Genetically engineered strains of the cyanobacterium Synechococcus elongatus in a Petri dish. (Credit: Image courtesy of University of California - Los Angeles)

From Science Daily:

ScienceDaily (Dec. 11, 2009) — Global climate change has prompted efforts to drastically reduce emissions of carbon dioxide, a greenhouse gas produced by burning fossil fuels.

In a new approach, researchers from the UCLA Henry Samueli School of Engineering and Applied Science have genetically modified a cyanobacterium to consume carbon dioxide and produce the liquid fuel isobutanol, which holds great potential as a gasoline alternative. The reaction is powered directly by energy from sunlight, through photosynthesis.

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Wild Dingos Remember Human Gestures

A female dingo, Queensland, Australia. Research shows that although dingos are no longer domesticated, they still retain the ability to read human gestures. Credit: Bradley Smith

From Live Science:

Dingoes were semidomesticated village dogs once, in Southeast Asia. Then, about 4,000 years ago, they got loose in Australia, where their behavior reverted to that of their ancestor, the wolf. They howl, live in packs, and fear humans.

But even after so long on the lam they’ve retained at least one mark of domestication: an ability to read human gestures.

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Leasing The Sun

Workers for Solar City help to install solar panels on a Westminster, Calif., home. The company leases solar panels to homeowners in California and Arizona. Newscom/File

From The Christian Science Monitor:

Discount deals and tax incentives help homeowners go solar.

If faced with a $700-a-month electric bill, one might be inclined to cast one’s eyes heavenward. So it wasn’t surprising that Lisa Max took a good hard look at rooftop solar panels as a possible solution to her soaring energy costs. But the estimates “shocked” the San Rafael, Calif., homeowner.

It’s a typical scenario faced by US homeowners who are eyeing solar energy as a way to help the environment and save themselves some cash at the same time. When they crunch the numbers, the financial clouds descend.

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How To Fix Facebook's New Privacy Settings

How Facebook said good morning today.
(Credit: Screenshot by Rafe Needleman/CNET)

From CNET:

When logging in to Facebook Thursday, I, like millions of other people, got the directive to update my privacy settings to fit in to the new, "simplified," scheme.

But at their core, the Facebook privacy settings have not been simplified. Beyond the set-up page, Facebook's privacy controls are now more complex and more powerful. The new set-up page seems more designed to pry this privacy from you than give you access to the new, and excellent, controls that Facebook has put in place.

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Aid Agencies 'Must Use New Tools'

Photo: Ushahidi is a free and open-source information-sharing platform

From The BBC:

The "crowd-sourced" data that comes from victims of natural disasters and conflicts is now a crucial part in disaster management, says a new report.

The UN Foundation/Vodafone Foundation Partnership report outlines examples of new technologies that mitigate conflicts and save lives worldwide.

A report author said it reveals that aid agencies "fail to take advantage" of new tools available.

It says a number of challenges remain to maximise the tools' potential.

The partnership is a $30m, 5-year plan that joins the humanitarian arms of each group, with a focus on the technological aspects of aid.

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Drought Turns Governments To Cloud Seeding

Image: (CBS/iStockphoto)

From CBS News:

U.S. Behind Tide of Countries Increasingly Dealing with Water Shortages by Trying to Force Rain Fall.


(AP) On a mountaintop clearing in the Sierra Nevada stands a tall metal platform holding a crude furnace and a box of silver iodide solution that some scientists believe could help offer relief from searing droughts.

This is a cloud-seeding machine designed to increase rainfall by spraying a chemical vapor into the clouds. Under the right conditions, it can help water droplets grow heavy, coalesce and fall to the ground.

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NASA To Get Budget Boost For Exploration, Says Analyst

From New Scientist:

NASA is sure to get an injection of cash to rescue its faltering human space exploration programme, says a well-connected space policy analyst.

In October, a report by a White House panel headed by former Lockheed Martin CEO Norman Augustine said NASA would be unable to support meaningful human space exploration without at least $3 billion more per year.

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Piercing The Plasma: Ideas To Beat The Communications Blackout Of Reentry

HOT STUFF COMING THROUGH: Computer modeling by Krishnendu Sinha of the Indian Institute of Technology Bombay shows the heat flow a space capsule might generate during reentry. Hottest regions exceed 6,000 degrees Celsius (white, purple and red), coolest regions a few hundred (blue). Krishnendu Sinha Itt Bombay

From Scientific American:

Anticipating novel spacecraft and Mach 10 missiles, the U.S. Air Force considers new ways around an old problem.

The frustrating communications blackout that can occur when a spacecraft reenters the atmosphere caused some tense moments in the earlier years of the space age—perhaps most memorably during the crippled Apollo 13 mission. But the phenomenon could also affect communications with new aircraft and weapons systems being contemplated now by the U.S. Air Force, which hopes to find ways to pierce the blackout.

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Panhandling Hits The Internet

From Discovery News:

It's a recession Christmas. Even though retail and online sales improved this year over last year, the unemployment rate in the country was at 10 percent as of November. During the same month, the average duration a person remained unemployed was 28.5 weeks.
People are not rolling in dough.

In tough times, people sometimes reach out to friends, family, church or their community for help. Some take to streets and panhandle.

Read more ....

Boeing's 787 Dreamliner To Attempt First Flight Next Week

Dreamliner in Hangar Aviation Explorer

From Popular Science:

Boeing announced early this morning that its next generation airliner, the 787 Dreamliner, will take to the skies next Tuesday, December 15 at the company's Everett, WA proving grounds--if the Pacific Northwest's finicky weather cooperates.

The plane, the first with an airframe made of primarily composite materials, has faced numerous delays, putting the program a full two years behind schedule. Most recently, a structural fault was found in the side-of-body portion of the airframe that connects to the wings, causing the initial first flight planned for July to be canceled just a week before it was scheduled to take place.

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Saturday, December 12, 2009

Super-Massive Black Holes Observed At The Center of Galaxies

UKIRT infrared images of the four target galaxies show them in near-infrared color, where the images at different infrared wavelengths are assigned to represent red, green and blue colors. Observations with the Keck Interferometer have resolved the inner structure of the bright nucleus in all the four galaxies. The inferred ring-like structure obtained for NGC 4151 at the top-left is depicted in the top-right panel. The ring radius is 0.13 light years, corresponding to an extremely small ~0.5 milli-arcsecond angular size on the sky. The distance to each galaxy is indicated in million light-years, together with the redshift (z) of each galaxy. (Credit: M. Kishimoto, MPIfR)

From Science Daily:

Science Daily (Dec. 11, 2009) — An international team of scientists has observed four super-massive black holes at the center of galaxies, which may provide new information on how these central black hole systems operate.

Their findings are published in December's first issue of the journal Astronomy and Astrophysics.

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Did Ancient Sicilians Build Temples to 'Fit In?'

A Greek temple dating from the fifth century BC. It's more likely to have been dedicated to the Dioscuri (the Gemini twins) than Concord. Some researchers theorize that such temples on Sicily were built facing east as to adhere to Greek conventions. Credit: Dr. Alun Salt

From Live Science:

Ancient Greeks living in Sicily built their sacred temples to face the rising sun, new research suggests.

Almost all of the temples constructed on the island of Sicily during its Greek period over 2,500 years ago are oriented toward the eastern horizon, according to a new study by Alun Salt, an archaeoastronomer with the University of Leicester, in England.

Though many temples on mainland Greece also line up with the sunrise, it is less frequent on the mainland than on outlying colonies, implying an effort by outlying colonies to strengthen their ties to the home territory, Salt told LiveScience.

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Extreme Fear: Could You Handle It?

Illustration: Matt Murphy

From The Guardian:

When disaster strikes, whether you live or die depends on how you react to the crisis…

If you suddenly found yourself in a life-or-death crisis and had to make a decision that would either save your life or end it, are you confident you'd make the right one? People in the state of Victoria, Australia, faced just such a decision in February and March this year. For five weeks, catastrophic brush fires swept across the state. Government policy held that when fire threatened a neighbourhood, homeowners were to make a choice: stay and fight to save their houses, or evacuate early. They were explicitly instructed not to wait until the flames were close. Trying to run from an advancing wildfire is the surest way to die in it.

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DIY Book Scanners Turn Your Books Into Bytes


From Gadget Lab:

For nearly two years, Daniel Reetz dreamed of a book scanner that could crunch textbooks and spit out digital files he could then read on his PC.

Book scanners, like the ones Google is using in its Google Books project, run into thousands of dollars, putting them out of the reach of a graduate student like Reetz. But in January, when textbook prices for the semester were listed, Reetz decided he would make a book scanner that would cost a fraction of commercially available products.

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Top 10 Yahoo! Internet Searches Of 2009

Photo: Britney Spears -- who dominated Yahoo!'s Top 10 Overall Searches for the past four years -- dropped from the No. 1 position to No. 5 this year. (CBS)

From CBS News:

Yahoo! Web Life Editor Shares the Hottest Internet Topics of the Year.

(CBS) One of the most telling ways to assess our national interest in economics, politics, and entertainment is to analyze the top web searches of the year. So what are the most searched topics on Yahoo! this year?

Heather Cabot, Yahoo! Web life editor, shared on "The Early Show" what the hottest web topics were in 2009 and what they say about Americans and our national consciousness.

TOP TEN OVERALL YAHOO! SEARCHES FOR 2009
1. Michael Jackson
2. Twilight
3. WWE
4. Megan Fox
5. Britney Spears
6. Naruto (Japanese Anime)
7. American Idol
8. Kim Kardashian
9. NASCAR
10. Runescape

So what overall does this list tells us?

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The Perfect Way To Slice A Pizza

Solving essential life problems (Image: Eric Savage/Getty)

From The New Scientist:

LUNCH with a colleague from work should be a time to unwind - the most taxing task being to decide what to eat, drink and choose for dessert. For Rick Mabry and Paul Deiermann it has never been that simple. They can't think about sharing a pizza, for example, without falling headlong into the mathematics of how to slice it up. "We went to lunch together at least once a week," says Mabry, recalling the early 1990s when they were both at Louisiana State University, Shreveport. "One of us would bring a notebook, and we'd draw pictures while our food was getting cold."

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