Saturday, August 15, 2009

Second Backwards Planet Found, A Day After The First

The planet HAT-P-7b, which is about 1.4 times as wide as Jupiter and 1.8 times as massive, seems to orbit its star in the opposite direction to the star's spin (Illustration: Leiden Observatory)

From New Scientist:


Just a day after the announcement of the first extrasolar planet found orbiting its star backwards, two other teams announced the discovery of a second one.

"It is funny that the two good cases for really misaligned orbits, even retrograde orbits, have come at around the same time," says Joshua Winn of MIT, lead author of one of the new papers.

Both Winn's team and another, led by Norio Narita at the National Astronomical Observatory of Japan, used the Japanese Subaru telescope to observe planet HAT-P-7b, a previously known planet about 1000 light years from Earth that was recently observed by NASA's new planet-hunting satellite Kepler.

Both teams found that the planet's orbit is wildly tilted with respect to its star's equator.

Read more ....

Women Like To 'Poach' Attached Men

A scientific study has found evidence that women really do have a preference for men who are attached Photo: REUTERS

From The Telegraph:

It's something that wives and girlfriends have long suspected – that women like to target men who are already in relationships.

Now a scientific study has found evidence that their fears are well founded, and that women really do have a preference for men who are attached.

In a phenomenon known as 'mate poaching' – but soon to be dubbed the 'Angelina Jolie effect' – women expressed a clear preference for those who were unavailable.

Read more ....

Friday, August 14, 2009

First Human Gene Implicated In Regulating Length Of Human Sleep

The discovery of the first gene involved in regulating the optimal length of human sleep offers a window into a key aspect of slumber. (Credit: iStockphoto/Diane Diederich)

From Science Daily:

ScienceDaily (Aug. 14, 2009) — Scientists have discovered the first gene involved in regulating the optimal length of human sleep, offering a window into a key aspect of slumber, an enigmatic phenomenon that is critical to human physical and mental health.

The team, reporting in the Aug. 14, 2009 issue of Science, identified a mutated gene that allows two members of an extended family to thrive on six hours of sleep a day rather than the eight to eight-and-a-half hours that studies have shown humans need over time to maintain optimal health. Working from this discovery, the scientists genetically engineered mice and fruit flies to express the mutated gene and study its impact.

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5 UAVs That Are Going Places—Alone (With Video!)

X-47B Navy UCAS

From Popular Mechanics:

Gawkers from the armed services, media and defense industry gathered this week in 98 degree heat to watch military robot demonstrations at the Unmanned Systems Demo, an event hosted by the military and the Association for Unmanned Vehicle Systems International. The crowd braved the sweltering Maryland summer to watch companies large and small fly sensor-studded UAVs on an unused naval aviation airfield. Here’s a roundup of five of the most notable flying droids on hand, with video of those that displayed their antics.

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What a "Facebook Browser" Means For the Web

A screenshot from RockMelt.com

From Technology Review:

RockMelt could be the realization of the company's efforts to create a more social Web.

Rumors surfaced yesterday of a new "Facebook browser" called RockMelt, with a star-studded cast of backers and employees that includes Netscape founder Marc Andreessen and Blake Ross and Joe Hewitt of Firefox fame.

There are no clear reports yet of what the Facebook browser would be like, but it's unlikely to be a simple Facebook client and I doubt that such smart people would simply copy an existing "social" Web browsers such as Flock.

Read more ....

Will Electric Cars Wreck The Grid?

PLUG-IN PROBLEM?: Some power generators worry that too many electric cars could wreak havoc on local electric grids. © GM Corp.

From Scientific American:

Plug-in electric cars could destabilize the distribution of power.

LONG BEACH, Calif. -- Plug-in electric cars could destabilize the distribution of power, a utility executive cautioned at a conference here this week.

Ed Kjaer, director of Southern California Edison's electric transportation advancement program, said plug-in manufacturers, designers and component makers are poised to capitalize on a "perfect storm" that could push electric cars into the mainstream. Kjaer noted that 10 to 12 carmakers are ready to launch plug-in models between 2010 and 2012, creating a sense of "incredible excitement" around a sector that has seen its fair share of false starts.

Read more ....

Fire Used to Make Better Tools 75,000 Years Ago


From :Live Science

Early humans crossed a threshold around 75,000 years ago, when they started painting symbols, carving patterns and making jewelry. A new study found they also began to use fire to make tools around that time.


Until now, this complex, multi-step process for tool making was only known to occur as recently as 25,000 years ago in Europe. But the new findings show this breakthrough occurred much earlier, and in Africa, not Europe.
By heating up stones in a fire before chipping away at them to make blades, early humans could make tools sharper and produce them more efficiently.
Scientists think this advancement represents a link between the earlier use of fire for cooking and warmth, and the later production of ceramics and metals


Antarctic Meltdown: Glacier Larger Than Scotland Shrinking FOUR Times Faster Than Last Decade

In decline: The Pine Island Glacier drains an enormous volume of ice from
the West Antarctic Ice Sheet to the sea

From The Daily Mail:

An Antarctic glacier twice the size of Scotland is melting much faster than scientists had bargained for.

The Pine Island Glacier in west Antarctica is losing ice four times quicker than a decade ago, researchers warned today.
If the thinning continues to accelerate at this speed, the main section of the glacier will be gone within the next 100 years - six times faster than was previously estimated.

Read more ....

Spoon-Bending For Beginners: Teaching Anomalistic Psychology To Teenagers

Uri Geller holds a spoon he claims to have bent using supernatural powers. Photograph: David Furst/AFP/Getty Images

From The Guardian:

Why introduce students to a field of psychology investigating claims that fly in the face of mainstream science? Chris French can think of several good reasons.

From next month, potentially thousands of teenagers at schools and colleges throughout the UK will start lessons that deal with telepathy, psychokinesis, psychic healing, near-death experiences and talking to the dead. Surely the minds of the nation's youth will be corrupted by all this mumbo-jumbo?

Read more ....

India's Water Use 'Unsustainable'

Much of the water used in paddy fields is pumped from underground.

From The BBC:

Parts of India are on track for severe water shortages, according to results from Nasa's gravity satellites.

The Grace mission discovered that in the country's north-west - including Delhi - the water table is falling by about 4cm (1.6 inches) per year.

Writing in the journal Nature, they say rainfall has not changed, and water use is too high, mainly for farming.

The finding is published two days after an Indian government report warning of a potential water crisis.

That report noted that access to water was one of the main factors governing the pace of development in the world's second most populous nation.

Read more ....

Experiments Push Quantum Mechanics To Higher Levels

John Martinis and Matthew Neeley are researchers at University of California - Santa Barbara. (Credit: George Foulsham, Office of Public Affairs, UCSB)

From Science Daily:

ScienceDaily (Aug. 13, 2009) — Scientists at UC Santa Barbara have devised a new type of superconducting circuit that behaves quantum mechanically – but has up to five levels of energy instead of the usual two. The findings are published in the August 7 issue of Science.

These circuits act like artificial atoms in that they can only gain or lose energy in packets, or quanta, by jumping between discrete energy levels. "In our previous work, we focused on systems with just two energy levels, 'qubits,' because they are the quantum analog of 'bits,' which have two states, on and off," said Matthew Neeley, first author and a graduate student at UCSB.

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Fire Used To Make Better Tools 75,000 Years Ago

Experimentally replicated blade tools produced with heat treated silcrete. Some of these tools may have been mounted unto a wood handle to create a tool with disposable blades, as pictured above. Credit: © Science/AAAS

From Live Science:

Early humans crossed a threshold around 75,000 years ago, when they started painting symbols, carving patterns and making jewelry. A new study found they also began to use fire to make tools around that time.

Until now, this complex, multi-step process for tool making was only known to occur as recently as 25,000 years ago in Europe. But the new findings show this breakthrough occurred much earlier, and in Africa, not Europe.

By heating up stones in a fire before chipping away at them to make blades, early humans could make tools sharper and produce them more efficiently.

Read more ....

Another Nutritional Challenge For Space Food

From L.A. Times:

You may have read yesterday’s story about the food scientists at NASA who have their hands full trying to figure out what astronauts will eat when they blast off on a three-year mission to Mars sometime after the year 2030. For a variety of reasons, the food served on the space shuttle and International Space Station won’t cut it – it’s too heavy, too bulky, and its chemistry makes it prone to spoilage after only a couple of years.

And now the NASA scientists have identified another problem: many of the essential vitamins, amino acids and fatty acids in the foods will degrade over the course of such a long mission.

Read more ....

Pictured: Stunning New Image Of Mars Show Half-Mile Wide Crater Complete With Sand Dunes

This image of the Victoria Crater in the Meridiani Planum region of Mars was taken by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter

From The Daily Mail:

It is one of the most dramatic images to ever emerge from Mars.

In fact, this extraordinary photograph is so clear that even the sand dunes at the base of the half-mile wide canyon are visible.

Experts even believe that they can see the tracks of a Mars lander on the left-hand corner of the Victoria Crater.

Read more ....

Scientists Reveal Why World's Highest Mountains Are At The Equator

Top: Aerial photograph of the Khumbu Glacier and the Everest Himalayan range
Bottom: Glacially eroded mountains in Jotunheimen in Norway. Photograph: David Lundbek Egholm (bottom) and Paula Bronstein/Getty Images

From The Guardian:

Ice and glacier coverage at lower altitudes in cold climates more important than collision of tectonic plates, researchers find.

Scientists have solved the mystery of why the world's highest mountains sit near the equator - colder climates are better at eroding peaks than had previously been realised.

Mountains are built by the collisions between continental plates that force land upwards. The fastest mountain growth is around 10mm a year in places such as New Zealand and parts of the Himalayas, but more commonly peaks grow at around 2-3mm per year.

Read more ....

Netscape Founder Backs New Browser

Photo: Marc Andreessen, Co-founder and General Partner, Andreessen Horowitz, in July. Phil McCarten/Reuters

From The New York Times:

SAN FRANCISCO — It has been 15 years since Marc Andreessen developed the Netscape Internet browser that introduced millions of people to the Internet.

After its early success, Netscape was roundly defeated by Microsoft in the so-called browser wars of the 1990s that dominated the Web’s first chapter.

Mr. Andreessen appears to want a rematch. Now a prominent Silicon Valley financier, Mr. Andreessen is backing a start-up called RockMelt, staffed with some of his close associates, that is building a new Internet browser, according to people with knowledge of his investment.

Read more ....

Options Narrow For Future Of Human Spaceflight

Photo: US human spaceflight panel chairman Norman Augustine listens to public comments at the U.S. Space and Rocket Center on July 29 in in Huntsville, Ala. Bob Gathany/AP

From Christian Science Monitor:

A panel moves closer to recommending where NASA should fly next, and how.

If the US simply maintains spending for human spaceflight at current levels, NASA will have enough money to build one new rocket to carry crews into space by 2020. But it will literally be a rocket to nowhere: The space agency will have no place to send it for at least another decade.

That stark message underlies options for the US human spaceflight program, which a 10-member panel will present to the Obama administration when it wraps up its work at the end of August. The panel's assignment: Present the president with choices that are sustainable, fit within current budget constraints, yet represent bold steps beyond low-Earth orbit.

Read more ....

Top 10 Overlooked Buildings

The Golden Pavilion of Rokuonji Temple in Kyoto, Japan.
Photograph by: Koichi Kamoshida, Getty Images

From The Montreal Gazette:

SYDNEY -- Lists of beautiful buildings laud the Taj Mahal, the Eiffel Tower, and at least one token Frank Gehry building, but there are dozens of other equally beautiful choices that somehow always seem to remain unnoticed.

Members and editors of VirtualTourist.com (www.virtualtourist.com) have compiled a list of what they think are the "World's Top 10 Most Overlooked Beautiful Buildings and Structures." Reuters has not endorsed this list.

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BMW ActiveHybrid X6: The Most PowerfulHhybrid In History

BMW ActiveHybrid X6

Officially Official: 2010 BMW ActiveHybrid X6 -- Autoblog

The BMW X6 ActiveHybrid has arrived, and as previously covered, the new gas-electric X6 will be the most powerful hybrid in history, with 480 peak horsepower and diesel-like plateau of 575 lb-ft of torque.

That impressive powertrain consists of twin electric motors (delivering 91 hp and 86 hp, respectively) and a twin-turbo 4.4-liter V8 engine. All those horses will be corralled through a seven-speed dual-mode transmission and BMW's xDrive all-wheel-drive system. The run to sixty will take just 5.4 seconds and the top speed will be limited to 130 miles per hour.

Read more ....

Thursday, August 13, 2009

Multiple Sclerosis Successfully Reversed In Mice: New Immune-suppressing Treatment Forces The Disease Into Remission

Dr. Jacques Galipeau of the Jewish General Hospital Lady Davis Institute for Medical Research and McGill University. (Credit: Claudio Calligaris/McGill University)

From Science Daily:

ScienceDaily (Aug. 12, 2009) — A new experimental treatment for multiple sclerosis (MS) completely reverses the devastating autoimmune disorder in mice, and might work exactly the same way in humans, say researchers at the Jewish General Hospital Lady Davis Institute for Medical Research and McGill University in Montreal.

MS is an autoimmune disease in which the body's own immune response attacks the central nervous system, almost as if the body had become allergic to itself, leading to progressive physical and cognitive disability.

Read more ....