Saturday, August 15, 2009

Physicists Hold Breath As Large Hadron Collider Prepares To Rise From Ashes

A region between two magnets in the LHC that was crushed in the incident on 19 September 2008. Photograph: Public Domain

From The Guardian:

If all goes to plan, the LHC will come back to life in November. Sam Wong explains the measures being taken to prevent another catastrophic failure, and gauges the mood of physicists at Cern. Can they bag the Higgs before the Americans?

It's been nearly a year since the world's biggest science experiment, the Large Hadron Collider (LHC), was fired up for the first time in a flurry of excitement at Cern, the European Centre for Nuclear Research in Switzerland. But ever since a catastrophic explosion in the particle accelerator's tunnel just nine days after startup, the gargantuan machine has sat idling, to the acute frustration and no little embarrassment of all involved.

Read more ....

New Sub "War" Range May Harm Rare Whales, Critics Say

A right whale mother and calf swim off Florida. Approved in August 2009, a planned U.S. submarine war-games zone has conservationists concerned for the survival of the North Atlantic right whale. The species numbers 300 to 350, and its only known calving ground is near the soon-to-be-built testing range. Photograph courtesy National Oceanic Atmospheric Association/AP

From National Geographic:

After considering several candidates, the U.S. Navy announced last week that it will build its latest submarine warfare training facility in the waters off Jacksonville, Florida. (See map.)

But even though the site won't open until 2014, the new tenant is already having trouble with its neighbors.

That's because the chosen site for the Undersea Warfare Training Range is just 30 miles (48 kilometers) from the only known calving grounds of the North Atlantic right whale.

Read more ....

My Comment: I am sure that every other maritime power in the world .... from China to India, Russia to Venezuela .... are just as (cough cough) equally concerned about the whales.

From my point of view I say forget about these maritime powers, we should focus on the native peoples of America who kill scores of whales each year off the Alaskan and Canadian coasts for "traditional reasons".

But all I hear is silence.

Tech Heroes Of The Past: Where Are They Now?

From Pingdom:

Have you ever wondered what the guy who invented the World Wide Web is up to these days? What about the guys who created Photoshop, or the one who created the PHP scripting language?

You may not recognize all of these people, but you’ll definitely recognize what they’ve accomplished. These are people who have made great contributions to computer and Internet technology in the past… but what are they up to now?

This list is a starting point, so help us add to it in the comments!

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One Nano-Step Closer To Weighing A Single Atom

Composite image showing TEM images and schematic of bipyramid-shaped particles and time response of vibration. (Credit: Dr Matthew Pelton from the Centre for Nanoscale Materials, Argonne National Laboratory, Illinois)

From Science Daily:

ScienceDaily (Aug. 14, 2009) — By studying gold nanoparticles with highly uniform sizes and shapes, scientists now understand how they lose energy, a key step towards producing nanoscale detectors for weighing any single atom.

Such ultrasensitive measurements could ultimately be used in areas such as medical research and diagnostics, enabling the detection of minuscule disease-causing agents such as viruses and prions at the single molecule level.

Read more ....

NASA Drops Probes Into Volatile Volcano

Mount St. Helens is one of the most active volcanoes in the United States. Credit: USGS

From Live Science:

High-tech sensor pods were recently air lifted into the mouth of a volcano to monitor hot spots and provide early warning if the peak starts to blow.

The sensors are part of a NASA project to study volcanoes from the inside.

On July 14 scientists lowered the pods into the mouth of Washington's Mount St. Helens, one of the most active volcanoes in the United States.

The project aims to improve our ability to predict impending eruptions, both on Earth and on other planets.

Read more ....

Legacy B-52 To Launch Futuristic WaveRider

The X-51A WaveRider hypersonic flight test vehicle was uploaded to an Air Force Flight Test Center B-52 for fit testing at Edwards Air Force Base. (Credit: USAF)

From CNET:

The X-51A WaveRider is one step closer to its inaugural test flight later this year, now that airmen at Edwards Air Force Base have successfully "mated" the scramjet-propelled vehicle to a B-52 Stratofortress.

In December, an Air Force Flight Test Center B-52 is scheduled to papoose the X-51A to 50,000 feet over the Pacific Ocean before cutting it loose. At that point, a solid rocket booster from an ATACMS missile will fire up, accelerating the X-51 to about Mach 4.5. That's when the supersonic combustion ramjet kicks in, pushing the WaveRider to more than Mach 6 for up to five minutes, longer than all of its predecessors combined. NASA tests have reached Mach 9.6, or nearly 7,000 mph, according to some reports, but not for very long. The previous record was less than 10 seconds. Flight data will be telemetered back to Edwards Force Base before the X-51A test vehicle crashes into the Pacific.

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NASA's Moon Plan Too Ambitious, Obama Panel Says

From The Miami Herald:

A panel reviewing NASA's current plans for human space flight will report that there is no realistic way to return to the moon by 2020 -- or even 2028.

WASHINGTON -- NASA doesn't have nearly enough money to meet its goal of putting astronauts back on the moon by 2020 -- and it might be the wrong place to go, anyway. That's one of the harsh messages emerging from a sweeping review of NASA's human space flight program.

Read more ....

NASA Completes First Test Rocket to Replace Shuttle

From Yahoo News/Space:

NASA has finished building the first of its new Ares I rockets slated to replace the aging space shuttle fleet and return astronauts to the moon - a gleaming white booster due to blast off this fall.

The Ares I-X rocket is the inaugural booster in NASA's first new rocket line for crew transport in more than 25 years. It is scheduled to launch Oct. 31 on a demonstration flight to prove the viability of the Ares I rocket to haul NASA's new astronaut-carrying Orion spacecraft into orbit.

Read more
....

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.

Read more ....

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 ....