Giant Meteorites Slammed Earth Around A.D. 500?

An asteroid hurtles toward Earth in an artist's rendering. Illustration by Detlev van Ravenswaay, Astrofoto, Peter Arnold Images, Photolibrary

From National Review:

Pieces of a giant asteroid or comet that broke apart over Earth may have crashed off Australia about 1,500 years ago, says a scientist who has found evidence of the possible impact craters.

Satellite measurements of the Gulf of Carpentaria (see map) revealed tiny changes in sea level that are signs of impact craters on the seabed below, according to new research by marine geophysicist Dallas Abbott.

Read more ....

Top British Scientist Says UN Panel Is Losing Credibility

From Times Online:

A LEADING British government scientist has warned the United Nations’ climate panel to tackle its blunders or lose all credibility.

Robert Watson, chief scientist at Defra, the environment ministry, who chaired the Intergovernmental Panel on Climate Change (IPCC) from 1997 to 2002, was speaking after more potential inaccuracies emerged in the IPCC’s 2007 benchmark report on global warming.

The most important is a claim that global warming could cut rain-fed north African crop production by up to 50% by 2020, a remarkably short time for such a dramatic change. The claim has been quoted in speeches by Rajendra Pachauri, the IPCC chairman, and by Ban Ki-moon, the UN secretary-general.

Read more ....

Before The Swiss Army Knife, What Did Soldiers Use?

(Click Image to Enlarge)
Inspired: The Roman army pen knife, a precursor to today's popular Swiss Army accessory

The Roman Army Knife: Or How The Ingenuity Of The Swiss Was Beaten By 1,800 Years -- The Daily Mail:

The world's first Swiss Army knife' has been revealed - made 1,800 years before its modern counterpart.

An intricately designed Roman implement, which dates back to 200AD, it is made from silver but has an iron blade.

It features a spoon, fork as well as a retractable spike, spatula and small tooth-pick.

Experts believe the spike may have been used by the Romans to extract meat from snails.

Read more ....

Surf's Up As Pacific Waves Grow

From New Scientist:

GOOD news surfers: waves in the north-east Pacific are getting taller, and the height of the most extreme "100-year" waves is increasing fastest.

Previous data had shown wave height to be increasing in the north-east Pacific and north Atlantic since the late 1980s. Now measurements from a deep-water buoy moored off the Oregon coast since the mid-1970s indicate that the "100-year" waves - the monster waves with a 1 per cent chance of occurring in any given year - could be 40 per cent larger than previous estimates, at 14 metres high.

Read more ....

Heinz' New Ketchup Packet Dips, Squeezes And Scores (With Video!)

From Popular Mechanics:

You know the fast food driving drill: Heading down the Interstate, you carefully unfold the wrapper to your burger and make a place on your lap. You reach for the french fries and follow one of two strategies—take them from the box, one-by-one and paint them with ketchup from the packet, quickly running out of your supply; or squeeze a puddle of Heinz on the wrapper for dipping, risking stained pants and messy hands. Isn't there a better way?

Read more ....

Airwaves Abandoned by TV Could Beam High-Speed Internet Everywhere

Internet in the Ether Brian Kaas Design

From Popular Science:

When TV went digital, Verizon, AT&T and other cellphone carriers shelled out a combined $19 billion for some of the freed-up airwaves, known as white spaces. Now wireless company Spectrum Bridge is using the parts that are still unclaimed to deliver high-speed Internet from its broadcast tower to your laptop computer.

Read more ....

Google To Air Ad During Super Bowl?

From CNET:

Perhaps Google CEO Eric Scmidt's tweet said it all.

"Can't wait to watch the Super Bowl tomorrow. Be sure to watch the ads in the 3rd quarter (someone said 'Hell has indeed frozen over')," he wrote Saturday.

This tweet appears to be a response to speculation by John Battelle, founder of Federated Media Publishing, that one of the world's most ad-diffident companies would be running a brand ad during the Big Game's third quarter. (Kickoff is just after 3:20 p.m. PST Sunday on CBS, publisher of CNET.)

Read more ....

Computers That Use Light Instead of Electricity? First Germanium Laser Created

Image: MIT researchers have demonstrated the first laser built from germanium that can produce wavelengths of light useful for optical communication. (Credit: Graphic by Christine Daniloff)

From Science Daily:

ScienceDaily (Feb. 5, 2010) — MIT researchers have demonstrated the first laser built from germanium that can produce wavelengths of light useful for optical communication. It's also the first germanium laser to operate at room temperature. Unlike the materials typically used in lasers, germanium is easy to incorporate into existing processes for manufacturing silicon chips. So the result could prove an important step toward computers that move data -- and maybe even perform calculations -- using light instead of electricity. But more fundamentally, the researchers have shown that, contrary to prior belief, a class of materials called indirect-band-gap semiconductors can yield practical lasers.

Read more ....

Genes Help Explain Who Gets Fit

From Live Science:

When you put in hours at the gym, you expect to get fitter. It turns out, that assumption doesn't hold true for everyone. A new study suggests specific genes may determine, at least in part, how much we really benefit from exercise.

While "benefit from exercise" can mean plenty of things, from slimming down to boosting one's ability to complete a marathon, the researchers specifically looked at what is called VO2 max, or aerobic capacity. This is a measure of how much blood your heart pumps and how much oxygen your muscles consume when they constrict to, say, move your legs on a treadmill.

Read more ....

Darwin Out Of Africa 45,000 Years Ago

Charles Darwin's family history has been mapped. His ancestors left Africa 45,000 years ago.

From Cosmos:

SYDNEY: The father of evolution Charles Darwin was a direct descendant of the Cro-Magnon people, whose entry into Europe 30,000 years ago heralded the demise of Neanderthals, scientists revealed.

Darwin, who hypothesised that all humans evolved from common ancestors in his seminal 1859 work On the Origin of Species, came from Haplogroup R1b, one of the most common European male lineages, said genealogist Spencer Wells.

Read more ....

Facebook, At 400 Million Users, Marks Its 6th Year

From San Francisco Chronicle:

On the sixth anniversary of the day Facebook was launched from a Harvard University dorm room, co-founder Mark Zuckerberg announced the social-networking firm had 400 million active members around the globe.

And Facebook celebrated both milestones Thursday night with a party at the company's Palo Alto headquarters and by rolling out yet another set of changes for its members' pages as a present.

Facebook has expanded dramatically in the past year. Just one year ago this month, there were only 175 million active members.

Read more ....

NASA Scraps Endeavour Launch: STS- 130 Delayed Until Monday Due To Clouds

The shuttle Endeavour approaches pad 39A at the Kennedy Space Center.
(Credit: Stephen Clark/Spaceflight Now)

From The New York Daily News:

Better luck Monday, NASA.

Clouds rolled in over Cape Canaveral early Sunday morning, causing the space administration to scrub a planned nighttime launch off the space shuttle Endeavour.

"Sometimes you just got to make the call," said shuttle commander George Zamka, disappointed by the cancellation. "We understand and we'll give it another try tomorrow night."

Read more ....

Endeavour To Deliver Space Station 'A Room With A View'

EARTHGAZING: Space shuttle Endeavour will deliver Node 3, also known as Tranquility, along with a panoramic cupola, seen in place on the International Space Station in an artist's conception. NASA

From The Christian Science Monitor:

Space shuttle Endeavor will bring a new seven-window module to the International Space Station. It'll be used as a utility room for air and water purification and for exercise equipment. It'll also give astronauts a spectacular view of Earth and space.

After years of construction, the International Space Station is about to get a room with a spectacular view.

At 4:39 a.m. Eastern Standard Time Sunday, NASA is set to launch the space shuttle Endeavour and its six-member crew on a mission to deliver the final US components – made in Europe – to the orbiting lab: Node 3, named Tranquility, and a seven-window cupola for the node, which will give crewmembers breathtaking views of Earth and space.

Read more ....

Sweat And Blood: Why Mosquitoes Pick And Choose Between Humans

Receptors are drawn to chemical in human sweat

From Times Online:

For some people, a mosquito in the room is a threat to any little patch of exposed skin, while others seem to go unscathed. Now scientists have discovered chemicals in human sweat that make certain individuals more attractive to the insects.

Those targeted most aggressively are likely to have higher concentrations of the chemicals in their perspiration, or simply sweat more, the US researchers say.

Read more ....

Briton Takes Off For Space Station As Nasa Faces Funding Crisis

Nasa astronaunt Nicholas Patrick. Photograph: Tony Kyriacou / Rex Features

From The Telegraph:

Nicholas Patrick's mission to international space station comes as Barack Obama announces cuts to US space programme.

As a schoolboy in Yorkshire watching the first moon landings on television, Nicholas Patrick could only dream of following the pioneers of Apollo into space.

Inspired by their achievements, he moved to America to achieve his childhood ambition of becoming an astronaut. On Sunday, when the shuttle Endeavour blasts off from the Kennedy Space Centre in Florida, Patrick will embark on one of the greatest adventures ever undertaken by one of the handful of Britons to reach orbit in an American spacecraft.

Read more ....

Moore’s Curse And The Great Energy Delusion

From The American:

Our transition away from fossil fuels will take decades—if it happens at all.

During the early 1970s we were told by the promoters of nuclear energy that by the year 2000 America’s coal-based electricity generation plants would be relics of the past and that all electricity would come from nuclear fission. What’s more, we were told that the first generation fission reactors would by then be on their way out, replaced by super-efficient breeder reactors that would produce more fuel than they were initially charged with.

Read more ....

3D: Coming To A Laptop Near You

The Asus G51J laptop has a bit of peripheral flicker - and that fades quickly as your eyes acclimatise - but otherwise it delivers

From The Daily Mail:

The latest hi-tech laptop delivers realistic 3D gaming without leaving you feeling all at sea (though the cost may make you feel a little queasy...)

Two minutes after opening Asus's G51J 3D laptop, I felt like I was operating a theme park ride. There was a queue of people watching 3D video of racers zooming round the Nurburgring, oohing and aahing and enquiring whether you really have to wear the funny glasses. My more primitive colleagues actually reached out to touch the cars. Next time, I will be charging.

Read more ....

Quantum Computing Leap Forward: Altering a Lone Electron Without Disturbing Its Neighbors

Jason Petta, an assistant professor of physics, has found a way to alter the property of a lone electron without disturbing the trillions of electrons in its immediate surroundings. Such a feat is an important step toward developing future types of quantum computers. (Credit: Princeton University, Office of Communications, Brian Wilson)

From Science Daily:

Science Daily (Feb. 6, 2010) — A major hurdle in the ambitious quest to design and construct a radically new kind of quantum computer has been finding a way to manipulate the single electrons that very likely will constitute the new machines' processing components or "qubits."

Read more ....

Why We Gamble: The Enticement Of Almost Winning

From Live Science:

Betting on the Super Bowl, roulette, or even online poker can be thrilling, and with the advent of online gambling, it's easier than ever before. Yet winning and losing can have unexpected effects on the brain that keep people coming back for more, scientists are finding.

Gamblers sink an increasing sum of money into their efforts to win. Over the last 20 years legalized betting has grown tremendously; it's now a $100 billion industry. More than 65 percent of Americans gamble, according to Gallup's annual Lifestyle Poll conducted last year, and up to 5 percent of those betters develop an addiction to the activity.

Read more ....

Justice Dept. to Google Books: Close, But No Cigar

From Epicenter:

Google’s plan to digitize the world’s books into a combination research library and bookstore has hit another snag, in the form of a U.S. Justice Department statement that “despite substantial progress made, issues remain” with the proposed settlement agreement of the class action lawsuit The Authors Guild Inc. et al. v. Google Inc.

The Justice Department joins key members of The Authors Guild in applauding some of the changes Google and the guild have made to their proposed agreement, submitted in September, including the elimination of Google’s right to the books for unspecified future uses, the creation of a new position to represent unknown rights holders, and a mechanism allowing competing companies to license Google’s library to offer competing products.

Read more ....