Saturday, August 22, 2009

Mysterious Origins: 8 Phenomena That Defy Explanation

Photo: A UNIVERSE OF MYSTERIES: Why aren't there suns, planets and galaxies made of antimatter? NASA

From Scientific American:

The unknown origins behind language, handedness, flu seasons, superconductivity, antimatter, proton spin, cosmic rays and sex.

Our September 2009 special issue on origins contains articles on 57 innovations and insights that shape our world today. They include some big ones, like the origin of life, the universe and the mind; sobering stories, like mad cow disease and HIV; and whimsical tales, like paper clips and cupcakes. This past week, we've posted a dozen additional online-only origins: the open-plan office space, fruit ripening, malaria, the computer mouse, atmospheric oxygen, hatred, wine, dogs, rubber boots, zero and, of course, Scientific American.

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Engineers Develop Flexible, Inorganic LED Display

Flexible Inorganic LED Pacific Northwest National Lab via Ars Technica

From Popular Science:

The promise of OLED technology is that, unlike its inorganic counterpart, it can be used to create flexible and nearly transparent ultra-thin screens, opening up myriad possibilities for what we can do with displays and lighting. But just as market-ready OLED technology suffered a setback as Sony delayed its latest OLED television this week (only the world’s second commercial OLED TV, after Sony's XEL-1 set), engineers have devised a way to make cheaper, more efficient inorganic LED technology bend to their whims. Literally.

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The Crew Of STS-128

STS128-S-002 (30 Jan. 2009) --- Attired in training versions of their shuttle launch and entry suits, these seven astronauts take a break from training to pose for the STS-128 crew portrait. Seated are NASA astronauts Rick Sturckow (right), commander; and Kevin Ford, pilot. From the left (standing) are astronauts Jose Hernandez, John "Danny" Olivas, Nicole Stott, European Space Agency's Christer Fuglesang and Patrick Forrester, all mission specialists. Stott is scheduled to join Expedition 20 as flight engineer after launching to the International Space Station on STS-128.

From Yahoo News/Space:

A former off-road racer, a Swedish physicist and three tweeting astronauts form just part of the eclectic crew poised to blast off Tuesday aboard NASA's space shuttle Discovery.

Discovery's six-man, one-woman crew is slated to launch on a 13-day mission to the International Space Station, where they astronauts will deliver vital supplies and experiments, as well as a new crewmember for the orbiting laboratory.

"This is a great crew," said Discovery commander Rick Sturckow in a NASA interview. "I think from the very beginning we got off to a good start and we've maintained a good pace throughout the training ... and still manage to have fun together doing it, so I've really enjoyed training with this crew."

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Space Shuttle Discovery On Track For Tuesday Launch

Space shuttle Discovery back on Earth (AFP: Pierre Ducharme)

From Yahoo News/Space:

NASA's space shuttle Discovery is on track for a planned Tuesday launch toward the International Space Station, mission managers said Saturday.

The shuttle and its seven-astronaut crew are nearly ready for their predawn launch Tuesday at 1:36 a.m. EDT (0536 GMT) from NASA's Kennedy Space Center in Florida, said NASA test director Charlie Blackwell-Thompson.

"All of our vehicle systems are in good shape. Our countdown work is progressing well," Blackwell-Thompson said today in a morning status briefing. "Discovery and her launch team are ready to go."

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Universal Vaccine Could Put An End To All Flu



From New Scientist:

IT IS not a nice way to die. As the virus spreads through your lungs, your immune system goes into overdrive. Your lungs become leaky and fill with fluid. Your lips and nails, then your skin, turn blue as you struggle to get enough oxygen. Basically, you drown.

Flu can kill in other ways, too, from rendering you vulnerable to bacterial infections to triggering heart attacks. Of course, most flu strains, including (so far) the 2009 pandemic virus, cause only mild symptoms in the vast majority of people. But with 10 to 20 per cent of people worldwide getting flu every year, that still adds up to a huge burden of illness - and even in a good year some half a million die.

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Evolution Of The Human Appendix: A Biological 'Remnant' No More

Normal location of the appendix relative to other organs of the digestive system (frontal view). (Credit: Wikimedia Commons)

From Science Daily:

Science Daily (Aug. 21, 2009) — The lowly appendix, long-regarded as a useless evolutionary artifact, won newfound respect two years ago when researchers at Duke University Medical Center proposed that it actually serves a critical function. The appendix, they said, is a safe haven where good bacteria could hang out until they were needed to repopulate the gut after a nasty case of diarrhea, for example.

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What You Should Know About Arthritis

A graphic shows what's inside your joints, and what can go wrong.

From Live Science:

This Week's Question: I'm pretty sure I have arthritis in my knee. Is there any danger this will spread?

First, anyone who thinks they may have arthritis should see a doctor. Self-diagnosis is hazardous to your health. Now for some information about arthritis all geezers should know.

Arthritis, which comes in different forms, is inflammation of the joints. Osteoarthritis, rheumatoid arthritis and gout are the three most common forms of arthritis among seniors. Osteoarthritis is the most prevalent. None is contagious.

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You Are What You Listen To, Says New Study Of Music Lovers

Playlists can give an insight into your personality Photo: GETTY IMAGES

From The Telegraph:


Think twice before proudly showing off your iPod playlist. Your choice of music may mark you out as boring, dim and unattractive, according to new research from the University of Cambridge.

The study found that we make assumptions about someone’s personality, values, social class and ethnicity based on their musical preferences.

Classical buffs are seen as ugly and boring, while rock lovers are regarded as emotionally unstable and pop fans are considered to be rather dim.

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Let Private Sector Help NASA


From Autopia/Wired News:

After leading the way in the human exploration of space for nearly 50 years, the future of U.S. manned space flight is in question. The space shuttle makes its last flight next year. After that, NASA must rely on the Russians to put astronauts in space.

Unless the country looks to the private sector.

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Yahoo Wins Appeal Of Music-Streaming Case

From CNET:

A three-judge panel ruled Friday that Yahoo will not have to pay up every time it plays a song on its Internet radio service, affirming an earlier verdict.

In what is being seen as a defeat for the music industry, Yahoo Music was not deemed "interactive" enough to require the company to negotiate with record companies for the rights to play songs over the Internet. Instead, according to Reuters, it merely has to pay licensing fees to digital music rights organization SoundExchange.

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France Worried By Hornet Invasion

The Asian predatory wasp could threaten bee-keepers' livelihoods

From The BBC:

France faces an invasion of Chinese hornets that could hasten the decline of the honeybee population.

The wasps, known by their scientific name Vespa velutina, could also threaten bee-keepers' livelihoods, researchers say.

They have spread rapidly in south-western France - a region popular with tourists - and could reach other European countries soon.

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Why We Walk in Circles

Into the woods. People walking through a forest were more likely to walk in circles on cloudy days (blue paths) than they were on days when the sun was visible (yellow paths). Credit: (Map) Adapted from Google Earth by J. L. Souman et al., Current Biology 19 (20 August 2009); (inset: Jan Souman)

From Science Now:

Adventure stories and horror movies ramp up the tension when hapless characters walk in circles. The Blair Witch Project, for example, wouldn't have been half as scary if those students had managed to walk in a straight line out of the forest. But is this navigation glitch real or just a handy plot device? A new study finds that people really do tend to walk in circles when they lack landmarks to guide them.

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End Of Civil War Opens Up Angolan 'Jurassic Park'

Fossils are seen in the Bentiaba desert, southern province of Namibe in Angola. Much of Angola's fossil richness results from dramatic continental shifts tens of millions of years ago, which saw the land transform from desert to tropics. (AFP/HO/File/Anne Schulp)

From Yahoo News.AFP:

LUANDA (AFP) – Angola is best known for oil and diamonds, but dinosaur hunters say the country holds a "museum in the ground" of rare fossils -- some actually jutting from the earth -- waiting to be discovered.

"Angola is the final frontier for palaeontology," explained Louis Jacobs, of Southern Methodist University in Dallas, Texas, part of the PaleoAngola project which is hunting for dinosaur fossils.

"Due to the war, there's been little research carried out so far, but now we're getting in finally and there's so much to find.

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Building Safer Airplanes Out of Teeth

Smile for Airplane Safety!: Curtiss P-40 Warhawk USAF Museum

From Popular Science:

In a recent study, molars beat materials science.

Airplane design could be improved with a little inspiration from mammalian chompers. Or so said aerospace engineer Herzl Chai of Tel Aviv University in a press release Wednesday.

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Friday, August 21, 2009

The Origin of Zero

ZERO IN: The number zero developed in fits and starts over thousands of years.
©iStockphoto/dbuffoon

From Scientific American:

Much ado about nothing: First a placeholder and then a full-fledged number, zero had many inventors.

The number zero as we know it arrived in the West circa 1200, most famously delivered by Italian mathematician Fibonacci (aka Leonardo of Pisa), who brought it, along with the rest of the Arabic numerals, back from his travels to north Africa. But the history of zero, both as a concept and a number, stretches far deeper into history—so deep, in fact, that its provenance is difficult to nail down.

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A Look Into The Hellish Cradles Of Suns And Solar Systems

The dense star cluster RCW 38 glistens about 5500 light years away in the direction of the constellation Vela (the Sails). RCW 38 is an "embedded" cluster, in that the nascent cloud of dust and gas still envelops its stars. (Credit: Image courtesy of ESO)

From Science Daily:

ScienceDaily (Aug. 20, 2009) — New images released today by ESO delve into the heart of a cosmic cloud, called RCW 38, crowded with budding stars and planetary systems. There, young stars bombard fledgling suns and planets with powerful winds and blazing light, helped in their task by short-lived, massive stars that explode as supernovae. In some cases, this onslaught cooks away the matter that may eventually form new solar systems. Scientists think that our own Solar System emerged from such an environment.

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Human Lifespans Nearly Constant for 2,000 Years


From Live Science:

The Centers for Disease Control and Prevention, often the harbinger of bad news about e. coli outbreaks and swine flu, recently had some good news: The life expectancy of Americans is higher than ever, at almost 78.

Discussions about life expectancy often involve how it has improved over time. According to the National Center for Health Statistics, life expectancy for men in 1907 was 45.6 years; by 1957 it rose to 66.4; in 2007 it reached 75.5. Unlike the most recent increase in life expectancy (which was attributable largely to a decline in half of the leading causes of death including heart disease, homicide, and influenza), the increase in life expectancy between 1907 and 2007 was largely due to a decreasing infant mortality rate, which was 9.99 percent in 1907; 2.63 percent in 1957; and 0.68 percent in 2007.

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Artificial Life Will Be Created 'Within Months' As Genome Experts Claim Vital Breakthrough

Breakthrough: New DNA was protected by a process called methylation (step 5)

From The Daily Mail:


Scientists are only months away from creating artificial life, it was claimed today.

Dr Craig Venter – one of the world’s most famous and controversial biologists – said his U.S. researchers have overcome one of the last big hurdles to making a synthetic organism.

The first artificial lifeform is likely to be a simple man-made bacterium that proves that the technology can work.

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Vast Oceans Lay Beneath Surface Of The Earth


From The Telegraph:

Vast oceans may lay beneath the Earth's surface, new research suggests.

Scientists believe areas of enhanced electrical conductivity in the mantle - the thick region between the Earth's crust and its core - betray the presence of water.

Water divining researchers produced a global three-dimensional map of the mantle showing the areas through which electricity flowed most freely.

Conductivity hot spots were found to coincide with subduction zones, sites where the tectonic plates that divide up the Earth's surface are being forced downwards.

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Scientists Develop Intelligent Coffee Mug


From Spiegel Online:

Materials to keep drinks cold or hot for longer have been around for quite a while. Now a pair of German scientists has come up with a high-tech mug they claim keeps coffee at the perfect temperature.

The idea came to the researchers at the Christmas market in the Bavarian town of Rosenhiem. "We got upset because the mulled wine" -- Glühwein, in German -- "was always either too hot or too cold," say Klaus Sedlbauer, the head of the Fraunhofer Institute for Building Physics (IBP), and his colleague Herbert Sinnesbichler. "We had to find a solution."

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