Gamers Are More Aggressive To Strangers

This means war (Image: ColorBlind Images/Getty)

From New Scientist:

Victorious gamers enjoy a surge of testosterone – but only if their vanquished foe is a stranger. When male gamers beat friends in a shoot-em-up video game, levels of the potent sex hormone plummeted.

This suggests that multiplayer video games tap into the same mechanisms as warfare, where testosterone's effect on aggression is advantageous.

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Are Recessions Good For Our Health?

Opportunity in Crisis? Although the Great Depression made have had a severe impact on the American economy, the crisis was actually good for U.S. health, according to a new study. The findings offer a silver lining for today's financial crisis. StockPhoto

From Discovery News:

Sept. 28, 2009 -- The name seems to say it all. The Great Depression was bad all around, wasn't it? Maybe not.

New findings show that the Great Depression was actually good for U.S. health. Annual death rates declined during years of downturn and increased in years of expansion.

The findings could offer a silver lining to today's financial crisis.

The results reinforce earlier research showing recessions reduce mortality, but researchers didn't know whether the effect would hold through a full blown economic meltdown like the Great Depression.

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Popular Kids Grow Into Healthier Adults

A study over 50 years has revealed that popular school children are less likely to suffer conditions such as heart disease and diabetes than their unpopular counterparts. Credit: iStockphoto

From Cosmos:

PARIS: Children who are the most popular and powerful at school also enjoy better health in adult life compared to counterparts at the bottom end of the pecking order, say Swedish scientists.

The long-term study covers 14,000 children born in 1953, who were questioned in 1966 when they were 12 or 13 years old and whose health was tracked up to 2003.

The children's place in the social hierarchy was determined by asking them who they most preferred to work with at school.

To assess their health in later life, the study delved into a national databank for hospital admissions.

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Giant Fish 'Verges On Extinction'

From The BBC:

One of the world's largest freshwater fish is on the verge of going extinct.

A three-year quest to find the giant Chinese paddlefish in the Yangtze river failed to sight or catch a single individual.

That means that the fish, which can grow up to 7m long, has not been seen alive for at least six years.

There remains a chance that some escaped the survey and survive, say experts, but without action, the future of the species is bleak.

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Time Lens Speeds Optical Data

Photo: Time lens: This silicon chip, called a time lens, is patterned with waveguides that split optical signals and combine them with laser light to speed data rates. Credit: Alexander Gaeta

From Technology Review:

An energy-efficient silicon device compresses light to make ultrafast signals.

Researchers at Cornell University have developed a simple silicon device for speeding up optical data. The device incorporates a silicon chip called a "time lens," lengths of optical fiber, and a laser. It splits up a data stream encoded at 10 gigabits per second, puts it back together, and outputs the same data at 270 gigabits per second. Speeding up optical data transmission usually requires a lot of energy and bulky, expensive optics. The new system is energy efficient and is integrated on a compact silicon chip. It could be used to move vast quantities of data at fast speeds over the Internet or on optical chips inside computers.

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By 2040 You Will Be Able To Upload Your Brain...

Standing up for GM: Kurzweil believes that opposition to advances such as genetic modification harm humankind. GETTY IMAGES

From The Independent:

...or at least that's what Ray Kurzweil thinks. He has spent his life inventing machines that help people, from the blind to dyslexics. Now, he believes we're on the brink of a new age – the 'singularity' – when mind-boggling technology will allow us to email each other toast, run as fast as Usain Bolt (for 15 minutes) – and even live forever. Is there sense to his science – or is the man who reasons that one day he'll bring his dad back from the grave just a mad professor peddling a nightmare vision of the future?

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Global Increase In Atmospheric Methane Likely Caused By Unusual Arctic Warmth, Tropical Wetness

View of wetlands and tidal streams in the Ashe Island area. (Credit: NOAA)

From Science Daily:

ScienceDaily (Sep. 28, 2009) — Unusually high temperatures in the Arctic and heavy rains in the tropics likely drove a global increase in atmospheric methane in 2007 and 2008 after a decade of near-zero growth, according to a new study. Methane is the second most abundant greenhouse gas after carbon dioxide, albeit a distant second.

NOAA scientists and their colleagues analyzed measurements from 1983 to 2008 from air samples collected weekly at 46 surface locations around the world. Their findings will appear in the September 28 print edition of the American Geophysical Union’s Geophysical Research Letters and are available online now.

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Plumbing Of A Supervolcano Revealed

Geologist points to the edge of a boulder of reddish volcanic rock from the fossilized supervolcano in Sesia Valley, Italy. The volcanic rock is encased by a light-gray tuff, a relationship characteristic of deposits produced during caldera-forming, explosive eruptions. Credit: Silvano Sinigoi, Universita di Trieste

From Live Science:

The fossilized remains of a supervolcano that erupted some 280 million years ago in the Italian Alps are giving geologists a first-time glimpse at the deep "plumbing system" that brings molten rock from far underground to the Earth's surface.

James E. Quick of Southern Methodist University in Texas and his team discovered the "fossil," or extinct, supervolcano in the Alps' Sesia Valley two years ago, but they are just now reporting the results after careful study.

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Obama Appoints Scholar As New Copyright Czar

From The Threat Level:

The “copyleft” and the “copyright” are both applauding the presidential appointment Friday of Victoria A. Espinel to become the nation’s first copyright czar.

Congress created the new czar position last year as part of intellectual property reform legislation.

Espinel, who requires Senate confirmation, has a past in teaching and government. Most recently, she was a visiting scholar at the George Mason University School of Law, where she taught intellectual property and international trade. The White House said she was an intellectual property adviser to the staff of the Senate Judiciary Committee, Senate Finance Committee, House Judiciary Committee and House Ways and Means Committee. Espinel, in 2005, served as the nation’s top trade negotiator for intellectual property at the Office of the U.S. Trade Representative.

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Googlle: Google Releases Misspelt Logo To Mark 11th Anniversary

The google logo that celebrates the search engine's eleventh birthday

From The Telegraph:

Google has released a special misspelt version of its logo – apparently to mark 11 years since the company was founded.

The search giant's name appeared with an extra letter "l" on its home page on Sunday, a change that did not escape the notice of the internet.

Within hours of the new logo going live, "why is google spelt wrong" and "why does google have two ls" were two of the most popular search phrases on the web.

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Yahoo's New Web Portal Goes Live

From BBC:

Internet giant Yahoo has relaunched its web portal, supported by a $100m global advertising campaign.

The company hopes the website refresh will boost both traffic and revenues.

Yahoo will also open its home page to rivals, allowing users to integrate third-party web services like Facebook or Hotmail into its portal.

Yahoo has been struggling to turn its position as the world's most popular website into profits. The portal is the first move of new boss Carol Bartz.

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Supertyphoons To Strike Japan DueTo Global Warming

Supertyphoon Sepat bears down on the Philippines in the Pacific Ocean on August 15, 2007. Increasingly powerful storms will devastate countries in the western Pacific Ocean, including Japan, as rising temperatures add fuel to storms, scientists said in September 2009. Photograph by NOAA/AP

From National Geographic:

Increasingly powerful "supertyphoons" will strike Japan if global warming continues to affect weather patterns in the western Pacific Ocean, scientists say.

Supercomputer simulations show there will be more typhoons with winds of 179 miles (288 kilometers) per hour—considered an F3 on the five-level Fujita Scale—by 2074.

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Chemicals In Breast Milk Linked To Testicular Cancer

Photo: Pollutant chemicals found in breast milk have been linked to testicular cancer Photo: GETTY

From The Telegraph:

Pollutant chemicals found in mothers' breast milk have been linked to an increased rate of testicular cancer.

A study in Denmark suggests hormone-disrupting environmental chemicals may explain why so many men in the country develop the disease.

Danish men are up to four times more likely to have testicular cancer as men in neighbouring Finland.

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A Simpler, Gentler Robotic Grip

Image: Soft touch: This four-fingered robotic hand contains sensors that help it pick up a variety of objects. Credit: Leif Jentoft

From Technology Review:

A new artificial hand shows promise for home robots and prosthetics.

Industrial robots have been helping in the factories for a while, but most robots need a complex hand and powerful software to grasp ordinary objects without damaging them.

Researchers from Harvard and Yale Universities have developed a simple, soft robotic hand that can grab a range of objects delicately, and which automatically adjusts its fingers to get a good grip. The new hand could also potentially be useful as a prosthetic arm.

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Hot Space Shuttle Images

Photo: Hot body: These thermal images were taken of space shuttle Discovery on September 11. Temperature data was used to make the color images (middle and bottom), blue being the lowest temperatures and red the highest. Credit: NASA/HYTHIRM team

From Technology Review:

NASA researchers capture thermal images of the shuttle's reentry to design better heat shields.

Researchers at NASA are using a novel thermal-imaging system on board a Navy aircraft to capture images of heat patterns that light up the surface of the space shuttle as it returns through the Earth's atmosphere. The researchers have thus far imaged three shuttle missions and are processing the data to create 3-D surface-temperature maps. The data will enable engineers to design systems to protect future spacecraft from the searing heat--up to 5,500 degrees Celsius--seen during reentry.

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Seti: The Hunt For ET

Scientists have been searching for aliens for 50 years. Rex

From The Independent:

Scientists have been searching for aliens for 50 years, scanning the skies with an ever-more sophisticated array of radio telescopes and computers. Known as Seti, the search marks its half-century this month. Jennifer Armstrong and Andrew Johnson examine its close – and not so close – encounters.

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Alzheimer's Linked To Lack Of Zzzzs

From Science News:

Losing sleep could lead to losing brain cells, a new study suggests.

Levels of a protein that forms the hallmark plaques of Alzheimer’s disease increase in the brains of mice and in the spinal fluid of people during wakefulness and fall during sleep, researchers report online September 24 in Science. Mice that didn’t get enough sleep for three weeks also had more plaques in their brains than well-rested mice, the team found.

Scientists already knew that having Alzheimer’s disease was associated with poor sleep, but they had thought that Alzheimer’s disease caused the sleep disruption.

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Discovery Brings New Type Of Fast Computers Closer To Reality

Alex High and Aaron Hammack adjust the optics in their UCSD lab. (Credit: Image courtesy of University of California - San Diego)

From Science Daily:

ScienceDaily (Sep. 28, 2009) — Physicists at UC San Diego have successfully created speedy integrated circuits with particles called “excitons” that operate at commercially cold temperatures, bringing the possibility of a new type of extremely fast computer based on excitons closer to reality.

Their discovery, detailed this week in the advance online issue of the journal Nature Photonics, follows the team’s demonstration last summer of an integrated circuit—an assembly of transistors that is the building block for all electronic devices—capable of working at 1.5 degrees Kelvin above absolute zero. That temperature, equivalent to minus 457 degrees Fahrenheit, is not only less than the average temperature of deep space, but achievable only in special research laboratories.

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Evidence For Stone Age Multitasking

A researcher heats experimental adhesive. Credit: Lyn Wadley

From Live Science:

Modern parents, teenagers, and executives are all masters of multitasking, but people who lived 70,000 years ago may have shared that talent. Stone blades found in Sibudu Cave, near South Africa’s Indian Ocean coast, bear traces of compound adhesives that once joined them to wooden hafts to make spears or arrows.

Our distant ancestors discovered that mixtures of plant gum and red ocher or fat, heated carefully over a fire, made the superglue of their day, say Lyn Wadley and two colleagues at the University of the Witwatersrand in Johannesburg. So how is that evidence of multitasking?

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US Life Expectancy Lags Due To Cigarettes

From Future Pundit:

In political debates over health care the fact that the United States lags many other industrialized countries in average life expectancy is sometimes blamed on how health care is funded in the US. But John Tierney of the New York Times reports that once the lifestyles of Americans are adjusted for America's health care system comes out looking pretty good in terms of its effects on longevity.

But a prominent researcher, Samuel H. Preston, has taken a closer look at the growing body of international data, and he finds no evidence that America’s health care system is to blame for the longevity gap between it and other industrialized countries. In fact, he concludes, the American system in many ways provides superior treatment even when uninsured Americans are included in the analysis.

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