From Times Online:
Facebook, the world's largest online social network, has bowed to pressure and agreed to tighten up its privacy policies further.
The company will give its 250 million users more control over the personal information they share with third-party applications such as games and quizzes and will clarify what happens to data when a user deactivates an account.
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A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Tuesday, September 1, 2009
Eye Say! How The Animal Kingdom Views The World
All-round vision: Tarantulas have eight eyes - two wide ones at the front, with four small ones underneath, and two more small ones on the side of the upper head
From The Daily Mail:
To say they come in all shapes and sizes is an understatement.
Tarantulas boast an eight-pack for all-round vision. Male elephants give off scent from behind theirs' to attract mates. And the octopus relies as much on its tentacles to get around.
These fascinating images give a tantalising glimpse of the wonders nature has evolved to see - and the extra functions they bring.
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Monday, August 31, 2009
Acoustic Tweezers Can Position Tiny Objects
"Acoustic tweezers" enable flexible on-chip manipulation and patterning of cells using standing surface acoustic waves. (Credit: Tony Jun Huang, Jinjie Shi, Penn State)
From Science Daily:
ScienceDaily (Aug. 31, 2009) — Manipulating tiny objects like single cells or nanosized beads often requires relatively large, unwieldy equipment, but now a system that uses sound as a tiny tweezers can be small enough to place on a chip, according to Penn State engineers.
"Current methods for moving individual cells or tiny beads include such devices as optical tweezers, which require a lot of energy and could damage or even kill live cells," said Tony Jun Huang, assistant professor of engineering science and mechanics. "Acoustic tweezers are much smaller than optical tweezers and use 500,000 times less energy."
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Coldest, Driest, Calmest Place On Earth Found
From Live Science:
The search for the best observatory site in the world has lead to the discovery of what is thought to be the coldest, driest, calmest place on Earth — a place where no human is thought to have ever set foot.
To search for the perfect site to take pictures of the heavens, a U.S.-Australian research team combined data from satellites, ground stations and climate models in a study to assess the many factors that affect astronomy — cloud cover, temperature, sky-brightness, water vapor, wind speeds and atmospheric turbulence.
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Opera 10 To Emerge Tuesday
From CNET:
Opera Software will release version 10 of its browser Tuesday, a new version of software that has loyal fans but not as much adoption as several rivals.
The Norwegian company says Opera 10 has better performance, a Turbo mode for slow Internet connections, support for a variety of Web standards such as Web fonts, and improvements to the Opera Mail feature. The company issued two Opera 10 release candidates for the free software in the last week, and spokeswoman Falguni Bhuta announced Monday the final version will arrive September 1.
Read more ....
Opera Software will release version 10 of its browser Tuesday, a new version of software that has loyal fans but not as much adoption as several rivals.
The Norwegian company says Opera 10 has better performance, a Turbo mode for slow Internet connections, support for a variety of Web standards such as Web fonts, and improvements to the Opera Mail feature. The company issued two Opera 10 release candidates for the free software in the last week, and spokeswoman Falguni Bhuta announced Monday the final version will arrive September 1.
Read more ....
7 Equipment Breakthroughs That Shook Up Sports
From Popular Mechanics:
It's one of the most entertaining games of cat and mouse in the sports world. A competitor, or a manufacturer, comes up with a piece of gear that threatens to turn a sport upside down. Then the game's powers that be are faced with a dilemma. Ban it outright? Rewrite the rule book? Or just let it be? Just such a controversy is raging in swimming, where streamlined suits have been banned, but it's important to remember that seeking an edge through better equipment is as old as sport itself. Here are seven pieces of gear that shook up their respective sports and sent officials back to the drawing board.
Read more ....
It's one of the most entertaining games of cat and mouse in the sports world. A competitor, or a manufacturer, comes up with a piece of gear that threatens to turn a sport upside down. Then the game's powers that be are faced with a dilemma. Ban it outright? Rewrite the rule book? Or just let it be? Just such a controversy is raging in swimming, where streamlined suits have been banned, but it's important to remember that seeking an edge through better equipment is as old as sport itself. Here are seven pieces of gear that shook up their respective sports and sent officials back to the drawing board.
Read more ....
Diving Deep For A Living Fossil
Light-equipped booms on Alvin illuminate the sea floor and pillow lava formations created by eruptions on the Mid-Atlantic Ridge. The Stephen Low Company and Rutgers University
From The New York Times:
For 33 years, Peter A. Rona has pursued an ancient, elusive animal, repeatedly plunging down more than two miles to the muddy seabed of the North Atlantic to search out, and if possible, pry loose his quarry.
Like Ahab, he has failed time and again. Despite access to the world’s best equipment for deep exploration, he has always come back empty-handed, the creature eluding his grip.
The animal is no white whale. And Dr. Rona is no unhinged Captain Ahab, but rather a distinguished oceanographer at Rutgers University. And he has now succeeded in making an intellectual splash with a new research report, written with a team of a dozen colleagues.
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Four Years Later, New Orleans' Green Makeover
A house under construction in the Lower 9th Ward of New Orleans in the "Make It Right" program is designed to be extremely eco-friendly. Charlie Varley / Sipa
From Time Magazine:
After Hurricane Katrina flattened New Orleans exactly four years ago, on Aug. 29, 2005, the city emerged as an inadvertent symbol of global warming, the first American victim of climate change. Over 200,000 homes were destroyed during the Category 5 hurricane. But in the years since, the Crescent City has quietly embraced a new and unexpected role as a laboratory for green building. Sustainable development groups that range from the international nonprofit Global Green to earth-friendly celebrities like Brad Pitt descended on New Orleans, determined not just to build the city back, but to build it back green. "It's going to come back," says Matt Petersen, the president of Global Green USA. "But we want to build it better than it was before."
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US Scientists Set To Reveal The True Colour Of Dinosaurs
From Independent:
A new technique that identifies the hue of ancient birds may help a Yale team with bigger beasts.
It is a question that has baffled the greatest scientific minds – and those of the average seven-year-old: what colour were dinosaurs?
Now a dramatic breakthrough in fossil examination has sparked a race to discover an answer that may satisfy the scientific community as well as anxious crayon-wielders. A research team at Yale University believes it has established a technique that can identify the colour of fossilised feathers and fur. Preliminary results suggest that the true colours of dinosaurs may soon be revealed.
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In Vino Veritas
Photo: Insectaries are natural habitats for beneficial insects that control pests. The Benziger Family Winery’s main insectary is planted with more than 50 kinds of plants and flowers. Credit: Benziger Family Winery
From Technology Review:
Winemakers disappointed by organic methods have turned to biodynamics as the purest route to wine that's true to soil, grape, and climate.
For years the question in winemaking was how technology could make wine better. This was especially true if the wine was Californian. When California cabernet sauvignon bested the best of Bordeaux--in a legendary blind tasting, the "Judgment of Paris," convened by the English wine merchant Steven Spurrier--it was a moment of great national pride at the time of America's Bicentennial, and it was achieved in part because California winemakers had used technology in ways tradition-bound French winemakers would not. As California wine became respectable, Silicon Valley millionaires bought vineyards in Napa and Sonoma counties. California wine and tech soon enjoyed a happy marriage.
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From Technology Review:
Winemakers disappointed by organic methods have turned to biodynamics as the purest route to wine that's true to soil, grape, and climate.
For years the question in winemaking was how technology could make wine better. This was especially true if the wine was Californian. When California cabernet sauvignon bested the best of Bordeaux--in a legendary blind tasting, the "Judgment of Paris," convened by the English wine merchant Steven Spurrier--it was a moment of great national pride at the time of America's Bicentennial, and it was achieved in part because California winemakers had used technology in ways tradition-bound French winemakers would not. As California wine became respectable, Silicon Valley millionaires bought vineyards in Napa and Sonoma counties. California wine and tech soon enjoyed a happy marriage.
Read more ....
Tumors Feel The Deadly Sting Of Nanobees
Bee on a finger. Researchers have recently harnessed the toxin in bee venom to kill tumor cells. (Credit: iStockphoto/Tatiana Buzuleac)
From Science Daily:
ScienceDaily (Aug. 31, 2009) — When bees sting, they pump poison into their victims. Now the toxin in bee venom has been harnessed to kill tumor cells by researchers at Washington University School of Medicine in St. Louis. The researchers attached the major component of bee venom to nano-sized spheres that they call nanobees.
In mice, nanobees delivered the bee toxin melittin to tumors while protecting other tissues from the toxin's destructive power. The mice's tumors stopped growing or shrank. The nanobees' effectiveness against cancer in the mice is reported in advance online publication Aug. 10 in the Journal of Clinical Investigation.
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What Makes A Psychopath? Answers Remain Elusive
Psychopathic behavior can take many forms, not all of it violent. But some common themes underlie the condition, with pieces of a brain's emotional machinery missing. Psychopaths often lack empathy, guilt, conscience or the ability to show remorse. Image credit: stockxpert
From Live Science:
As exaggerated as many popular depictions of psychopaths often are, many nevertheless do pose a genuine danger to others. So what makes psychopaths the way they are?
Scientists are now working toward uncovering the roots of this disorder in the brain. Their research could lead to ways to intervene against the disorder and hopefully prevent it from manifesting.
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Banana Diseases Hit African Crops
From The BBC:
Food supplies in several African countries are under threat because two diseases are attacking bananas, food scientists have told the BBC.
Crops are being damaged from Angola through to Uganda - including many areas where bananas are a staple food.
Experts are urging farmers to use pesticides or change to a resistant variety of banana where possible.
Scientists have been meeting in Tanzania to decide how to tackle the diseases, which are spread by insects.
Read more ....
Food supplies in several African countries are under threat because two diseases are attacking bananas, food scientists have told the BBC.
Crops are being damaged from Angola through to Uganda - including many areas where bananas are a staple food.
Experts are urging farmers to use pesticides or change to a resistant variety of banana where possible.
Scientists have been meeting in Tanzania to decide how to tackle the diseases, which are spread by insects.
Read more ....
Find Out How You'll Die, In 4 Easy Online Steps
From Popular Science:
A new website lets you figure out how you might die, by sorting death data by cause of death, sex, and age. For American males ages 20-29, the most common cause of death is accidents (40.2 percent of deaths), followed by homicide (17.5 percent), and suicide (11.7 percent). Urinary tract infections? 0.3 percent.
The Death Risk Rankings site was compiled by researchers at Carnegie Mellon University, and seems to have about a zillion ways to organize the data. It's quite cumbersome to use, so I'm going to save you the effort.
Read more ....
Laser Tests Could Silence The Dentist's Drill
From New Scientist:
THE dentist's dreaded drill could become a medical relic thanks to laser tests which spot weaknesses in dental enamel in time to repair the surface before more drastic intervention is needed.
Dentists currently check for cavities with X-rays and metal probes, but these cannot detect weaknesses in the enamel while there is still a chance to repair it. David Wang, a graduate student at the University of Sydney in Australia, instead studied whether the propagation of sound waves through the enamel could provide an early warning (Optics Express, vol 17, p 15592).
Read more ....
THE dentist's dreaded drill could become a medical relic thanks to laser tests which spot weaknesses in dental enamel in time to repair the surface before more drastic intervention is needed.
Dentists currently check for cavities with X-rays and metal probes, but these cannot detect weaknesses in the enamel while there is still a chance to repair it. David Wang, a graduate student at the University of Sydney in Australia, instead studied whether the propagation of sound waves through the enamel could provide an early warning (Optics Express, vol 17, p 15592).
Read more ....
Wikipedia To Color Code Untrustworthy Text
From Wired Science:
Starting this fall, you’ll have a new reason to trust the information you find on Wikipedia: An optional feature called “WikiTrust” will color code every word of the encyclopedia based on the reliability of its author and the length of time it has persisted on the page.
More than 60 million people visit the free, open-access encyclopedia each month, searching for knowledge on 12 million pages in 260 languages. But despite its popularity, Wikipedia has long suffered criticism from those who say it’s not reliable. Because anyone with an internet connection can contribute, the site is subject to vandalism, bias and misinformation. And edits are anonymous, so there’s no easy way to separate credible information from fake content created by vandals.
Read more ....
Starting this fall, you’ll have a new reason to trust the information you find on Wikipedia: An optional feature called “WikiTrust” will color code every word of the encyclopedia based on the reliability of its author and the length of time it has persisted on the page.
More than 60 million people visit the free, open-access encyclopedia each month, searching for knowledge on 12 million pages in 260 languages. But despite its popularity, Wikipedia has long suffered criticism from those who say it’s not reliable. Because anyone with an internet connection can contribute, the site is subject to vandalism, bias and misinformation. And edits are anonymous, so there’s no easy way to separate credible information from fake content created by vandals.
Read more ....
Space shuttle reaches space station for 9-day stay
From Reuters:
*Three spacewalks planned during shuttle's visit
*Discovery astronaut Nicole Stott to join station crew
*Shuttle delivering more than 7 tons of gear for outpost
CAPE CANAVERAL, Fla., Aug 30 (Reuters) - U.S. space shuttle Discovery arrived at the International Space Station on Sunday with food, equipment and new lab gear for the orbital outpost.
After nearly two days of traveling following its launch late Friday night, Discovery reached the Space Station at 8:54 p.m. EDT (0054 GMT Monday) as it sailed 225 miles (362 km) over the Atlantic.
"The entire rendezvous and docking was smooth as silk," said NASA mission commentator Rob Navias.
Read more ....
Energy Saving Light Bulbs Offer Dim Future
From The Telegraph:
Energy saving light bulbs are not as bright as their traditional counterparts and claims about the amount of light they produce are "exaggerated", the European Union has admitted.
Soon they will be the only kind of light bulb allowed, but now officials in Brussels have admitted that energy-saving bulbs are not as bright as the old-fashioned kind they are replacing.
From tomorrow a Europe-wide ban on traditional incandescent bulbs will begin to be rolled out, with a ban on 100W bulbs and old-style frosted or pearled bulbs.
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Three Months From a Climate Summit, Agreement Far Off
Ice sculptures, made from glacial melt water, placed by Greenpeace at the Temple of Earth in Beijing, mark the start of the 100-day countdown to the United Nations Copenhagen Climate Summit and the launch of the Tck Tck Tck campaign. LU GUANG / GREENPEACE INTERNATIONAL / EPA
From Time Magazine:
If you happened on Friday morning to walk into the Temple of Earth in Beijing — the nearly 500-year-old monument where Chinese emperors once prayed for good harvests — you would have noticed a steady drip. The environmental group Greenpeace placed ice sculptures of 100 children — made of the glacial meltwater that feeds China's great rivers — inside the temple, to symbolize the risk that climate change and disappearing ice poses to the more than 1 billion people in Asia threatened by water shortages.
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iPhones For The Blind
From Popular Science:
Quick, get out your iPhone. Unlock it and slide over to that game you've been playing when your boss isn't looking. Now mute it, put the phone to sleep, close your eyes, and try to do that again. Can you do it? Didn't think so.
There's not a simple way to use touchscreens when you can't see what you're doing, which means 10 million blind and low-vision Americans can't use this ubiquitous technology. But what if you could feel it? What if the "slide to unlock" key was an actual slide? Even better, what if you could have a Braille iPhone?
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