A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Monday, August 10, 2009
The Top Seven Social Networking Sites For Kids
From Times Online:
Forget Facebook. Tweet off, Twitter. We find out where today's children are really logging on.
How do you know when a social networking site isn’t cool anymore? The day that your dad joins up. A new study has found that young people are turning their backs on sites such as Facebook and Twitter. Meanwhile, the number of 35 to 54-year-olds using such sites has rocketed by 25 per cent in the last year.
So what can you do if you don’t want to be poked by your mum or added by your gran? Here’s a round up of the coolest sites and virtual worlds for children – just make sure you hide this page from your parents.
Read more ....
Swine Flu: 'Tamiflu Harm Outweighs Benefits For Children'
Their study found that Tamiflu caused vomiting in some children, which can lead to dehydration and complications Photo: REUTERS
From The Telegraph:
Children should not be given the anti-viral drug Tamiflu for swine flu because its harms outweigh any benefits, Oxford researchers have said.
They called on the Department of Health to have an urgent rethink of its current policy in the swine flu pandemic.
Their study found that Tamiflu caused vomiting in some children, which can lead to dehydration and complications.
Read more ....
An Operating System For The Cloud
From Technology Review:
Google is developing a new computing platform equal to the Internet era. Should Microsoft be worried?
From early in their company's history, Google's founders, Larry Page and Sergey Brin, wanted to develop a computer operating system and browser.
They believed it would help make personal computing less expensive, because Google would give away the software free of charge. They wanted to shrug off 20 years of accumulated software history (what the information technology industry calls the "legacy") by building an OS and browser from scratch. Finally, they hoped the combined technology would be an alternative to Microsoft Windows and Internet Explorer, providing a new platform for developers to write Web applications and unleashing the creativity of programmers for the benefit of the masses.
Read more ....
Hole in the Earth
FROM LIVE SCIENCE
A meteorite that rocked the Sahara
A meteorite that rocked the Sahara desert over 300 million years ago left behind quite a scar that's been photographed before.
New satellite images released by NASA this week provide a closer view of the Aorounga Impact Crater in north-central Chad, one of the best preserved impact structures in the world.
The crater measures 10 miles (17 kilometers) across with a peak that is surrounded by a small sand-filled trough. This feature is surrounded by an even larger circular trough. Winds at the site blow from the northeast and sand dunes formed between the ridges are actively migrating to the southwest. Measuring 10 miles (17 kilometers) across,
READE MORE....
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Machismo Cuts Men's Lives Short
FROM: LIVE SCIENCE
Why they don't go
Tough guys who buy into ideals of masculinity are much less likely to seek preventive healthcare services, such as a prostate exam, compared with other men.
The new finding, based on survey data, reveals that such manly beliefs could help to explain the lower life expectancy of men compared with women.
In the United States in 2005, life expectancy for women averaged about 80 years, while for men it was about 75 years, according to the Centers for Disease Control and Prevention.
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NOAA Lowers Hurricane Season Outlook
(Click Above Image to Enlarge)
While NOAA is lowering forecasts, the Accumulated Cyclone Energy (ACE) from FSU COAPS is also quite low. Ryan Maue’s Tropical web page at Florida State University has this graph that shows accumulated cyclone energy (ACE)
While NOAA is lowering forecasts, the Accumulated Cyclone Energy (ACE) from FSU COAPS is also quite low. Ryan Maue’s Tropical web page at Florida State University has this graph that shows accumulated cyclone energy (ACE)
From Watts Up With That?
According to its August Atlantic hurricane season outlook, NOAA now expects a near- to below-normal Atlantic hurricane season, as the calming effects of El NiƱo continue to develop. But scientists say the season’s quiet start does not guarantee quiet times ahead. The season, which began June 1, is entering its historical peak period of August through October, when most storms form.
Read more ....
1 Million MPH Stars Move Through Galaxy
From FOX News/Space:
Stars in a distant galaxy move at stunning speeds — greater than 1 million mph, astronomers have revealed.
These hyperactive stars move at about twice the speed of our sun through the Milky Way, because their host galaxy is very massive, yet strangely compact. The scene, which has theorists baffled, is 11 billion light-years away. It is the first time motions of individual stars have been measured in a galaxy so distant.
While the stars' swiftness is notable, stars in other galaxies have been observed to travel at similarly high speeds. In those situations, it was usually because they were interlopers from outside, or circling close to a black hole.
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Earth's Most Prominent Rainfall Feature Creeping Northward
The band of heavy precipitation indicates the intertropical convergence zone. The new findings are based on sediment cores from lakes and lagoons on Palau, Washington, Christmas and Galapagos islands. (Credit: Image courtesy of University of Washington)
From Science Daily:
ScienceDaily (Aug. 9, 2009) — The rain band near the equator that determines the supply of freshwater to nearly a billion people throughout the tropics and subtropics has been creeping north for more than 300 years, probably because of a warmer world, according to research published in the July issue of Nature Geoscience.
If the band continues to migrate at just less than a mile (1.4 kilometers) a year, which is the average for all the years it has been moving north, then some Pacific islands near the equator – even those that currently enjoy abundant rainfall – may be drier within decades and starved of freshwater by midcentury or sooner. The prospect of additional warming because of greenhouse gases means that situation could happen even sooner.
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Why 'Willy' Could Never Be Free
From Live Science:
In 1998, with much fanfare, a 20-year-old orca named Keiko took a one-way trip on an Air Force cargo plane from Oregon to Iceland. There, attended by dozens of biologists and trainers, and at a cost reportedly topping $20 million, the orca was gradually reintroduced to his native waters.
Keiko, of course, had starred in three "Free Willy" movies, which sparked a public campaign to free him after nineteen years in captivity.
But things didn’t quite turn out as planned.
A team of his former caretakers, led by Malene J. Simon of the Greenland Institute of Natural Resources in Nuuk, has analyzed logs of Keiko’s behavior and data from satellite tags recording his travels and dives. They point out that Keiko never managed to integrate with Icelandic orca pods and didn’t seem to do much diving or fishing. He spent two several-week-long stretches on his own at sea, but ultimately chose to return to human care.
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Freak Wave 'Hot Spots' Identified
From The BBC:
Scientists in the US have made a major advance in their understanding of so-called freak waves.
These monster waves present a major risk to ships and offshore platforms.
A computer simulation developed by oceanographers in the US could help locate where and when these "rogue" phenomena are most likely to occur.
The theoretical study shows that coastal areas with variations in water depth and strong currents are hot spots for freak waves.
The history of seafaring is littered with tales of rogue waves capable of rending ships asunder.
Read more ....
Twitter Attack Triggers Conspiracy Theories But Few Seem Plausible
From The Scientific American:
The same week that the Obama Administration lost its acting cyber security czar, cyber attacks torpedoed several of the Web's most popular social-networking sites, in particular Twitter and Facebook. Although the denial-of-service attacks (which overwhelm Web servers with phony requests) were the latest reminder of the difficulties of defending the Web against cyber threats, it appears that these crashed sites were collateral damage in the ongoing conflict between Russia and Georgia. Or were they?
Read more ....
The same week that the Obama Administration lost its acting cyber security czar, cyber attacks torpedoed several of the Web's most popular social-networking sites, in particular Twitter and Facebook. Although the denial-of-service attacks (which overwhelm Web servers with phony requests) were the latest reminder of the difficulties of defending the Web against cyber threats, it appears that these crashed sites were collateral damage in the ongoing conflict between Russia and Georgia. Or were they?
Read more ....
Hurricane Season 2009: Where Are All the Storms?
El NiƱo conditions over the Pacific Ocean have so far kept a lid on the 2009 Atlantic hurricane season, experts said in August 2009. But there's still plenty of time for a "monster" to form by season's end. Hurricane Andrew, seen above barreling toward Florida on August 24, 1992, also formed during an El NiƱo year. Andrew was the third most powerful hurricane to make U.S. landfall in recorded history. Photograph courtesy National Oceanic and Atmospheric Administration (NOAA)
From National Geographic:
Before the 2009 Atlantic hurricane season kicked off on June 1, forecasters were calling for 12 named storms, with about half developing into hurricanes.
Now, about two months into the season, zero storms have formed in the Atlantic.
That's because El NiƱo conditions over the Pacific Ocean have so far kept a lid on the 2009 hurricane season, experts say.
Still, meteorologists warn that a monster hurricane could be spawned before the season ends on November 30.
"Oases of favorable conditions" could exist in the Atlantic Basin long enough to allow a powerful storm to form, said Keith Blackwell, a meteorologist at the University of South Alabama's Coastal Weather Research Center in Mobile.
"It's very plausible that we still could get one or two intense hurricanes this year," Blackwell said. "And it only takes one to make it a bad season."
Read more ....
Virtual Computer Army Takes On The Botnets
From New Scientist:
MORE than 1 million virtual computers are set to provide insight into how networks of infected computers called botnets wreak havoc on the internet, as the Conficker worm did recently.
Ron Minnich and Don Rudish of Sandia National Laboratories in Livermore, California, crammed 250 independent linux "kernels" - the core system of a computer - onto each of 4400 networked Thunderbird machines, creating a total of over 1.1 million individual virtual computers.
While this network cannot mimic the internet's estimated 600 million computers, the duo hope to use it to study how a small number of machines can attack and bring down larger networks. They can also study, for example, why some botnets prefer to be small and others large.
Read more ....
MORE than 1 million virtual computers are set to provide insight into how networks of infected computers called botnets wreak havoc on the internet, as the Conficker worm did recently.
Ron Minnich and Don Rudish of Sandia National Laboratories in Livermore, California, crammed 250 independent linux "kernels" - the core system of a computer - onto each of 4400 networked Thunderbird machines, creating a total of over 1.1 million individual virtual computers.
While this network cannot mimic the internet's estimated 600 million computers, the duo hope to use it to study how a small number of machines can attack and bring down larger networks. They can also study, for example, why some botnets prefer to be small and others large.
Read more ....
How The Apple Tablet Could Ruin Computing
From Popular Science:
Hint: the mobile network providers are involved.
Though whispers of an Apple tablet device practically predate Australopithecus, this week they’ve reached a fever pitch. It’s been reported by several news outlets that the supposed iTablet will feature a 10-inch touchscreen, both Wi-Fi and 3G data, and a custom ARM processor. It’s already been priced at $800 and even greenlit by none other than His Majesty Steve Jobs for a September release. Not one iota of this has been officially confirmed, but the prospect of a Mac Tablet seems more within reach than ever before.
This is not a good thing. If an Apple tablet is ever actually released, we should all be very concerned for the future of what most of us take for granted today: our d
Read more ....
Breakfast Can Wait. The Day’s First Stop Is Online.
Liz Steyer after breakfast with three of her four children, ages 5 to 16. Laptops and cellphones are banned during meals. Jim Wilson/The New York Times
From The New York Times:
Karl and Dorsey Gude of East Lansing, Mich., can remember simpler mornings, not too long ago. They sat together and chatted as they ate breakfast. They read the newspaper and competed only with the television for the attention of their two teenage sons.
That was so last century. Today, Mr. Gude wakes at around 6 a.m. to check his work e-mail and his Facebook and Twitter accounts. The two boys, Cole and Erik, start each morning with text messages, video games and Facebook.
The new routine quickly became a source of conflict in the family, with Ms. Gude complaining that technology was eating into family time. But ultimately even she partially succumbed, cracking open her laptop after breakfast.
“Things that I thought were unacceptable a few years ago are now commonplace in my house,” she said, “like all four of us starting the day on four computers in four separate rooms.”
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My Comment: A social trend that has even hit my own home.
Freaky Sleep Paralysis: Being Awake In Your Nightmares
From Wired Science:
You wake up, but you can’t move a muscle. Lying in bed, you’re totally conscious, and you realize that strange things are happening. There’s a crushing weight on your chest that’s humanoid. And it’s evil.
You’ve awakened into the dream world.
This is not the conceit for a new horror movie starring a ragged middle-aged Freddie Prinze Jr., it’s a standard description of the experience of a real medical condition: sleep paralysis. It’s a strange phenomenon that seems to happen to about half the population at least once.
Read more ....
You wake up, but you can’t move a muscle. Lying in bed, you’re totally conscious, and you realize that strange things are happening. There’s a crushing weight on your chest that’s humanoid. And it’s evil.
You’ve awakened into the dream world.
This is not the conceit for a new horror movie starring a ragged middle-aged Freddie Prinze Jr., it’s a standard description of the experience of a real medical condition: sleep paralysis. It’s a strange phenomenon that seems to happen to about half the population at least once.
Read more ....
Sunday, August 9, 2009
Why Are Flu Viruses Seasonal?
From Time Magazine:
U.S. health officials are bracing for a resurgence of the new H1N1/09 flu virus this fall, when the influenza season kicks into high gear with the resurgence of cold weather. By October, the government hopes to have 120 million doses of vaccine ready to fight the new virus, which is currently spreading around the world in the first pandemic in more than 40 years. Already, H1N1 is hitting the southern hemisphere hard: Argentina has recorded more than 160 deaths from H1N1, second most after the U.S. That's because it's winter in the southern hemisphere, and flu infections tend to spike during the fall and winter months in temperate countries.
Read more ....
Mapping The Globe's Soils
DIGITIZING DIRT: A global soil map could aid many areas of scientific research, including agriculture and climate modeling. ISTOCKPHOTO/ANTHONYROSENBERG
From Scientific American:
The lack of good information on global soils is hampering efforts to improve agriculture and combat climate change.
Long left in the dust by their peers in climate research, a small group of soil scientists is spearheading an effort to apply rigorous computer analysis to the ground beneath our feet.
Their goal: to produce a digital soil map of the entire world.
It is a daunting task. In many parts of the world, such as Africa and South Asia, knowledge of soil is sketchy at best, relying on fading paper maps. And without accurate soil information, it is difficult for planners to know where crops are best grown, or for climate modelers to predict how much carbon might be released from soil into the atmosphere.
Read more ....
Labels:
climate change,
earth science,
farming
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