A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Thursday, September 4, 2008
What DID the Romans ever do for us? They gave us AIDS
From The Daily Mail:
What, as the old Monty Python question goes, have the Romans ever done for us?
Well, apart from the usual answers of roads, sanitation and a fondness for wine, it appears they have also made us more vulnerable to HIV.
According to genetic research published on Wednesday, when Julius Caesar made his first exploratory visit to our shores in 55BC he triggered a chain of events which may have lowered our resistance to the virus which leads to Aids.
The theory is that as the Roman Empire spread so did an unknown illness that killed those carrying a gene that would one day give their descendants resistance to the virus.
As a result, today's inhabitants of nations once conquered by the Romans tend to lack the gene and so are more susceptible to HIV.
For instance, only 4 per cent of Greeks carry the gene, compared with more than 15 per cent of people in parts of northern Europe untouched by the Romans.
Read more ....
What, as the old Monty Python question goes, have the Romans ever done for us?
Well, apart from the usual answers of roads, sanitation and a fondness for wine, it appears they have also made us more vulnerable to HIV.
According to genetic research published on Wednesday, when Julius Caesar made his first exploratory visit to our shores in 55BC he triggered a chain of events which may have lowered our resistance to the virus which leads to Aids.
The theory is that as the Roman Empire spread so did an unknown illness that killed those carrying a gene that would one day give their descendants resistance to the virus.
As a result, today's inhabitants of nations once conquered by the Romans tend to lack the gene and so are more susceptible to HIV.
For instance, only 4 per cent of Greeks carry the gene, compared with more than 15 per cent of people in parts of northern Europe untouched by the Romans.
Read more ....
Wednesday, September 3, 2008
The Science Of Tracking Gustav
From CNN:
(CNN) -- Hurricanes can be some of the deadliest forces of nature, but they also follow a set of patterns and rules when they form.
Some parts of the storms can be more treacherous than others.
Geography also can play a huge role in how big and strong they will grow before they strike the United States.
CNN meteorologist Reynolds Wolf talked with CNN.com about Hurricane Gustav's path and potential for damage.
Q: There's been a lot of talk about the storm hitting to the west of New Orleans being worse for the city. Why is that?
The most dangerous part of the storm, when it comes to a hurricane, is always going to be the eastern side. One of the reasons why is simply because a lot of these tropical storm systems, they carry the greatest amount of wind, the greatest amount of storm surge, the heaviest rainfall ... on the right side of the storm simply because of the counterclockwise rotation.
Read more ....
New Climate Study Indicates Hottest Decade in 1,300 Years
The new study uses a variety of evidence including ice cores, the result of painstaking data collection by NOAA and other research organizations. These data points provide a far more accurate picture than previous efforts derived from tree ring data. (Source: NOAA)
From DailyTech:
More research supporting a warming climate continues to pile on
Despite record lows in solar magnetic activity, thought to influence the climate, trends continue to point to a clear rise in temperatures worldwide. This is reflected by increased melting and other significant changes.
Now one of the more cohesive studies to date, published by Penn State's Earth System Science Center, has offered up a factual analysis of exactly how much warming is occurring. Rather than focus on creative modeling often considered a refuge of global warming skeptics and alarmists alike, Penn state instead analyzed historic and contemporary data.
It found that the last 10 years for the Northern Hemisphere were the hottest in 1,300 years. They also asserted that if more controversial tree ring data were used, this range could be extended to 1,700 years, but the tree ring data is for the first time unnecessary, eliminating much controversy.
Read more ....
Massive Arctic Ice Shelf Breaks Away
From Reuters:
OTTAWA (Reuters) - A huge 19 square mile (55 square km) ice shelf in Canada's northern Arctic broke away last month and the remaining shelves have shrunk at a "massive and disturbing" rate, the latest sign of accelerating climate change in the remote region, scientists said on Tuesday.
They said the Markham Ice Shelf, one of just five remaining ice shelves in the Canadian Arctic, split away from Ellesmere Island in early August. They also said two large chunks totaling 47 square miles had broken off the nearby Serson Ice Shelf, reducing it in size by 60 percent.
"The changes ... were massive and disturbing," said Warwick Vincent, director of the Centre for Northern Studies at Laval University in Quebec.
Temperatures in large parts of the Arctic have risen far faster than the global average in recent decades, a development that experts say is linked to global warming.
Read more ....
PHOTO IN THE NEWS: Arctic Ice Shelves Crumbling Rapidly -- National Geographic
Large Arctic ice shelf breaks away, now adrift in Arctic Ocean -- Globe And Mail
Major ice-shelf loss for Canada -- BBC News
Arctic ice shelf splits; ice loss 10x expected this summer -- Arstechnica
Huge sheet of Canadian ice shelf breaks off, scientists say -- Earthtimes
Ellesmere Island loses huge ice shelf -- Canada.com
OTTAWA (Reuters) - A huge 19 square mile (55 square km) ice shelf in Canada's northern Arctic broke away last month and the remaining shelves have shrunk at a "massive and disturbing" rate, the latest sign of accelerating climate change in the remote region, scientists said on Tuesday.
They said the Markham Ice Shelf, one of just five remaining ice shelves in the Canadian Arctic, split away from Ellesmere Island in early August. They also said two large chunks totaling 47 square miles had broken off the nearby Serson Ice Shelf, reducing it in size by 60 percent.
"The changes ... were massive and disturbing," said Warwick Vincent, director of the Centre for Northern Studies at Laval University in Quebec.
Temperatures in large parts of the Arctic have risen far faster than the global average in recent decades, a development that experts say is linked to global warming.
Read more ....
More News On This Ice Shelf Breakaway
PHOTO IN THE NEWS: Arctic Ice Shelves Crumbling Rapidly -- National Geographic
Large Arctic ice shelf breaks away, now adrift in Arctic Ocean -- Globe And Mail
Major ice-shelf loss for Canada -- BBC News
Arctic ice shelf splits; ice loss 10x expected this summer -- Arstechnica
Huge sheet of Canadian ice shelf breaks off, scientists say -- Earthtimes
Ellesmere Island loses huge ice shelf -- Canada.com
Closest Look Yet at Milky Way's Black Hole
Illustration shows accretion disk of matter (orange cloud) and jets of speeding particles (white swirls) that scientists think surround a black hole at the center of the Milky Way. Inset shows a computer simulation of matter swirling around the black hole, with red indicating brighter emission and bluer coloring representing dimmer light. Orange circle denotes comparative size of Sagittarius A* measured by new observations, which is smaller than previous measurements. Credit: MIT/NASA/CXC/Johns Hopkins/U. Illinois
From Space.com
If it looks like a black hole, and acts like a black hole, it's probably a black hole.
For a while now scientists have thought a dense, massive object lurking at the center of our galaxy is likely a giant black hole, but they haven't been able to prove it. New observations offering the closest view yet of the heart of the Milky Way present strong evidence for the black hole theory, and even hope of finally settling the question soon.
By linking a series of radio telescopes around the world, astronomers created a virtual telescope with the resolving power of a single dish the size of the distance between the various sites (about 2,800 miles, or 4,500 kilometers). This instrument grabbed an intimate image that probed nearly to the Milky Way's black hole's event horizon — the point beyond which nothing, including light, could ever escape.
Read more ....
Will European Physicists Destroy The World?
A 1-in-1,000 Chance of Götterdämmerung -- Reason Online
Will the world come to an end on September 10? That fear is motivating two lawsuits—one American, another European—that aim to stop the physicists at the European Center for Nuclear Research (CERN) from switching on the Large Hadron Collider (LHC) on that day. The LHC is a $10 billion 17-mile long particle accelerator lying in a circular tunnel beneath the border of France and Switzerland. Its massive superconducting magnets cooled with liquid helium accelerate two beams of protons and lead nuclei to nearly the speed of light. These particle beams will eventually be crashed into each other to produce temperatures and particles not seen since microseconds after the Big Bang 13.7 billion years ago.
One of the chief goals of the LHC experiments is to find the elusive Higgs boson, the only fundamental particle predicted by the Standard Model of particle physics that has not been directly observed. The Higgs boson plays a key role in explaining the origins of mass in other elementary particles. Exciting, if esoteric research, to be sure, but why oppose it?
Read more ....
Tuesday, September 2, 2008
New Study Shows Solar System Is Unique
From The Future Of Things:
Research conducted by a team of North American scientist shows our solar system is special, contrary to the accepted theory that it is an average planetary system. Using computer simulations to follow the development of planets, it was shown that very specific conditions are needed for a proto-stellar disk to evolve into a solar system-like planetary system. The simulations show that in most cases either no planets are created, or planets are formed and then migrate towards the disk center and acquire highly elliptical orbits.
Read more ....
Another Article On Sunspots, But This One Provides A Good Roundup
Solar Cycle 24 Is Still Late, Perhaps Signalling
Cool Weather Ahead -- Fabius Maximus
Cool Weather Ahead -- Fabius Maximus
Summary: Sunspot counts and other indicators of solar activity continue at low levels. The last month with zero sunspots was June 1913. August had zero spots, or one (there is some debate about this). How solar cycle 24 develops deserves to be on the list of things to watch for anyone interested in geopolitics. A “small” solar cycle — a period in which the global climate cools — would have substantial effects. Esp. with global grain inventories at such low levels. As always, links to more information are at the end of this post.
Read more ....
Bell Labs Kills Fundamental Physics Research
After six Nobel Prizes, the invention of the transistor, laser and countless contributions to computer science and technology, it is the end of the road for Bell Labs' fundamental physics research lab.
Alcatel-Lucent, the parent company of Bell Labs, is pulling out of basic science, material physics and semiconductor research and will instead be focusing on more immediately marketable areas such as networking, high-speed electronics, wireless, nanotechnology and software.
The idea is to align the research work in the Lab closer to areas that the parent company is focusing on, says Peter Benedict, spokesperson for Bell Labs and Alcatel-Lucent Ventures.
"In the new innovation model, research needs to keep addressing the need of the mother company," he says.
That view is shortsighted and may drastically curtail the Labs' ability to come up with truly innovative discoveries, respond critics.
Read more ....
More Mysteries Answered From King Tut's Tomb
Foetuses Found In King Tutankhamun's Tomb 'Were His Twin Daughters', Says Expert -- Daily Mail
Two foetuses found in the tomb of Tutankhamun are very likely to have been twins and the children of the teenage Pharaoh, according to an expert.
Professor Robert Connolly is an anatomist working with the Egyptian authorities to analyse the mummified remains of Tutankhamun and the two stillborn children.
He will discuss his new findings at the Pharmacy and Medicine in Ancient Egypt Conference at the University of Manchester today.
Read more ....
Now I Know Why I Am Always Stressed On Vacation
Psychologists have dubbed the high stress levels caused by internet dependency as 'discomgoogolation'.
Feel Stressed If You Can't Get Online? You Could Have 'Discomgoogolation' -- Daily Mail
Soaring numbers of internet addicts are suffering from extreme stress when they are unable to get their online 'hit', a new study has found.
Clinical monitoring of heavy web users revealed their brain activity and blood pressure increased markedly when they were cut off.
The stress of being disconnected was equivalent to that of running half an hour late for a key meeting, being about to sit an important exam or, in the worst cases, being sacked.
Read more ....
Why I Love YouTube
CSN Editor: This is more of a culture/entertainment/arts post than a science post. But we all deserve a break sometimes.
The 50 Greatest Arts Videos On YouTube -- The Guardian
YouTube is best known for its offbeat videos that become viral sensations. But among its millions of clips is a treasure trove of rare and fascinating arts footage, lovingly posted by fans. Ajesh Patalay selects 50 of the best - Joy Division's TV debut, readings by Jack Kerouac, a Marlene Dietrich screen test, Madonna's first performance... and much more
Read more ....
Monday, September 1, 2008
Are Hurricanes Getting More Violent?
A Savage Force Of Nature – And Mounting Evidence They Are Becoming More Violent -- The Independent
Hurricanes are one of the most destructively powerful forces of nature and their existence depends on the surface temperature of the ocean reaching at least 26C. One obvious question is whether Gustav is the result of rising sea temperatures associated with global warming.
The simple answer is that it is virtually impossible to link any one weather event with climate change, yet there is mounting evidence that global warming could be causing hurricanes to increase in both frequency and intensity.
Read more ....
People Who Lose Jobs Become Hermits
From Live Science:
Layoffs can turn social butterflies into near hermits who shun such outlets as book clubs and even church groups, finds a new study.
Workers who experienced just one layoff or involuntary loss of a job were 35 percent less likely to be involved in their communities than their always-employed counterparts, according to the survey that will be published in the September issue of the journal Social Forces.
The researchers suggest the reason could come down to tit for tat, or an attitude of "you don't scratch my back, why should I scratch yours?"
"Social engagement often involves an element of social trust and a sense that things are reciprocal — that you give some support if you get some support, and you benefit from society if society benefits from you," said lead researcher Jennie Brand, a sociologist at UCLA. "When workers are displaced, the tendency is to feel as though the social contract has been violated, and we found that they are less likely to reciprocate."
Read more ....
Layoffs can turn social butterflies into near hermits who shun such outlets as book clubs and even church groups, finds a new study.
Workers who experienced just one layoff or involuntary loss of a job were 35 percent less likely to be involved in their communities than their always-employed counterparts, according to the survey that will be published in the September issue of the journal Social Forces.
The researchers suggest the reason could come down to tit for tat, or an attitude of "you don't scratch my back, why should I scratch yours?"
"Social engagement often involves an element of social trust and a sense that things are reciprocal — that you give some support if you get some support, and you benefit from society if society benefits from you," said lead researcher Jennie Brand, a sociologist at UCLA. "When workers are displaced, the tendency is to feel as though the social contract has been violated, and we found that they are less likely to reciprocate."
Read more ....
Zero Sunspots For The Month Of August -- First Time Since 1913
Sun Has First Spotless Calendar Month
Since June 1913 -- Watts Up With That
Since June 1913 -- Watts Up With That
Many have been keeping a watchful eye on solar activity recently. The most popular thing to watch has been sunspots. While not a direct indication of solar activity, they are a proxy for the sun’s internal magnetic dynamo. There have been a number of indicators recently that it has been slowing down.
August 2008 has made solar history. As of 00 UTC (5PM PST) we just posted the first spotless calendar month since June 1913. Solar time is measured by Coordinated Universal Time (UTC) so it is now September 1st in UTC time. I’ve determined this to be the first spotless calendar month according to sunspot data from NOAA’s National Geophysical Data Center, which goes back to 1749. In the 95 years since 1913, we’ve had quite an active sun. But that has been changing in the last few years. The sun today is a nearly featureless sphere and has been for many days:
Read more ....
More News On This Milestone
Sun Makes History: First Spotless Month in a Century -- Daily Tech
Sunspots May Vanish by 2015 -- Canadian Free Press
Activity is quiet on the sunspot front ... -- Online Opinion
Is The End Of Unlimited Internet Near?
Comcast To Place A Cap On Internet Downloads -- New York Times
Comcast, one of the country’s largest Internet providers, said this week that it would place limits on customers’ broadband usage.
Beginning Oct. 1, Comcast will put a 250 gigabyte-a-month cap on residential users. The limit will not affect most users, at least not in the short-term, but is certain to create tension as some technologies gain traction.
A Comcast spokeswoman, Jennifer Khoury, said 250 gigabytes was about 100 times the typical usage; the average customer uses two to three gigabytes a month. Less than 1 percent of customers exceed the cap, she said.
Many Internet providers reserve the right to cancel the service of the most excessive users. The 250-gigabyte cap is Comcast’s way of specifying a longstanding policy of placing a limit on Internet consumption, and it comes after customer pushed for a definition of excessive use.
Read more ....
More News On Limiting Internet Usage
Critics Question Comcast Broadband Caps -- PC World
More tidbits on the new Comcast cap (updated) -- CNET
Comcast Opens Up About Monthly Internet Usage Cap -- eFluxMedia
Comcast sets 250GB ceiling -- Zdnet
Comcast Sets Bandwidth Threshold For Residential Customers -- Information Week
Comcast Limits Download Volume -- Wall Street Journal
Evolution And Human Nature
David Friedman On Evolution And Human Nature -- Future Pundit
David Friedman says that while Leftists generally accept that evolution occurred they reject all implications evolution has for human nature.
People who say they are against teaching the theory of evolution are very likely to be Christian fundamentalists. But people who are against taking seriously the implications of evolution, strongly enough to want to attack those who disagree, including those who teach those implications, are quite likely to be on the left.
Read more ....
Hurrican Gustav -- News, Blogs, And Up To Date Reports
HURRICANE BLOGS, NEWS, AND LINKS
News
National Hurricane Center -- Home SiteNational Hurricane Center -- Satellite Shots
National Hurricane Center -- Sign Up For Email Advisories
Weather.com -- Hurricane Central News Center
Weather.com -- Hurricane Central News Center Updates
NOLA -- New Orleans, Louisiana news
Houston Chronicle -- Hurricane News
NOAA Satellite And Information Service -- Home Page
Crown Weather Services -- Weather Aggregator
Blogs
Weather UndergroundDr. Jeff Masters' WunderBlog
Weather Nerd
Hurricane Track
Miami Hurricane
Blogs For Gustav
Twitter search for “Hurricane Gustav”Google Blog Search for “Hurricane Gustav”
Technorati search for “Hurricane Gustav”
BlogPulse search for “Hurricane Gustav”
Flickr photo/video search for “Hurricane Gustav”
YouTube video search for “Hurricane Gustav”
HurricanePreparedness.org
Resource Links For Hurricane Gustav
Real Time Satellite Imagery Of Hurricane Gustav -- Cool Science NewsWind Map -- Crown Weather
Gustave Hurricane Tracker -- MSNBC
Maps: Storm Surge Risk from Tropical Storm Gustav: Storm Surge Possibilities -- Wired News
Wireless Carriers Prepare for Hurricane Gustav -- Daily Wireless
Hurricane Gustav Resources
Hurricane Gustav -- Wikipedia
News Links For Hurricane Gustav
Global Storm Tracker -- Yahoo NewsWeather News -- Yahoo News
Hurricane Gustav -- Yahoo News (Recent Stories on Gustav)
Hurricane Gustav -- Google News (Stories For The Past 24 Hours)
News and Newspaper Websites in Louisiana -- ABYZ News Directory
News And Newspaper Websites In Mississippi -- ABYZ News Directory
Sunday, August 31, 2008
Real Time Satellite Imagery Of Hurricane Gustav
For near real time satellite imagery of Hurricane Gustav and its deadly progress, click here.
This updates every 30 minutes. Kudos to the blog Watt's Up With That for doing this.
Previous Post: Hurricane News, Blogs, And Useful Links
This updates every 30 minutes. Kudos to the blog Watt's Up With That for doing this.
Previous Post: Hurricane News, Blogs, And Useful Links
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