From The BBC:
A computer scientist claims to have computed the mathematical constant pi to nearly 2.7 trillion digits, some 123 billion more than the previous record.
Fabrice Bellard used a desktop computer to perform the calculation, taking a total of 131 days to complete and check the result.
This version of pi takes over a terabyte of hard disk space to store.
Previous records were established using supercomputers, but Mr Bellard claims his method is 20 times more efficient.
The prior record of about 2.6 trillion digits, set in August 2009 by Daisuke Takahashi at the University of Tsukuba in Japan, took just 29 hours.
However, that work employed a supercomputer 2,000 times faster and thousands of times more expensive than the desktop Mr Bellard employed.
Read more ....
A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Wednesday, January 6, 2010
Tuesday, January 5, 2010
The Moment Comet Was Eaten Up After Orbiting Too Close To The Sun
From The Daily Mail:
A comet has been captured by Nasa being 'eaten' as it flies too close to the sun.
The space agency's solar-focused agency - Solar and Helioscopic Observatory (SOHO) - captured footage of the Kreutz Sungrazer as it made its fateful approach.
The footage has proven popular on YouTube and scientific and astronomical websites and blogs.
Read more ....
C.I.A. Is Sharing Data With Climate Scientists
A satellite image of East Siberian Sea from 1999-2008. This image has been degraded
to hide the satellite’s true capabilities. USGS
to hide the satellite’s true capabilities. USGS
From The New York Times:
The nation’s top scientists and spies are collaborating on an effort to use the federal government’s intelligence assets — including spy satellites and other classified sensors — to assess the hidden complexities of environmental change. They seek insights from natural phenomena like clouds and glaciers, deserts and tropical forests.
The collaboration restarts an effort the Bush administration shut down and has the strong backing of the director of the Central Intelligence Agency. In the last year, as part of the effort, the collaborators have scrutinized images of Arctic sea ice from reconnaissance satellites in an effort to distinguish things like summer melts from climate trends, and they have had images of the ice pack declassified to speed the scientific analysis.
Read more ....
My Comment: The CIA has some great equipment .... I cannot blame the scientists who want to get their hands on this data.
Can Full-Body Airport Scanners Harm You?
From CNET:
Since explosive materials were sneaked onto a U.S. domestic flight on Christmas Day, full-body scanning machines are far more likely to make their way to security lines at your local airport, even though they might not have detected said materials.
While the Transportation Security Administration already has 40 such devices in place, it just bought 150 to be placed in U.S. airports and says it plans to buy 300 more (they go for $170,000 apiece). On Wednesday, the Netherlands announced that these scanners would be used on passengers for all flights out of Amsterdam to the U.S., and there is talk of scanners in Nigeria as well.
My Comment: They better find the answers soon before we start spending billions of dollars for this tech.
Apple To Unveil Tablet In January, Ship In March - WSJ
From Apple Insider:
Apple later this month will preview its long-awaited touch-screen tablet before shipping the device to consumers two months later, the Wall Street Journal is reporting.
Echoing claims of an early 2010 launch of the 10-inch device first reported by AppleInsider last July, the financial paper cited "people briefed on the matter" as saying that Apple has been experimenting with "two different material finishes" for the hardware.
Read more ....
New Exoplanet Hunter Makes First 5 Discoveries
From Wired Science:
The Kepler Space Telescope, a designated planet-hunting satellite, has found its first five planets, among them an odd, massive world only as dense as Styrofoam.
The number of planets now known outside the solar system has risen to more than 400, but none is yet Earth-like enough to harbor life. Right now, Kepler can only detect large planets orbiting close to their stars, which means that these first planets are too hot to hold liquid water, a requirement for life as we know it.
But over the next year, the mission’s scientists will be homing in on ever more life-friendly places.
Read more ....
Precious Metals That Could Save The Planet
The Rare Earth Research Institute is in Baotou City, above,
in the Autonomous Region of Inner Mongolia, China
in the Autonomous Region of Inner Mongolia, China
From The Independent:
Rare earth elements are driving a revolution in low-carbon technology. Cahal Milmo reports on the commodity that has become the new oil.
Baotou was of little interest to the outside world for millennia. When one of the first visitors reached its walls in 1925, it was described as "a little husk of a town in a great hollow shell of mud ramparts". Some 84 years later, this once barren outpost of Inner Mongolia has been transformed into the powerhouse of China's dominance of the market in some of the globe's most sought-after minerals.
Read more ....
The Real Frankenstein Experiment: One Man's Mission To Create A Living Mind Inside A Machine
Professor Markram believes that if his 'Blue Brain' project is successful,
it will render vivisection obsolete
it will render vivisection obsolete
From The Daily Mail:
His words staggered the erudite audience gathered at a technology conference in Oxford last summer.
Professor Henry Markram, a doctor-turned-computer engineer, announced that his team would create the world's first artificial conscious and intelligent mind by 2018.
And that is exactly what he is doing.
Read more ....
Monday, January 4, 2010
Microorganisms Cited As Missing Factor In Climate Change Equation
The research incorporates into global computer models the significant impact an enzyme, carbonic anhydrase, has on the chemical form of carbon dioxide released from the soil and reduces uncertainties in estimates of CO2 taken up and released in terrestrial ecosystems. (Credit: iStockphoto/Stefan Klein)
From Science Daily:
Science Daily (Jan. 4, 2010) — Those seeking to understand and predict climate change can now use an additional tool to calculate carbon dioxide exchanges on land, according to a scientific journal article publishing this week.
The research, publishing in the Proceedings of the National Academy of Sciences, incorporates into global computer models the significant impact an enzyme, carbonic anhydrase, has on the chemical form of carbon dioxide released from the soil and reduces uncertainties in estimates of CO2 taken up and released in terrestrial ecosystems.
Read more ....
Diet Demystified: Why We Overeat
From Live Science:
As Americans begin the process of breaking their New Year's resolutions — sure, one king-sized Kit Kat won’t hurt anyone — they can forgive themselves with a consolation: Hormones may be to blame.
In a new study, which was published online Dec 24 in the journal in the future] published online in the journal Biological Psychiatry, researchers have found that the hormone ghrelin causes mice to search out food — even when they weren’t hungry.
Read more ....
Dubai Set To Open World's Tallest Building
From CBS News:
Security Tight at Unveiling of Tower More Than 160 Stories Tall.
(AP) Dubai is set to open the world's tallest building amid tight security on Monday, celebrating the tower as a bold feat on the world stage despite the city state's shaky financial footing.
But the final height of the Burj Dubai - Arabic for Dubai Tower - remained a closely guarded secret on the eve of its opening. At more than 2,625 feet, it long ago vanquished its nearest rival, the Taipei 101 in Taiwan.
Read more ....
Sex And Shopping – It's A Guy Thing
It's not what you give, it's what your gift says about you that counts
(Image: George Eastmant House/Hulton/Getty)
(Image: George Eastmant House/Hulton/Getty)
From New Scientist:
PEOPLE have radically diverse responses to the very idea of conspicuous consumption. Some folks consider it blindingly obvious that most economic behaviour is driven by status seeking, social signalling and sexual solicitation. These include most Marxists, marketers, working-class fundamentalists and divorced women. Other folks consider this an outrageously cynical view, and argue that most consumption is for individual pleasure ("utility") and family prosperity ("security"). Those folks include most capitalists, economists, upper-class fundamentalists, and soon-to-be-divorced men.
Read more ....
2009’s Sleepy Sun Finally Woke Up In December
From Wired Science:
2009 will go down as the sun’s third quietest year on record, under-shone only by 1913 and 2008.
Two hundred-sixty of the year’s 365 days (71 percent) were sunspotless. Last year saw 266 sunspotless days, while the sun had no spots on 311 of the days in 1913. It was only a very active December that kept 2009 from falling below last year’s mark.
Sunspot activity waxes and wanes in a roughly 11-year cycle, so hitting solar minima isn’t surprising. But what the numbers underscore is that we spent much of the year still in the midst of the deepest, longest solar minimum in a long time.
Read more ....
Slim, Large Screen E-Reader Skiff To Debut On Sprint
From Gadget Lab:
E-readers are likely to get hotter with the next generation of devices sporting color screens and large displays expected to launch through the year.
One of the first products to announce its arrival is the Skiff e-reader, a lightweight device with a 11.5-inch full flexible touchscreen that makes it the largest e-reader on the market, beating the 9.7-inch display Kindle DX.
Read more ....
Children Reaching Age 3 Without Being Able To Say A Word, Survey Finds
From Times Online:
Children are reaching the age of 3 without being able to say a word, according to a survey that also found boys are almost twice as likely to struggle to learn to speak as girls.
The average age for a baby to speak their first word is 10 to 11 months. However, a significant minority (4 per cent) of parents reported that their child said nothing until they were 3.
Toddlers between the ages of 2 and 3 should be able to use up to 300 words, including adjectives, and be able to link words together, according to I CAN, the children’s communication charity. Late speech development can lead to problems, such as low achievement at school or mental health problems.
Read more ....
Children are reaching the age of 3 without being able to say a word, according to a survey that also found boys are almost twice as likely to struggle to learn to speak as girls.
The average age for a baby to speak their first word is 10 to 11 months. However, a significant minority (4 per cent) of parents reported that their child said nothing until they were 3.
Toddlers between the ages of 2 and 3 should be able to use up to 300 words, including adjectives, and be able to link words together, according to I CAN, the children’s communication charity. Late speech development can lead to problems, such as low achievement at school or mental health problems.
Read more ....
Deadly Animal Diseases Poised To Infect Humans
Health workers culling poultry at Shoilpur village near the Indian city of Kolkata. The H5N1 bird flu pandemic spread across the world in 2003 causing widespread panic and has so far killed 260 people. Reuters
From The Independent:
Environmental disruption set to trigger new pandemics, scientists warn.
The world is facing a growing threat from new diseases that are jumping the human-animal species barrier as a result of environmental disruption, global warming and the progressive urbanisation of the planet, scientists have warned.
At least 45 diseases that have passed from animals to humans have been reported to UN agencies in the last two decades, with the number expected to escalate in the coming years.
Read more ....
New Images Show Evidence Of Lakes On Mars, Say Scientists
From The Guardian:
Nasa pictures suggest existence of 12 mile-wide lakes of melted ice on Martian equator 3bn years ago.
Lakes of liquid water existed on Mars at a time when the planet was previously thought to be a frozen desert, new satellite images have shown.
A team of British-led scientists now believes 12 mile-wide lakes of melted ice were dotted around parts of the Martian equator 3bn years ago.
No one had expected to find evidence of a warm, wet climate capable of sustaining surface water on Mars during this period of the planet's history, known as the Hesperian epoch.
Read more ....
G-Day Is Tomorrow: Google To unveil 'iPhone Killer' Nexus One... With An Online Price Tag Of £300
From The Daily Mail:
Google will finally reveal its first mobile phone tomorrow after months of frenzied speculation about its arrival.
The Nexus One handset, which uses software designed by the internet giant, has been developed to take on the dominant iPhone, which is used by 25million people worldwide.
Full details of the Google-branded touchscreen device - manufactured by Taiwanese company HTC - have mostly been kept under wraps despite occasional leaks.
Read more ....
Hitachi Reportedly Develops Brain-Powered Remote Control
From Market Watch:
TOKYO (MarketWatch) -- Hitachi Ltd. has developed a prototype remote control that allows users to operate electronic devices telepathically -- simply willing the television channel to change or the air-conditioning to turn on -- according to a report Monday.
Hitachi's (TSE:JP:6501) (NYSE:HIT) "brain-machine interface system" features a headset that measures slight changes in blood flow in the brain, specifically by scanning it with near-infrared rays, business daily Nikkei reported in its Monday evening edition.
Read more ....
TOKYO (MarketWatch) -- Hitachi Ltd. has developed a prototype remote control that allows users to operate electronic devices telepathically -- simply willing the television channel to change or the air-conditioning to turn on -- according to a report Monday.
Hitachi's (TSE:JP:6501) (NYSE:HIT) "brain-machine interface system" features a headset that measures slight changes in blood flow in the brain, specifically by scanning it with near-infrared rays, business daily Nikkei reported in its Monday evening edition.
Read more ....
Using Modern Sequencing Techniques To Study Ancient Humans
New research shows how it is possible to directly analyze DNA from a member of our own species who lived around 30,000 years ago. (Credit: iStockphoto/Andrey Prokhorov)
From Science Daily:
ScienceDaily (Jan. 4, 2010) — DNA that is left in the remains of long-dead plants, animals, or humans allows a direct look into the history of evolution. So far, studies of this kind on ancestral members of our own species have been hampered by scientists' inability to distinguish the ancient DNA from modern-day human DNA contamination.
Read more ....
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