A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Friday, October 9, 2009
South Pole Telescope Emerges From Dark Winter With Visions Of Unseen Galaxies
From Times Online:
The South Pole Telescope emerges from a six-month winter of perpetual darkness having discovered clusters of previously unseen galaxies.
The pole has been called “the most benign environment on Earth” for astronomy because of its altitude — 2,800m above sea level — dryness of air and virtual absence of light pollution.
Read more ....
Animals Survived Apocalypse By Burrowing
From Discovery:
When the going gets tough, putting your head in the sand isn't always a bad idea. According to a new study, that's exactly how a group of animals living 250 million years ago survived the worst mass extinction of all time.
In a series of new fossil discoveries in South Africa, researchers have uncovered a slew of petrified burrows, many of them a foot wide and a meter (3.3 feet) or more deep.
Read more ....
The Legacy Of America’s Largest Forest Fire
From The Smithsonian:
A 1910 wildfire that raged across three Western states helped advance the nation’s conservation efforts
Here now came the fire down from the Bitterroot Mountains and showered embers and forest shrapnel onto the town that was supposed to be protected by all those men with faraway accents and empty stomachs. For days, people had watched it from their gabled houses, from front porches and ash-covered streets, and there was some safety in the distance, some fascination even—See there, way up on the ridgeline, just candles flickering in the trees. But now it was on them, an element transformed from Out There to Here, and just as suddenly in their hair, on front lawns, snuffing out the life of a drunk on a hotel mattress, torching a veranda. The sky had been dark for some time on this Saturday in August of 1910, the town covered in a warm fog so opaque that the lights were turned on at three o’clock in the afternoon. People took stock of what to take, what to leave behind. A woman buried her sewing machine out back in a shallow grave. A pressman dug a hole for his trunk of family possessions, but before he could finish the fire caught him on the face, the arms, the neck.
Read more ....
War Injury Leads To Advances At Home
Photograph: John D McHugh/AFP/Getty images
From The L.A. Times:
The military takes the lead in brain trauma research, giving hope to wounded civilians of a 'silent epidemic.'
A world away from the roadside bombs and combat injuries of Iraq and Afghanistan, Americans are suffering the same type of brain injury seen in troops coming home from those war-torn countries. On American roads, at workplaces and on playing fields, more than 11 million have been hurt since the fighting overseas started.
Almost 1 in 5 of these civilians will struggle with lingering, often subtle symptoms -- headaches, dizziness, concentration difficulties and personality changes -- for a year, and often longer. As their memories falter, their work suffers and their relationships fray, many victims of brain trauma don't realize that their cognitive struggles are related to a blow to the head.
Read more ....
My Comment: Explosions, bombings, the noise and concussion of war has consequences that we are only now starting to understand. This research is valuable .... and should be pushed further.
Fresh Impact Risks For Asteroid 'Poster Child'
From New Scientist:
The chances of the asteroid Apophis hitting Earth in 2036 are lower than we thought. But those worried about deep impacts should add a new entry to their calendar: 2068.
When Apophis was first spotted in 2004, the 250-metre-wide rock was briefly estimated to have a 2.7 per cent chance of hitting Earth in 2029. Further observations quickly showed that it will miss Earth that year – but should it pass through a 600-metre-wide "keyhole" in space, it will return to hit Earth in 2036.
Read more ....
Thursday, October 8, 2009
Brain-Computer Interface Allows Person-to-person Communication Through Power Of Thought
From Science Daily:
Science Daily (Oct. 6, 2009) — New research from the University of Southampton has demonstrated that it is possible for communication from person to person through the power of thought -- with the help of electrodes, a computer and Internet connection.
Brain-Computer Interfacing (BCI) can be used for capturing brain signals and translating them into commands that allow humans to control (just by thinking) devices such as computers, robots, rehabilitation technology and virtual reality environments.
Read more ....
Proposal Would Turn San Francisco Bridge Into A City
From Live Science:
San Francisco's Bay Bridge is being redone; a large portion of the bridge will remain unused, but in good shape. What can city planners do with this unique, unused space?
Science fiction writer William Gibson thought about the Bay Bridge in his 1993 novel Virtual Light:
"[Chevette] looked up, just as she whipped between the first of the slabs, and the bridge seemed to look down at her, its eyes all torches and neon. She'd seen pictures of what it had looked like, before, when they drove cars back and forth on it all day, but she'd never quite believed them. The bridge was what it was, and somehow always had been. Refuge, weirdness, where she slept, home to many and all their dreams."
Read more ....
In The Future, All Our Pop Idols Will Be Machines
Direction of NASA’s Future At An Impasse
The committee charged with rethinking American human spaceflight is done thinking, but it’s still unclear what the future of NASA’s astronaut corps might be, and some nagging issues have yet to be resolved.
The U.S. Human Space Flight Plans Committee — known informally as the Augustine commission, after its head Norm Augustine, former CEO of Lockheed Martin — held its last teleconference today. The ball, or hot potato, will soon be in the Obama administration’s court when the group formally presents its alternatives to the Office for Science and Technology Policy.
Read more ....
Fossils Suggest An Ancient CO2-Climate Link
From Time Magazine:
Some of the best evidence linking rising carbon dioxide levels to a warmer world comes from the coldest places on earth. Samples of ancient air extracted from deep inside the Antarctic and Greenland ice caps make it clear that CO2 is scarce in the atmosphere during ice ages and relatively abundant during warmer interglacial periods — like the one we're in now.
The relationship between CO2 and climate is clear going back about 800,000 years. Before that, however, it gets murkier. That's largely because ice and air that old haven't yet been found. So scientists rely instead on indirect measurements — and these have led to a climate mystery: some episodes of past warming, including a planetary heat wave about 15 million years ago and another about 3.5 million years ago, seem to have happened without a rise in CO2. No one quite understands why. Maybe other greenhouse gases were the cause — methane, for example. Or maybe it had to do with changes in ocean circulation.
Read more ....
Europa, Jupiter's Moon, Could Support Complex Life
From Discovery:
Jupiter's moon Europa should have enough oxygen-rich water to support not only simple micro-organisms but also complex life, according to a University of Arizona researcher who studies ice flows on the frozen moon.
Judging by how quickly Europa's surface ice is replenished, Richard Greenberg estimates that enough oxygen reaches the subterranean ocean to sustain "macrofauna" -- more complex, animal-like organisms.
Read more ....
The Fatal Consequences Of Counterfeit Drugs
In Southeast Asia, forensic investigators using cutting-edge tools are helping stanch the deadly trade in fake anti-malaria drugs
In Battambang, Cambodia, a western province full of poor farmers barely managing to grow enough rice to live on, the top government official charged with fighting malaria is Ouk Vichea. His job—contending with as many as 10,000 malaria cases a year in an area twice as large as Delaware—is made even more challenging by ruthless, increasingly sophisticated criminals, whose handiwork Ouk Vichea was about to demonstrate.
Read more ....
PCs Are Best For E-Reading, Microsoft's Ballmer Says
From The Reuters:
ROTTERDAM, Netherlands (Reuters) - Microsoft has no plans to develop a digital book reader to compete with the fast-growing popularity of Amazon's Kindle or a device that rival Apple is reportedly developing.
Chief Executive Steve Ballmer said Microsoft had no need for its own e-reader, since it already supplies the software that runs the most popular device for electronic reading.
"We have a device for reading. It's the most popular device in the world. It's the PC," Ballmer said on Thursday on the sidelines of television show recording at Erasmus University in the Netherlands.
Read more ....
NASA Catches Two Black Holes Sucking Face
From Popular Science:
The Chandra X-ray Observatory helped discover two merging black holes a mere 3,000 light years apart
Colliding black holes may prove more interesting to scientists than the immovable object versus the unstoppable force. New data from NASA's Chandra X-ray Observatory has combined with optical images from Hubble to show off a merging black hole pair in all its glory.
Read more ....
Why NASA Barred Women Astronauts
About 50 years ago, as the US worked towards putting its first men in space, a few people thought there was another option: women in space. The facts about this episode have been somewhat obscured by the myths that have grown up around it.
In 1960-61, a small group of female pilots went through many of the same medical tests as the Mercury astronauts, and scored very well on them – in fact, better than some of the astronauts did. A new study that presents the first published results of their physiological tests shows that much is fact.
Read more ....
Twitter On The Verge Of Big Search Deals?
Are Microsoft and Google hoping to get into Twitter's treasure trove of real-time information? Yes, says Kara Swisher of AllThingsD, citing sources who indicate that the two companies are separately in talks with Twitter about data licensing deals.
This would involve the exchange of several million dollars plus a revenue-share to "compensate Twitter for its huge and potentially valuable trove of real-time and content-sharing information, generated from the data stream of billions of tweets of its 54 million monthly users," Swisher wrote.
Read more ....
'Significant Risk' Of Oil Production Peaking In Ten Years, Report Finds
From Science Daily:
Science Daily (Oct. 8, 2009) — A new report, launched by the UK Energy Research Centre (UKERC), argues that conventional oil production is likely to peak before 2030, with a significant risk of a peak before 2020. The report concludes that the UK Government is not alone in being unprepared for such an event - despite oil supplying a third of the world's energy.
Read more ....
New Shroud of Turin Evidence: A Closer Look
From Live Science:
An Italian scientist and his team claim to have replicated the Shroud of Turin, believed by many to be the burial cloth of Jesus. Luigi Garlaschelli, a professor of chemistry at the University of Pavia, used linen identical to that on the famous shroud, made an impression over a volunteer's face and body, and artificially aged the cloth with heat.
Read more ....
Unmanned Helicopter Hunts Drug Smugglers
From Popular Mechanics:
The Fire Scout unmanned helicopter got its first job—hunting drug smugglers.
MQ-8B became the first unmanned helo to deploy on a naval anti-narcotics mission when it left port in Florida on Monday aboard the USS McInerney (FFG-8). The ship hosted the unmanned aerial vehicle during developmental testing, and crew of Northrop Grumman engineers are also on board to help the aircraft stay healthy.
Read more ....
Electron Microscopes Powered by Quantum Mechanics Could See Through Living Cells
From Popular Science:
Electron microscopes are great and all, but the problem is that you can't use them to get up close and personal inside a living cell without killing it. That might change, however, as scientists are working to use quantum mechanics to overcome this obstacle.
Read more ....
Make Your Own Barcode, Just Like Google
From the Christian Science Monitor:
What’s black and white and read all over? Barcodes. And boy do you people like them.
The Web was buzzing about barcodes today because Google decided to commemorate the 57th anniversary of the first ever patent on them with one of their popular doodles.
Learning A Musical Instrument Helps To Boost Children's Memory
From Times Online:
Learning a musical instrument is beneficial for children’s behaviour, memory and intelligence, a government-commissioned study suggests.
Research found that learning to play an instrument enlarges the left side of the brain, enhancing pupils’ power of memory by almost 20 per cent.
Susan Hallam, of the University of London’s Institute of Education, carried out the research as part of a drive to encourage more children to take up a musical instrument.
Read more ....
England Footballers Miss Penalties As They See The Goal As Smaller Than Their Rivals
From The Telegraph:
England footballers have been handed another excuse for why they keep missing penalties – they perceive the goalmouth as narrower than their successful rivals, claim scientists.
Researchers have discovered that confident sportsman who always score actually see a larger target in their mind's eye.
Conversely those who miss all the time come to see it as smaller.
Jessica Witt, assistant professor of psychological sciences at Purdue University in Indiana, found sportsmen who had been previously successful were more likely to see the goal as wider because their perception had been altered by their success.
Read more ....
Albatross-cam Reveals Amazing Relationship Between Birds And A Killer Whale
From The Daily Mail:
Albatrosses have been captured feeding alongside killer whales for the first time, thanks to tiny cameras fitted on the seabirds' backs.
The amazing pictures reveal albatrosses foraging in groups while at sea collecting food for their chicks.
They followed hunting killer whales who drove food to the ocean surface and tucked into the scraps left behind.
Read more ....
Private Space Technology Powers Up
Credit: José DÃaz, La Nación (top); Ad Astra Rocket Company (bottom)
From Technology Review:
Former astronaut Franklin Chang Diaz says the private sector can help NASA, and reckons he has the rocket to prove it.
In the coming weeks the Obama administration will decide the future of U.S. human spaceflight. A summary report by the committee tasked with reviewing NASA's current plans and providing recommendations suggests utilizing the commercial sector for unmanned, and perhaps manned, missions as a way to reduce government costs. Franklin Chang Diaz, a former NASA astronaut and founder and president of Ad Astra Rocket Company, agrees.
Read more ....
DNA Sequencing In A Holey New Way
From The BBC:
IBM will announce on Tuesday how it intends to hold DNA molecules in tiny holes in silicon in an effort to decode their genetic secrets letter by letter.
Their microelectronic approach solves one of two long-standing problems in "nanopore" DNA sequencing: how to stop it flying through too quickly.
The aim is to speed up DNA sequencing in a push toward personalised medicine.
Read more ....
Wednesday, October 7, 2009
Do Dust Particles Curb Climate Change?
From Science Daily:
Science Daily (Oct. 7, 2009) — A knowledge gap exists in the area of climate research: for decades, scientists have been asking themselves whether, and to what extent man-made aerosols, that is, dust particles suspended in the atmosphere, enlarge the cloud cover and thus curb climate warming. Research has made little or no progress on this issue.
Read more ....
Underground City Envisioned In Nevada
From Live Science:
Sietch Nevada is a fascinating concept exhibited in Innovative Technologies and Climates at the University of Toronto. Fans of the science fiction novel Dune will immediately recognize this proposal - to build semi-subterranean terraced geometries in the Nevada desert.
"In Frank Herbert’s famous 1965 novel Dune, he describes a planet that has undergone nearly complete desertification. Dune has been called the “first planetary ecology novel” and forecasts a dystopian world without water. The few remaining inhabitants have secluded themselves from their harsh environment in what could be called subterranean oasises.
Read more ....
Astronomers Discover Solar System's Largest Planetary Ring Yet Around Saturn
From Scientific American:
A diffuse, newfound ring encircles the gas giant planet at an extraordinary distance.
A speculative search for a belt of debris stemming from one of Saturn's outer moons has turned up what appears to be the largest known planetary ring in the solar system.
The newfound ring, associated with the far-flung moon Phoebe, stretches to roughly 12.5 million kilometers from Saturn, if not more, according to a paper announcing the finding in this week's Nature. (Scientific American is part of the Nature Publishing Group.) For comparison, the outer bound of Saturn's next largest known ring, the E ring, is less than half a million kilometers from the planet.
Read more ....
Anatomy Of A Dying Star
A simulation of a star's final hours may help scientists uncover what triggers its death. The program simulated the death of a white dwarf (pictured above), which is a compact remnant of a star similar to our sun. H. Bond (STScI)/R. Ciardullo (PSU)/WFPC2/HST/NASA
From Discovery Magazine:
A computer program that simulates the final hours of a star's life has been developed by researchers at the Lawrence Berkeley National Laboratory in California and Stony Brook University in New York.
The scientists designed the simulation hoping to uncover what actually triggers a star's death.
For decades, scientists have relied on supernovae to serve as mile markers on the highways of space. These exploded stars can be measured for brightness, which provides an estimate of their physical distance.
Read more ....
Google’s Abandoned Library Of 700 Million Titles
From Epicenter:
Imagine a world where Google sucks.
It might seem a stretch. The Google logo is practically an icon of functionality. Google’s search engine and other tools are the company’s strongest, if unstated, argument in favor of the Google Books Settlement, which would give the internet the largest and most comprehensive library in history, at the cost of granting Google a de facto monopoly. It’s hard to imagine any company better equipped to scan, catalog and index millions of books than Google.
Read more ....
Chemical In Sperm 'May Slow Ageing Process'
From The Telegraph:
Researchers in Austria say that human sperm might be the next weapon in the fight against ageing.
A new study by scientists at Graz University found that spermidine, a compound that is found in sperm, slows ageing processes and increases longevity in yeast, flies, worms and mice, as well as human blood cells, by protecting cells from damage.
Read more ....
Taking The Pill For Last 40 Years 'Has Put Women Off Masculine Men'
It ushered in the 1960s sexual revolution and gave women control over their own fertility.
But according to a new study, the Pill may also have changed women's taste in men.
Scientists say the hormones in the oral contraceptive suppress a female's interest in masculine men - and make boyish men more attractive.
Read more ....
Military Robots To Get A Virtual Touch
From Technology Review:
A modified game controller will give military bomb-disposal experts remote touch.
iRobot, the company that makes military robots as well as the Roomba vacuuming bot, announced last Friday that it will receive funding for several endeavors from the Robotics Technology Consortium (RTC).
One project will see the company develop controllers that give remote robot operators sensory feedback. The US military currently uses iRobot's wheeled PackBot in Iraq and Afghanistan for tasks such as bomb disposal, detecting hazardous materials and carrying equipment.
Why Minds Are Not Like Computers
From The New Atlantis:
People who believe that the mind can be replicated on a computer tend to explain the mind in terms of a computer. When theorizing about the mind, especially to outsiders but also to one another, defenders of artificial intelligence (AI) often rely on computational concepts. They regularly describe the mind and brain as the “software and hardware” of thinking, the mind as a “pattern” and the brain as a “substrate,” senses as “inputs” and behaviors as “outputs,” neurons as “processing units” and synapses as “circuitry,” to give just a few common examples.
Read more ....
Russia Plots Return To Venus
From The BBC:
Densely clouded in acid-laden mist, Venus used to be the Soviet Union's favourite target for planetary exploration.
Now, after a lull of almost three decades, Russia is making plans for a new mission to the "morning star" and has invited Western scientists to participate.
Last week, Moscow-based space research institute IKI hosted an international conference aimed at luring scientists from Europe and possibly other countries such as the US into the ambitious project, officially scheduled for launch in 2016.
Read more ....
Studies Suggest South Coast Of South Africa Birthplace Of Modern Humans
From Science In Africa:
Studies published in the journal Science reports that early modern humans living 72 000 years ago along the south coast of South Africa used fire to improve the quality and efficiency of their stone tool manufacturing. This research provides further evidence that this area may have been the origin location for the lineage that leads to all modern humans, which appeared between 100,000 and 200,000 years ago in Africa.
Read more ....
18th Century Ships' Logs Predict Future Weather Forecast
From Science Daily:
Science Daily (Oct. 6, 2009) — One hundred and fifty years ago, Charles Darwin's Origin of the Species revolutionised how we view the natural world. Now his voyages on HMS Beagle are influencing modern research on the evolution of our climate.
A ground-breaking partnership between JISC, the University of Sunderland, the Met Office Hadley Centre and the British Atmospheric Data Centre sees historical naval logbooks being used for the first time in research into climate change. The logbooks include famous voyages such as the Beagle, Cook’s HMS Discovery and Parry’s polar expedition in HMS Hecla.
Read more ....
Does Taste Decrease With Age?
From Live Science:
This Week’s Question: I have a bet with a friend that you start losing your sense of taste as you get older. She says that her taste is as strong as ever and thinks I’m wrong. Who wins the bet?
In general, sensitivity to taste gradually decreases with age. But there are some whose taste isn’t affected by getting older. Who wins the bet? I won’t touch that one.
The ability to taste food and beverages means a lot to seniors. Let’s face it; we lose a lot of the pleasures of our youth, but eating well isn’t usually one of them.
Read more ....
Abruptly Forgotten: Working Memory Disappears In A Blink
Certain memories die suddenly rather than fading away.
When you go from bed to bathroom on a dark night, a quick flick of the lights will leave a lingering impression on your mind’s eye. For decades evidence suggested that such visual working memories—which, even in daylight, connect the dots to create a complete scene as the eyes dart around rapidly—fade gradually over the span of several seconds. But a clever new study reported in the journal Psychological Science finds that such memories actually stay sharp until they are suddenly lost.
Read more ....
Nobel Prizes For Chemistry Awarded -- News Roundup
Three researchers whose work delves into how information encoded on strands of DNA is translated by the chemical complexes known as ribosomes into the thousands of proteins that make up living matter will share the 2009 Nobel Prize in Chemistry, the Swedish Academy of Sciences said Wednesday.
The trio are Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in Cambridge, England; Thomas A. Steitz of Yale University; and Ada E. Yonath of the Weizmann Institute of Science in Rehovot, Israel. Each scientist will get a third of the prize, worth 10 million Swedish kronors in total, or $1.4 million, in a ceremony in Stockholm on Dec. 10.
Read more ....
Trio wins chemistry Nobel for solving ribosome riddle -- Reuters
2 Americans, Israeli share Nobel Prize in chemistry -- L.A. Times
Ada Yonath: first Israeli woman to win a Nobel -- AFP
US duo, Israeli win Nobel Chemistry Prize -- AFP
3 Scientists Share Nobel Chemistry Prize for DNA Work -- Voice of America
2 Americans, 1 Israeli win Nobel chemistry prize -- AP
Cambridge chemist wins Nobel prize for showing how proteins are made in cells -- The Guardian
Nobel Prize in chemistry awarded for ribosome research -- Science News
X-ray crystallography at the heart of the 2009 Nobel chemistry prize -- Physics Today
Nobel Prize In Chemistry: What Ribosomes Look Like And How They Functions At Atomic Level -- Science Daily
Unraveling the Ribosome: Chemistry Nobel Awarded to Modelers of Cells' Protein-Maker -- Scientific American
FACTBOX: Nobel chemistry prize - Who are the winners? -- Reuters
List of recent Nobel Prize in chemistry winners -- AP
Flying Feline, Hidden Kitten: The Fur Flies In Amazing 'Ninja' Cat Fight
From The Daily Mail:
Leaping through the air, claws outstretched these cats appear locked in mortal combat.
But rather than a deathly duel over a mouse or territory, this acrobatic pair are simply play-fighting.
Dubbed the 'ninja cats' after the Japanese feudal warriors, the sparring pair are in fact Muffi and his friend Tiger.
Read more ....
Discovery Sheds New Light On Stonehenge
From The L.A. Times:
Archaeologists say the remains of another large henge near the River Avon offer clues to the building of Stonehenge and the significance of the river. They had sought the telltale holes for years.
British archaeologists have found the remains of a massive stone henge, or ceremonial circle, that was part of the ancient and celebrated Stonehenge complex, a find that is shedding new light on how the monument was built and its religious uses.
Read more ....
Is The Arctic Ready To Give Up Its Treasures?
From The Telegraph:
Global warming could reveal lucrative reserves of untapped oil, gas and precious metals beneath the ice caps in the near future - but at what environmental cost?
For all the talk among world leaders of the perils of climate change, many are scenting an opportunity. As the Arctic ice retreats, surrounding nations are looking to plunder those natural resources under the surface, estimated by the US Geological Survey to constitute as much as 13 per cent of the world’s undiscovered oil and 30 per cent of its undiscovered natural gas – as well as precious metals including iron ore, gold, zinc and nickel.
Read more ....
Nasa 'Needs Another £30bn To Fulfil Moon Mission'
From Times Online:
Nasa will not be able to meet its target of sending humans back to the Moon by 2020, or even dream of landing on Mars, because it is suffering from chronic underfunding, a presidential review panel has warned.
The US space agency needs at least another $50 billion (£30 billion) over the next decade if it is to come close to delivering on its vision for retiring the space shuttle, completing construction of the International Space Station and launching ambitious new voyages of discovery.
The bleak assessment comes from a ten-member committee established by President Obama to review America’s manned spaceflight programme. Made up of aerospace experts and former astronauts, it is not due to make its final report until the end of this month.
Read more ....
Why Women Have Sex
From Time Magazine:
While figuring out what women want has stumped men for centuries, understanding how they think about sex may have just gotten easier. Cindy Meston and David Buss, psychologists at the University of Texas, interviewed over 1,000 women around the world for their book Why Women Have Sex and managed to come up with 237 reasons, ranging from the predictable — commitment — to the puzzling — curing a headache. Spoiler alert: love may be further down on the list than one might think. TIME spoke to Buss about the myriad mind games, turn-ons and turn-offs involved in female sexuality, and what a guy can do to stand a chance.
Read more ....
The Faces of Singularity: Are You Ready For The Human-Robot Merge?
From Popular Science:
We asked an assortment of the Singularity Summit's brilliant minds how they're looking forward to a life merged with artificial intelligence
The Singularity Summit drew a wide range of people from around the globe. There were technology companies hoping to spread brand recognition, quasi-spiritual sojourners looking for a new clue to the secret of immortality, and serious academics interested in cutting edge in artificial intelligence.
Read more ....
Tuesday, October 6, 2009
Acidic Clouds Nourish World's Oceans
From Science Daily:
Science Daily (Oct. 6, 2009) — Scientists at the University of Leeds have proved that acid in the atmosphere breaks down large particles of iron found in dust into small and extremely soluble iron nanoparticles, which are more readily used by plankton.
This is an important finding because lack of iron can be a limiting factor for plankton growth in the ocean - especially in the southern oceans and parts of the eastern Pacific. Addition of such iron nanoparticles would trigger increased absorption of carbon dioxide from the atmosphere.
Read more ....
Ancient Rome's Real Population Revealed
From Live Science:
The first century B.C. was one of the most culturally rich in the history of the Roman Empire — the age of Cicero, Caesar and Virgil. But as much as historians know about the great figures of this period of Ancient Rome, they know very little about some basic facts, such as the population size of the late Roman Empire.
Now, a group of historians has used caches of buried coins to provide an answer to this question.
During the Republican period of Rome (about the fifth to the first centuries B.C), adult male citizens of Rome could be taxed and conscribed into the army and were also given the right to vote. To keep track of this section of the population (and their taxable assets), the Roman state conducted periodic censuses.
Read more ....My Book Is Mine, Not Google's -- A Commentary
From New Scientist:
NEXT week details of a plan that could shape the future of books and publishing in the digital age will be spelled out in a New York courtroom. The plan is complex but, in a nutshell, search engine giant Google intends to scan and make available perhaps a million or more books that are out of print but still in copyright.
Google has the support of the Authors Guild and the Association of American Publishers, but it faces formidable opposition. Some 400 legal objections have been filed, and the US Department of Justice has serious concerns. The dispute was due to be resolved in court next week, but at the last minute Google and its partners asked for the case to be adjourned so they could make revisions. A hearing will still take place, but only to inform the parties concerned how Google intends to proceed.
Read more ....
Black Holes Go 'Mano A Mano'
From Space Daily:
This image of NGC 6240 contains new X-ray data from Chandra (shown in red, orange, and yellow) that has been combined with an optical image from the Hubble Space Telescope originally released in 2008. In 2002, the discovery of two merging black holes was announced based on Chandra data in this galaxy.
The two black holes are a mere 3,000 light years apart and are seen as the bright point-like sources in the middle of the image.
Read more ....