Okay, how BIG is Antarctica? Do you have a mental picture? No? Well, here it is, courtesy NASA.
Sunday, October 25, 2009
NASA Ares Rocket Development To Take Too Long
From Future Pundit:An article in New Scientist about the NASA Ares rocket program reports that a White House advisory panel chaired by former Lockheed Martin CEO Norman Augustine recommends against further development of the Ares rocket because it will take too long to develop.
Read more ....The rocket is set to make its first test flight on 27 October. But the committee believes the rocket will not be ready to loft crew to orbit until 2017, two years after the ISS is scheduled to be abandoned and hurled into the Pacific Ocean, Augustine said. Extending use of the space station to 2020 would not make much difference, since this would eat up funds available for Ares I and delay its first flight to 2018 or 2019, added committee member Edward Crawley of MIT.
Color Differences Within And Between Species Have Common Genetic Origin
Body hair difference is more pronounced between chimpanzees and humans than within our own species. Biologists have puzzled over the same genes cause both types of variation, not just with respect to people, chimps and body hair, but for all sorts of traits that differ within and between species. New research shows that, at least for body color in fruit flies, the two kinds of variation have a common genetic basis. (Credit: iStockphoto/Warwick Lister-Kaye)From Science Daily:
Science Daily (Oct. 25, 2009) — Spend a little time people-watching at the beach and you're bound to notice differences in the amount, thickness and color of people's body hair. Then head to the zoo and compare people to chimps, our closest living relatives.
The body hair difference is even more pronounced between the two species than within our own species.
Read more ....
Evidence Alexander The Great Wasn't First At Alexandria
Detail from the Alexander mosaic. From the House of the Faun, Pompeii, c. 80 B.C. Credit: National Archaeologic Museum, Naples, ItalyFrom Live Science:
Alexander the Great has long been credited with being the first to settle the area along Egypt's coast that became the great port city of Alexandria. But in recent years, evidence has been mounting that other groups of people were there first.
The latest clues that settlements existed in the area for several hundred years before Alexander the Great come from microscopic bits of pollen and charcoal in ancient sediment layers.
Read more ....
Solar Snafu: The Contractor Finally Installs The Panels, But Goofs
From Scientific American:
Editor's Note: Scientific American's George Musser will be chronicling his experiences installing solar panels in Solar at Home (formerly 60-Second Solar). Read his introduction here and see all posts here.
The first message I got from my wife last week was happy news indeed: “Solar guys are working on our roof!” As readers of this blog know, we’d started the process of installing solar panels back in February, and we had no idea what were getting ourselves into. The red tape for the state and utility subsidies took through the end of May. Then we had to get our roof restored, which added a couple of months. In early July, I told myself, the wait was over. How wrong I was.Read more ....
Seven Questions That Keep Physicists Up At Night
From New Scientist:It's not your average confession show: a panel of leading physicists spilling the beans about what keeps them tossing and turning in the wee hours.
That was the scene a few days ago in front of a packed auditorium at the Perimeter Institute, in Waterloo, Canada, when a panel of physicists was asked to respond to a single question: "What keeps you awake at night?"
The discussion was part of "Quantum to Cosmos", a 10-day physics extravaganza, which ends on Sunday.
While most panelists professed to sleep very soundly, here are seven key conundrums that emerged during the session, which can be viewed here.
Blood Test Offers More Accurate Picture of Health
From Technology Review:A Seattle company is developing rapid tests for thousands of proteins.
With $30 million in recent financing, a Seattle-based company has launched operations to develop and market inexpensive tests for thousands of blood proteins, offering a comprehensive picture of the health of all the body's organs. The Seattle startup, called Integrated Diagnostics, is developing cheap diagnostics that work in minutes and could be used to detect diseases at early, more treatable stages. The company's technology has been in development for the past nine years in labs at the University of California, Los Angeles, and at the Institute for Systems Biology in Seattle. The company hopes to provide tests for early diagnosis of neurological disorders and other diseases.
Read more ....
Evan Williams On Twitter's Vision For The Future
'Search is a huge thing for us, I think about it a lot,' says Evan Williams, co-founder and chief executive of Twitter Photo: GETTY From The Telegraph:
Twitter's co-founder, Evan Williams, talks exclusively to the Daily Telegraph about the future of online search and his plans for improving the micro-blogging platform.
Imagine a world where you were given answers to questions you didn’t know you had. That’s the future of search according to the chief executive of Twitter, the site every tech company wants a piece of.
Evan Williams doesn’t often give interviews. He usually leaves that to Biz Stone, his colleague and Twitter’s co-founder. I found this out the hard way as I chased him down the stairs at the Web 2.0 conference in San Francisco earlier this week.
Russia Considers New Internet Filtering Technology
From The Net Effect/Foreign Policy:According to this article published on a Russian news-site Inbox.ru, Russia has moved one inch closer to the China-style system of filtering the Web. Russia's Ministry of Communications has urged ISPs to start filtering "negative" Internet content in places that provide public access to the Internet (think cafes, libraries, etc). Such filters have already been planned to be installed in Russian schools.
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The Light Bulb That Lasts 25 Years: It's Environmentally Friendly And As Bright As The Old Ones... But It Will Cost You £30
Photo: Bright idea: The Pharox light bulb lasts 25 years or longer if used for four hours a dayFrom The Daily Mail:
It could be the breakthrough that finally has consumers warming to the energy-saving light bulb.
A version that brightens up instantly, costs just 88p a year to run and lasts up to 25 years has gone on sale in Britain for the first time.
The only catch is that the new LED bulb will cost £30.
Manufacturers claim the Pharox is the first low-energy bulb to give off the same light quality and brightness as a conventional 60-watt traditional bulb.
They say that, despite its initial cost, each bulb will pay for itself in just three years.
After that, each one used could shave around £9 a year off a typical household electricity bill.
Read more ....Wake-Up Call As Population Of Africa Tops 1bn
From The Scotsman:
ONE day this year, in all probability, the billionth African will have been born, a milestone that will benefit the poorest continent only if it can get its act together and unify its piecemeal markets.
Nobody knows when or where in its 53 countries the child arrived to push Africa's population into ten figures. The United Nations estimates that in mid-2008 there were 987 million people, and in mid-2009, 1,010m.
Read more ....
The Perfect Cram Drug? Scientists Identify Single Enzyme To Fix The Memory Of A Tired Brain
It's Cool, I'll Just Write It On My Arm Including all known Lanthanides and Actinides? via Densemstuco From Popular Science:
We've all been there, late at night and early in the morning, forcing any and every last morsel of knowledge into our weak and exhausted brains. But when the test flops down on our desk, we just stare blankly at the forbidding blue book page. All that knowledge, gone. Either it didn't stick, or it has hid in some inaccessible crevasse deep in the brain.
Read more ....
Saturday, October 24, 2009
Biologically Active 'Scaffold' May Help Humans Replace Lost Or Missing Bone
Composite drug-releasing fibers used as basic elements of scaffolding for tissue and bone regeneration. (Credit: AFTAU)From Science Daily:
Science Daily (Oct. 24, 2009) — Mother Nature has provided the lizard with a unique ability to regrow body tissue that is damaged or torn ― if its tail is pulled off, it grows right back. She has not been quite so generous with human beings. But we might be able to come close, thanks to new research from Tel Aviv University.
Read more ....
Bigger Creatures Have Bigger Blood Cells
Largest and smallest species of eyelid geckos appear here in proportion, though somewhat smaller than life size. Credit: Zuzana Starostová & Lukáš KratochvÃlFrom Live Science:
When it comes to metabolism, size matters—cell size, that is, according to a recent study.
Small animals have faster metabolisms relative to their body size than do large animals. According to the so-called metabolic theory of ecology, that scaling is responsible for many patterns in nature—from the average lifespan of a single species to the population dynamics of an entire ecosystem. Although scientists generally agree on the theory's fundamentals, they disagree on the reasons for the scaling. One camp thinks metabolic rate is driven by cell size; another thinks it corresponds to the size and geometry of physiological supply networks, such as the circulatory system.
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Recycled Plastic Bridges Can Support Tanks
Heavy Artillery: U.S. Marines clean an M1A1 Abrams main battle tank at Marine Corps Air Ground Combat Center, Twentynine Palms, Calif. Bridges made from recycled plastic are not only about to support the weight of this tank, but also can provide a cost-effective alternative to steel and concrete construction. Lance Cpl. Kelsey J. Green/U.S. Marine CorpsFrom Discovery News:
The U.S. Army may soon be able to recycle today's trash to support tomorrow's soldiers. New bridges made from recycled detergent bottles and car bumpers are strong enough to hold up a 73-ton Abrams tank.
The recycled plastic bridge takes only a month to build, costs 25 percent less than an equivalent wooden bridge and requires no annual maintenance.
Rutgers University professor Tom Nosker began developing plastic bridges, lumber and railroads ties back in the 1980s.
Read more ....
Spying On A Stolen Laptop
From CNET:Imagine your laptop gets stolen. Wouldn't it be great to remotely spy on the machine and get it back?
Clair Fleener, chief executive of IT outsourcer InertLogic, got that chance after a laptop belonging to a customer was stolen.
Fleener was instrumental in the investigation that led to the recovery of the laptop, monitoring the activities of the laptop user for two weeks using remote software and sharing the information with law enforcement in Omaha, Neb.
Read more ....
Sales Of Virtual Goods Boom In US
From The BBC:Americans look set to spend $1bn (£600m) on virtual goods in 2009, claims a report.
The cash will be spent on add-ons for online games, digital gifts and other items that exist only as data.
Total spend on such items is expected to be up by 100% over 2008 and to double again by the end of 2010, said the analysts behind the report.
In related news, Facebook is updating its gift store so it offers a wider variety of virtual presents.
Read more ....
Solar Power Cost Decline Steeper
From Future Pundit:
The cost of solar panels dropped almost in half in the last year in Germany.
Read more ....In the last year — solar panel prices dropped to $2.10 a watt from about $4.10 in Germany — and only about half the global manufacturing capacity is being used, said Steve O'Rouke, an analyst with Deutsche Bank.
"We've seen an awful lot of angst and difficulty," O'Rouke said. "You have to expect some companies to go out of business."
Deutsche Bank is forecasting a structural over-supply in the market until at least 2011.
Now Playing At A Museum Near You, The “Day After Tomorrow Map”
Click Image to EnlargeFrom Watts Up With That?
Here’s the view of the future in a new science museum according to the Telegraph. No mention if NYC’s West Side Highway will be underwater or not. They call it the “Day after tomorrow map”.
The article by Louise Gray says:
The apocalyptic map was launched by Government ministers at the opening of a new exhibition at the Science Museum.
‘Prove it – everything you need to know to believe in climate change’ is aimed at educating the public about the dangers of uncontrollable global warming.
Read more ....
"Albedo Yachts" And Marine Clouds: A Cure For Climate Change?
SHIP TRACKS: Could ships spraying sea mist to boost cloud reflectivity cure climate change? Already, ship tracks can be picked out in marine clouds, as pictured here, thanks to the interaction of ships' exhaust and water vapor in the atmosphere. Courtesy NASA/GSFC/LaRC/JPL, MISR Team.From Scientific American:
A deep dive into one of the least scary geoengineering schemes to control global warming.
Here's an idea to cool Earth: make marine clouds into better reflectors of sunlight. After all, clouds already reflect more of the sun's radiation back into space than the amount trapped by human emissions of carbon dioxide. So why not make them even more effective?
Read more ....
Flu-Like Illnesses Now Higher Than At Peak Of Seasonal Flu Season
From the L.A. Times:Federal officials report 8,200 hospitalizations for infections from the H1N1 virus, and 411 deaths. But reports of 1 in 5 kids being infected are wrong, they add.
Influenza-like illnesses are now higher throughout the country than levels generally seen at the peak of the seasonal flu season, federal health officials said Friday. But they dismissed media reports from a day earlier that 1 in 5 children had contracted swine flu during the first weeks of October.
Pandemic H1N1 influenza activity continues to spread throughout the country, with 46 states reporting widespread activity, the Centers for Disease Control and Prevention reported.
Read more ....
Ancient Secrets Of Super-Cement May Lead To A Shield Against Bunker Busters
Super-Concrete Let's see if they can break this Air Force Office of Scientific Research From Popular Science:
Super-cements similar to those used to build the pyramids could harden bunkers against missiles.
Super-cements similar to the ancient concrete used to build the pyramids might defeat even the U.S. Air Force's largest non-nuclear bunker buster to date.
Wired's Danger Room has a rundown on how French researcher Joseph Davidovits uncovered the chemistry of geopolymers, or super-cements. Davidovits also put forth the theory that the Egyptian pyramids were built using a similar type of geopolymer limestone concrete -- an idea supported by X-ray and microscopic study samples.
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The Case Against Magnetic Screwdrivers
Click Image to EnlargeFrom Popular Mechanics:
A reader writes in wondering where he can find magnetic screwdrivers like the one his mechanic has. But PM senior automotive editor Mike Allen thinks that tool is unnecessary. Here is his case against magnetic screwdrivers.
Read more ....
Is Unknown Force In Universe Acting On Dark Matter?
M63: The Sunflower Galaxy. (Credit: Satoshi Miyazaki (NAOJ), Suprime-Cam, Subaru Telescope, NOAJ)From Science Daily:
Science Daily (Oct. 23, 2009) — An international team of astronomers have found an unexpected link between mysterious 'dark matter' and the visible stars and gas in galaxies that could revolutionise our current understanding of gravity.
One of the astronomers, Dr Hongsheng Zhao of the SUPA Centre of Gravity, University of St. Andrews, suggests that an unknown force is acting on dark matter. The findings are published this week in the scientific journal Nature.
Read more ....
What Really Scares People: Top 10 Phobias
From Live Science:
Whether you jump at the sight of a spider or work up a sweat at the mere mention of getting on an airplane, fears and phobias abound. About 19.2 million American adults ages 18 and over, or some 8.7 percent of people in this age group in a given year, have some type of specific phobia, or extreme fear. Here are some of the worst.
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Mars May Have Caves, Scientists Say
Mars colonists could use caves for protection from potentially deadly cosmic rays streaming down from space. (NASA / October 24, 2009)From The L.A. Times:
Images of ancient lava flows from the Arsia Mons volcano suggest an extensive system near the Red Planet's equator. Caves could one day aid space explorers.
Caves were some of the earliest refuges for human beings on Earth. Could the same be true for future pioneers on Mars?
Glen Cushing, a space scientist with the U.S. Geological Survey, thinks so. He said he has found evidence of an extensive cave system among ancient volcanoes at Mars' equator.
Read more ....
Controversial Moon Origin Theory Rewrites History
Origin Story. A new study challenges the giant impact hypothesis, which suggested the moon formed from a cosmic collision. NASAFrom Discovery:
Oct. 22, 2009 -- The moon may have been adopted by our planet instead of descended from it.
If a new twist on a decades-old theory is right, conditions in the early solar system suggest the moon formed inside Mercury's orbit and migrated out until it was roped into orbit around Earth.
The idea flies in the face of scientific consensus, known as the giant impact hypothesis, which holds that the moon formed from red-hot debris left over after a Mars-sized object collided with Earth around 4.5 billion years ago.
Read more ....
Obama: U.S. Needs To Lead Clean-Energy Race
President Obama speaking on clean energy at MIT on Friday.(Credit: Martin LaMonica/CNET)
From CNET:
CAMBRIDGE, Mass.--President Barack Obama on Friday called on the U.S. Congress to pass energy-and-climate legislation, a move he said would stimulate technology innovation and improve the economic competitiveness of the United States.
Obama delivered a speech at the Massachusetts Institute of Technology here after touring student laboratories and before attending a fund-raiser for Massachusetts Gov. Deval Patrick.
Read more ....
Epic Humpback Whale Battle Filmed
From The BBC:
It is the greatest animal battle on the planet, and it has finally been caught on camera.
A BBC natural history crew has filmed the "humpback whale heat run", where 15m long, 40 tonne male whales fight it out to mate with even larger females.
During the first complete sequence of this behaviour ever captured, the male humpbacks swim at high speed behind the female, violently jostling for access.
The collisions between the males can be violent enough to kill.
Read more ....
Panel Calls For Big Detour In NASA’s Moon Plans
NASA artwork traces each phase of a future mission to the moon and back.From MSNBC:
Asteroids, Martian moons suggested as alternate destinations.
WASHINGTON - NASA needs to make a major detour in its effort to return astronauts to the moon, a special independent panel told the White House Thursday.
Under current plans, NASA has picked the wrong destination with the wrong rocket, the panel's chairman said. A test-flight version of the rocket, the new Ares I, is on a launch pad at Kennedy Space Center in Florida, awaiting liftoff next week for its first experimental flight.
Read more ....
Will The Pill Be Responsible For The Death Of Humanity?
From Blog Critics:For years, gays have been looking for a gene that would legitimately give them the right to say nature has turned them into the opposite sex. As a result, they believe same-sex marriage should be a natural thing. To gays, same-sex marriage should be something beautiful, natural, and part of God’s big plan. But the reasons may be anything but natural.
A few years ago, right after the sexual revolution of the 1960’s, a large number of chemical ‘cocktails’ that inhibit the function of the male hormone testosterone were found in United Kingdom rivers.
Read more ....
Did Dryas Comet Really Kill Off Mammoth?
Did a comet impact really kill off megafauna such as the mammoth,mastodan and sabre-tooth tiger? Credit: Wikimedia
From Cosmos:
PORTLAND, OREGON: Debate on the existence of a Younger Dryas comet impact, 12,900 years ago, and whether it is linked to mass extinctions of large mammals and early humans in North America reopened this week.
The Younger Dryas was a 1,300-year-long cold snap that affected climate in much of the Northern Hemisphere. In 2007, a team led by Richard Firestone of Lawrence Berkeley National Laboratory, in the U.S., argued that it was caused by the impact of a comet.
Read more ....
Google's Android Allows Soldiers To Put Drones On Buddy List
Phones for Warfighters U.S. Army/Tech. Sgt. Cohen A. Young From Popular Science:
Defense giant Raytheon has turned Google's mobile operating system into a military application.
Google's Android operating system for cell phones could allow soldiers to track fellow squad members and even unmanned drones in real time on a map -- as long as the humans and robots are on their buddy list.
Read more ....
Friday, October 23, 2009
Scientists Reveals Secrets Of Drought Resistance
Soybean sprouts struggling in dry conditions. Biologists have now solved the structure of a critical molecule that helps plants survive during droughts. (Credit: iStockphoto/Matt Niebuhr)From Science Daily:
Science Daily (Oct. 23, 2009) — A team of biologists in California led by researchers at The Scripps Research Institute and the University of California (UC), San Diego has solved the structure of a critical molecule that helps plants survive during droughts. Understanding the inner workings of this molecule may help scientists design new ways to protect crops against prolonged dry periods, potentially improving crop yields worldwide, aiding biofuels production on marginal lands and mitigating drought's human and economic costs.
Read more ....
Why Some Men Can't Control Arousal
From Live Science:
Is sex a state of mind? A recent study from the University of British Columbia finds that while most men can regulate their physical and mental sexual arousal to some degree, the men most able to do so are able to control their other emotions as well.
“We suspect that if an individual is good at regulating one type of emotional response, he/she is probably good at regulating other emotional responses,” says Jason Winters, the study’s research head. “This has never been shown before.”
Read more ....
Tallying The Real Environmental Cost Of Biofuels
William Radcliffe / Science Faction / CorbisFrom Time Magazine:
The promise of biofuels like ethanol is that they will someday help the world grow its way out of its addiction to oil. Nine billion gallons of corn ethanol were produced in the U.S. in 2008, while countries like Brazil have already widely replaced gasoline with ethanol from sugar cane and countless start-ups are working to bring cellulosic and other second-generation biofuels to market. The reasoning is that if we use greener biofuels in place of gasoline, it will significantly enhance our effort to reduce greenhouse-gas emissions.
Read more ....
Awakening Paralyzed Limbs
Photo: Monkey think, monkey do: By translating electrical signals from a monkey’s brain into muscle contractions via implanted electrodes, an animal with a paralyzed arm was able to grasp a ball. Credit: Christian Ethier, Lee Miller From Technology Review:
Brain signals can drive arm movement in a monkey with a paralyzed arm.
A monkey with a paralyzed arm can still grasp a ball, thanks to a novel system designed to translate brain signals into complex muscle movements in real time. The research, presented at the Society for Neuroscience conference in Chicago this week, could one day allow people with spinal cord injury to control their own limbs.
Read more ....
Space: Most Distant Galaxy Cluster Discovered
The galaxy cluster is a billion light years further from earth than any other discovered.From The Telegraph:
The youngest and most distant galaxy cluster yet has been discovered by scientists 10.2 billion light years away, a billion further than the previous record.
The JKCS041 galaxy cluster, discovered by combining x-ray data from NASA with optical and infrared telescopes, is viewed as it was when the universe was a quarter of its current age.
Galaxy clusters are the universe's largest collections of items held together by gravity, and scientists hope the discovery of one at such an early stage will help them discover more about how the universe evolved.
Read more ....
Wildlife Photographer Of The Year 2009 Prize Goes To Leaping Wolf
An Iberian wolf jumps a fence intent on his dinner in this stunningphoto by Jose Luis Rodriguez
From The Daily Mail:
An Iberian wolf strides over a fence, its eyes intent on a tasty meal in the next field.
This stunning image won the Veolia Environement Wildlife Photographer of the Year, organised by the Natural History Museum and BBC Wildlife Magazine.
This year was a bumper year with 43,135 entries from 94 countries – up 33 per cent on 2008. The best 100 images in the competition will go on show from October 23 at the Natural History Museum in London.
The competition manager, Gemma Webster, said: 'While the UK and the US remain our major source of entrants, the greatest growth in entries is happening in China and Russia.'
Read more ....
Unraveling The Brain's Secrets: Humility Required
From Scientific American:In early October, the Singularity Summit took place on Manhattan’s Upper East Side, a conference that highlighted the prospects for abolishing the ravages of aging and disease. So you’ll be able to live forever, unless you get hit by a truck.
Living forever is mainly about preserving brain function. That’s why the cryonicists—the ones who freeze themselves until some hypothetical medical miracle emerges to revive them—often just put the part above the neck into deep storage. The head in the cooler, it is assumed, retains the operating system and all of the applications software needed to resurrect the former self, even if it is ported to some new, cybernetic body. Less real estate and a lower electricity bill means a reduced rate at the cryo farm until you are brought back from the “legally dead.” In essence, bleacher seats for the Singularity.
Read more ....
Vegas Uses Computers To Nab Card Counters
From Yahoo Tech:First they start paying out 6 to 5 on natural blackjacks, and now this? The little guy gets the short end of the stick once again, as UK researchers say they've developed a computer algorithm that can analyze how Blackjack players manage their chip stack and bet on each hand, sniffing out card counters inside 20 hands of the game.
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Quantum Computers Could Tackle Enormous Linear Equations
From Science News:Trillions of variables may prove no match for envisioned systems.
A new algorithm may give quantum computers a new, practical job: quickly solving monster linear equations. Such problems are at the heart of complex processes such as image and video processing, genetic analyses and even Internet traffic control. The new work, published October 7 in Physical Review Letters, may dramatically expand the range of potential uses for quantum computers.
The new quantum algorithm is “head-smackingly good,” says computer scientist Daniel Spielman of Yale University. “It is both very powerful, and very natural. I read the abstract and said, ‘Why didn’t I think of that?’”
Read more ....
Inside Astronaut Boot Camp
Bugging Out: Astronauts test a prototype of a six-legged lunar buggyat Moses Lake in Washington. NASA
From Popular Science:
What does it take to prep humans for a trip to an asteroid or a martian moon? Starvation? Isolation? Recycling feces for food? NASA's newest astronauts begin a grueling training regimen this fall to find out.
Three test pilots. Two flight surgeons. One molecular biologist. A flight controller, a Pentagon staffer and a CIA intelligence officer. These are the nine people chosen by NASA to be America’s next astronauts. Late this summer they reported to Houston along with two Japanese pilots, a Japanese doctor, a Canadian pilot and a Canadian physicist who will train alongside NASA’s class of 2009. Call them the lucky 14.
Read more ....
Twin Study Reveals Secrets To Looking Younger
What keeps a woman looking young?A study of identical twins reveals some surprising answers.
From MSNBC:
Sun, smoking, alcohol and stress can all add years to your face.
For years, the similarities between Jeanne and Susan were uncanny. Growing up, the identical twin sisters not only were mirror images of each other, but also shared a bunch of preferences and personality quirks. Even now, living 1,000 miles apart — Jeanne in Ohio, Susan in Florida — “we’ll send identical Christmas cards to our parents and choose the exact same gift wrap,” Jeanne says. But they do have some differences, she adds: “We don’t have the same taste in men or in weather.”
Read more ....
Advance In 'Nano-Agriculture:' Tiny Stuff Has Huge Effect On Plant Growth
Tomato seeds exposed to carbon nanotubes (right) sprouted and grew faster than unexposed seeds (left).From Science Daily:
Science Daily (Oct. 22, 2009) — With potential adverse health and environmental effects often in the news about nanotechnology, scientists in Arkansas are reporting that carbon nanotubes (CNTs) could have beneficial effects in agriculture. Their study, scheduled for the October issue of ACS Nano, found that tomato seeds exposed to CNTs germinated faster and grew into larger, heavier seedlings than other seeds. That growth-enhancing effect could be a boon for biomass production for plant-based biofuels and other agricultural products, they suggest.
Read more ....
South Pole Offers Prime Astronomy Real Estate
Image credit: Patrick Cullis, National Science FoundationFrom Live Science:
The middle of the world's most remote and inhospitable continent may not seem like an ideal place to conduct complicated scientific research, but this photo shows how the South Pole offers advantages that astronomers and other researchers just can't find anywhere else.
The photo, captured above the new elevated station at Amundsen-Scott South Pole Station in July 2009, is a 20-minute exposure revealing the southern celestial axis — the white cloudy streak is the Milky Way.Read more ....
'Imagineer' Touts Geothermal Energy Invention
Photo: Karl says his portable geothermal generator can power up to 250 average U.S. homes. From The CNN:
(CNN) -- Hidden under a quaint resort 60 miles northeast of Fairbanks, Alaska, lies a treasure trove of potential energy that's free and available 24/7.
Alaskan entrepreneur Bernie Karl has pioneered modern technology to tap into one of Earth's oldest energy resources: hot water.
Karl, 56, likes to call himself an "imagineer."
Using imagination to fuel his engineering ambitions, this tenacious thinker and self-starter has figured out a way to generate electricity using water that's the temperature of a cup of coffee -- about 165 degrees Fahrenheit.
Read more ....
Darwin Lives! Modern Humans Are Still Evolving
A. Green / CorbisFrom Time Magazine:
Modern Homo sapiens is still evolving. Despite the long-held view that natural selection has ceased to affect humans because almost everybody now lives long enough to have children, a new study of a contemporary Massachusetts population offers evidence of evolution still in action.
A team of scientists led by Yale University evolutionary biologist Stephen Stearns suggests that if the natural selection of fitter traits is no longer driven by survival, perhaps it owes to differences in women's fertility. "Variations in reproductive success still exist among humans, and therefore some traits related to fertility continue to be shaped by natural selection," Stearns says. That is, women who have more children are more likely to pass on certain traits to their progeny.
Read more ....
Naming The Exoplanets
From Technology Review:
The International Astronomical Union is refusing to name the exoplanets. That seems unnecessarily curmudgeonly.
Since 1995, astronomers have found more than 400 planets orbiting other stars. And yet not one of them has a formal name, other than their orginal scientific designation such as MOA-2008-BLG-310-L b, (a sub-Saturnian mass planet recently detected in the Galactic Bulge). How come?
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Augustine Report: Tough Choices Ahead On Human Spaceflight
The Ares I-X rocket sits atop launch pad 39B at NASA's Kennedy Space Center in Cape Canaveral, Florida, on Tuesday. (NASA handout/Reuters) From Christian Science Monitor:
If NASA's Constellation program is going to take astronauts to the moon or Mars, Obama will have to increase its budget, the Augustine report says.
President Obama and Congress face a stark choice on the future of NASA’s human spaceflight program: Either scale back ambitious goals first set out in 2005 or pony up more money to match the ambitions.
That’s the implication of options set out in the final report from the Review of US Human Spaceflight Plans committee, unveiled Thursday afternoon.
Read more ....
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