A Science News Aggregator That Covers Stories in the World Of Science And Technology.
Friday, September 18, 2009
Blueprint for a Quantum Electric Motor
From Technology Review:
Place a couple of cold atoms in an alternating magnetic field and you've got a quantum version of an electric motor.
How small can you make an electric motor? Today, Alexey Ponomarev from the University of Augsburg in Germany and a couple of pals describe how to do it with just two atoms. Yep, an electric motor made of just two ultracold atoms.
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Humanoid Robot Plays Soccer
From Wired Science:
et aside your fears of world-dominating cyborgs and say hello to Hajime 33, an athletic robot who’s about as tall as Kobe Bryant. Granted, this bot plays soccer, not basketball (yet).
Created by Hajime Sakamoto, Hajime 33 is the latest addition to Sakamoto’s fleet of humanoid robots. Powered by batteries, the robot is controlled with a PS3 controller, and it can walk and kick a ball. Hajime 33 weighs in at just 44 pounds while overlooking his creator at more than 6 feet 5 inches tall.
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High-Speed Video of Locusts Could Help Make Better Flying Robots
A new study may inspire aeronautical engineers to be more flexible with their designs. That’s because the bends and twists in locusts’ flexible, flapping wings power the insects’ extraordinary long-distance flights, a Sept. 18 Science paper reveals.
Even though researchers have been studying how insects and other creatures fly for a long time, “we still don’t completely understand the aerodynamics and architectures of wings,” comments Tom Daniel of the University of Washington in Seattle, who was not involved in the new study. The new work, Daniel says, uncovers the flight signatures of flapping, flexible wings.
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Mosquito-borne African Virus A New Threat To West
From Reuters:
WASHINGTON (Reuters) - The United States and Europe face a new health threat from a mosquito-borne disease far more unpleasant than the West Nile virus that swept into North America a decade ago, a U.S. expert said on Friday.
Chikungunya virus has spread beyond Africa since 2005, causing outbreaks and scores of fatalities in India and the French island of Reunion. It also has been detected in Italy, where it has begun to spread locally, as well as France.
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'First Clown In Space' Promises To Bring Humour To Astronauts
From The Telegraph:
The man who plans to be "the first clown in space" has said he will liven up the atmosphere on the international space station by playing pranks on the astronauts.
Guy Laliberte, founder of Cirque du Soleil, told reporters he plans to tickle the professional astronauts while they're sleeping, and he's will also bring a consignment of red clown noses aboard.
"I'm a person with a pretty high spirit, who's there to crack jokes and make jokes to those guys, and while they're sleeping, you know, I'll be tickling them," Mr Laliberte said.
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Smoking, High Blood Pressure And Cholesterol Cut Men's Life Expectancy By 10 Years
Major risk factors for heart disease are likely to slash 10-15 years off a man's life, a 40-year study shows.
Men with high blood pressure who smoke and have raised cholesterol levels are likely to die 10 to 15 years early, according to a study of men's lifestyle and health over the last 40 years.
The Whitehall study recruited more than 19,000 men working in the civil service in London between 1967 and 1970, when they were aged between 40 and 69. The latest of a number of influential published papers used the health records of the cohort to establish the life expectancy of middle-aged men who had a number of risk factors for cardiovascular disease.
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Scientists Complete First Geological Global Map Of Jupiter's Satellite Ganymede
From Science Daily:
ScienceDaily (Sep. 18, 2009) — Scientists have assembled the first global geological map of the Solar System’s largest moon – and in doing so have gathered new evidence into the formation of the large, icy satellite.
Wes Patterson, a planetary scientist at the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, led a seven-year effort to craft a detailed map of geological features on Ganymede, the largest moon of Jupiter. Patterson and a half-dozen scientists from several institutions compiled the global map – only the third ever completed of a moon, after Earth’s moon and Jupiter’s cratered satellite Callisto – using images from NASA’s historic Voyager and Galileo missions.
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Why Some People Can't Keep Weight Off
From Live Science:
Studies have shown that people who lose weight and keep it off tend to watch what they eat, whereas those who pack the pounds back on are less meticulous. A new study, albeit a small one, suggests brain differences are at work.
When people who had lost weight and kept it off for years were shown photos of food, they were more likely to engage the areas of the brain associated with behavioral control, compared with obese and normal weight participants.
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Sharks Swarmed on Ancient Sea Monster
From Discovery Channel:
Sept. 17, 2009 -- Remains of a shark-bitten, 85-million-year-old plesiosaur reveal that around seven sharks likely consumed the enormous dinosaur-era marine reptile in a feeding frenzy, leaving some of their shark teeth stuck in the plesiosaur's bones, according to a new study.
The findings, which will be presented at next week's 69th Annual Meeting of the Society of Vertebrate Paleontology, are the first direct evidence of the diet and feeding behavior of Cretalamna appendiculata, a now-extinct early relative of today's great white sharks.
Deadly Second Wave Of Swine Flu 'On Its Way', Scientists Warn
From The Daily Mail:
A second wave of swine flu could be on its way, scientists warned last night after the number of new cases rose for the first time since July.
The jump, from an estimated 3,000 to 5,000, comes a fortnight after children - key spreaders of the disease - returned to school.
There have been outbreaks at six schools in England, but health chiefs repeated that there are no plans to close schools as it would do little to contain the disease.
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Wide Angle: Supplying The Space Station
From Discovery Space:
Regardless of the trials and tribulations going on down here on Earth, the International Space Station continues to orbit the planet. Forget NASA's problems with funding for the moment and remember there are six permanent astronauts and cosmonauts manning this extreme outpost... and they need to eat and drink. How is the space station resupplied? Which nations are ferrying food and water into low-Earth orbit? What plans are there for the future?
In this Wide Angle, we will investigate these questions while learning about the implications the Augustine Commission and how the committee's findings may affect this expensive piece of real estate...
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Real-Time Hackers Foil Two-Factor Security
From Technology Review:
One-time passwords are vulnerable to new hacking techniques.
In mid-July, an account manager at Ferma, a construction firm in Mountain View, CA, logged in to the company's bank account to pay bills, using a one-time password to make the transactions more secure.
Yet the manager's computer had a hitchhiker. A forensic analysis performed later would reveal that an earlier visit to another website had allowed a malicious program to invade his computer. While the manager issued legitimate payments, the program initiated 27 transactions to various bank accounts, siphoning off $447,000 in a matter of minutes. "They not only got into my system here, they were able to ascertain how much they could draw, so they drew the limit," says Roy Ferrari, Ferma's president.
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Planck Telescope's First Glimpse
From The BBC:
The European telescope sent far from Earth to study the oldest light in the Universe has returned its first images.
The Planck observatory, launched in May, is surveying radiation that first swept out across space just 380,000 years after the Big Bang.
The light holds details about the age, contents and evolution of the cosmos.
The new images show off Planck's capabilities now that it has been set up, although major science results are not expected for a couple of years.
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The 33 Most Deadly Substances On Earth
Keep well away from the following 33 substances unless you want to end up 6 feet under.
Location: Europe and in the United States.
In Europe, the blossoms vary in color from pale-green or yellow-olive and along both the east and west coasts in the United States. However, they range from white to light brown in the rest of the United States.
Amanitin can be detected in the blood almost immediately. The first physical symptoms are usually nausea, vomiting, and bloody diarrhea. After an early feeling of slight discomfort, there is a sudden onset of extreme stomach pain, violent vomiting, intense thirst, and cyanosis of the extremities. Jaundice of the eyes and skin can also occur if the liver is badly affected. The patient remains conscious almost to the end, with only brief intervals of unconsciousness occurring between long lucid periods before lapsing into a coma followed by death.
Antidotes and Treatments: There are no known antidotes for Amanita poisoning; however, victims have survived after receiving liver transplants.
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Brunel, Locke And Stephenson: The Engineering Giants Who Shaped Our World
From The Telegraph:
Isambard Kingdom Brunel, Joseph Locke and Robert Stephenson are past giants of engineering whose legacy remains one hundred and fifty years on, says Michael Bailey.
One hundred and fifty years ago today, Isambard Kingdom Brunel, one of the greatest engineers in history, died at the age of just 53. His funeral in Kensal Green cemetery was attended by several hundred people, including Joseph Locke who, with Brunel, had opened up Britain to the railway. He was buried a year later, also in Kensal Green.
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Colour Blindness Breakthrough In Gene Therapy Experiment
From The Guardian:
Two squirrel monkeys that were colour-blind from birth have had their vision restored after receiving gene therapy.
The experiment paves the way for the treatment of a range of genetic eye disorders in humans, including some that cause full or partial blindness in millions of people worldwide.
Sam and Dalton, two male squirrel monkeys, were able to see the world in full colour five months after being treated, doctors said. The animals were born without an ability to see the colour red.
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Thursday, September 17, 2009
Patterns In Mars Crater Floors Give Picture Of Drying Lakes
From Science Daily:
ScienceDaily (Sep. 16, 2009) — Networks of giant polygonal troughs etched across crater basins on Mars have been identified as desiccation cracks caused by evaporating lakes, providing further evidence of a warmer, wetter martian past.
The findings were presented at the European Planetary Science Congress by PhD student Mr M Ramy El Maarry of the Max Planck Institute for Solar System Research.
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What Are The Signs of Diabetes?
From Live Science:
This Week's Question: I've been very thirsty lately and someone mentioned to me that this
is a symptom for diabetes. Is that true?
An intense thirst is one diabetes symptom. Here are others: frequent urination, strong hunger, fatigue, unintended weight loss, slow-healing sores, dry and itchy skin, numbness or tingling in your feet, and blurred vision. However, some people with diabetes do not have symptoms.
Diabetes mellitus is a group of diseases characterized by high levels of blood sugar. Diabetes can create serious health problems, but diabetics can control the disease.
China Says Will Push Space Programme To Catch Up West
From Breitbart/AFP:
China said Thursday its rapidly growing space programme was the crowning achievement of the nation's high-tech transformation and pledged to continue to develop it to close the gap with Western countries.
"I believe a space programme represents a country's high technology and I believe China has already become a major country in high technology," Vice Minister of Science and Technology Li Xueyong told reporters.
"Our success shows not only the progress of the space programme but also our overall level of science and technology," he said at a press briefing.
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Fossil Find Challenges Theories on T. Rex
From The New York Times:
Paleontologists said Thursday that they had discovered what amounted to a miniature prototype of Tyrannosaurus rex, complete with the oversize head, powerful jaws, long legs — and, as every schoolchild knows, puny arms — that were hallmarks of the king of the dinosaurs.
But this scaled-down version, which was about nine feet long and weighed only 150 pounds, lived 125 million years ago, about 35 million years before giant Tyrannosaurs roamed the earth. So the discovery calls into question theories about the evolution of T. rex, which was about five times longer and almost 100 times heavier.
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