Friday, September 18, 2009

Solar Cycle Driven By More Than Sunspots; Sun Also Bombards Earth With High-speed Streams Of Wind

When the solar cycle was at a minimum level in 1996, the Sun sprayed Earth with relatively few, weak high-speed streams containing turbulent magnetic fields (left). In contrast, the Sun bombarded Earth with stronger and longer-lasting streams last year (right) even though the solar cycle was again at a minimum level. The streams affected Earth's outer radiation belt, posing a threat to earth-orbiting satellites, and triggered space weather disturbances, lighting up auroras in the sky at higher latitudes.

From Science Daily:

ScienceDaily (Sep. 18, 2009) — Challenging conventional wisdom, new research finds that the number of sunspots provides an incomplete measure of changes in the Sun's impact on Earth over the course of the 11-year solar cycle. The study, led by scientists at the High Altitude Observatory of the National Center for Atmospheric Research (NCAR) and the University of Michigan, finds that Earth was bombarded last year with high levels of solar energy at a time when the Sun was in an unusually quiet phase and sunspots had virtually disappeared.

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Sea Stars Grow Faster As Water Warms

Purple ocher sea stars prey on mussels. Credit: Dave Cowles

From Live Science:

Climate change will deal clams, mussels, and other marine bivalves a double whammy. Biologists already expect them to have trouble making their shells because elevated carbon dioxide (CO2) levels will acidify seawater. Now it seems they’ll also have to contend with brawnier predatory starfish.

Bivalves are the preferred prey of the purple ocher sea star (Pisaster ochraceus), a familiar denizen of the intertidal zone along the Canadian and American west coast.

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Lunar Orbiter Begins Long-Awaited Mapping Mission

In a surprise, high-resolution data from the Lunar Reconnaissance Orbiter, right, shows indications of hydrogen both inside and outside of permanently shadowed craters. (Credit: NASA)

From CNET:

After two months of checkout and calibration, NASA's $504 million Lunar Reconnaissance Orbiter was maneuvered into a circular 31-mile-high mapping orbit Tuesday, and scientists said Thursday the spacecraft's instruments are delivering intriguing clues about the possible presence of water ice.

"The moon is starting to reveal her secrets, but some of those secrets are tantalizingly complex," said Michael Wargo, NASA's chief lunar scientist.

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Colossal Apollo Statue Unearthed in Turkey

Apollo, God of the Sun. The bust of the recently discovered statue of the Greek god Apollo appears above. The massive statue, around four meters (13 feet) in height, is one of only about a dozen in existence. Francesco D'Andria

From the Discovery Channel:

Sept. 8, 2009 -- A colossal statue of Apollo, the Greek god of the sun, light, music and poetry, has emerged from white calcified cliffs in southwestern Turkey, Italian archaeologists announced.

Colossal statues were very popular in antiquity, as evidenced by the lost giant statues of the Colossus of Rhodes and the Colossus of Nero. Most of them vanished long ago -- their material re-used in other building projects.

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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

From Wired Science:

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

A man walks behind a model of an Anopheles mosquito in the new Darwin Centre at the Natural History Museum, in London September 8, 2009. REUTERS/Stefan Wermuth

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

Canadian billionaire Guy Laliberte, who owns Cirque du Soleil, is set to become the world's seventh and Canada's first space tourist Photo: REUTERS

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

From The Guardian:

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

Top: A global mosaic of Jupiter's moon Ganymede, constructed from the best images collected during flybys of the Voyager 1, Voyager 2, and Galileo spacecraft. Bottom: A few layers of the geologic map of Ganymede, showing the boundaries between light terrain (white) and dark terrain (brown), and the massive number of tectonic features in the light terrain (black lines). The map is being used to analyze stress fields that could have been responsible for ripping apart the surface of Ganymede in the past (red arrows). (Credit: Image courtesy of Europlanet Media Centre)

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

Voracious Predator. Cretalamna appendiculata, was an early relative of today's great white shark, shown here. Getty Images

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.

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Deadly Second Wave Of Swine Flu 'On Its Way', Scientists Warn

Disruption: A woman walks through London with a surgical mask in an attempt to protect her from swine flu (file picture). Scientists fear the deadly second wave of swine flu is on its way.

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

The space station needs supplies, and now Japan is helping NASA, Roscosmos and ESA to feed the crew and ferry equipment to and from Earth orbit. However, concerns about the US space agency's funding issues could spell trouble in the future. Credit: JAXA

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

Credit: Technology Review

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

Planck maps tiny temperature variations (the mottled colours in the strip) in nine frequency ranges overlaid here. These fluctuations correspond to the matter distribution in the early cosmos. Planck needs six months to complete a full sky map. Esa released more detailed data on the square regions.

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

From The Toy Zone:

Keep well away from the following 33 substances unless you want to end up 6 feet under.


1. Amanitas – Destroying Angel

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

Paddington station: designed by Isambard Kingdom Brunel and opened in 1847
Photo: PA

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

Squirrel monkey Dalton, who was successfully treated for red-green colour blindness. The image on the left simulates what the scene would have looked like to a monkey or human before the treatment. Photograph: Neitz Laboratory

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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