Caffeine Experts At Johns Hopkins Call For Warning Labels For Energy Drinks

From E!Science News:

Johns Hopkins scientists who have spent decades researching the effects of caffeine report that a slew of caffeinated energy drinks now on the market should carry prominent labels that note caffeine doses and warn of potential health risks for consumers. "The caffeine content of energy drinks varies over a 10-fold range, with some containing the equivalent of 14 cans of Coca-Cola, yet the caffeine amounts are often unlabeled and few include warnings about the potential health risks of caffeine intoxication," says Roland Griffiths, Ph.D., one of the authors of the article that appears in the journal Drug and Alcohol Dependence this month.

The market for these drinks stands at an estimated $5.4 billion in the United States and is expanding at a rate of 55 percent annually. Advertising campaigns, which principally target teens and young adults, promote the performance-enhancing and stimulant effects of energy drinks and appear to glorify drug use.

Without adequate, prominent labeling; consumers most likely won't realize whether they are getting a little or a lot of caffeine. "It's like drinking a serving of an alcoholic beverage and not knowing if its beer or scotch," says Griffiths.

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Green Ways To Care For Your Pet

Dirty Dogs and Carbon Cats -- The Slate

The greenest ways to care for your pet.

This one is a little gross, but I have lots of pets at home, and most of my weekly waste is composed of dog and cat poop. What's the best way to dispose of all that so that I don't end up hurting the environment?

The Lantern has never been trusted to care for any pet larger than a hamster—rest in peace, Fonzie!—so he'll admit that this question falls a little outside his comfort zone. But your question raises an important point: To own a dog or cat can significantly increase the ecological footprint of your household. The Lantern hopes to cover other aspects of domestic animal husbandry in the future, but today let's focus one of the most important ways you can manage your pet's "pawprint": responsible waste disposal.

Whether you have a dog or a cat, you'll have two problems to deal with: How do you collect your animal's poop, and what do you do with it once you have it in hand? Most dog owners have been conditioned to clean up after their pets when they walk on public streets and sidewalks. But it's just as important to dispose properly of dog waste in your own backyard. Pet waste contains bacteria that can contaminate local waterways if it washes from your lawn into storm drains. In large enough quantities, this pollution can remove oxygen from streams and rivers and contribute to algal blooms, threatening marine life.

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Sun's Wind And Output On Extended Dimmer Switch: Scientists

From CNews Science:

WASHINGTON - The sun has dialled back its furnace to the lowest levels seen in the space age, new measurements from a space probe show.

But don't worry - it's too small a difference to change life on Earth, scientists say.

In fact, it means satellites can stay in orbit a little longer.

The solar wind - a stream of charged particles ejected from the sun's upper atmosphere at 1.6 million kilometres per hour - is significantly weaker, cooler and less dense than it has been in 50 years, according to new data from the NASA-European solar probe Ulysses.

And for the first time in about a century, the sun went for two months this summer without sunspots, said NASA solar physicist David Hathaway.

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New Optics Technology To Study Alien Worlds

Artist's concept of the New Worlds Observatory. The dark, flower-shaped object in the center is the star shade. (Credit: NASA and Northrop Grumman)

From Science Daily:

ScienceDaily (Sep. 24, 2008) — NASA Goddard scientist Rick Lyon has been working on potential missions and technologies to find planets around other stars (called exoplanets or extrasolar planets) since the late 1980s. Only recently has he begun to believe that NASA may actually fly a planet-finding mission in his lifetime.

"This is the closest it’s come to being real," he said.

Lyon and other scientists and engineers at NASA's Goddard Space Flight Center in Greenbelt, Md., have joined teams studying optics technologies for three possible exoplanet missions: the Extrasolar Planetary Imaging Coronagraph (EPIC), the New Worlds Observer (NWO), and the eXtrasolar Planet Characterization (XPC) mission.

The possibility of a mission devoted to planet finding is tantalizing, especially to those interested in ratcheting up a science that began 13 years ago when astronomers found and confirmed the existence of the first planet outside the solar system. Since then, scientists have confirmed nearly 300, most of which are gas giants like Jupiter. However, most of these detections have been indirect, because the planets are too faint to be seen directly. Instead, their presence is revealed by measuring how much the unseen world's gravity pulls on its parent star.

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Chocolate Helps Heart Stay Healthy

From Live Science:

A small square of dark chocolate daily protects the heart from inflammation and subsequent heart disease, a new study of Italians suggests. Milk chocolate might not do the job.

However, this guilty pleasure has a limit.

Specifically, only 6.7 grams of chocolate per day (or 0.23 ounces) represents the ideal amount, according to results from the Moli-sani Project, one of the largest health studies ever conducted in Europe. For comparison, a standard-sized Hershey's Kiss is about 4.5 grams (though the classic Kiss is not made of dark chocolate) and one Hershey's dark chocolate bar is about 41 grams (so a recommendation might be one of those weekly).

Chronic inflammation of tissues in the circulatory system is a risk factor for cardiovascular disease, such as myocardial infarction or stroke. So doctors strive to keep patients' inflammation under control. One marker for inflammation in the blood is called C-reactive protein.

The researchers found a relationship between dark chocolate intake and levels of this protein in the blood of 4,849 subjects in good health and free of risk factors (such as high cholesterol or blood pressure, and other parameters). The findings are detailed in the latest issue of the Journal of Nutrition.

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5 Myths About Wind Energy

Analysts estimate it would take at least 260,000 turbines, each 300 feet tall, to meet the United States' electricity needs. These turbines are in King City, Mo.
Credit: MU Cooperative Media Group, Steve Morse photo

From Live Science:

Editor's Note: Each Wednesday LiveScience examines the viability of emerging energy technologies — the power of the future.

Wind energy might be the simplest renewable energy to understand. Yet there are misconceptions about what makes the wind industry turn.

The United States now has nearly 17,000 megawatts of wind power installed, which can supply about 1.2 percent of the nation's demand for electricity, according to a recent report from the Department of Energy (DOE).

With these numbers projected to grow in the coming years, it might be good to be aware of a few myths that are blowing in the wind.

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Saturn's Rings May Be Billions of Years Old

From Universe Today:

Saturn's enigmatic rings may be much older and also much more massive than previously thought, according to a new study. Because Saturn's rings look so clean and bright, it was thought the rings were younger than the planet itself, which is estimated to be about 4.5 billion years old. But using data from the Cassini spacecraft's UVIS (Ultraviolet Imaging Spectrograph) instrument, Principal Investigator Dr. Larry Esposito and his team used computer simulations to study colliding particles in Saturn's rings and their erosion by meteorites. Their results support the possibility that Saturn's rings formed billions of years ago, perhaps at the time when giant impacts excavated the great basins on the Moon. The findings also suggest that giant exoplanets may also commonly have rings.

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More Fears On Global Warming

Researchers believe the Arctic Ocean seabed is thawing in patches and releasing greenhouse gases

New Global Warming Threat As Scientists Discover Massive Methane 'Time Bomb' Under The Arctic Seabed -- Daily Mail

Global warming could rapidly accelerate as millions of tons of methane escape from beneath the Arctic seabed, scientists warned today.

Huge deposits of the greenhouse gas - 20 times more potent than carbon dioxide - are rising to the surface as the Arctic region heats up, according to preliminary findings.

Researchers found massive stores of sub-sea methane in several areas across thousands of square miles of the Siberian continental shelf and observed the gas bubbling up from the sea floor through 'chimneys', according to newspaper reports.

The researchers believe escaping sub-sea methane is connected to rises in temperatures in the Arctic region.

One of the expedition leaders, Orjan Gustafsson, of Stockholm University in Sweden, said researchers had found 'an extensive area of intense methane release'.

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UK Experts Say Stonehenge Was Place Of Healing -- Summary Of News Reports

A view of Stonehenge at sunrise. Two bluestone fragments found at Britain's prehistoric Stonehenge monument could prove that the mysterious stone circle was once a centre of healing, archaeologists said Monday. (AFP/File/Carl de Souza)

UK Experts Say Stonehenge Was Place of Healing
-- ABC News

The first excavation of Stonehenge in more than 40 years has uncovered evidence that the stone circle drew ailing pilgrims from around Europe for what they believed to be its healing properties, archaeologists said Monday.

Archaeologists Geoffrey Wainwright and Timothy Darvill said the content of graves scattered around the monument and the ancient chipping of its rocks to produce amulets indicated that Stonehenge was the primeval equivalent of Lourdes, the French shrine venerated for its supposed ability to cure the sick.

An unusual number of skeletons recovered from the area showed signs of serious disease or injury. Analysis of their teeth showed that about half were from outside the Stonehenge area.

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More News On Stonehenge

Stonehenge was built in 2300 BC as a 'prehistoric Lourdes', first dig in 44 years reveals -- Daily Mail
Stonehenge was ancient healing site: experts -- AFP
Stonehenge may have been pilgrimage site for sick -- Yahoo News/Reuters
Dig hints at Stonehenge’s healing role -- MSNBC
Stonehenge may have been an ancient Lourdes -- LA Times
Archeologists 'solve' mystery of Stonehenge -- CNews Science
Stonehenge was place of healing: experts -- The West

CERN'S Large Hadron Collider Shut Down Till Spring 2009 -- News Updates

A technician walks under the core magnet of the CMS (Compact Muon Solenoid) experiment at the European Organization for Nuclear Research CERN (Centre Europeen de Recherche Nucleaire) in the French village of Cessy, near Geneva, in this March 22, 2007 file photo. REUTERS/Denis Balibouse

More Delays For LHC: Particle Collider's Tune-Up
To Last Until 2009 -- Scientific American

The world's largest physics experiment is on hold until spring while scientists and engineers try to figure out what caused a helium leak into the tunnel deep beneath the Large Hadron Collider, its operator says.

Making the tunnel warm enough for humans, then giving them the time to inspect the magnets blamed for the Sept. 19 leak, will take three to four weeks, the European Organization for Nuclear Research (CERN) says in a statement. CERN believes a faulty electrical connection between two magnets that will guide protons in planned collision studies is behind the leak.

After the magnets are inspected and fixed, the collider must then undergo a scheduled winter maintenance, CERN says.

CERN Director General Robert Aymar admits that the delay "is undoubtedly a psychological blow."

“Nevertheless … I have no doubt that we will overcome this setback with the same degree of rigor and application,” Aymar says.

When we spoke to Judy Jackson of Fermilab yesterday, she told us that "there inevitably are going to be setbacks along the way — it's part of the process" of starting up a particle accelerator. You can read more about what she and theoretical physicist Sean Carroll had to say about the unexpected delays here.

More News On CERN's Atom Smasher

Large Hadron Collider shuts down early for the winter -- Science News
"Big Bang" collider to restart in spring 2009 -- Reuters
Collider halted until next year -- BBC News
Repairs and onset of winter mean Europe's atom smasher on ice until spring -- CNews Science
Atom smasher will have to wait until spring -- CNN Science
Supercollider shut down until spring -- MSNBC
CERN says collider will have to wait until spring -- International Herald Tribune
Damage to atom smasher forces 2-month halt -- LA Times
'Big Bang Machine' to Be Shut Down Until Spring -- FOX News
Collider halted till next year over magnets problem -- Independent
Faulty Transformer Sidelines Atom Smasher -- CBS News
Atom-smasher shut down for two months after malfunction -- China View
Atom-smasher findings out soon -- News 24
Melted wire may shut down collider until '09 -- San Francisco Chronicle
LHC meltdown before first collision -- Nature News
The Large Hadron Collider News -- Nature News

Rescue Shuttle At Launch Pad For Hubble Trip

Hubble Telescope

From CNews:

CAPE CANAVERAL, Fla. (AP) — In an unprecedented step, a space shuttle was moved to the launch pad Friday for a trip NASA hopes it will never make — a rescue mission.

The shuttle Endeavour is on standby in case the seven astronauts who go up on Atlantis next month need a safer ride home.

Atlantis and its crew are headed into space for one last repair job on the 18-year-old Hubble Space Telescope. It’s a venture that was canceled when first proposed a few years ago because it was considered too dangerous.

The risk is this: If Atlantis suffers serious damage during launch or in flight, the astronauts will not be at the international space station, where they could take refuge for weeks while awaiting a ride home. They would be stranded on their spacecraft at the Hubble, where NASA estimates they could stay alive for 25 days. Air would be the first to go.

Endeavour and four more astronauts would need to blast off on a rescue flight as soon as NASA determined Atlantis was too damaged to fly home.

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Duelling Banjos Ain't Got Nuthin On Duelling Birdsong

Birds' Harmonious Duets Can Be 'Aggressive Audio Warfare,'
Study Finds -- eScienceNews

Researchers reporting in the September 4th Current Biology, a Cell Press publication, have new insight into the motivating factors that drive breeding pairs of some tropical bird species to sing duets. Those duets can be so closely matched that human listeners often mistake them for solos. They now report evidence that male and female rufous-and-white wren partners sing as a way of keeping track of one another when they are apart. But the duets, as pleasant as they may sound, also have a more sinister purpose. During confrontations with rivals, the wrens essentially duel one another with their duets.

The discovery was made possible by sophisticated sound recording technology developed by the University of Windsor and Cornell University team. That system, including eight microphones recording to a single laptop computer, allowed them to triangulate the duetting birds' positions in the dense tropical forests of Costa Rica where they live.

"Your first impression after you hear the duet of a pair of tropical birds is one of great harmony and cooperation," said Daniel Mennill of the University of Windsor. "Their duets require coordination and synchronization, and my multi-microphone recordings confirm that birds do coordinate their activities by performing duets. But there is a darker side to duetting; tropical birds also perform duets in very aggressive contexts, and respond with special aggression to rival individuals of the same sex. Their voices are beautiful harmonies, but they're also aggressive audio warfare."

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The US Has No Option But To Use Russia's Soyuz Craft

The Soyuz TMA-9 crew capsule closes in on the space station with Earth as a backdrop, as seen in this September 2006 photo taken from the station. TMA-9 is due to become the longest-serving Soyuz craft in space history, with its landing coming 214 days after launch.

From Space Travel:

After 2010, the United States will likely be unable to deliver its astronauts to the International Space Station (ISS) on its own. For several years Russia's Soyuz craft will remain the only vehicle available to do that, and the U.S. may find it hard to do without Russian cooperation.

During Senate hearings on Wednesday, September 17, William Burns, Under Secretary of State for Political Affairs, said the U.S. is depending on Russia for its ISS flights and that the Bush administration was in support of a Congressional amendment to exempt Russia's Soyuz vehicles from existing sanctions.

On Tuesday, September 23, the U.S. Congress will consider an amendment, supported by President George W. Bush, allowing the National Aeronautics and Space Administration (NASA) to buy Russian Soyuz spacecraft and launch services.

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Wind Power's Impact On Climate

From The New York Times:

Q. Could a plan being explored to use wind to produce a third of the power for New York City affect weather systems?

A. The usual objections raised to wind farming involve aesthetic issues, expense, noise and fears of danger to wildlife, and the issue of weather impact from wind farming has not been conclusively studied.

There has been at least one preliminary study of wind farming that suggested the possibility of an adverse effect on local weather systems from a large wind farm with many rotors in one area. But the researchers also suggested that potential problems could be ameliorated by redesigning the rotors to produce less turbulence.

The study, published in October 2004 in The Journal of Geophysical Research, used a hypothetical model of a wind farm much larger than any that had been built: 10,000 turbines, with rotor blades 165 feet long, in a 60-by-60-mile grid in north-central Oklahoma.

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7,000 Years Ago, Neolithic Optical Art Flourished

Earliest Op-Art? Little is known about the Cucuteni-Trypillians. Excavation data revealed that they lived in proto-cities in what is now Romania, Ukraine and the Republic of Moldova. Their op-art like pottery, as shown in the piece here, was dominated by repeating lines, circles and spirals.

From MSNBC/Science:

An egalitarian Neolithic Eden filled with unique, geometric art flourished some 7,000 years ago in Eastern Europe, according to hundreds of artifacts on display at the Vatican.

Running until the end of October at the Palazzo della Cancelleria in the Vatican, the exhibition, "Cucuteni-Trypillia: A Great Civilization of Old Europe," introduces a mysterious Neolithic people who are now believed to have forged Europe's first civilization.

Little is known about these people — even their name is wrapped in mystery.

Archaeologists have named them "Cucuteni-Trypillians" after the villages of Cucuteni, near Lasi, Romania and Trypillia, near Kiev, Ukraine, where the first discoveries of this ancient civilization were made more than 100 years ago.

The excavated treasures — fired clay statuettes and op art-like pottery dating from 5000 to 3000 B.C. — immediately posed a riddle to archaeologists.

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Neanderthals Had A Taste For Seafood

The Gibraltar caves from the sea. All have evidence of Neanderthal occupation.
Photograph: Natural History Museum, London

From The Guardian - Science:

The last of the Neanderthals feasted on warmed mussels, baby seals and washed-up dolphins, according to fossil hunters working in ancient seaside caves in Gibraltar.

Excavations in the giant Gorham's and Vanguard caves on the Rock's eastern flank unearthed flint stone tools and remnants of seafood meals alongside the long-dead embers of hearths, which have been carbon-dated to around 28,000 years ago.

The findings suggest that Neanderthals who lived in the caves exploited the plentiful resources that the Mediterranean shoreline provided, and may help explain why groups living in Gibraltar clung on to life while those elsewhere became extinct around 7,000 years earlier.

An international team led by Chris Stringer at the Natural History Museum in London and Clive Finlayson at the Gibraltar Museum uncovered bones and shells that had clearly been butchered with primitive cutting and stripping tools.

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Continental Clash Cooled The Climate

From Science News:

The collision between India and Asia set off events that likely caused long-term cooling in Earth’s climate

When the tectonic plate carrying India slammed into Asia about 50 million years ago, the ensuing geological changes triggered a long-term cooling trend. That trend later enabled Antarctic ice sheets to grow, a new study suggests.

Before the collision, volcanoes along the rim of southern Asia spewed immense quantities of carbon dioxide into the atmosphere. Much of that planet-warming greenhouse gas came from seafloor, carbonate-rich sediments that were shoved below Asia by tectonic movements, says Dennis V. Kent, an earth scientist at Rutgers University in Piscataway, N.J. Carbon in those sediments soon reappeared in the atmosphere as the carbon dioxide spewing from volcanoes. When the India-Asia collision removed those seafloor sediments, that source of carbon dioxide disappeared, Kent and his colleagues argue in an upcoming Proceedings of the National Academy of Sciences.

Simultaneously, erosion of rocks on the Indian subcontinent — in particular, the chemical weathering of a large amount of basaltic rocks formed from volcanic eruptions just a few million years earlier — consumed large volumes of carbon dioxide. That double whammy, the researchers speculate, caused atmospheric concentrations of carbon dioxide to plummet, cooling Earth significantly.

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Picture For Today

Image of Sun and Moon at the North Pole: Real or Work of Art?

(Click To Enlarge)

Has this image been showing up in your email inbox, forwarded on from excited friends? Along with it may be the following words: "This is the sunset at the North Pole with the moon at its closest point. And you can also see the sun below the moon. An amazing photo and one not easily duplicated. You may want to save this and pass it on to others." It is a beautiful picture, but is it a real photo?

The answer is here.

New Test Shows If You Are A Shopaholic

From Live Science:

A new shopaholic test could tell if you should you leave your credit card at home when heading out to the mall.

The test makes it clear that there's shopping and then there's over-the-top purchasing that can wreak havoc on a person's life. People who become preoccupied with buying stuff and repeatedly spend money on items, regardless of need, are commonly referred to as shopaholics. Scientists call it compulsive buying.

The new test was administered along with a survey that revealed that nearly 9 percent of a sample of 550 university staff members, mostly women, would be considered compulsive buyers. Past studies had put the incidence of compulsive buying somewhere between 2 percent and 8 percent 15 years ago, and more recently, at nearly 6 percent, the researchers say. Other research has found men are just as addicted to shopping as women.

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Super Atoms

This superatom of aluminum and hydrogen is surprisingly stable.

Small, But Super -- Science News

These 'atoms' can't leap tall buildings in a single bound, but they have special powers

Gold comes in many colors. Since ancient times, glass artists and alchemists alike have known how to grind the metal into fine particles that would take on hues such as red or mauve. At scales even smaller, clusters of just a few dozen atoms display even more outlandish behavior. Gold and certain other atoms often tend to aggregate in specific numbers and highly symmetrical geometries, and sometimes these clusters can mimic the chemistry of single atoms of a completely different element. They become, as some researchers say, superatoms.

Recently researchers have reported successes in creating new superatoms and deciphering their structures. In certain conditions, even familiar molecules such as buckyballs — the soccer-ball–shaped cages made of 60 carbon atoms — unexpectedly turn into superatoms.

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Return Of The ’70s Weirdos

From Newsweek:

That photo of 11 weirdos in '70s clothes you may have seen on the Internet really is the original Microsoft team, snapped Dec. 7, 1978, on the eve of the company's move from Albuquerque, N.M., to Seattle. Almost 30 years later, a few weeks before Bill Gates's departure from Microsoft, the group (looking better) reconvened.

Bob Greenberg (center of old photo, in red sweater), then a programmer and now a tech and financial consultant, had won a photo portrait in a contest and used it to commemorate the soon-to-be disrupted group. The picture was shot in a shopping mall.

"The photo really does capture a moment of time and the spirit we had in the office," says cofounder Paul Allen (bottom right), now a media and sports mogul. Signing up for a little company in the then unknown field of PC software was a crazy leap of faith. "I could have had an office and a title from a respectable company—but I thought this would take off," says programmer Gordon Letwin (second row, right). He stuck around Microsoft until taking leave in 1993. Bob O'Rear (second row left, above Gates), the most experienced of the group (he'd been a NASA engineer, now he's a cattle rancher), concurs—sort of. "My concept of success for us was that someday we'd have 40 people or so."

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Late Nights And Disease

From Science News:

It took only one night of too little sleep to change blood levels of an inflammation-causing protein in women volunteers

Staying up late makes for a swell time, but not in a good way.

A finding appearing in the Sept. 15 Biological Psychiatry offers more evidence that lack of sleep can lead to inflammation and disease.

After one night of too little sleep, women volunteers in a study by researchers at the University of California, Los Angeles had higher levels of a chemical that triggers inflammation than after a full night of sleep.

Previous research with animals has shown that staying up all night can trigger stress reactions, including elevating some markers of inflammation. Inflammation can lead to disease. But people usually experience milder sleep deprivation, missing out on a few hours of sleep each night.

The increase in markers of inflammation after mild sleep deprivation shows how stressful even this more common sleep loss is, comments Amita Sehgal, a neuroscientist and Howard Hughes Medical Institute investigator at the University of Pennsylvania.

“The fact that this happens in a scenario that more commonly is experienced by people indicates that this is more of a health concern than previously thought,” Sehgal says.

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Strongest Material Ever Tested

From Technology Review:

Graphene, praised for its electrical properties, has been proven the strongest known material.

Materials scientists have been singing graphene's praises since it was first isolated in 2005. The one-atom-thick sheets of carbon conduct electrons better than silicon and have been made into fast, low-power transistors. Now, for the first time, researchers have measured the intrinsic strength of graphene, and they've confirmed it to be the strongest material ever tested. The finding provides good evidence that graphene transistors could take the heat in future ultrafast microprocessors.

Jeffrey Kysar and James Hone, mechanical-engineering professors at Columbia University, tested graphene's strength at the atomic level by measuring the force that it took to break it. They carved one-micrometer-wide holes into a silicon wafer, placed a perfect sample of graphene over each hole, and then indented the graphene with a sharp probe made of diamond. Such measurements had never been taken before because they must be performed on perfect samples of graphene, with no tears or missing atoms, say Kysar and Hone.

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Earth At Night

(Click To Enlarge)

Cities At Night, An Orbital Tour Around The World

Migraine Science

Why Migraines Strike -- Scientific American

Biologists finally are unraveling the medical mysteries of migraine, from aura to pain

For the more than 300 million people who suffer migraines, the excruciating, pulsating pain that characterizes these debilitating headaches needs no description. For those who do not, the closest analogous experience might be severe altitude sickness: nausea, acute sensitivity to light, and searing, bed-confining headache. “That no one dies of migraine seems, to someone deep into an attack, an ambiguous blessing,” wrote Joan Didion in the 1979 essay “In Bed” from her collection The White Album.

Historical records suggest the condition has been with us for at least 7,000 years, yet it continues to be one of the most misunderstood, poorly recognized and inadequately treated medical disorders. Indeed, many people seek no medical care for their agonies, most likely believing that doctors can do little to help or will be downright skeptical and hostile toward them. Didion wrote “In Bed” almost three decades ago, but some physicians remain as dismissive today as they were then: “For I had no brain tumor, no eyestrain, no high blood pressure, nothing wrong with me at all: I simply had migraine headaches, and migraine headaches were, as everyone who did not have them knew, imaginary.”

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Cancer Stem Cells -- The Root Of All Evil?

From The Economist:

Cancer may be caused by stem cells gone bad. If that proves to be correct, it should revolutionise treatment

MUCH of medical research is a hard slog for small reward. But, just occasionally, a finding revolutionises the field and cracks open a whole range of diseases. The discovery in the 19th century that many illnesses are caused by bacteria was one such. The unravelling of Mendelian genetics was another. It now seems likely that medical science is on the brink of a finding of equal significance. The underlying biology of that scourge of modern humanity, cancer, looks as though it is about to yield its main secret. If it does, it is possible that the headline-writer’s cliché, “a cure for cancer”, will come true over the years, just as the antibiotics that followed from the discovery of bacteria swept away previously lethal infectious diseases.

The discovery—or, rather, the hypothesis that is now being tested—is that cancers grow from stem cells in the way that healthy organs do. A stem cell is one that, when it divides, produces two unequal daughters. One remains a stem cell while the other multiplies into the sorts of cells required by its organ. This matters for cancer because, at the moment, all the cells of a tumour are seen as more or less equivalent. Therapies designed to kill them do not distinguish between them. Success is defined as eliminating as many of them as possible, so those therapies have been refined to do just that. However, if all that the therapies are doing is killing the descendants of the non-stem-cell daughters, the problem has not been eliminated. Instead of attacking the many, you have to attack the few. That means aiming at the stem cells themselves.

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Could Life Evolve On The Internet?

From Wired:

If principles of life are universal, could life emerge on the internet?

I posed the question to evolutionary dynamicist Martin Nowak of Harvard University, developer of a mathematical model of evolution's origins, the period during which unique chemical structures experienced mutation and selection that guided them toward replication -- and thus to life.

Though Nowak's focus is biological life, the principles seem broadly applicable, perhaps even to configurations of electrons coursing through the Internet's silicon and fiber-optic substrate.

"Computer viruses are some form of evolution," said Nowak.

"Viruses fulfill replication, mutation and selection -- but people don't consider them to be alive, because they think life has to be made of chemicals," said Irene Chen, a Harvard systems biologist who specializes in early biomolecules.

"We can definitely make things in a computer that fulfill the criteria for life that NASA uses, except it's not chemical," she added, and cited the AVIDA program at Michigan State.

Indeed, computer viruses and e-mail spam have arguably displayed evolutionary characteristics. But Nowak was more interested in the forms of social life produced by the internet. "It's already an interesting phenomenon that allows people to function in a different way," he said. "It leads to very different properties than what were out there before."

Read more ....

Explosion From Edge of Universe Seen

From Space.com:

An explosion originating near the edge of the universe has been seen by an orbiting NASA telescope. The burst of gamma rays is the farthest such event ever detected.

The blast, designated GRB 080913, arose from an exploding star 12.8 billion light-years away. It was detected by the Swift satellite and announced today.

"This is the most amazing burst Swift has seen," said the mission's lead scientist Neil Gehrels of the Goddard Space Flight Center in Greenbelt, Md. "It's coming to us from near the edge of the visible universe."

The universe is thought to be 13.7 billion years old. Seeing something so far away is effectively like looking back in time. The burst took 12.8 billion years to reach Earth and so is a snapshot of activity from when the universe was just one-seventh its present age.

"This burst accompanies the death of a star from one of the universe's early generations," says Patricia Schady of the Mullard Space Science Laboratory at University College London, who is organizing Swift observations of the event.

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Emergence Of Agriculture In Prehistory Took Much Longer, Genetic Evidence Suggests

A new mathematical model shows how plant agriculture actually began much earlier than first thought. It also shows that useful gene types could have actually taken thousands of years to become stable. (Credit: iStockphoto/Tomas Bercic)

From Science Daily:

ScienceDaily (Sep. 20, 2008) — Researchers led by Dr Robin Allaby of the University of Warwick’s plant research arm Warwick HRI have found evidence that genetics supports the idea that the emergence of agriculture in prehistory took much longer than originally thought.

Until recently researchers say the story of the origin of agriculture was one of a relatively sudden appearance of plant cultivation in the Near East around 10,000 years ago spreading quickly into Europe and dovetailing conveniently with ideas about how quickly language and population genes spread from the Near East to Europe. Initially, genetics appeared to support this idea but now cracks are beginning to appear in the evidence underpinning that model

Now a team led by Dr Robin Allaby from the University of Warwick have developed a new mathematical model that shows how plant agriculture actually began much earlier than first thought, well before the Younger Dryas (the last “big freeze” with glacial conditions in the higher latitudes of the Northern Hemisphere). It also shows that useful gene types could have actually taken thousands of years to become stable.

Read more ....

Astrophysicists 'Weigh' Galaxy's Most Massive Star

From Science Daily:

ScienceDaily (Sep. 21, 2008) — Theoretical models of stellar formation propose the existence of very massive stars that can attain up to 150 times the mass of our Sun.

Until very recently, however, no scientist had discovered a star of more than 83 solar masses. Now an international team of astrophysicists, led by Université de Montréal researchers from the Centre de recherche en astrophysique du Québec (CRAQ), has found and "weighed" the most massive star to date.

Olivier Schnurr, Jules Casoli and André-Nicolas Chené, all graduates of the Université de Montréal, and professors Anthony F. J. Moffat and Nicole St-Louis, successfully "weighed" a star of a binary system with a mass 116 times greater than that of the Sun, waltzing with a companion of 89 solar masses, doubly beating the previous record and breaking the symbolic barrier of 100 solar masses for the first time.

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Who Discovered The Telescope?

Controversy Over Telescope Origin -- BBC Science

New evidence suggests the telescope may have been invented in Spain, not the Netherlands or Italy as has previously been assumed.

The findings, outlined in the magazine History Today, suggest the telescope's creator could have been a spectacle-maker based in Gerona, Spain.

The first refracting telescopes were thought to have appeared in the Netherlands in 1608.

But the first examples may actually have been made for Spanish merchants.

The inventor, according to historian Nick Pelling, could have been a man called Juan Roget, who died between 1617 and 1624.

The idea subsequently travelled north to the Netherlands, where, in 1608, three separate individuals claimed the invention as their own.

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Futurologist Predicts The Trends That Will Shape The Next 50 Years

From The Telegraph:

What's going out and what's coming in?

2010
Going out: • Letter writing • The idea of 'normal' weather • Personal privacy • Ashtrays • Milkmen

Coming in: •Truth sensors • Wearable computers • Dream machines

2015
Going out: • Getting lost • Thank-you letters • Landline telephones

Coming in: • A human settlement on the moon • Disposable mobile phones • Intelligent cosmetics • Hotels just for sleeping

2020
Going out: • Post offices • Free parking • Survivors of the First World War • Unfenced beaches • Secretaries • DVDs • Democracy in Russia • Telephone directories • The idea of a proper retirement • An independent Taiwan • State pensions •

Coming in: • Surgery carried out by robots • Artificial eyes

2025
Going out: • Proper spelling • Driving on the road for free • Desktop computers • Work-free weekends • The Maldives • Paris Hilton

Coming in: • Hydrogen-based fuel stations • Offshore prisons • 'Mindwipes' to remove the memory of a bad day at the office • Sensory internet

2030
Going out • Reality TV • The Great Barrier Reef • Trade unions • Inheritance tax • Taking a proper lunch • Wrinkles, thanks to cosmetic surgery

Coming in • Robots to take care of young children • Virtual holidays • A ladder into space • Artificial memory enhancers • Self-driving cars • Artificial bacteria

2035
Going out: • Children playing without supervision • Coins • Oil • Microsoft • The middle class • Low-cost travel • Bangladesh

Coming in: • Self-repairing roads • Diets based on your individual genome • 3-D printers • Virtual reality windows

2040
Going out: • Banknotes and wallets • Petrol engines • Addiction and deafness - both will be cured • National currencies • Free public spaces • The idea of saying 'sorry' • The European Union

Coming in: • Factories in space • A single global currency • Wallpaper that plays videos • Countries used entirely as prisons

2045
Going out: • Any remaining monopolies • Ties • The British monarchy • Natural childbirth

Coming in: • Individual taxes based on the amount you pollute • Invisibility cloaks • A man on Mars

2050
Going out: • Household chores • Belgium as a unified country • Incurable blindness • Google • Any survivors of the Second World War

Coming in:

• Tiny robots for pest control • Brain transplants • Downloading of memories • Global ID cards, elections and taxes • Warp drive • Robot policemen

and beyond...

Going out: • The idea of ugliness • Nation states • Death - unless you want it

Coming in: • Artificial brains • Mining asteroids • Web 4.0 • Clothing that monitors and controls your stress levels

Where Is Human Evolution Heading?

From U.S. News And World Report:

The race's DNA is changing faster than ever; what it means for our descendants

If you judge the progress of humanity by Homer Simpson, Paris Hilton, and Girls Gone Wild videos, you might conclude that our evolution has stalled—or even shifted into reverse. Not so, scientists say. Humans are evolving faster than ever before, picking up new genetic traits and talents that may help us survive a turbulent future.

Much remodeling has gone on since the dawn of agriculture about 10 millenniums ago. "People who lived 10,000 years ago were much more like Neanderthals than we are like those people," says John Hawks, a professor of anthropology at the University of Wisconsin. "We've changed."

Hawks is among a growing number of scientists who are using whole-genome sequencing and other modern technologies to zero in on just how we've changed. Their research is helping illuminate not only how humans became what we are but also where we might be headed. For instance, some scientists speculate that changes in human mating patterns may be contributing to the increase in autism. Others track how humans have morphed in response to changing circumstances, including enhanced abilities to metabolize sugar and fight disease. Some people are genetically more resistant to the HIV virus, for instance, and that trait should become more common in the future, as those people are more likely to survive and have children who are resistant. Yet for some people, the makeover isn't big enough or fast enough. Some parents have started using DNA testing to choose the genetic makeup of their children, rejecting embryos with inherited flaws or embracing those with desired traits—such as being the right sex.

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Why Presents Become Less Exciting As You Get Older

From The Independent:

The reason children tear open their Christmas presents in a frenzy of dawn excitement while grandparents leave theirs until after lunch comes down to how the ageing brain handles rewards. Scientists have discovered that a chemical in the brain governing the delivery and feeling of reward is altered physically as a person grows old, which explains why opening presents becomes less exciting.

When young people are involved in receiving prizes their brains become highly activated before and after being given them. This contrasts with the chemical activation in the brains of older people, said researchers at the US National Institute for Mental Health .

"Knowing how key brain circuits change as we get older may help us to rise to the public health challenge of ageing successfully," said Karen Berman, whose study is published in the journal Proceedings of the National Academy of Sciences.

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Meet Wilma: The Face Of Neanderthal Woman Revealed For The First Time

From The Daily Mail Online:

Artists and scientists have created the first model of a Neanderthal based in part on ancient DNA evidence.

She has been put together using analysis of DNA from 43,000-year-old bones that had been cannibalised.

The model has been nicknamed Wilma after she was found to have red-hair like the Flintstones character.

The findings had suggested that at least some Neanderthals would have had red hair, pale skin, and possibly freckles.

Created for an October 2008 National Geographic magazine article, Wilma has a skeleton made from replicas of pelvis and skull bones from Neanderthal females.

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CERN's Large Hadron Collider (LHC) Broke Down Last Week -- An Investigation By AP Broke The Story For The Public To Know

Transformer Glitch Shuts Down Biggest Atom Smasher -- AP

GENEVA (AP) — The world's largest particle collider malfunctioned within hours of its launch to great fanfare, but its operator didn't report the problem for a week.

In a statement Thursday, the European Organization for Nuclear Research reported for the first time that a 30-ton transformer that cools part of the collider broke, forcing physicists to stop using the atom smasher just a day after starting it up last week.

The faulty transformer has been replaced and the ring in the 17-mile circular tunnel under the Swiss-French border has been cooled back down to near zero on the Kelvin scale — minus 459.67 degrees Fahrenheit — the most efficient operating temperature, said a statement by CERN, as the organization is known.

When the transformer malfunctioned, operating temperatures rose from below 2 Kelvin to 4.5 Kelvin — extraordinarily cold by most standards, but warmer than the normal operating temperature.

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Excellent commentary from Greg Laden's Blog.

CERN: Damage To New Collider Forces 2-Month Halt

In this file photo dated May 31, 2007, part of the LHC (Large Hadron Collider) is seen in its tunnel at the CERN (European Center for Nuclear Research) near Geneva, Switzerland. The world's largest atom smasher, which was launched with great fanfare earlier this month, has been damaged worse than previously thought and will be out of commission for at least two months, its operators said Saturday, Sept. 20, 2008. (AP Photo/Keystone, Martial Trezzini, File)

From Yahoo News/AP:

GENEVA - The world's largest atom smasher — which was launched with great fanfare earlier this month — has been damaged worse than previously thought and will be out of commission for at least two months, its operators said Saturday.

Experts have gone into 17-mile (27-kilometer) circular tunnel housing the Large Hadron Collider under the Swiss-French border to examine the damage that halted operations about 36 hours after its Sept. 10 startup, said James Gillies, spokesman for CERN, the European Organization for Nuclear Research.

"It's too early to say precisely what happened, but it seems to be a faulty electrical connection between two magnets that stopped superconducting, melted and led to a mechanical failure and let the helium out," Gillies told The Associated Press.

Gillies said the sector that was damaged will have to be warmed up well above the absolute zero temperature used for operations so that repairs can be made — a time-consuming process.

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More News On CERN

Atom-smasher out of action for two months: CERN -- AFP
CERN: Damage to new collider forces 2-month halt -- San Francisco Chronicle
Fault shuts Large Hadron Collider for two months -- The Guardian
Hadron Collider forced to halt -- BBC
CERN delays atom-smashing over magnet fault -- Times Online

Video - On Dancing Air: The Story of Wind Power

A very cool video from Live Science. The link is here.

Can 'Small Wind' Reap Big Rewards?

From CNN:

LONDON, England (CNN) -- Micro wind turbines are beginning to pop up all over our urban and rural landscapes. But is it worth investing your hard-earned cash in your very own wind machine? In short, it depends. Take a look at our quick guide to see if "small wind" could help you reduce your energy bills and your carbon footprint.

What is available?

There are plenty of small wind turbines on the market. Most are the more traditional horizontal axis -- which have two or three blades. But some are vertical-axis which look a bit like the beaters on a food mixer. Micro turbines can be as small as 100 to 500 watts and can be mounted on the side of a building. Larger models -- 2.5 kilowatts to 50 kilowatts -- need to be mast-mounted.

How much do they cost?

Prices vary a lot. One kilowatt models range from $1500 to $3000. More powerful models will cost considerably more. A six kilowatt machine will set you back $45,000 and 15 kilowatts a hefty $70,000. Prices generally include installation but other essential kit -- you will need a battery and an inverter if you are off grid --may not be included. With regular maintenance, turbines can last over 20 years.

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Planet Is Running Out Of Clean Water, New Film Warns

From CNN:

(CNN) -- One sixth of the world's population does not have access to clean drinking water. More than 2 million people, most of them children, die each year from water-borne diseases.

Water-related problems aren't restricted to the developing world. A harmful pesticide, banned by many European countries, remains widely used in the United States, where it runs into rivers and streams.

And one expert estimates California's water supply will run out in 20 years.

These sobering statistics come from "FLOW," a new documentary film about the world's dwindling water supply. The filmmakers and their sources argue a combination of factors, including drought and skyrocketing demand, have created a looming global crisis that threatens the long-term survival of the human race.

After premiering in January at the Sundance Film Festival, "FLOW" opened September 12 in New York and Los Angeles, California, and expands to more cities this week. The New York Times called the documentary "less depressing than galvanizing, an informed and heartfelt examination of the tug of war between public health and private interests."

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World Faces Global Pandemic Of Antibiotic Resistance, Experts Warn

All antibiotic use "uses up" some of the effectiveness of that antibiotic, diminishing the ability to use it in the future, experts warn, and antibiotics can no longer be considered as a renewable source. (Credit: iStockphoto/David Marchal)

From Science Daily:

ScienceDaily (Sep. 18, 2008) — Vital components of modern medicine such as major surgery, organ transplantation, and cancer chemotherapy will be threatened if antibiotic resistance is not tackled urgently, warn experts on bmj.com.

A concerted global response is needed to address rising rates of bacterial resistance caused by the use and abuse of antibiotics or "we will return to the pre-antibiotic era", write Professor Otto Cars and colleagues in an editorial.

All antibiotic use "uses up" some of the effectiveness of that antibiotic, diminishing the ability to use it in the future, write the authors, and antibiotics can no longer be considered as a renewable source.

They point out that existing antibiotics are losing their effect at an alarming pace, while the development of new antibiotics is declining. More than a dozen new classes of antibiotics were developed between 1930 and 1970, but only two new classes have been developed since then.

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The 10 Worst U.S Natural Disasters

From Live Science:

Throughout modern history, the failure to prepare and cope with Mother Nature has resulted in catastrophic consequences, from wrecked economies to thousands of lives lost. Even as modern technology improves forecasts, Nature still gets the upper hand every now and then. Considering both human and economic costs, we present 10 of the worst all-time disasters to strike the United States. - Tuan C. Nguyen

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Skeleton May Be Early TB Victim By LiveScience Staff

A close-up of a skeleton dating to A.D. 302 that archaeologists say bears evidence of TB. Credit: Sarah Mitchell/University of York

From Live Science:

The skeleton of a man discovered in a shallow grave on what is now a college campus in England could belong to one of Britain’s earliest victims of tuberculosis.

Radiocarbon dating suggests the man died in the fourth century, around A.D. 302, when Romans ruled the region. He was interred in a shallow scoop in a flexed position, on his right side.

The man, aged 26 to 35 years old, suffered from iron deficiency anemia during childhood and at 5-foot, 4-inches, was shorter than average for Roman males.

The first known case of TB in Britain is from the Iron Age (300 B.C.), but cases in the Roman period are fairly rare, and largely confined to the southern half of England. TB is most frequent from the 12th century A.D. in England when people were living in urban environments. So the skeleton may provide crucial evidence for the origin and development of the disease in this country.

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So Much For Trends Towards Global Warming

Arctic Sea Ice Melt Season Officially Over; Ice Up Over 9% From Last Year -- Watts Up With That

We have news from the National Snow and Ice Data Center (NSIDC). They say: The melt is over. And we’ve added 9.4% ice coverage from this time last year. Though it appears NSIDC is attempting to downplay this in their web page announcement today, one can safely say that despite irrational predictions seen earlier this year, we didn’t reach an “ice free north pole” nor a new record low for sea ice extent.

Here is the current sea ice extent graph from NSIDC as of today, notice the upturn, which has been adding ice now for 5 days:



Here is what they have to say about it:

The Arctic sea ice cover appears to have reached its minimum extent for the year, the second-lowest extent recorded since the dawn of the satellite era. While above the record minimum set on September 16, 2007, this year further reinforces the strong negative trend in summertime ice extent observed over the past thirty years. With the minimum behind us, we will continue to analyze ice conditions as we head into the crucial period of the ice growth season during the months to come.

Despite overall cooler summer temperatures, the 2008 minimum extent is only 390,000 square kilometers (150,000 square miles), or 9.4%, more than the record-setting 2007 minimum. The 2008 minimum extent is 15.0% less than the next-lowest minimum extent set in 2005 and 33.1% less than the average minimum extent from 1979 to 2000.

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Why Do We Believe Impossible Things?

From ABC News: Science & Technology

Why do so many people hold beliefs that are clearly false? A recent story on ABCNews.com said 80 million Americans believe we have been visited by aliens from another planet, and numerous studies show that millions of people believe in ghosts, extrasensory perception and, of course, alien abductions.

According to biologist Lewis Wolpert of University College, London, all those beliefs are clearly false, and they all share a common beginning. It may well have started when the first human realized he, or she, could make a fire by rubbing two sticks together.

Wolpert is the author of a new provocative book exploring the evolutionary origins of belief, called "Six Impossible Things Before Breakfast." The title comes from Lewis Carroll's classic "Through the Looking Glass," when Alice tells the White Queen that she cannot believe in impossible things.

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Smithsonian To Put Its 137 Million-Object Collection Online

From CNN Science:

WASHINGTON (AP) -- The Smithsonian Institution will work to digitize its collections to make science, history and cultural artifacts accessible online and dramatically expand its outreach to schools, the museum complex's new chief said Monday.

"I worry about museums becoming less relevant to society," said Secretary G. Wayne Clough in his first interviews since taking the Smithsonian's helm in July.

Clough, 66, who was president of the Georgia Institute of Technology for 14 years, says he's working to bring in video gaming experts and Web gurus to collaborate with curators on creative ways to present artifacts online and make them appealing to kids.

"I think we need to take a major step," Clough said in an earlier interview. "Can we work with outside entities to create a place, for example, where we might demonstrate cutting-edge technologies to use to reach out to school systems all over the country? I think we can do that."

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No Plant CO2 Relief In Warm World

From The BBC:

Plants are unlikely to soak up more carbon dioxide from the air as the planet warms, research suggests.

US scientists found that grassland took up less CO2 than usual for two years following temperatures that are now unusually hot, but may become common.

The conclusion parallels a real-world finding from Europe's 2003 heatwave, when the continent's plant life became a net producer, not absorber, of CO2.

The latest study is published in the scientific journal Nature.

Researchers extracted four intact segments of grassland, about 3 sq m in area and weighing about 12 tonnes each, from the prairies of Oklahoma, and placed them in special chambers at the Desert Research Institute (DRI) in Reno, Nevada.

Conditions in the chambers, such as temperature, moisture and sunlight, could be precisely controlled.

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