Galactic Black Holes May Be More Massive Than Thought

Illustrated is a new understanding of the relationship between the mass of a galaxy’s central black hole and the mass of its central bulge of stars. A new model suggests revising how this relationship is defined, at least for black holes in the most massive galaxies. Credit: Tim Jones/Univ. of Texas at Austin after K. Cordes and S. Brown/STScI

From Science News:

Predictions and observations could resolve seeming mismatch between close and distant giants

Astronomers report that some of the biggest supermassive black holes in nearby galaxies are at least twice and possibly four times as heavy as previously estimated. The findings come from new simulations by two independent teams of researchers, as well as new observations of stars whipping around a handful of supermassive black holes at the centers of massive galaxies no more than a few hundred million light-years from Earth.

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Long Shot: Planet Could Hit Earth In Distant Future

From Yahoo News/Space.com:

Our solar system has a potentially violent future. New computer simulations reveal a slight chance that a disruption of planetary orbits could lead to a collision of Earth with Mercury, Mars or Venus in the next few billion years.

Despite its diminutive size, Mercury poses the greatest risk to the solar system's order. Results of the computer model show a roughly 1 percent chance that the elongation of Mercury's orbit will increase to the point where the planet's path around the sun crosses that of Venus. That's when planetary pandemonium would ensue, the researchers find, and Mercury could be ejected from the solar system, or collide with the sun or a neighboring planet, such as Earth.

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Supervolcano May Be Brewing Beneath Mount St Helens

Photo: The US volcano may be connected to a semi-molten magma chamber that could fuel a giant eruption (Image: MAI / Rex Features)

From New Scientist:

IS A supervolcano brewing beneath Mount St Helens? Peering under the volcano has revealed what may be an extraordinarily large zone of semi-molten rock, which would be capable of feeding a giant eruption.

Magma can be detected with a technique called magnetotellurics, which builds up a picture of what lies underground by measuring fluctuations in electric and magnetic fields at the surface. The fields fluctuate in response to electric currents travelling below the surface, induced by lightning storms and other phenomena. The currents are stronger when magma is present, since it is a better conductor than solid rock.

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Is This A Pandemic? Define ‘Pandemic’

TERMINOLOGY It is not often clear when the spread of a disease, such as cholera, for which a boy was being treated in Congo, becomes a pandemic. Uriel Sinai/Getty Images

From The New York Times:

After decades of warnings about the inevitability of another pandemic of influenza, it is astonishing that health officials have failed to make clear to the public, even to many colleagues, what they mean by the word pandemic.

Generations of people have used the term to describe widespread epidemics of influenza, cholera and other diseases. But as the new H1N1 swine influenza virus spreads from continent to continent, it is clear that a useful definition is far more complicated and elusive than officials had thought.

And what is at stake is far more than an exercise in semantics. A clear understanding of the term is central to the World Health Organization’s six-level staging system for declaring a pandemic, which in turn informs countries when to set their control efforts in motion.

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Birth Of A Star Predicted

A study carried out by two astronomers from the Calar Alto Observatory, in Almeria, and the observatory at the University of Munich, in Germany, has predicted that the dark nebula Barnard 68 will become a shining star in 200,000 years' time. (Credit: Image courtesy of FECYT - Spanish Foundation for Science and Technology)

From Science Daily:

ScienceDaily (June 10, 2009) — The astrophysicist João Alves, director of the Calar Alto Observatory in Almeria, and his colleague Andreas Bürkert, from the German observatory in the University of Munich, believe that "the inevitable future of the starless cloud Barnard 68" is to collapse and give rise to a new star, according to an article which has been published recently in The Astrophysical Journal.

Barnard 68 (B68) is a dark nebula located in the constellation of Ofiuco, around 400 light years away. Nebulae are interstellar clouds of dust and gas located within the Milky Way, and some of these are the so-called 'dark' nebulae, the silhouettes of which block out the light of the stars and other objects behind them.

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Study Finds 4 Things That Keep Old Minds Sharp

From Live Science:

Some people seem to be able to keep their wits well into old age. But what's their secret?

New research reveals a host of factors that may contribute to a sharper mind late in life, including exercise, education, non-smoking behavior and social activity.

While other research has shown that genetics play a role in whether people get dementia, the study adds to a growing body of research that is uncovering ways you can up the odds of keeping your brain healthy and your memory sharp now and later.

The study tested the cognitive ability of 2,500 people aged 70 to 79 over eight years. More than half of the subjects showed normal age-related decline in mind function and 16 percent had a considerable decline during the course of the study. But 30 percent of participants did not show a change in their cognitive skills, and some even improved on the tests.

The researchers then looked to see what could account for this difference.

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New Evidence Suggests That Using the Internet Might Make You Smarter, Not Rot Your Brain

Chalk It Up to Google: Surfing the web is bench pressing for the brain,
according to findings of a recent study Kevin Hand

From Popsci.com:

Dispelling the myth that surfing the Web is a time-draining waste of neurons.

"The simple headline here is that Google is making us smarter," says Gary Small of the Semel Institute for Neuroscience and Human Behavior at the University of California at Los Angeles. Thank you, Dr. Small. And thank you, Internet, for not only helping me dig up this information but also juicing up my brain while I looked for it. Small recently published results showing that searching the Internet does for the brains of older folks what doing bench presses does for chest muscles.

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Off-the-Shelf Genetic Testing On Display

From Technology Review:

The emerging market of direct-to-consumer genetic testing gets down to business.

Want to share your genome online with friends and family? Find out how well you metabolize B vitamins? Determine if you're genetically susceptible to forming blood clots on long flights? All of this is possible with a credit card and an Internet connection, thanks to the growing field of direct-to-consumer genetic testing, which aims to move genetic tests out of the doctor's office and into the hands of individuals.

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Speeding Up Brain Networks Might Boost IQ

From New Scientist:

For decades scientists have tried, mostly in vain, to explain where intelligence resides in our brains. The answer, a new study suggests, is everywhere.

After analysing the brain as an incredibly dense network of interconnected points, a team of Dutch scientists has found that the most efficiently wired brains tend to belong to the most intelligent people.

And improving this efficiency with drugs offers a tantalising – though still unproven – means of boosting intelligence, say researchers.

The concept of a networked brain isn't so different from the transportation grids used by cars and planes, says Martijn van den Heuvel, a neuroscientist at Utrecht University Medical Center who led the new study.

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Scientists: Global Warming Has Already Changed Oceans

From McClatchy News:

WASHINGTON — In Washington state, oysters in some areas haven't reproduced for four years, and preliminary evidence suggests that the increasing acidity of the ocean could be the cause. In the Gulf of Mexico, falling oxygen levels in the water have forced shrimp to migrate elsewhere.

Though two marine-derived drugs, one for treating cancer and the other for pain control, are on the market and 25 others are under development, the fungus growing on seaweed, bacteria in deep sea mud and sea fans that could produce life-saving medicines are under assault from changing the ocean conditions.

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US, Europe Look To Partnership On Mars Exploration

This combination of images provided by NASA, right, and the European Space Agency, left, shows the Space Agency logos. For almost half a century, the United States has dominated the exploration of Mars from the first grainy black-and-white pictures of the craggy surface to the more recent discovery of ice. Now, budget woes are pushing NASA toward a joint exploration venture with Europe. By 2016, the U.S. may unite with the European Space Agency for future Mars trips — a move that would mark a significant shift for NASA. Details of such a union could come by the end of June 2009. (AP Photo/NASA, ESA)

From Yahoo News/AP:

LOS ANGELES – For almost half a century, the United States has dominated the exploration of Mars from the first grainy black-and-white pictures of the craggy surface to the more recent discovery of ice.

Now, budget woes are pushing NASA toward a joint exploration venture with Europe. By 2016, the U.S. may unite with the European Space Agency for future Mars trips — a move that would mark a significant shift for NASA.

Details of such a union could come by the end of this month.

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Let Me Sleep On It: Creative Problem Solving Enhanced By REM Sleep

From Science Daily:

ScienceDaily (June 9, 2009) — Research led by a leading expert on the positive benefits of napping at the University of California, San Diego School of Medicine suggests that Rapid Eye Movement (REM) sleep enhances creative problem-solving. The findings may have important implications for how sleep, specifically REM sleep, fosters the formation of associative networks in the brain.

The study by Sara Mednick, PhD, assistant professor of psychiatry at UC San Diego and the VA San Diego Healthcare System, and first author Denise Cai, graduate student in the UC San Diego Department of Psychology, shows that REM directly enhances creative processing more than any other sleep or wake state. Their findings will be published in the June 8th online edition of the Proceedings of the National Academy of Sciences (PNAS).

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Risk Factors for Heart Attack Pinned Down

From Live Science:

If you smoke, are overweight or have diabetes or high blood pressure, doctors have a fresh warning for you: These four well-known risk factors for heart attack significantly increased the size of the heart's left ventricle, a key precursor of heart failure.

The finding is detailed today in the journal Circulation: Journal of the American Heart Association.

All four risk factors were strongly correlated with greater size of the heart's left ventricle over the short term (four years) and the long term (16 years) in a study of more than 4,217 people.

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The Future Of "Plug-In" Hybrids--And Recharging On The Go

"Seattle, Chicago, Phoenix and several California cities are now setting up recharging infrastructures for plug-in hybrid and electric vehicles. Paris, where Toyota is testing plug-in hybrids, has over 80 recharging stations in the city and suburbs. And London is installing upwards of 40 recharging stations around town. Pictured: the charging port for a Plug-in Hybrid Saturn Vue." Geognerd, courtesy Flickr

From Scientific American:

The success of plug-in hybrid cars such as the Tesla Roadster hinges on building an infrastructure to charge the batteries away from home

Dear EarthTalk: With plug-in hybrid and electric cars due to hit the roads sometime soon, will there be places to plug them in besides at home? And if so, how much will it cost to re-charge?
-- Nicole Koslowsky, Pompano Beach, FL

Gasoline-electric hybrids, like the Toyota Prius, are all the rage due to their fuel efficiency, and consumers have been clamoring for carmakers to up the ante and give these vehicles a plug. This way the batteries can be charged at home and not just by the gas engine and other on-board features, thus greatly reducing the need for gas except for long trips. And purely electric cars, like the Tesla Roadster already on the market, will be making more appearances on the streets as greater production brings the costs down.

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How To Chat With an Alien: The Official Guide

From Discover Magazine:

The folks at the Search for Extraterrestrial Intelligence Institute, or SETI, in Mountain View, Calif., want to make sure we earthlings are prepared for a conversation with extraterrestrials. The group, which is dedicated to searching space for signs of life, recently began searching 10 billion channels using radio telescopes to give us a chance to communicate with beings on other planets.

The next step, of course, is to figure out what to say. The institute has given the public the chance to chime in on this issue through the Earth Project, which asks space enthusiasts how we should converse with aliens.

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Vaccines In Space: Taking Biotech To Microgravity Labs

Scanning electron micrograph (SEM) of staphylococcus aureus bacteria.

From Popular Mechanics:

Last week, International Space Station crews conducted a trailblazing microgravity vaccine experiment on behalf of a company to thwart drug-resistant infections. The trick: growing superdiseases in space. Soon after, the CEO of the company behind the experiment told attendees at a conference in New York City what he envisions for the future of space-age biotech.

Last month the public watched as astronauts on the space shuttle Atlantis conducted risky spacewalks to fix the Hubble Space Telescope. But there was another, quieter task that the astronauts pursuedóa commercial drug experiment aimed at finding a vaccine against a deadly staph infection besetting hospitals.

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This Is The Moon In HD, Closer Than Ever Before

From PopSci.com:

Japan's Kaguya lunar probe sends back stunning high-definition footage from an extremely low altitude.

Japan's Kaguya lunar surveyor craft has sent back fresh HD clips as its orbit slowly degrades, bringing it closer than ever to the surface. In two days it will crash-land, bringing its mission to an end, but until then, it's keeping the ultra-crisp, almost surreal lunar footage coming.

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How Fire Made Us Human -- A Commentary

Image: Two new books argue that taming fire and learning to cook were key in human evolution (Image: University of New Mexico Press)

From New Scientist:

THE inhabitants of the Admiralty Islands say that a divine serpent once asked some children to cook a fish. The children dried it in the sun and ate it raw. Seeing this, the serpent gave them fire and taught them to cook.

So it is with every culture: the way that humans acquired fire is enshrined in legend, usually involving either a heroic benefactor or a trickster. In Greek myth, Prometheus stole fire from the gods and was punished for it; according to the Apache, it was a cunning fox who captured it for us. Once acquired, fire became sacred. In ancient Rome, it was guarded in the temple of Vesta, goddess of the hearth, by the Vestal Virgins. In India's Hindu temples, Agnihotri (literally "fire-guarder") Brahmans are still keepers of the sacred flame.

Legends aside, no other animal controls fire. Most fear it. The use of fire sets humans apart. But what difference has it made?

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A Real Whopper: Black Hole Is Most Massive Known

(Image from Discovery.com)

From Yahoo News/Space.com:

PASADENA, CALIF. — The most massive black hole yet weighed lurks at the heart of the relatively nearby giant galaxy M87.

The supermassive black hole is two to three times heftier than previously thought, a new model showed, weighing in at a whopping 6.4 billion times the mass of the sun. The new measure suggests that other black holes in nearby large galaxies could also be much heftier than current measurements suggest, and it could help astronomers solve a longstanding puzzle about galaxy development.

"We did not expect it at all," said team member Karl Gebhardt of the University of Texas at Austin.

The discovery was announced here today at the 214th meeting of the American Astronomical Society.

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Huge Cosmic Explosions Are Dark and Mysterious

From Yahoo News/Space:

PASADENA, CALIF. — Some of the most powerful explosions in the universe are invisible. But astronomers are a sneaky bunch. By monitoring X-rays and gamma rays, they're able to see what's going on.

Today astronomers said that a certain type of gamma-ray burst, the most energetic explosions in the universe, can light up areas of galaxies, but only in these more energetic wavelengths of the electromagnetic spectrum, revealing intense star formation and death.

A survey of so-called "dark" gamma-ray bursts, which shine brightly in the gamma and X-ray parts of the spectrum but show barely a spark of visible light, found that these beacons can shed light on the dusty corners of galaxies where stars are born.

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Flexible Solar Power Shingles Transform Roofs From Wasted Space To Energy Source

PNNL, Vitex Systems and Battelle are working to adapt a film encapsulation process that would enable flexible solar panels like this. The flexible solar panels could be placed on rooftops like shingles and could replace today's boxy solar panels that are made with rigid glass or silicon and mounted on thick metal frames. (Credit: Photo courtesy of Vitex Systems, Inc.)

From Science Daily:

ScienceDaily (June 8, 2009) — A transparent thin film barrier used to protect flat panel TVs from moisture could become the basis for flexible solar panels that would be installed on roofs like shingles.

The flexible rooftop solar panels - called building-integrated photovoltaics, or BIPVs - could replace today's boxy solar panels that are made with rigid glass or silicon and mounted on thick metal frames. The flexible solar shingles would be less expensive to install than current panels and made to last 25 years.

Read more .....

Large Mammal Migrations Are Disappearing

Tiang herd in the Southern sector of Boma National Park. Credit: P. Elkan, Wildlife Conservation Society/National Geographic

From Live Science:

Africa is home to spectacular migration events. Large mammals ranging from Grant's gazelles to blue wildebeests pound their hooves across vast tracts of land as the seasons change.

New research suggests, however, that migrations across the continent might be going extinct.

For the first time, scientists have compiled and analyzed data on all of the world's largest and definitive migrating land mammals. The researchers looked at the migration history for a group of ungulates, all of them hoofed mammals, weighing more than 44 pounds (20 kg). The data suggest that one-quarter of these mammals no longer migrate, and human development is responsible for the decline, said Grant Harris, co-author of the study.

In many cases, data on these animals is simply nonexistent.

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Nasa Rover Sinks Up To Wheel Hubs In Martian Dust... Now How To Get It Rolling Again?

The Spirit rover is stuck on the Home Plate - a plateau roughly 90m across within the Columbia Hills inside the Gusev crater

From The Daily Mail:

It's a familiar problem to drivers - you get stuck, your wheels are spinning and you need a tow rope to get you out.

But what happens when the stuck vehicle is the Spirit Rover on Mars nearly 36 million miles away?

Nasa's space exploration buggy ran into soft earth in May after crawling across the red planet for five years and sending back impressively detailed pictures from the surface.

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Free-Floating Black Hole May Solve Space 'Firefly' Mystery

The object responsible for the mysterious brightening seen in 2006 (right) is ordinarily too dim to detect (left) (Image: Barbary et al.)

From New Scientist:

A wandering black hole may have torn apart a star to create a strange object that brightened mysteriously and then faded from view in 2006, a new study suggests. But more than three years later, astronomers are still at a loss to explain all the features of the strange event.

The object, called SCP 06F6, was first spotted in the constellation Bootes in February 2006 in a search for supernovae by the Hubble Space Telescope. The object flared to its maximum brightness over about 100 days, a period much longer than most supernovae, which do so in just 20 days.

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Key To Blood Clotting Discovered

From The BBC:

Scientists have discovered a molecular mechanism that is key to regulating the way blood clots.

The team from Harvard University, writing in the journal Science, said the finding could help treat people who have blood-clotting disorders.

If blood clots too much, people can develop a potentially fatal thrombosis; too little and they can bleed to death.

UK experts said the research was important and could help develop new treatments for blood disorders.

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What's So Hot About Chili Peppers?

From The Smithsonian:

Seated in the bed of a pickup truck, Joshua Tewksbury cringes with every curve and pothole as we bounce along the edge of Amboró National Park in central Bolivia. After 2,000 miles on some of the worst roads in South America, the truck's suspension is failing. In the past hour, two leaf springs—metal bands that prevent the axle from crashing into the wheel well—jangled onto the road behind us. At any moment, Tewksbury's extraordinary hunting expedition could come to an abrupt end.

A wiry 40-year-old ecologist at the University of Washington, Tewksbury is risking his sacroiliac in this fly-infested forest looking for a wild chili with a juicy red berry and a tiny flower: Capsicum minutiflorum. He hopes it'll help answer the hottest question in botany: Why are chilies spicy?

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My Comment: The hotter the better .... that is my motto.

Obama's Climate Guru: Paint Your Roof White!

Houses with white roofs, like these in Greece, would be able to reflect light back through the atmosphere, according to Steven Chu, the US Secretary of Energy. ALAMY

From The Independent:

Some people believe that nuclear power is the answer to climate change, others have proposed green technologies such as wind or solar power, but Barack Obama's top man on global warming has suggested something far simpler – painting your roof white.

Steven Chu, the US Secretary of Energy and a Nobel prize-winning scientist, said yesterday that making roofs and pavements white or light-coloured would help to reduce global warming by both conserving energy and reflecting sunlight back into space. It would, he said, be the equivalent of taking all the cars in the world off the road for 11 years.

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5 Myths About Women's Bodies

From Live Science:

Historically research has focused on men, but in recent years, women have been getting increased attention. (Don't blame the delay on sexism; women's hormone fluctuations are, well, complicated and can confound basic findings.) Still, much misinformation about the female body circulates in mainstream consciousness.

-- Robin Nixon, Special to LiveScience

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Geography And History Shape Genetic Differences In Humans

Global allele frequencies and haplotype patterns at three genes with signals of positive selection. (Credit: Coop G, Pickrell JK, Novembre J, Kudaravalli S, Li J, et al.. The Role of Geography in Human Adaptation. PLoS Genetics, 2009; 5 (6): e1000500 DOI: 10.1371/journal.pgen.1000500)

From Science Daily:

ScienceDaily (June 7, 2009) — New research indicates that natural selection may shape the human genome much more slowly than previously thought. Other factors -- the movements of humans within and among continents, the expansions and contractions of populations, and the vagaries of genetic chance – have heavily influenced the distribution of genetic variations in populations around the world.

The study, conducted by a team from the Howard Hughes Medical Institute, the University of Chicago, the University of California and Stanford University, is published June 5 in the open-access journal PLoS Genetics.

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Is Solar Power Dead In The Water?

From The Washington Post:

Congress's rush to embrace solar power is having some unintended consequences. It will turn over a large chunk of federal land to private energy companies, and it may involve withdrawing billions of gallons of water from sensitive desert habitat.

By 2015, Congress wants the Interior and Energy Departments to place, on federal land, renewable energy projects that can generate at least 10,000 megawatts of electricity. The Energy Policy Act of 2005 has set off a frantic land grab as solar and wind energy companies rush to obtain permits for projects in Arizona, California, Colorado, Nevada, New Mexico and Utah.

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Berners-Lee: We No Longer Fully Understand The Web -- A Commentary

Image: Tim Berners-Lee, inventor of the World Wide Web, says its size and power over society have become so great that we no longer fully comprehend how it works (Image: Catrina Genovese / WireImage)

From New Scientist:

World Wide Web inventor Tim Berners-Lee wants to put the web under the microscope to investigate how it changes our behaviour. Paul Marks asked him what he hopes to achieve

Why did you decide to subject the web itself to scientific scrutiny?

Web science is already happening. People are studying the effect of the web within disciplines like social science, economics, psychology and law. Our Web Science Research Initiative aims to bring that research together. There are converging web-related issues cropping up, like privacy and security, that we currently have no way of thinking about. Nobody has thought to look at how people and the web combine as a whole - until now.

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How to Clean House: Top 10 Dirt-Dispelling Tips

(Photograph by Zach Desart)

From Popular Mechanics:

Chances are you own a shop vacuum, and maybe a pressure washer. These tools—plus a few more—will help you get started getting rid of the dirt on your house’s siding, shop floor, basement corners and fences and decks. Here is the ultimate guide to putting grime in its place.

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Bing Is Pretty, But Is it Any Good?

From Popsci.com:

The Grouse takes a chance on Microsoft's Google-killer

Heard of Bing yet? If not, you soon will. Backed by a reported $100-million-dollar promotional campaign, Bing is Microsoft's latest grasp at double digits in the war for search engine market share, of which Redmond now owns between 5 and 6 percent (according to Net Applications' Market Share report). After months of beta testing followed by a public preview, Bing officially took over this week as THE search engine powering all of MSN. So, if you use any Microsoft services with even limited frequency, you'll be getting friendly with Bing whether you know it or not, and whether you like it or not.

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Long Distance Space Travel Leaves You Short, Fat And Ugly, Claim Scientists

Image: Making long space journeys, like those envisaged in the future, will not be good for your looks or figure, claim scientists who believe they will leave astronauts looking short, fat and bald. Photo: NASA

From The Telegraph:

Going boldly where no man has gone before is likely to leave you going bald, claims scientists – not to mention fat and ugly.

Making long space journeys, like those envisaged in the future, will not be good for your looks or figure, claim scientists who believe they will leave astronauts looking short, fat and bald.

They believe living permanently in space for many years, perhaps even for many generations, adversely affects human's looks because they will not require any effort to move or keep warm.

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Cloned Species:

Recipe for a Resurrection

From National Geographic:

Bringing extinct species back to life is no longer considered science fiction. But is it a good idea?

Each new woolly mammoth carcass to emerge from the Siberian permafrost triggers a flurry of speculation about resurrecting this Ice Age giant. Researchers have refined at least some of the tools needed to turn that hope into reality. Last November, when a team led by Teruhiko Wakayama, a reproductive biologist based in Kobe, Japan, reported it had cloned mice that had been frozen for 16 years, the scientists conjectured that the same techniques might open the door to cloning mammoths and other extinct species preserved in permafrost. Talk of cloning surged again a few weeks later when a group at Pennsylvania State University, led by Webb Miller and Stephan C. Schuster, published 70 percent of the mammoth genome, laying out much of the basic data that might be required to make a mammoth.

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Email 17 Great Historical Moments Ruined by Modern Technology

From Cracked:

Back in the days before the internet, if a man wanted to learn something, he had to open a newspaper. If he needed to kill Germans, he did it with his bare hands. And if he wanted some milk ... well, he had it delivered right to his door.

Yes, everything other than milk acquisition was much more difficult without modern technology. But does that make it worse? We asked you to show us how some famous historic moments would have been ruined if modern technology had existed at the time. The winner is below, but first the runners up ...

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Hat Tip Geek Press.

Scientists Trace Laughter Back 16million Years... By Tickling Apes

Amusing research: By analysing the reactions produced by gently tickling ape feet, palms, necks and armpits, Dr Davila Ross has concluded that laughter can be traced back 16million years

From The Daily Mail:

As science experiments go, it was real hoot.

Researchers mapping the evolution of laughter gently tickled the feet, palms, necks and armpits of baby humans and apes.

By analysing the sounds the animals made - giggles, hoots, grunts and pants - they concluded that laughter can be traced back some 16million years, and that it evolved along the same pathway as our evolution.

Read more ....

Ancient Creatures Survived Arctic Winters

From Live Science:

Flowering plants and hippo-like creatures once thrived in the Arctic, where the tundra and polar bears now prevail.

New research, detailed in the June issue of the journal Geology, is shedding light on the lives of prehistoric mammals on Canada's Ellesmere Island 53 million years ago, including how they survived the six months of darkness during the Arctic winter.

Today, Ellesmere Island, located in the high Arctic (about 80 degrees north latitude), is a polar desert that features permafrost, ice sheets, sparse vegetation and a few mammals. Temperatures there range from minus 37 degrees Fahrenheit (-38 Celsius) in winter to plus 48 degrees F (9 Celsius) in summer. It is one of the coldest and driest places on Earth.

But 53 million years ago, the Arctic had a completely different look.

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Meet The Real 40-Year-Old Virgins

From New Scientist:

Contrary to Hollywood notions, the 40-year-old virgin is not an awkward yet funny and endearing electronics salesman played by Steve Carell.

He is a church-going teetotaller who has neither been to jail nor served in the military, according to a new survey of more than 7000 people. He also represents an estimated 1.1 million American men and 800,000 women aged 25 to 45 who have never had sex.

The study, led by urologist Michael Eisenberg of the University of California, San Francisco, will appear in an upcoming issue of the Journal of Sexual Medicine.

Read more ....

High Population Density Triggers Cultural Explosions

New research suggests that increasing population density, rather than boosts in human brain power, appears to have catalyzed the emergence of modern human behavior. (Credit: iStockphoto)

From Science Daily:

ScienceDaily (June 5, 2009) — Increasing population density, rather than boosts in human brain power, appears to have catalysed the emergence of modern human behaviour, according to a new study by UCL (University College London) scientists published in the journal Science.

High population density leads to greater exchange of ideas and skills and prevents the loss of new innovations. It is this skill maintenance, combined with a greater probability of useful innovations, that led to modern human behaviour appearing at different times in different parts of the world.

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PICTURES: New Cloud Type Discovered?

From National Geographic:

An "asperatus" cloud rolls over New Zealand's South Island in an undated picture.

This apparently new class of clouds is still a mystery. But experts suspect asperatus clouds' choppy undersides may be due to strong winds disturbing previously stable layers of warm and cold air.

Asperatus clouds may spur the first new classification in the World Meteorological Organization's International Cloud Atlas since the 1950s, Gavin Pretor-Pinney said.

Read more ....

How Antarctica Got Its Ice

The large glaciated valley of Nant Francon, Snowdonia. This valley is similar in relative dimensions (though smaller in size) to the main glaciated valley beneath the ice in central Antarctica. Credit: Martin Siegert

From Live Science:

Antarctica is a massive block of ice today, but it used to more simply be a range of glacier-topped mountains like those found in Alaska and the Alps.

The strange continent's thick ice sheets formed tens of millions of years ago against an Alpine-style backbone of mountains during a period of significant climate change, a new study finds.

The Antarctic continent now is covered almost entirely by ice that averages about a mile (1.6 kilometers) thick.

Scientists have known for some time that the Antarctic Ice Sheet formed around 14 million years ago, "but we didn't know how it formed," said study team member Martin Siegert of the University of Edinburgh in Scotland.

Read more ....

Diving Robots Could Recover Air France 447's Black Box

From Popular Mechanics:

As details of the telemetry sent by Air France 447 in its final minutes become known, deep-sea technology experts are saying that the recovery of the aircraft's cockpit voice recorder and digital flight data recorder—the black boxes—will be difficult, but not impossible, with the help of deep-sea-diving robots.

After officials pinpointed the location of Air France's Airbus A330 crash site, they turned to the difficult task of recovering the black boxes, which hold the official recordings of events that happened before the plane went down. Black boxes, which are actually painted orange, can give investigators the missing bits and pieces of data needed to determine an accident's probable cause. To help officials find the boxes, embedded technology sends sonarlike signals, which can be detected for up to 30 days provided listening equipment can get within approximately 1 mile of the box, according to a spokesman for the National Transportation Safety Board. In the case of Flight 447, the crash area in the Atlantic Ocean is too deep for divers to reach.

Read more ....

Do Dinosaurs Still Exist?

Conan Doyle's "Lost World," near Angel Falls in the jungles of Venezuela, in a 2007 photo. It was his visit to this area that inspired him to write about the idea that dinosaurs may still exist in places like this. Credit: Benjamin Radford

From Live Science:

The idea of still-living dinosaurs has captured the public imagination for well over a century.

Arthur Conan Doyle, creator of Sherlock Holmes, published a 1912 novel called "The Lost World," set in the remote Venezuelan jungle where dinosaurs still survive in modern times. Films such as "Jurassic Park" and "Land of the Lost," which opens Friday, were inspired by Conan Doyle's vision — in fact the sequel to "Jurassic Park" was titled "The Lost World."

The animated film "Up" (currently No. 1 at the box office) also takes place in this lost world, the plot involving the discovery of an unknown, multicolored dinosaur.

For most of us, fiction is good enough. Yet some believe that giant dinosaurs still exist today, just beyond the reach of scientific proof.

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Lost In Space: The Science Of Battlestar Galactica

From New Scientist:

Sci-fi TV show Battlestar Galactica has been much praised for its gritty realism – despite being the story of space-borne refugees fleeing genocidal robots. Its treatment of subjects like suicide bombing and torture have won it plaudits from all corners; its cast and creators were even invited to address the UN earlier this year.

But does the series "do" science as convincingly as it does politics? We spoke to Kevin Fong, lecturer in space medicine at University College London and a keen advocate of manned space travel, about the series' depiction of space travel and the challenges facing astronauts on long space journeys.

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NASA Goddard Study Suggests Solar Variation Plays A Role In Our Current Climate

From Watts Up With That:

NASA Study Acknowledges Solar Cycle, Not Man, Responsible for Past Warming

Report indicates solar cycle has been impacting Earth since the Industrial Revolution
From the Daily Tech, Michael Andrews. (h/t to Joe D’Aleo)

Some researchers believe that the solar cycle influences global climate changes. They attribute recent warming trends to cyclic variation. Skeptics, though, argue that there’s little hard evidence of a solar hand in recent climate changes.

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Mountains Hidden Under Antarctic Ice Revealed By Radar Map

From Times Online:

Antarctic mountains hidden beneath thousands of metres of ice have been mapped in detail for the first time.

One of Antarctica’s highest mountain ranges, located in the centre of the continent, shows remarkable similarities to the Alps, with steep cliffs, valley steps and flat tributary valleys.

The study, published today in the journal Nature, mapped the Gamburtsev mountains by bouncing radar signals off their hidden surface and observing how long they took to return. The highest peak was found to be 2,434m (7,985ft) above sea level, about twice the height of Ben Nevis.

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Trading Energy For Safety, Bees Extend Legs To Stay Stable In Wind

Some bees brace themselves against wind and turbulence by extending their sturdy hind legs while flying. (Credit: iStockphoto/Roel Dillen)

From Science Daily:

ScienceDaily (June 3, 2009) — New research shows some bees brace themselves against wind and turbulence by extending their sturdy hind legs while flying. But this approach comes at a steep cost, increasing aerodynamic drag and the power required for flight by roughly 30 percent, and cutting into the bees' flight performance.

The findings are detailed in the Proceedings of the National Academy of Sciences.

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Sub Explores Ocean's Deepest Trench

Map of Mariana Trench. Credit: NOAA

From Live Science:

A robotic vehicle named Nereus has made one of the deepest ocean dives ever — 6.8 miles (10,902 meters), a team of scientists and engineers reported yesterday. At this depth, Nereus was able to explore the Challenger Deep — the ocean's lowest point, located in the Mariana Trench in the western Pacific.

Nereus took the plunge Sunday. It was the first exploration of the Mariana Trench since 1998.

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Four Years Of Google Earth, And What Has It Found?

Atlantis?: Courtesy Google

From Popular Science:

The virtual mapping tool, which turns four years old this month, has led to some amazing discoveries.

Google Earth in its current form went live in June 2005. In addition to allowing users to fly to their childhood homes, zoom in on potential vacation spots, and explore under the sea and atop the world's highest peaks, the virtual mapping software has proven instrumental in a number of scientific discoveries -- several in 2009 alone. Here's a look back at some of the highlights.

Any guesses on future Google Earth discoveries? Will Google Earth be an ever-more-important scientific tool in the future? Post in the comments.

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Space 'Causes Disabling Headaches In Astronauts'

Astronaut: Twelve of the 17 astronauts reported 21 headaches during the test Photo: AP

From The Telegraph:

Astronauts who have no history of bad headaches can be prone to disabling attacks while in space, neurologists say.

Contrary to prevailing theories, headaches in space are not caused by motion sickness, they said.

Instead, the problem could lie in an increase in blood flow to the head, causing painful pressure on the brain.

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