Ghost Remains After Black Hole Eruption

This is a composite image showing a small region of the Chandra Deep Field North. The diffuse blue object near the center of the image is believed to be a cosmic "ghost" generated by a huge eruption from a supermassive black hole in a distant galaxy. This X-ray ghost, a.k.a. HDF 130, remains after powerful radio waves from particles traveling away from the black hole at almost the speed of light, have died off. As the electrons radiate away their energy they produce X-rays by interacting with the pervasive sea of photons remaining from the Big Bang - the cosmic background radiation. (Credit: X-ray (NASA/CXC/IoA/A.Fabian et al.); Optical (SDSS), Radio (STFC/JBO/MERLIN))

From Science Daily:

ScienceDaily (May 29, 2009) — NASA's Chandra X-ray Observatory has found a cosmic "ghost" lurking around a distant supermassive black hole. This is the first detection of such a high-energy apparition, and scientists think it is evidence of a huge eruption produced by the black hole.

This discovery presents astronomers with a valuable opportunity to observe phenomena that occurred when the Universe was very young. The X-ray ghost, so-called because a diffuse X-ray source has remained after other radiation from the outburst has died away, is in the Chandra Deep Field-North, one of the deepest X-ray images ever taken. The source, a.k.a. HDF 130, is over 10 billion light years away and existed at a time 3 billion years after the Big Bang, when galaxies and black holes were forming at a high rate.

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American Diets Getting Worse

From Live Science:

Eat your vegetables. Exercise. Don't drink so much beer. Blah. Blah. Blah.

Even fewer Americans in their middle and later years adhere to this healthy lifestyle advice than they did two decades ago.

Despite the well-known benefits of a lifestyle that includes physical activity, eating a diet high in fruits and vegetables, maintaining a healthy weight, moderate alcohol use and not smoking, only a small proportion of older adults follow this healthy lifestyle pattern, a new survey finds.

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The Arctic's Oil Reserves Mapped

Undiscovered Arctic oil reserves are largely under the ocean

From The BBC:

An estimated 30% of the world's undiscovered gas and 13% of its undiscovered oil may be in the Arctic, according to a map published on Friday.

The map is the culmination of an assessment carried out by the US Geological Survey (USGS).

Writing in the journal Science, its authors say the findings are "important to the interests of Arctic countries".

But, they add, they are unlikely to substantially shift the geographic pattern of world oil production.

According to the new map, the majority of oil is likely to be found underwater, on continental shelves.

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The Most Painful Animal Bite on Earth

Image: nebarnix

From Environmental Graffiti:

Remember how whiny you were when your parents made you get a job or mow the lawn or whatever it was you had to do to “become a man/woman?” Feel like a sissy looking back on how “hard” you had it then? If not, you will.

The Setere-Mawe people of Brazil have found something far worse (albeit less humiliating) than your first job at McDonald’s.

Meet the bullet ant. So named because those unfortunate enough to have been stung by one compare it to a gunshot wound - very unfortunate people; apparently, they have also all been shot. It reportedly has the most painful sting of any insect on Earth.

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Tensions Feared As A THIRD Of World's Gas Reserves Found Beneath The Arctic

Untapped: A third of the world's remaining natural gas and 13 per cent of its oil is trapped beneath the Arctic, a survey shows

From The Daily Mail:

Tensions over the Arctic's untapped energy reserves are expected to build after a survey has found substantial mineral riches under the ice.

The analysis, by researchers at the U.S. Geologic Survey, found that a third of world's remaining natural gas and 13 per cent of its oil are trapped beneath the oceans of the North Pole.

The precious supply has remained largely untouched until now because of the impenetrable ice sheets.

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Freeze-thaw Cycle May Explain Saturn Moon's Odd Activity

Saturn's moon Enceladus spews out watery geysers today, but it can't have done so continuously throughout its lifetime, as there is no heat source to power the activity for so long. A new mechanism has been proposed to explain how the moon may freeze and thaw repeatedly (Image: Cassini Imaging Team/SSI/JPL/ESA/NASA)

From New Scientist:

If there is life on Saturn's bizarre, water-spewing moon Enceladus, it's about to spend a lot of time in the freezer.

So concludes Norman Sleep of Stanford University, who says a perpetual cycle of melting and refreezing may offer the best explanation for why Enceladus seems so active today. In Sleep's scenario, Enceladus is now heading back into a long cold phase after a comparatively brief warm spell.

For any potential life on Enceladus, "it's boom and bust", says Sleep.

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Cocker Spaniel World's Meanest Dog

The reason for any individual dog's aggression may be a combination of genetics and poor training, the scientists say (Source: iStockphoto)

From ABC News Australia:

A floppy-eared, innocent-looking breed may be one of the world's most aggressive dogs, according to a new study.

The Spanish study found that English cocker spaniels tend to be more hostile than other breeds.

The discovery adds to the mounting evidence that aggressiveness is an inherited characteristic, suggesting that genes and breeding practices can both help determine how a dog will behave.

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Neurons Take A Break During Slow-Wave Sleep

From Science News:

The time off prevents interruptions that could wake a person up.

Even neurons need quiet time. A new study shows the brain cells take time out while you sleep, preventing you from waking up at the drop of a hat or other nonthreatening object.

For decades, scientists have been measuring electrical activity in the brain during sleep with electroencephalograms, or EEGs. Researchers easily recognize the hallmark dips and blips of each stage of sleep, but what brain cells are doing to produce the signals hasn’t been apparent.

Now, a new study in the May 22 Science shows that a prominent electrical signal of slow-wave sleep, called the K-complex, indicates downtime for neurons. The quiet periods could help people ignore distractions, such as sounds and touches, and stay asleep, the researchers report.

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Melting Greenland Ice Sheets May Threaten Northeast United States, Canada

This visualization, based on new computer modeling, shows that sea level rise may be an additional 10 centimeters (4 inches) higher by populated areas in northeastern North America than previously thought. Extreme northeastern North America and Greenland may experience even higher sea level rise. (Credit: Graphic courtesy Geophysical Research Letters, modified by UCAR)

From Science Daily:

ScienceDaily (May 28, 2009) — Melting of the Greenland ice sheet this century may drive more water than previously thought toward the already threatened coastlines of New York, Boston, Halifax, and other cities in the northeastern United States and Canada, according to new research led by the National Center for Atmospheric Research (NCAR).

The study, which is being published May 29 in Geophysical Research Letters, finds that if Greenland's ice melts at moderate to high rates, ocean circulation by 2100 may shift and cause sea levels off the northeast coast of North America to rise by about 12 to 20 inches (about 30 to 50 centimeters) more than in other coastal areas. The research builds on recent reports that have found that sea level rise associated with global warming could adversely affect North America, and its findings suggest that the situation is more threatening than previously believed.

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New Radar to Provide Better Info On Rain

From Live Science:

The University of Oklahoma’s newest radar, OU-PRIME (Polarimetric Radar for Innovations in Meteorology and Engineering) was completed in January 2009.

The radar serves as a research and development testbed for the university's Atmospheric Radar Research Center (ARRC) and is housed within the National Weather Center on campus.

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Wolfram Co-Founder On Why Wolfram|Alpha Doesn't Need to Kill Google

Theo in Tub: Mike Walker

From Popsci.com:

Gray Matter's own Theodore Gray reports from his day job at Wolfram on how his new "knowledge engine" provides exactly what Google can't

PopSci's Grouse recently reviewed Wolfram|Alpha. I guess that's what happens when you ignore your editors for a week: They let someone else write about your project!

PopSci readers know me as the mad scientist behind the Gray Matter column, and the book based on it, Mad Science, but I actually have what I affectionately refer to as a day job, as co-founder of Wolfram Research, Inc, the company behind Wolfram|Alpha. And the reason I was ignoring my editor asking me to write about Wolfram|Alpha is that I was recovering from the lead up to our public launch of that very service.

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Blasting Off the Moon's Surface: Apollo 11, The Untold Story

From Popular Mechanics:

After a 22-hour stay on the moon, Aldrin and Armstrong prepared to fire the ascent stage of the lunar module to launch back into lunar orbit. Here, Collins tries to find the Eagle with a telescope, Aldrin breaks the engine-arm circuit breaker and the lunar module executes a series of burns before docking and returning for splashdown.

H. David Reed, flight dynamics officer (FIDO), Green Team, Mission Control: My job was to come in prior to ascent, find out where they landed, and use that information to compute their launch time. Then we’d upload that to the crew. When I called the tracking people, the guy at the other end of the line said, “Dave, take your pick. I’ve got five different landing sites.” He said: We know where the lunar module thinks it landed, where the backup guidance system thinks it landed, where the radars on the ground tracked them, where we targeted them, and now we’ve got the geologists saying a different location.

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Synchronized Brain Waves Focus Our Attention

From Wired Magazine:

Separate brain regions firing in unison may be what keeps us focused on important things while we ignore distractions.

A deluge of visual information hits our eyes every second, yet we’re able to focus on the minuscule fraction that’s relevant to our goals. When we try to find our way through an unfamiliar area of town, for example, we manage to ignore the foliage, litter and strolling pedestrians, and focus our attention on the street signs.

Now, researchers at the Massachusetts Institute of Technology have discovered that the brain’s control center syncs up to its visual center with high-frequency brain waves, directing attention to select features of the visual world.

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California Fires Up Laser Fusion Machine

From The Guardian:

Success at National Ignition Facility could pave the way for commercial laser fusion power stations and provide a solution to world energy crisis

A tentative first step towards an era of clean, almost limitless energy will take place today with the opening of a giant facility designed to recreate the power of the stars in an oversized warehouse in California.

The $3.5bn National Ignition Facility (NIF) sits in a 10-storey building covering three football fields and will harness the power of lasers to turn tiny pellets of hydrogen into thermonuclear energy.

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Scientists Identify Genes Behind Ageing Process

Ageing: Prof Partridge said tackling the very causes of ageing rather than treating the symptoms offers the best prospects for dealing with the diseases that result from it. Photo: GETTY

From The Telegraph:

Scientists have identified genes which control the ageing process in findings which could lead to new drugs to prevent illnesses from heart disease to Alzheimer's.

Mutations have been found to extend the lifespan of animals in the lab such as worms, fruit flies and mice - and appear to play the same role in humans.

Professor Linda Partridge, director of the Institute of Healthy Ageing at University College London, claims the research could help treat or delay many diseases simultaneously with medication.

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Decoding Antiquity: Eight Scripts That Still Can't Be Read

Photo: The Etruscan Alphabet - Shown here are two of three gold plaques from Pyrgi, circa 500BC. The plaque on the left is written in Etruscan, while the one on the right is written in Phoenician. They both describe the same event - the dedication by the Etruscan ruler Thefarie Velianas of a cult place (Image: Museo di Villa Giulia, Rome)

From The New Scientist:

WRITING is one of the greatest inventions in human history. Perhaps the greatest, since it made history possible. Without writing, there could be no accumulation of knowledge, no historical record, no science - and of course no books, newspapers or internet.

The first true writing we know of is Sumerian cuneiform - consisting mainly of wedge-shaped impressions on clay tablets - which was used more than 5000 years ago in Mesopotamia. Soon afterwards writing appeared in Egypt, and much later in Europe, China and Central America. Civilisations have invented hundreds of different writing systems. Some, such as the one you are reading now, have remained in use, but most have fallen into disuse.

These dead scripts tantalise us. We can see that they are writing, but what do they say?

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Canada Has A Frigid May After A Cold Winter

From Watts Up With That?

May has been frigid slowing the planting and emergence of the summer crops in Canada. Late freezes and even snows are still occurring regularly and can be expected the rest of the month.

The chart above shows the May 2009 temperature anomaly through May 24th. Parts of central Canada (Churchill, Manitoba) are running 16 degrees F below normal for the month through the 26th (map ends 24th). Every day this month has seen lows below freezing in Churchill and only 6 out of the first 26 days days had highs edge above freezing. The forecast the rest of the month is for more cold with even some snow today in Churchill and again this weekend perhaps further south.

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My Comment: I live in Quebec, Canada .... I can vouch for this report.

New Solar Cycle Prediction: Fewer Sunspots, But Not Necessarily Less Activity

This is an image of the sun from NASA's twin STEREO satellites. Credit: NASA

From Physorg.:

PhysOrg.com) -- An international panel of experts has released a new prediction for the next solar cycle, stating that Solar Cycle 24 will peak in May 2013 with a below-average number of sunspots. Led by the National Oceanic and Atmospheric Administration (NOAA) and sponsored by NASA, the panel includes a dozen members from nine different government and academic institutions. Their forecast sets the stage for at least another year of mostly quiet conditions before solar activity resumes in earnest.

"If our prediction is correct, Solar Cycle 24 will have a peak sunspot number of 90, the lowest of any cycle since 1928 when Solar Cycle 16 peaked at 78," says panel chairman Doug Biesecker of the NOAA Space Weather Prediction Center, Boulder, Colo.

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Earliest Known Case of Leprosy Unearthed

From Live Science:

A 4,000-year-old skeleton found in India bears the earliest archaeological evidence of leprosy, a new study reports.

The finding, detailed in the May 27 issue of the online journal PLoS ONE, is also the first evidence for the disease in prehistoric India and sheds light on how the disease might have been spread in early human history.

Though it is no longer a significant public health threat in most parts of the world, leprosy is still one of the least understood infectious diseases, in part because the bacteria that causes it (Mycobacterium leprae) is difficult to culture for research and has only one other animal host, the nine banded armadillo.

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Scientists Reaching Consensus On How Brain Processes Speech

Researchers are finding that both human and non-human primate studies have confirmed that speech, one important facet of language, is processed in the brain along two parallel pathways, each of which run from lower- to higher-functioning neural regions. (Credit: iStockphoto/Don Bayley)

From Science Daily:

ScienceDaily (May 27, 2009) — Neuroscientists feel they are much closer to an accepted unified theory about how the brain processes speech and language, according to a scientist at Georgetown University Medical Center who first laid the concepts a decade ago and who has now published a review article confirming the theory.

In the June issue of Nature Neuroscience, the investigator, Josef Rauschecker, PhD, and his co-author, Sophie Scott, PhD, a neuroscientist at University College, London, say that both human and non-human primate studies have confirmed that speech, one important facet of language, is processed in the brain along two parallel pathways, each of which run from lower- to higher-functioning neural regions.

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