Archive for the ‘Science’ Category

Nuclear Power ?

Saturday, August 14th, 2010

– A decade ago, people (most people) were pretty clear that the big problem with nuclear power is the waste it generates.   And, the wide consensus was that until we solve that problem, using nuclear power is a no-win strategy.  Yes, we get the power now but we have to do something with the waste – and we really have no good idea what to do with it other than burying it.

– It takes over 10,000 years to begin to cool down.   Essentially, we are burying extremely dangerous stuff that we can only hope does not impact those living here in thousands of years.   I, personally, don’t think we have that right – to put them at great risk.

– If humanity had faced up to its impending energy problems a decade or two ago, we might have had time to build out alternative energy systems to replace oils and gases.   But, we went into denial on the entire issues and now we’re drawing close to the time when the lights really are going to go off if we don’t take action.

– In short, we’ve driven ourselves into the fatal corner wherein nuclear power is the only real option we have – other than letting the light go off.   That’s pretty short term thinking and, unfortunately, those living here on Earth many thousands of years from now, may have to pay a terrible price for our thoughtlessness.

– Here are two stories about nuclear power as it is evolving in the world today:

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Chris Huhne says new nuclear plants on track for 2018

Italy: ‘No choice but to return to nuclear power

Using idle computer time

Saturday, August 14th, 2010

A lot of today’s computer systems have two and even four processors.   That’s a lot of computing power going to waste that could be doing useful work for someone.

It turns out that there are ways to use this extra computing power.   I’ve been doing it for a decade.  First with the SETI people and then later with the BOINC group.

The other day, one of the programs I contribute computing time to discovered a new and very strange Pulsar.   and

Volunteering your spare computer time doesn’t cost you anything and it might lead to new scientific discoveries, medical cures and who knows what.

Check it out.

Methane releases in arctic seas could wreak devastation

Wednesday, July 21st, 2010

Massive releases of methane from arctic seafloors could create oxygen-poor dead zones, acidify the seas and disrupt ecosystems in broad parts of the northern oceans, new preliminary analyses suggest.

Such a cascade of geochemical and ecological ills could result if global warming triggers a widespread release of methane from deep below the Arctic seas, scientists propose in the June 28 Geophysical Research Letters.

Worldwide, particularly in deeply buried permafrost and in high-latitude ocean sediments where pressures are high and temperatures are below freezing, icy deposits called hydrates hold immense amounts of methane (SN: 6/25/05, p. 410). Studies indicate that seafloor sediments beneath the Kara, Barents and East Siberian seas in the Arctic Ocean, as well as the Sea of Okhotsk and the Barents Sea in the North Pacific, have large reservoirs of the planet-warming greenhouse gas, says study coauthor Scott M. Elliott, a marine biogeochemist at Los Alamos National Laboratory in New Mexico.

Many oceanographic surveys have already discovered plumes of methane rising from the ocean floor, particularly in the Arctic, Elliott notes. The climate warming expected in coming decades will likely extend even into the deep sea, melting or destabilizing hydrates and releasing their trapped methane, he explains. Some scientists estimate that increased temperatures across some swaths of ocean floor between 300 and 600 meters deep — where methane hydrates are now stable but may not be in the future — could eventually release as much as 16,000 metric tons of methane each year.

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New Quantum Theory Separates Gravitational and Inertial Mass

Saturday, July 17th, 2010

The equivalence principle is one of the corner stones of general relativity. Now physicists have used quantum mechanics to show how it fails.

The equivalence principle is one of the more fascinating ideas in modern science. It asserts that gravitational mass and inertial mass are identical. Einstein put it like this: the gravitational force we experience on Earth is identical to the force we would experience were we sitting in a spaceship accelerating at 1g. Newton might have said that the m in F=ma is the same as the ms in F=Gm1m2/r^2.

This seems eminently sensible. And yet it is no more than an assertion. Sure, we can measure the equivalence with ever increasing accuracy but there is nothing to stop us thinking that at some point the relationship will break down. Indeed several modifications to relativity predict that it will.

One important question is what quantum mechanics has to say on the matter. But physicists have so far been unable to use quantum theory as a lever to tease apart the behaviour of inertial and gravitational mass.

All that changes today with the extraordinary work of Endre Kajari at the University of Ulm in Germany and a few buddies. They show how it is possible to create situations in the quantum world in which the effects of inertial and gravitational mass must be different. In fact, they show that these differences can be arbitrarily large.

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Maslow’s Pyramid Gets a Makeover

Saturday, June 26th, 2010

– I was very gratified to see this article.   It makes a point regarding basic human drives (see Biological Imperatives) that I have thought was central for a long time.

– I expect to see this view of things begin to inform discussions of why human behavior is so maladaptive with regard to our environment.

– At some point, I hope, a perception will grow that we cannot understand our irrational and maladaptive behaviors vis-à-vis our environment until we understand how those behaviors were shaped by evolutionary pressures.

– Then we will begin to see why we believe nearby events are more significant than remote ones; in both space and time.  Why we seek to acquire things long past any conceivable need for them.   And why concrete ideas seem more real to us than abstract ones.

– Within these, as well as other insights from Evolutionary Psychology, lie the seeds of our destruction or of our redemption.

– I suspect that the SETI Search for Extra -Terrestrial Intelligence has found the stars to be so silent because correctly responding to these understandings requires an act of transcendence so profound that most species, having just evolved into their technological adolescences, simply cannot process the insights and their implications before they’ve destroyed themselves by ruining the cradle environment under their feet.

– See this poem for another view of this idea.

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What are the fundamental forces that drive human behavior? A group of evolutionary thinkers offer an answer by revising one of psychology’s most familiar images.

Abraham Maslow’s Pyramid of Needs is one of the iconic images of psychology. The simple diagram, first introduced in the 1940s, spells out the underlying motivations that drive our day-to-day behavior and points the way to a more meaningful life. It is elegant, approachable and uplifting.

But is it also out of date?

That’s the argument of a team of evolutionary psychologists led by Douglas Kenrick of Arizona State University. In the latest issue of the journal Perspectives on Psychological Science, they propose a revised pyramid, one informed by recent research defining our deep biological drives.

Their new formulation is intellectually stimulating, but emotionally deflating. “Self-actualization,” the noble-sounding top layer of Maslow’s hierarchy, in their model has not only been dethroned, it has been relegated to footnote status. It has been replaced at the top with a more mundane motivation Maslow didn’t even mention: “Parenting.”

The new pyramid is based on the premise that our strongest and most fundamental impulse, which shapes our day-to-day desires on an unconscious level, is to survive long enough to pass our genes to the next generation. According to this school of thought, backed by considerable — though not irrefutable — evidence, all our achievements are linked in one way or another to the urge to reproduce.

In other words, aside from our powerful brains, we’re pretty much like every other living creature.

Given that we humans like to think of ourselves as special, this new pyramid will surely encounter strong resistance. But it could also become a shorthand way to clarify the often-misunderstood concepts of evolutionary psychology, which, its advocates insist, are not as meaning-denying and ego-deflating as we might think.

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– Research thanks to Kael

Rising costs hit EU’s nuclear dream

Tuesday, June 8th, 2010

– A sad business this.   Fusion is one of the few possibilities out that that is almost all benefit and little downside.   Imagine a world with nearly unlimited power.

– But, the problem with short-term and long-term thinking, in which humans are so poorly balanced, has led us away from this goal again and again.   And, now that we’re reaching the limits of the current petroleum-based energy systems, we’re going to find out the hard way what this lack of long-term focus is going to cost us.

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The cost of an ambitious international nuclear fusion project has trebled in three years, scientists say, prompting fears the work may be scrapped.

At the same time, financial crises have beset all the nations involved in the project.

As a result, construction of the International Thermonuclear Experiment Reactor (Iter) at Cadarache in France has been pushed back from 2015 to 2019, and more delays are likely.

Some scientists say there is a risk that the entire project could be cancelled. The original price tag was €6 billion. ($11 billion). The latest estimate is €18 billion.

Because it is hoped that fusion plants could one day supply the world with cheap, non-polluting power, the crisis facing Iter is a substantial threat to plans to tackle world energy and climate problems.

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Nun Excommunicated For Allowing Abortion

Monday, May 24th, 2010

– It is hard to see how an organization that is concerned about diminishing membership and public skepticism can make errors like this.   Pedophile priests get a pass but a nun acting out of deep compassion gets the axe.

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May 19, 2010

Last November, a 27-year-old woman was admitted to St. Joseph’s Hospital and Medical Center in Phoenix. She was 11 weeks pregnant with her fifth child, and she was gravely ill. According to a hospital document, she had “right heart failure,” and her doctors told her that if she continued with the pregnancy, her risk of mortality was “close to 100 percent.”

The patient, who was too ill to be moved to the operating room much less another hospital, agreed to an abortion. But there was a complication: She was at a Catholic hospital.

“They were in quite a dilemma,” says Lisa Sowle Cahill, who teaches Catholic theology at Boston College. “There was no good way out of it. The official church position would mandate that the correct solution would be to let both the mother and the child die. I think in the practical situation that would be a very hard choice to make.”

But the hospital felt it could proceed because of an exception — called Directive 47 in the U.S. Catholic Church’s ethical guidelines for health care providers — that allows, in some circumstance, procedures that could kill the fetus to save the mother. Sister Margaret McBride, who was an administrator at the hospital as well as its liaison to the diocese, gave her approval.

The woman survived. When Bishop Thomas J. Olmsted heard about the abortion, he declared that McBride was automatically excommunicated — the most serious penalty the church can levy.

“She consented in the murder of an unborn child,” says the Rev. John Ehrich, the medical ethics director for the Diocese of Phoenix. “There are some situations where the mother may in fact die along with her child. But — and this is the Catholic perspective — you can’t do evil to bring about good. The end does not justify the means.”

Ehrich adds that under canon or church law, the nun should be expelled from her order, the Sisters of Mercy, unless the order can find an alternative penalty. Ehrich concedes that the circumstances of this case were “hard.”

“But there are certain things that we don’t really have a choice” about, he says. “You know, if it’s been done and there’s public scandal, the bishop has to take care of that, because he has to say, ‘Look, this can’t happen.’ ”

A Double Standard?

But according to the Rev. Thomas Doyle, a canon lawyer, the bishop “clearly had other alternatives than to declare her excommunicated.” Doyle says Olmsted could have looked at the situation, realized that the nun faced an agonizing choice and shown her some mercy. He adds that this case highlights a “gross inequity” in how the church chooses to handle scandal.

“In the case of priests who are credibly accused and known to be guilty of sexually abusing children, they are in a sense let off the hook,” Doyle says.

Doyle says no pedophile priests have been excommunicated. When priests have been caught, he says, their bishops have protected them, and it has taken years or decades to defrock them, if ever.

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– research thanks to Han D.

Mystery Disease Linked to Missing Israeli Scientist

Tuesday, May 11th, 2010

– I’ve known about this for at least two years.  I remember writing an E-Mail to a friend of mine from Oregon with a persistent cough and asking if she’d spent much time on Vancouver Island in Canada.

– Now, this latest story suggests a link to a renegade Israeli scientist.   This, in turn, reminded me of a little known book by Frank Herbert (famous for being the author of Dune).  This book I’m reminded of was called The White Plague and bears some similarities to what the article is suggesting.

– My university degree (BS) is in Medical Microbiology and I find all of this terrifying food for thought.

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Media outlets across the Northwest United States began reporting on April 24 that a strange, previously unknown strain of virulent airborne fungi that has already killed at least six people in Oregon, Washington and Idaho is spreading throughout the region. The fungus, according to expert microbiologists, who have expressed alarm about the emergence of the strain, is a new genotype of Cryptococcus gatti fungi. Cryptococcus gatti is normally found in tropical and subtropical locations in India, South America, Africa and Australia. Microbiologists in the United States are reporting that the strain found here, for reasons not yet fully understood, is far deadlier than any found overseas.

Physicians in the Pacific Northwest are reporting that an undetermined number of people in the region are ill from the effects of the strange strain. Physicians also say that the virulent strain can infect domestic animals as well as humans, and symptoms do not appear until anywhere from two to four months after exposure. Symptoms in humans include a lingering cough, sharp chest pains, fever, night-sweats, weight-loss, headaches and shortness of breath. The strain can be treated successfully, if detected early enough, with oral doses of antifungal medication, but it cannot be prevented, and there is no preventative vaccine. Undiagnosed, the fungus works its way into the spinal fluid and central nervous system and causes fatal meningitis.

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Magnets ‘can modify our morality’

Thursday, April 1st, 2010

– I have some odd and off the beaten path interests.  One of them centers around techniques developed more than a decade ago by Dr. Michael Persinger of Laurentian University in Canada.

– This link will give an explanation: 

– The article, below, was sent by a friend who knows of my interests in this area and it does, indeed, make for interesting reading.

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Scientists have shown they can change people’s moral judgements by disrupting a specific area of the brain with magnetic pulses.

They identified a region of the brain just above and behind the right ear which appears to control morality.

And by using magnetic pulses to block cell activity they impaired volunteers’ notion of right and wrong.

The small Massachusetts Institute of Technology study appears in Proceedings of the National Academy of Sciences.

Lead researcher Dr Liane Young said: “You think of morality as being a really high-level behaviour.

“To be able to apply a magnetic field to a specific brain region and change people’s moral judgments is really astonishing.”

The key area of the brain is a knot of nerve cells known as the right temporo-parietal junction (RTPJ).

The researchers subjected 20 volunteers to a number of tests designed to assess their notions of right and wrong.

In one scenario participants were asked how acceptable it was for a man to let his girlfriend walk across a bridge he knew to be unsafe.

After receiving a 500 millisecond magnetic pulse to the scalp, the volunteers delivered verdicts based on outcome rather than moral principle.

If the girlfriend made it across the bridge safely, her boyfriend was not seen as having done anything wrong.

In effect, they were unable to make moral judgments that require an understanding of other people’s intentions.

Previous work has shown the RTPJ to be highly active when people think about the thoughts and beliefs of others.

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– Research thanks to Alan T.

The Unpersuadables

Tuesday, March 23rd, 2010

In fighting for science, we subscribe to a comforting illusion: that people can be swayed by the facts.

By George Monbiot. Published in the Guardian 9th March 2010.

There is one question that no one who denies manmade climate change wants to answer: what would it take to persuade you? In most cases the answer seems to be nothing. No level of evidence can shake the growing belief that climate science is a giant conspiracy codded up by boffins and governments to tax and control us. The new study by the Met Office, which paints an even grimmer picture than the Intergovernmental Panel on Climate Change(1), will do nothing to change this view.

The attack on climate scientists is now widening to an all-out war on science. Writing recently for the Telegraph, the columnist Gerald Warner dismissed scientists as “white-coated prima donnas and narcissists … pointy-heads in lab coats [who] have reassumed the role of mad cranks … The public is no longer in awe of scientists. Like squabbling evangelical churches in the 19th century, they can form as many schismatic sects as they like, nobody is listening to them any more.”(2)

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