Tuesday’s collection

*  Geosequestration – Just Give Up

A geophysicist talks about how pumping large amounts of CO2 into the ground is often likely to cause sesmic activity, and although it may not be much on the surface, it may be enough to break the resevoir itself. But the most obvious problem is the sheer scale you would need to make a difference:

The other complication, Zoback said, is that for sequestration to make a significant contribution to reducing carbon dioxide emissions, the volume of gas injected into reservoirs annually would have to be almost the same as the amount of fluid now being produced by the oil and gas industry each year. This would likely require thousands of injection sites around the world.

"Think about how many wells and pipelines and how much infrastructure has been developed to exploit oil and gas resources over the last hundred years," he said. "You need something of comparable scale and volume for carbon dioxide sequestration."...

There are two sequestration projects already underway around the world, in Norway and Algeria, and so far they appear to be working as planned. But Zoback said 3400 such projects would be needed worldwide by midcentury to deal with the volume of carbon dioxide that we will be generating. "Finding that many ideal sites around the globe is not impossible, but it is going to be a tremendous challenge," he said.

*   Ron Paul – rants ahead

Slate notes that Ron Paul getting a position on a House financial committee is not universally welcomed by libertarians:

"Republicans stashed him in this job because they don't want him making more important decisions," said Megan McArdle, a prominent libertarian blogger and economics editor of the Atlantic. "He cares passionately about monetary policy, which most Republicans don't care about. But when you look at his speeches, he doesn't understand anything about monetary policy. He might actually understand it less than the average member of Congress. My personal opinion is that he wastes all of his time on the House Financial Services Committee ranting crazily."…

The anti-Paul case consists of one simple argument—he sounds crazy—and one complex argument, which is that he's distracted libertarians and Tea Partiers by focusing their ire on the easily demonized Fed.

 

* Colbert and the big kids

This was a pretty interesting, light hearted interview with Eisenhower’s grandson and Nixon’s daughter, who are married.  They’ve got a book out about Eisenhower coped with retirement:

The Colbert Report	Mon - Thurs 11:30pm / 10:30c
David Eisenhower & Julie Nixon Eisenhower
www.colbertnation.com
Colbert Report Full Episodes Political Humor & Satire Blog March to Keep Fear Alive

Monday madness, and other stories

*   There is something seriously wrong with Liz Hurley.  A psychiatric consultation is strongly recommended, and if she doesn’t go voluntarily, a kidnapping intervention by her friends would not result in any conviction in any court of law.

*  Neil Armstrong writes an email talking about his trip to the moon.  He wants NASA to go back there.  The only thing standing in our way are politicians.

* There was a charming story in Slate recently about a 100 year old guide called “How to Write Fiction”.   Slate says “…much of Cody's advice remains startlingly recognizable: It's Writer's Digest with a handlebar mustache.” 

The article notes that there was a lot of advice around at the time directed to women in particular.  I liked this section:

The London women's magazine Atalanta launched a regular "School of Fiction" column, and its advice from 1893 on pitching remains as useful and unheeded as ever: Keep your pitch short, nail down a tangible story first, and for god's sake read the magazine before you submit to it. Ladies were then invited to try such spry writing exercises as an imagined 500-word dialogue "on the Equality of the Sexes, between Miss Minerva Lexicon, M.A., an apostle of Progress, and Miss Lavinia Straightlace, of the Old-Fashioned School."

* From the Christian Science Monitor, a story of, um, dedication to art (or at least controversy:

Swedish cartoon artist Lars Vilks, who became the target of an alleged international murder plot for his 2007 cartoons of Mohammed as a dog, again angered Muslims Tuesday by showing an Iranian film that depicts the Prophet entering a gay bar.

When Mr. Vilks showed a scene from the film at Uppsala University in Sweden, a protester charged the dais and hit him, breaking his glasses. Police were forced to detain or pepper-spray some unruly members of the crowd as other protesters yelled "Allahu Akbar" – "God is great."

For Mr. Vilks, who has booby-trapped his own house and says he sleeps with an ax beside his bed, the right to unfettered speech – regardless of whether it offends Muslims – is a point of principle.

I am kind of curious as to what Mohammed does in the gay bar in an Iranian film. 

Science, gold and ducks

It’s kind of surprising that there is still a far amount of uncertainty about the formation of planet Earth.  I didn’t realise this, for example:

The planets formed when tiny rocks collided, forming ever larger lumps. Then, after Earth was born a second planet about the size of Mars crashed into it. This cataclysmic shock blasted a huge cloud of material into orbit, where it coalesced to form the moon.

This neatly explains the moon, but poses a problem. The collision re-melted the solidifying Earth, allowing heavy materials like iron to sink into the core. But some elements, called siderophiles, dissolve in molten iron, including gold, platinum and palladium.

"We shouldn't have any siderophiles in the crust or mantle," says William Bottke of the Southwest Research Institute in Boulder, Colorado. "But actually we see them in surprising abundance."

The obvious solution is that they arrived after Earth cooled. If so then the moon should have siderophiles too, and it doesn't. Rock samples show that it has 1200 times fewer than Earth.

The article notes that the idea is that the earth was hit by a few, really big, gold bearing planetoid things, but they missed the moon on the way in.

This is a pity.  Having an gold bearing region on the Moon might make have made space exploration take a different path.

And, come to think of it, this reminds me of the classic Carl Barks Uncle Scrooge comic “The 24 Carat Moon” which I read as a child.  No doubt this was why I wanted to post about this, before I even remembered the comic.  

An important paper

Real Climate has an important post up about a paper by Dessler out this week on clouds and climate sensitivity.   The actual paper can be read here.

Basically, it analyses satellite data and suggests that increased clouds will not protect the earth from increasing temperatures, as Spencer and Lindzen have argued.  Roy Spencer also had a paper analysing satellite data out recently; until now, response to it had been strangely quiet.

Dessler does acknowledge that it will be a long time before precise long term cloud feedback is pinned down with certainty.   But the post in Real Climate is  well worth reading because it seems to put Spencer’s opinion in its eccentric context:

After reading this, I initiated a cordial and useful exchange of e-mails with Dr. Spencer (you can read the full e-mail exchange here). We ultimately agreed that the fundamental disagreement between us is over what causes ENSO. Short paraphrase:

Spencer: ENSO is caused by clouds. You cannot infer the response of clouds to surface temperature in such a situation.

Dessler: ENSO is not caused by clouds, but is driven by internal dynamics of the ocean-atmosphere system. Clouds may amplify the warming, and that’s the cloud feedback I’m trying to measure.

My position is the mainstream one, backed up by decades of research. This mainstream theory is quite successful at simulating almost all of the aspects of ENSO.

Dr. Spencer, on the other hand, is as far out of the mainstream when it comes to ENSO as he is when it comes to climate change. He is advancing here a completely new and untested theory of ENSO — based on just one figure in one of his papers (and, as I told him in one of our e-mails, there are other interpretations of those data that do not agree with his interpretation).

Thus, the burden of proof is Dr. Spencer to show that his theory of causality during ENSO is correct. He is, at present, far from meeting that burden. And until Dr. Spencer satisfies this burden, I don’t think anyone can take his criticisms seriously.

It’s also worth noting that the picture I’m painting of our disagreement (and backed up by the e-mail exchange linked above) is quite different from the picture provided by Dr. Spencer on his blog. His blog is full of conspiracies and purposeful suppression of the truth. In particular, he accuses me of ignoring his work. But as you can see, I have not ignored it — I have dismissed it because I think it has no merit. That’s quite different.

Something comes from nothing (take that, Rogers and Hammerstein)

An article at PhysOrg describes a way of making a heap of particles out of nothing. Takes a fair bit of energy though, so I don’t think we’ll be building a second earth this way anytime soon.

In other “where did this all come from?” news, I meant to note last week that Roger Penrose and a collaborator had published a paper showing nice circles in the universe’s cosmic background radiation, with the following implication :

The discovery doesn't suggest that there wasn't a Big Bang - rather, it supports the idea that there could have been many of them. The scientists explain that the CMB circles support the possibility that we live in a cyclic universe, in which the end of one “aeon” or universe triggers another Big Bang that starts another aeon, and the process repeats indefinitely.

However, according to physicist (and irritating anti-religion polemicist in the culture wars) Sean Carroll, there are two papers out already saying that the circles mean no such thing. Most interestingly, he writes how he’s got his hands on Penrose’s (recent, I think) book, and just can’t see how Penrose’s idea of a cyclic universe is supposed to happen. (Unlike the old view that the universe would contract to a Big Crunch, and maybe bounce back from that, it would seem everyone is now accepting that the universe dies in an ever expanding wimper.):

The basic point is this. The very early universe is smooth. The universe right now is lumpy, with stars and galaxies and black holes all over the place. But the future universe will be smooth again — black holes will evaporate and the cosmological constant will disperse all the matter, leaving us nothing but empty space. (Just wait about 10¹⁰⁰ years.) So, Penrose says, we can map the late universe onto a future phase that looks just like our early universe, simply by a conformal transformation (a change of scale). Do this an infinite number of times, and you have a cyclic cosmology — the universe goes through a series of “aeons” that start with a smooth Big Bang, get lumpy as structure forms, smooth out again, and then gets matched onto another smooth Big-Bang-like phase, etc.

If you’re sketchy on that last bit, join the club. Sure, mathematically we can map the smooth late universe onto the smooth early universe. But what physical process would actually cause that to happen? Despite having the book in my hands, I’m still unclear on this. (I absolutely confess that the answer might be in there, but I simply haven’t read it carefully enough.) While the early and late universes are both smooth, they are very different in other obvious ways, such as the energy density. What causes the low-density late universe to come alive into something like the high-density early universe? Something like that happens in the Steinhardt-Turok cyclic universe, but in order to make it happen you need to specify some particular matter fields with very specific dynamics. This isn’t a trivial task; there are things you can try, but they generally are plagued by instabilities and singularities. I don’t see where Penrose has done that, so I’m not even sure what there is to be criticized.

Penrose is getting old, but he remains a well respected figure. But it would be good to know how he thinks his cycles may happen.

Very true

Hmmm.  Seeing that a couple of weeks ago, when we had people over for lunch, I brought down the iPad and demonstrated its abilities, Danny Katz’s column today rings very true.  

And later, when using it with the kids, I found somehow the site Cute Overload, a handy way to get all of the cute, usually baby, animal photos and videos you could ever need.  This creature is not a Japanese toy, it is real, as you will see from the videos on its Facebook page.   And I did not know that dogs would do this in snow (the best parts are in the second half): 

Brooker on privacy

This anecdote from Charlie Brooker in The Guardian, in a column about how privacy has disappeared with modern technology, was pretty amusing:

Not so long ago, a tourist couple stopped me in the street and asked me to take a snap of them grinning in front of something vaguely picturesque (this being London, probably an especially colourful pavement puke-puddle or a tramp with a funny neck tumour). But unfamiliar as I was with the workings of their phone, instead of taking their picture, I inadvertently brought up the gallery of previous photographs, and was treated to a view of one of them in the shower, followed by a series of close-up views of various biological and overwhelmingly intimate occurrences involving the pair of them.

As I fumbled with menus, trying not to betray my embarrassment, I glimpsed at the man and something in his eyes told me that he knew, somehow, what had happened, but couldn't snatch the phone off me for fear of embarrassing his girlfriend, who remained oblivious. Eventually I took the photo. His smile was fixed and unconvincing. I handed the device back. She thanked me. He stared at the ground. We went our separate ways in silence. Somehow, it was as if we'd all taken part in a terrible threesome....

... By the year 2022, there'll be a naked photo of everyone on the planet lurking somewhere in the interverse. You might as well take a really good one this afternoon, while you're young and pliable, and upload it yourself before some future peeping-tom equivalent of WikiLeaks does it for you.

It got 5 stars from Benedict

From a column in the Catholic Herald, noting that in the long interview most noted for its condom comments, Pope Benedict also mentioned that he felt priests should live in communities.  The column then notes:

There is no need to cite the obvious dangers arising from isolation; this and its consequent loneliness are quite bad enough in themselves. Even Pope Benedict – who might be described as a kind of ‘prisoner in the Vatican’ – fondly describes his own little “community” within its walls: he, his two secretaries and the four nuns who look after them, share meals, watch DVDs together and join in the celebration of Mass and each other’s birthdays. I am sure this small community helps to make the burdens of his office more endurable and less lonely.

Funny, but I never imagined the Pope's domestic life as being a bit like a (celibate) university student share house. I hope they share a beer while watching the latest overnight hire DVD from Vaticanbuster.

Because it will annoy Philip Pullman

There's a so-so review of Voyage of the Dawn Treader that has this comparison between three current fantasy series, which amused me quite a bit:

To describe the overall series comparatively, Narnia is the dorky Bible-basher at the back of the class whilst Harry Potter is the popular, apolitical kid who gets all the attention. His Dark Materials is, of course, the atheist drop-out brooding over a gun collection.

More miscellany

Spies:    the US secret orbiting shuttle-lite returns to earth.   I expect a villain holding a cat was inside.

Fooling the Nazis:  the BBC has an article about that famous deception involving floating a dead tramp in Spanish waters with fake invasion plans.   I see he had been kept on ice for three months before embarking on his mission.

Holiday destination I could happily avoid:  Another BBC story on a salt lake in Djibouti, which has summer temperatures of 55 degrees (and 34 degrees in winter.)    Yet some people like it that way:

Like Ali, Mohamed says he is pinning his hopes for the future of Lake Assal, on tourists coming to look at it.

The first plush hotel has sprung up in Djibouti. It has two swimming pools and hot and cold running water.

But the water still smells of desalination chemicals and tastes of salt.

Its guests are mostly foreign military on rest and recuperation, visiting diplomats, and NGO staff.

I ask Ali why he and the other families do not leave and look for work in Djibouti town.

He says: "We were born here. We love Lake Assal. We like the heat, we just want more water."

Bacteria in the news

The Science Show has an good story on the strangeness of the arsenic utilising bacteria that NASA announced last week.  Interestingly, the woman who found them had predicted they should exist.  Very clever.  Physicist author Paul Davies was involved too.   He summarised the discovery as follows:

This is the first time that any living organism has been found that can operate outside of the six basic elements on which all hitherto known life depends, which is carbon, hydrogen, nitrogen, oxygen, sulphur and lastly phosphorus. It's replacing phosphorus with arsenic. And it's doing this not just in a casual way, not just by stripping the energy out. We have known organisms that will do this. The way I best describe it is that they smoke the arsenic without inhaling it. These are organisms that take the arsenic into their innards, into their vital biological machinery, incorporating it into their biomass. So what we're dealing with here is a radically new type of organism. It's not just an outlier on the known spectrum of life.

And in other new bug news, it turns out that it is bacteria that are eating away the poor old Titanic:

Microorganisms collected from a "rusticle" – a structure that looks like an icicle but consists of rust – are slowly destroying the iron hull of the liner on the seabed 3.8km (2.36 miles) below the Atlantic waves where it plummeted, killing 1,517 people, in April 1912.

The newly identified species, while potentially dangerous to vital underwater installations such as offshore oil and gas pipelines, could also offer a new way to recycle iron from old ships and marine structures, according to the researchers from Dalhousie University in Halifax, Canada, and Seville University in Spain. The discovery of the bacterium, now named Halomonas titanicae, will be reported in the International Journal of Systematic and Evolutionary Microbiologyon Wednesday. When the researchers tested its rusting ability in the lab, they found that it was able to adhere to steel surfaces, creating knob-like mounds of corrosion products.

I wonder if some new bug that would be helpful for terraforming Mars will be found soon. 

Catch up time

Three other things of interest to your humble blogger over the last week:

* Religion: Ross Douthat’s essay on contraception and the Catholic Church (inspired, of course, by a certain Papal comment on condoms) has been around a couple of weeks now, but it is the best commentary on it I have read. He is a very good writer, and I should remember to read him more regularly.

* Science: a too detailed by far article from arXiv on working out whether the entire universe, including space-time “is emergent from the quantum-information processing”. I see that Wikipedia has a fairly long article on the “ it from bit” idea, but I haven’t read it yet.

* Sex: Prostitution is, apparently, incredibly popular in Spain:

Prostitution is so popular (and socially accepted) in Spain that a United Nations study reports that 39 per cent of all Spanish men have used a prostitute's services at least once. A Spanish Health Ministry survey in 2009 put the percentage of one-time prostitute users at 32 per cent: lower than the UN figure, perhaps, but far higher than the 14 per cent in liberal-minded Holland, or in Britain, where the figure is reported to oscillate between 5 and 10 per cent. And that was just those men willing to admit it.

The article suggests that this has something to do with Franco, which I think is a bit of a stretch. Given its embrace of gay marriage, as well as commercial straight sex, I’m sure this country must be a big disappointment to the Pope.

Dawn Treader noted

The family had a pleasant day out seeing Voyage of the Dawn Treader yesterday.

To my surprise, my son said afterwards that it was the best of the trilogy, but he’s got a bit of a thing going about ships at the moment. I found it a very mixed bag. My main problem is that, whereas I felt the first two movies were very well directed by former animation director Adam Adamson, there is nothing noteworthy at all about the direction of Michael Apted in VDT. Maybe this should not have mattered, given that it is less of an action/battle story than the first two, but I think it does account for some of the attempts at humour really just falling flat with the audience, and the action scenes that are there are just not as well done as they have were in previous movies. (Honestly, the one-on-one, near climatic, fight between Peter and Miraz in Prince Caspian made a worthy comparison with anything Ridley Scott has done.)

My other major concern for the film is that, based on some internet comments, I saw it in 2D, as the 3D version was only decided to be made in the post production conversion process that many critics claimed was unbearable in Clash of the Titans. To do 3D well, you have to plan for it from the start, and be sure that scenes are not over-edited so as to allow time for the brain to “see” the 3D clearly.

Even though I was watching it in 2D, I felt sure I could see where the problems of the 3 D version would exist, and I think many more critics (once reviews from North America start appearing) are going to be dissing the 3D version. I would not be surprised if that hurts its box office.

On the good side: although it’s been decades since I read the book and I recall little about it, the changes made to the story appeared reasonable to me, and as with the previous movies, are within the spirit of the source material. It was always going to be a challenge to make an episodic storyline into a smooth flowing movie, but they succeeded in that pretty well. The movie does not drag at all. That’s not to say the script is perfect; I’m sure I would have suggested some changes if I were in charge.

And still, I remain a sucker for the emotional power of Aslan whenever he makes and appearance in the films. It’s not that the books were important to me as a child; I only read them as a young adult after I read most of Lewis’ serious books. But the realisation of Aslan in the films, being as it is entirely consistent with the robust view of Christianity that Lewis held, is their best achievement.

Interestingly, at the end of the film yesterday, the audience was surprised when, just as the credits started, an earnest young man down the front stood up and announced loudly that he was there to tell us all that “Aslan is Christ, and He wants each of you to know him…” etc. The volume of the title song then tended to drown him out, but it was the first piece of cinema preaching I had ever encountered. I would have preferred a more subtle form of evangelising (perhaps quietly hand out invitations to church), but I couldn’t condemn his effort anyway.

Drinking ages considered

Oh.  I had missed the fact that:

A wave of respected medical opinion has signalled its support for raising the legal drinking age since the proposal [to raise drinking age to 21] was brought up in the NSW Parliament more than a week ago.

The article notes the effect of raising the age in the States:

Professor Swartzwelder cites a decade's worth of research from the Harvard School of Public Health College Alcohol Study, which followed the drinking patterns of 18- to 20-year-old students. The research found that the raised legal age of 21 had created extremes in behaviour.

The law not only increased the proportion of students abstaining from alcohol but also the proportion of students engaging in illegal and dangerous binge-drinking episodes.

I find that a little odd:  why drink quicker and heavier just because you shouldn't be drinking?

Anyhow, it’s an interesting question, the effectiveness of drinking age prohibition in different cultures.  I’ve mentioned before how Japan enthusiastically runs on alcohol, to the extent that advertisements for imitation beer for the kiddies can  appear on television.  While it has a drinking age of 20,  it still seems to be the case that, even though underage drinking has been increasing in the last decade or so, it is still not in the same league of problem that it is in the US.  Certainly, it is not such a significant problem that beer can’t (famously) still be found in vending machines on the street.  (The number of machines has been wound back, though.)   

I wonder if part of this might be because they do make more of a fuss of "coming of age" generally.  It's a holiday every January:

Coming of age ceremonies (成人式, Seijin-shiki) are generally held in the morning at local city offices. All young adults who turned or will turn 20 between April 1 of the previous year and March 31 of the current one and who maintain residency in the area are invited to attend. Government officials give speeches, and small presents are handed out to the newly-recognized adults.

I guess it's hard to import one cultural celebration into another (although it works if it's something like Halloween,) but this sort of public endorsement of the importance of the transition to adulthood is something pretty much lost in the West  (if it ever really was there, I suppose.  I don’t think celebrating 21st birthdays was ever really as significant as the Japanese system.)  

I’ll mark this down as something to institute upon my much anticipated ascendancy to benevolent dictator of Australia, together with an increase in drinking age to 20.  That’s one way to put the dampener on Schoolies Week.

Christmas Dinner at the Assange house

I don’t really understand how people can think there is a justification for Wikileaks releasing thousands of diplomatic exchanges, and letting the fallout, um, fall where it will.  I mean, I know that there is an initial pleasure of hearing secrets, and having nation’s real assessments of their friends and neighbours made perfectly clear, but surely it doesn’t take much reflection to realise that international diplomacy is very similar to ordinary personal relationships writ large.   Just as it doesn’t pay to always be upfront about your feelings and assessments when you’re, say, having Christmas lunch with a relative whose company you don’t particularly relish, there are reasons why nations says things between themselves that are best kept secret.

I was happy to see that this was brought out in a recent Q&A in the Guardian when Julian Assange was asked:

I am a former British diplomat. In the course of my former duties I helped to coordinate multilateral action against a brutal regime in the Balkans, impose sanctions on a renegade state threatening ethnic cleansing, and negotiate a debt relief programme for an impoverished nation. None of this would have been possible without the security and secrecy of diplomatic correspondence, and the protection of that correspondence from publication under the laws of the UK and many other liberal and democratic states. An embassy which cannot securely offer advice or pass messages back to London is an embassy which cannot operate. Diplomacy cannot operate without discretion and the protection of sources.

In publishing this massive volume of correspondence, Wikileaks is not highlighting specific cases of wrongdoing but undermining the entire process of diplomacy. If you can publish US cables then you can publish UK telegrams and UN emails.
My question to you is: why should we not hold you personally responsible when next an international crisis goes unresolved because diplomats cannot function.

To which the boy of many hair styles  non-answers:

Julian Assange:
If you trim the vast editorial letter to the singular question actually asked, I would be happy to give it my attention.

Maybe Julian is all high-minded and a devotee of Kant at his most idealistic, who argued there was never any room for lies, ever.  If so, I hope Assange is consistent, and has Christmas days like this:

Mother:  Julian, so nice that you could make it.  Look, your brother George and his new partner Andrea are here.

Julian:  George!   Yet another woman who’s moved in with you?  Let’s see if it can last more than a year this time; they usually suss you out before then, don’t they?   I hope you’ve had the chlamydia you caught from the last one treated.  (Yes, guess which department the last leak came from.)  And don’t worry, the string of bastard children you’ve left behind you are on the public record already; it’s not like they’re a secret from anyone.

Curse you, advertising (a brief observation)

It was quite a few years ago now, I think, that there was an advertisement on TV in Australia for some new, small-ish car (perhaps a Nissan?) aimed at the Gen X set which actually showed as a feature a hook on the side door from which you could hang the plastic bad holding your takeaway food while you speed home to your inner city apartment. 

Ha, I laughed.  What a ridiculous idea that someone would buy a car for a gimmicky hook to help carry take away food.

But now, whenever I am bringing Chinese or Thai food home, and trying to turn corners gently so that the stack of plastic containers in the plastic bag doesn’t topple over, open and start spilling green curry (or some such) on the floor, I think to myself “gosh, it would useful to have one of those fast food hooks in this car.”

I feel certain this is going to haunt me for the rest of my life.

Yet more on small nuclear

I mentioned small nuclear power generators once already today, but I didn't realise that a good, fairly recent article had just appeared at Discover too.

There are several companies vying to get the lead in these new-ish breed of reactors. Toshiba's is small but has a long, long life:

Toshiba’s 10-megawatt reactor design promises to be a marvel of low maintenance. It is intended to be sealed and run for up to 30 years without refueling, relying on uranium enriched to nearly 20 percent uranium-235. (Typical reactors use a mix that is only about 5 percent energy-rich uranium-235; the rest is more common uranium-238.) Hyperion’s 25-megawatt prototype, which is based on technology developed at nearby Los Alamos National Laboratory and is similar to reactors long used on Russian submarines, gets by with more conventional levels of uranium enrichment but could still run 8 to 10 years without refueling.

There's another company working on a high pressure water cooled one, but the Toshiba and Hyperion designs use molten sodium and lead bismuth (respectively.) The article says:

Without the risk of water boiling, the reactors can run at higher temperatures, producing enough heat to extract hydrogen from water for use in fuel cells. And if one of these reactors melted open, there would be no venting, just a well-contained hot mess underground.

Well, I'm not sure residents nearby will feel so comfortable about such a leak.

This is the thing that does give me reservations: the articles about these usually say that mini nukes are intended to be buried. But surely that is an issue for an country or region that is earthquake prone. I'm not entirely sure why burying is seen as the attractive option (I think it is meant to provide terrorist resistance, but I am not sure if there are other operational reasons for it.) I suspect most people would prefer to keep the things above ground, even if it means paying for a well armed security force.

All very interesting anyway.

A whole bunch of links

I’m not sure how blogging will go this week. I’ve got a major change to software and the office network going on, as well as a Great Big Tax Catch Up to worry about.

But I’m still reading the net and saving links for later. Here’s a bunch of them for your reading pleasure:

* well, let’s start with one from last month that I forgot to talk about: pancreatic cancer is a nasty thing, and it appears it lurks around for decades before it finally reveals itself, and then it’s usually too late:

Genetic analysis of tumours by the Howard Hughes Medical Institute and Johns Hopkins University suggested the first mutations may happen 20 years before they become lethal….

The Pancreatic Cancer Research Fund welcomed the findings, but said that research was underfunded in the UK.

Chief executive Maggie Blanks said: "Survival rates have not improved in the past 40 years and whilst the disease is the UK's fifth biggest cause of cancer death, it receives less than 2% of overall research funding.

It does seem odd that such a big cancer gets so little funding. Some cancers lead a charmed life as far as funding is concerned. Others are the crazy axe wielding psychopath bridesmaid that never catches the bouquet.

* Speaking of cancer, there was a good article in The Independent about how radiation is our friend. Sort of. In low doses. I didn’t know many of things noted in the report:

One striking piece of evidence for this comes from radiologists themselves. They spend their professional lives exposed to radiation, in the form of X-rays and computed tomography (CT) scans, so you might expect them to have higher rates of cancer. But they don't. They have less cancer and they live longer than physicians in other specialities.

With modern safety measures, the actual dose received by radiologists is only slightly higher than for the general population. But that may be enough to give them an advantage. Sir Richard Doll, the leading Oxford epidemiologist who first linked smoking with lung cancer in the 1950s, published a study of British radiologists in 2003 which showed that those who entered the profession between 1955 and 1970 had a 29 per cent lower risk of cancer (though this was not statistically significant) and a 32 per cent lower death rate from all causes (which was statistically significant) than other physicians.

A similar study in the US compared workers servicing conventionally powered and nuclear-powered ships. Significantly lower death rates were found in the nuclear workers compared with the others.

* Did Harrison Ford have one too many drinks in the Green Room before this Conan O’Brien interview? Quite possibly, but it’s still a funny interview.

* I’ve been complaining for years that Sony would not release its e-reader in Australia. Now it finally has, and I’ve already got an iPad.

The only problem I’m finding with reading on the iPad is that I’m continually distracted to go back to the internet, or see if there is someone on line with whom to play a drawing game.

* AN Wislon gives a favourable review of a new biography of Tolstoy.

I know little of this subject, but it certainly seems an interesting one. I’ll probably get lazy and see that recent movie on DVD instead.

* A new European study indicates that more protein is a good idea for weight loss:

If you want to lose weight, you should maintain a diet that is high in proteins with more lean meat, low-fat dairy products and beans and fewer finely refined starch calories such as white bread and white rice. With this diet, you can also eat until you are full without counting calories and without gaining weight. Finally, the extensive study concludes that the official dietary recommendations are not sufficient for preventing obesity.

How much protein? It seems the successful diet was a "high-protein (25% of energy consumed), low-GI diet". I'm not sure how much protein you have to eat to get 25% of your energy.

* Barry Brook and others set out why nuclear power is the cheapest way to seriously reduce greenhouse gases in the long run.

I’m still speculating that mini nuclear reactors, if they ever get licensed, may be a faster way to scale it up than big reactors of current design; but that’s just my guess. And spreading that radiation around may well be good for us!

Sunday lunch

Spied in the yard today:

(My camera’s not working as well as it used to, but it wasn’t an expensive one in the first place.)