Limited responsibility

Well that's good. Due to a change in my electorate's boundaries, I am now living in what appears to be one of the safest Labor seats in Brisbane. Previously, I was in a seat that swung from side to side, and my vote actually mattered. Given the appalling choices this election, I kind of like the sensation of irrelevancy, at least for the moment.

The Senate remains a problem. The Greens have exactly one policy I support, but it's an important one - a carbon tax.

Both Labor and Liberal say there will be no carbon tax. Brown thinks he can force one through, and he supports a mining tax, but wants to increase the amount that can be gained from it. I generally support the mining profits tax, but don't really trust Brown's fiddle with it.

The Coalition really can't be trusted on environmental issues while there are under the sway of Abbott and his supporters.

The likely line up of independents seems very up in the air, except I think everyone expects the slightly loopy Fielding to go. I don't know anything about independents running in Queensland.

I think it is looking like, in the mix, I would probably be best off supporting Labor in the Senate, while at the same time hoping Brown wins eventually on the carbon tax.

UPDATE: courtesy of Antony Green's election site, I now have a good idea of what's going on in the Senate at Queensland level. Hey, Barnaby Joyce is up for re-election. As well as George Brandis.

Joe Ludwig is also on the card for Labor.

The game of who to put last is always a challenge. This time, it looks like a contest between both of them in the Climate Sceptics Party and the perpetual protester Sam Watson of the Socialist Alliance.

What do you know: the Australian Democrats still exist! I expect they hold their conferences in one of the meeting rooms at the local Council library.

Well, this is going to take some studying.

Rat dad research

The Brains of Our Fathers: Does Parenting Rewire Dads?: Scientific American

Just in time for Father's Day, here's talk about some research into rat fathers which might indicate why human fathers are important too:

While it appears the seed of the father-child bond is planted by supplemental neurons in a new dad, it seems a child, on the other hand, may be born with a brain that expects this bond to form in the first place.

To prove this, a few recent studies turned to a rodent that employs a remarkably familiar nest structure. Degu rats are biparental animals, which means parenting duties are split between the mothers and father. Degu fathers behave just like human fathers. They spend the early days of their pups’ lives helping with basic care, like warming and grooming. And as the pups get older, the degu fathers begin actively playing with their toddler offspring.

Researchers reasoned that absent fathers in the degu nests would create a true social and emotional void for the offspring, just as a missing dad would impact the dynamic of a human family. They found that if a rodent father remained in the nest with his pups – presumably due to the newfound bond with his offspring – his babies’ brains developed normally. But if the father was removed from the nest shortly after the birth of his pups, his newborns’ brains started to break down at the level of synapses, which are short chemical junctions in the brain that allow brain cells to communicate with each other.

All quite interesting. And you can also expect people who don't give a toss about who gets to make babies via reproductive technology to have a problem with it.

How does it smell?

Garlic good for blood pressure

Research trials by Dr Karin Ried and her colleagues from the University of Adelaide's Discipline of General Practice show that garlic could be used as an adjunct to conventional drugs for hypertension.

However, raw or cooked garlic, and garlic powder are not as effective in treating high blood pressure as aged garlic extract.

In a 12-week trial involving 50 people, Dr Karin Ried's team found that those with systolic blood pressure above 140 who took aged garlic extract capsules experienced an average systolic blood pressure 10.2mmHg lower than the control group, who took a placebo.

Sounds like a pretty good result. But how does aged garlic extract make me smell?

Cheer up, doc

A study on mental health issues shows suicide and depression are more prevalent in the medical profession than in the general public.

Research commissioned by the national depression initiative Beyond Blue has found women in the profession are two-and-a-half times more likely to commit suicide.

The study - to be presented in Adelaide today - also suggests rates of suicide for men in the medical professional are 25 per cent higher than the general public.

Story here.

Dangerous days

While in Sydney last week, we visited the Maritime Museum for the first time, and paid the extra to go on board the replica Endeavour. The photo a few posts back was of one of the windows into the (relatively large and well appointed) "Great cabin".

This proved to very interesting, and what I found most remarkable about it was the lack of headroom in the rear midshipmen mess/officers cabins. This leaflet from the museum doesn't make it clear how low it is, although it does mention that one area the marines slept in was 1.2 m high. I think the area I am talking about is a little higher, but believe me it's cramped, especially given my aversion to spending time in areas where I can't stand up straight. It was due to the ship having an extra deck built into it to accommodate the large crew to be taken on his expedition.

I was also surprised to be reminded of the large body count that Cook's most famous voyage racked up. Looking over the Wikipedia entry, we find:

* a sailor dragged overboard when he got entangled in the anchor chain

* two of Bank's servants freeze to death while trying to return to the ship in a snowstorm after rounding Cape Horn

* after stopping in Batavia, 30 (in a crew of 94) died from dysentery or malaria (including the ship's surgeon, and his brother)

* the museum leaflet linked above also mentions a marine who committed suicide by jumping overboard

Life was quite different in the 18 th century, hey? A wife saying goodbye to her husband at the dock when he set off on a long expedition seemingly had a pretty good chance of never seeing him again.

Torture not required

Reading terrorists minds about imminent attack: Brain waves correlate to guilty knowledge in mock terrorism scenarios

Yeah, the story's been out for a couple of weeks and maybe you've already read it, but I want to note it here for my own records.

It was pretty fascinating, if you missed it.

Both sides of the fence

I didn't get to see Four Corners last night, but I see from this report that Abbott is still trying to walk both sides of the fence, by making statements that will appeal to climate skeptics, but still making out that he is satisfied enough to spend money on reducing carbon.

If you ask me, as with his "I'm not a tech head" attitude to selling his broadband policy, Abbott comes across as lazy on detail. He'll grab a "big idea" of his own, such as his parental leave plan, and run with that as far as he can, but when it comes to anything with science content, it's all a shrug of the shoulders and admissions that he hasn't read much about it. (He said he started Plimer's disreputable book but didn't finish it. That in fact might be a good thing, but there is no indication that he has read material on the other side of the fence.)

Out there physics

Here's a paper on arXiv that I haven't had time to try and read yet, but I like the title:

Born in an Infinite Universe: a Cosmological Interpretation of Quantum Mechanics

Max Tegmark is one of the authors, and I certainly recognize his name.

Why I like the Tiger

Last week's trip to Sydney was taken on Tiger Airways again. This is at least the third time I've flown them: once to Adelaide, Melbourne and now Sydney.

The reason I fly them is, of course, the incredibly cheap fares you can find by subscribing to their email sale notifications. Apart from that, their generally bad reputation for reliability and service gives me a perverse thrill every time I take a successful trip on them.

I don't think any other airline in Australia is as ruthless with weight limits for both check-in baggage and carry on. What's more, the explanation of their rules in this regard on the internet is incredibly complicated. In some respects it seems to me that their website is positively misleading (referring to having to check baggage in 2 hours before the flight. In fact, no one will be at the counter in many of their terminals until 2 hours before the flight.) Telephoning them seems to end up putting you in contact with an overseas call centre, and the "telephone tree" didn't seem to recognize my number selections. Checking my reservation on line to make sure that I had paid for 15 kg of luggage when I booked the trip 9 months ago did not make it clear whether I had or not. (Hence the need for the lengthy call to the call centre.)

When you check in, there is normally some passengers at the desk having to do a rushed re-arrangement of the contents of their check in luggage to keep within the weight limits, or arguing over the fees they have paid.

Yet, all this means that when one successfully manages to book, pay for, and get on board a flight without drama (well, my wife had to give me some books from her carry on luggage to keep hers under 7 kg) there is the pleasant sensation of triumph over adversity, having dodged a bullet yet again, and flown this bus in the sky for a ridiculously cheap price.

Yes, I quite like Tiger Airways.

Photos from down south

More details to come.

Home

I've been away again, and now have to work to pay for it. Trip report to come.

One thing I always notice when I get back from a holiday is that going through one's regular internet haunts to catch up over a week or so only takes up a small fraction of the time that one can waste on checking the same sites every day. Perhaps if the World Wide Web was open only on Sundays, work efficiency globally would increase sufficiently that a double dip recession could be avoided.

As for politics:

* Tony Abbott gave a very crook interview on Radio National this morning, sounding particularly evasive and devious about the company levy to pay for his Swedish parental leave plan. Labor should use parts of it for last minute advertising.

* I had been contemplating making an informal vote this election*, but now that Mark Latham has endorsed that idea, even that has become unappealing. Now I need to arrange to be bedridden with some 24 hour illness so that I can not vote without appearing to be taking a lead from a walking spleen vent. (By the way, I reckon Latham looks meaner and scarier now that he doesn't wear glasses. Must be the Superman effect that previously softened his appearance somewhat.)

* at least for the House of Representatives. For the Senate, the temptation to vote all over the enormous paper just to make life difficult for the vote counter may be too much.

Things to do

I'm going to be pretty busy this week.

Here are some things to do while I'm busy and (probably) not posting:

* watch a chemo affected Christopher Hitchens talk about his illness and God stuff here. (He doesn't get upset with people praying for his recovery, by the way.)

* read about Astana, the brand spanking new capital city of Kazakhstan. As the article says "it is the world's latest example of a rare but persistent type, the capital from zero. It is in a line that includes St Petersburg, Washington DC, Canberra, Ankara and Brasilia. " As it happens, I really like planned-from-scratch cities. I just wish some country would let Disney do their capital. Then again, when you look at this photo gallery of Astana, it does look quite a lot like that already. Cool.

* Contemplate my mistake in thinking that competitive eating was as silly as competitions get. Little did I know that Finland was out-stupiding America by hosting the Sauna World Championships, which has just killed one "competitor" and sent another to hospital. Funny what can happen when the test is to see who can last longest in a 110 degree C heat:

Ladyzhenskiy and Kaukonen had made it through to the final ahead of more than 130 other participants, but six minutes into the contest, judges noticed something was wrong with the Russian, and dragged both competitors from the sauna.

Both middle-aged men were seen to have severe burns on their bodies and were given first aid after they collapsed.

* watch some video of the aftermath of a huge mudslip/flood in a part of China.

* put in an offer for a Frank Lloyd Wright house in Pasadena. The price has already been reduced 35%; you might just get a bargain.

* be charmed by the twitching nose and rapid pace of the Rufous elephant shrew in this excerpt from the great documentary series Life currently showing on ABC on Sunday nights:

Concern from the other side of the world

The Independent runs a story about some evidence given to a Northern Territory inquiry about the pretty hopeless state of child welfare in aboriginal communities there.

It certainly does seem that resources are remarkably smaller than what I would have expected:

Claims that children are starving, or "failing to thrive", were contained in a submission to the inquiry in Darwin by child protection staff from the Northern Territory. They said resources allocated to indigenous communities were "grossly inadequate" and the spectacle of children who were failing to thrive was, to them, familiar.

The Darwin-based team covers a vast area and looks after 14,000 people, but has to make do with four welfare workers and four Aboriginal community workers. That level of staffing, combined with a "fly-in, fly-out approach", allows for "little more than superficial child protection responses", the inquiry submission said.

Staff also complained about the "incredible" volume of paperwork they had to plough through, saying: "We spend more time sitting at a computer than we do with our clients and their families."...

Meanwhile, Alice Springs Hospital has told the inquiry it is used by child protection workers as a "storehouse" for children awaiting foster placement. "[We are] an acute care facility, we are not able to provide appropriate supervision of children and their families," the hospital's submission said.

Dan Baschiera, a veteran social worker, told the inquiry he had seen child protection staff fresh from years of study and training "burn up" after a few months working in Aboriginal welfare. He accused the Northern Territory government of starving the child protection system of funds.

So, what's going on?

I didn't stay at the office yesterday, fearing the local clouds of wattle pollen. But then, the day before I felt generally ill, perhaps with a chill in the evening and feeling particularly tired. Is it in fact a virus, or was the tiredness from the (according to the woman in the pharmacy and the outside of the box) a non-drowsy antihistamine tablet that I took in the morning? (Strangely, the leaflet inside the box warned that for some people, it might make them sleepy anyway.)

Anyway, the nose didn't run much at home yesterday, and I generally felt not so bad while doing some work on my laptop on the dining room table. From that position, I got to watch the birds that come to the seed we leave outside (and to use the birdbath.) We now seem to have three regular types - a couple of bossy lorikeets, a pair of spotted doves, and now some top notch pigeons too. The lorikeets can't stand sharing the seed with the doves, and spend a lot of time trying to chase them away by hopping aggressively towards them. We've tried putting two plates of seeds out, then watched the lorikeets chasing pigeons away from both of them. [And now, as I type this, a spotted dove and top notch pigeon are having it out over a plate as well.] It's hard to make different species realise there's enough for everyone.

I've also noticed that spotted doves seem a particularly amorous breed. Doesn't matter what time of year it is, they seem up for it. But as far as nest building goes, they have extremely rudimentary ideas of what might be adequate. Lorikeets seem to be very private about their love life; we've never seen them do anything in or near the backyard. Maybe it's the mile high club only for them. Pigeons will try it anywhere.

I know getting wild birds too used to feeding is not supposed to be that good an idea, but we're only talking 6 regulars here, so I can't see we are going to cause any crisis to the local ecology.

So that's yesterday went; watching the local bird wars and amorous activities. Oh yeah, and peering into the computer as well. There are worse ways to pass the day.

The dreaded yellow flower

Near my office there are a few wattle trees. Every year, around this time, I either get sinus pain, or (as in this year) a full blown case of hayfever. It's then that I notice the wattles are in flower. They are evil.

Silly Brits

"Wild swimming" is apparently becoming popular in cold, polluted British waterways.  I did notice that Griff Rhys Jones seemed unusually keen on swimming in any murky brown stuff in his recent TV series about British rivers.  Odd people.

Short answer: no

The Christian Science Monitor asks the question "is the moon really a 'been there done that' world?"

The answer, of course, is "no". There was a forum at NASA last month which went into the details of why, and you can read about it at the link.

Powered by the sun

A solar salamander : Nature News

It turns out that a particular salamander incorporates photosynthetic algae in its cells:

Kerney reported that these algae are, in fact, commonly located inside cells all over the spotted salamander's body. Moreover, there are signs that intracellular algae may be directly providing the products of photosynthesis — oxygen and carbohydrate — to the salamander cells that encapsulate them.

This reminds me of the greenish, genetically engineered super bodies that were given to the aging soldiers in John Scalzi's "Old Man's War". If you're going to get into transhumanism, then incorporating chlorophyll would seem to be a good idea.

Babies at risk

Killing babies

Mary Beard discusses here on the practice in the Greco-Roman world of exposing unwanted babies. It's an unpleasant topic, but interesting.

Space airconditioning issue

I know very little about how the International Space Station works, despite my interest in all things spacey, but they have a cooling system that has gone on the blink:

The crew of the International Space Station have been forced to reduce power after half the cooling system suddenly shut down over the weekend.

Nasa officials insisted the three Americans and three Russians aboard were not in danger.

Urgent spacewalk repairs are being discussed for this week…

Flight controllers tried to restart the disabled ammonia pump early on Sunday but the circuit breaker tripped again.

Any repairs later this week almost certainly will involve replacing the faulty ammonia pump, a difficult job that would require two spacewalks, AP adds.

Two spare pumps are stored on the outside of the station.

Politics

A noteworthy addition

China Hush is a good quality blog that seems to have a new post almost every day about some odd or unusual story from China, so I’ll add it to the blogroll.

Two recent examples of its content: the proposed “straddling bus”concept which, if ever implemented, would make the morning drive alone its route pretty disconcerting; and the jarringly cutesy animated abortion ad that shows that China and huge slabs of the West are, at least in certain aspects, still culturally very far apart.

Get it while it’s hot

In Japan, eel is seen as an energy reviving summer food. This Japan Times blog post notes that no one is sure how this idea developed, although one rather mundane theory is that it was an early marketing ploy by the fishmongers of the Edo period who were having trouble “moving” their eel catch. I hope the true reason is at least a little more romantic.

Anyhow, the other reason the article is blogworthy is because it discusses eel farming . (Most eel sold in Japan is farmed.) It had never occurred to me before that the odd life cycle of the eel does not make it an ideal candidate for farming:

It’s impossible to grow unagi from eggs because despite the fact that unagi is designated as a fresh water fish, it lays its eggs in the ocean. (Anago, another eel species that is a popular dish in Japan, live in seawater their whole lives.) Their life cycle is the opposite of salmon, which lay eggs in freshwater but live their lives in the sea. In fact, no one knows precisely where unagi lay their eggs, though the most common theory is some place in the vicinity of the Marianas. After hatching the fry make their way back to Japan waterways and are caught in nets. These fry are then sold to unagi farms where they are raised to adulthood.

So that's how they do it. But it would be having a significant impact on eel numbers in the natural waterways of Japan, wouldn't it?

Germs and smarts

I missed this story when it came out in May, but I heard it being discussed on the radio today.

In mice at least, eating a common soil bacteria seems to make them learn faster.  From the Science Daily report:

"Mycobacterium vaccae is a natural soil bacterium which people likely ingest or breath in when they spend time in nature," says Dorothy Matthews of The Sage Colleges in Troy, New York, who conducted the research with her colleague Susan Jenks.

Previous research studies on M. vaccae showed that heat-killed bacteria injected into mice stimulated growth of some neurons in the brain that resulted in increased levels of serotonin and decreased anxiety.

"Since serotonin plays a role in learning we wondered if live M. vaccae could improve learning in mice," says Matthews.

Matthews and Jenks fed live bacteria to mice and assessed their ability to navigate a maze compared to control mice that were not fed the bacteria.

"We found that mice that were fed live M. vaccae navigated the maze twice as fast and with less demonstrated anxiety behaviors as control mice," says Matthews.

In the radio interview today, the researcher said they really have no idea whether the same thing happens in humans.  But all the same, it's an intriguing idea that being too hygienic may not only be bad for allergies, but might make learning slower too.

Add this to the “things I didn’t know were possible”list

Simon Dexter, a consultant at Leeds Teaching Hospitals and Meeta's surgeon, said that although it was a major operation it was possible to live without a stomach.

That’s from a BBC story about a couple of sisters in England who, due to their genetic susceptibility to stomach cancer, had theirs removed as a precaution.  Unpleasant.

Greatest scandal of 20th century revealed

Plastic Bertrand was more plastic that you knew. (Strangely, he's also morphed into Ellen DeGeneres.)

Behaviour modification required?

Last year I bought a cheap blood pressure machine from the pharmacy. I think I was a bit worried about the number of headaches my wife was having at the time, and as we don't often get our blood pressure checked, it seemed a sensible thing to do.

It indicated no big problem for either of us.

But due to a couple of mornings of dizziness on getting out of bed this week, I checked my own blood pressure again, and if this little machine is correct, it's up considerably since last year. But the readings it's giving for my wife are much worse, even first thing in the morning.

She's off to the doctor today to see if their machine agrees.

I should probably see my doctor too. There are several issues I can see that may need correcting in my current lifestyle:

1. Tony Abbott should stop improving his polling.

2. What? I can't spend a decade not bothering to get any particular exercise at all? I shake my fist at you fate. (Perhaps I shouldn't, that just made me dizzy.)

3. It's the evil influence of cheese. But is life with low fat cheese really worth living?

4. Salt. If, like me, your diet has a substantial Asian influence, salt is something that often comes in heavy doses. My impression is that nearly all men in Japan men go on blood pressure tablets from about the age of 42. (Their obligatory after work drinking sessions don't help too.)

5. Why am I cursed with a wife who is a talented baker, but with children who don't care for her cheesecakes, key lime pies (curse you, overly productive lime tree in the back yard), pecan pies, rhubarb cinnamon cakes, chocolate horns, etc? Hence, it becomes my duty to finish these desserts over 4 or 5 nights. (Neither my wife nor I actually consider ourselves to be fans of sugar or lots of cream; in fact if following an Australian recipe she often reduces the sugar by about one third and they still come out fine.) Seriously, I have asked my wife to stop making so many desserts, but she enjoys baking and resists my calls. It's a nightmare.

6. Blogging / the Internet. You mean I might be healthier by getting up and doing something, anything, physical, and going to bed a bit earlier. As well as avoiding irritants like the aggro commenters at Catallaxy? Well I'll be...

7. Lose weight. I'm pretty sure my calorie intake hasn't substantially increased over the last decade, but the kilograms surreptitiously increase anyway. We're not talking huge amounts, but photos catching me with a relaxed stomach now do embarrass me, and I know losing 5 - 6 kilos would put me in the normal BMI weight range. Maybe I should take up watching late night commercial TV for the latest exercise machine that I can pay off over four easy installments. Technology in them has improved over the last 10 years, hasn't it? In fact, the last time I lost weight was from a lingering stomach virus that reduced appetite for a good two or three weeks. Why can't that be an annual event?

8. Vitamin D. Yes, yes I am sure this is it. I get very little sun now. Happily, I see from an article in the New York Times that this is thought to be related to high blood pressure. I should be off to the pharmacy to see if vitamin D supplements will allow me to continue my sedate, sunless, salt, cheese and cheesecake eating lifestyle to continue.

Any other suggestions are welcome. Of course, we can also always hope the blood pressure machine is malfunctioning. That would be the best outcome of all.

Optimism in pigs

Can you ask a pig if his glass is half full?

Quite a charming bit of research here:

In an experiment reminiscent of Pavlov's dogs, the Newcastle team taught the pigs to associate a note on a glockenspiel with a treat -- an apple -- and a dog training 'clicker' with something unpleasant -- in this case rustling a plastic bag.

The next step was to place half the pigs in an enriched environment -- more space, freedom to roam in straw and play with 'pig' toys -- while the other half were placed in a smaller, boring environment- no straw and only one non-interactive toy.

The team then played an ambiguous noise -- a squeak -- and studied how the pigs responded. Dr Douglas said the results were compelling.

"We found that almost without exception, the pigs in the enriched environment were optimistic about what this new noise could mean and approached expecting to get the treat," she said. "In contrast, the pigs in the boring environment were pessimistic about this new strange noise and, fearing it might be the mildly unpleasant plastic bag, did not approach for a treat.

Crabb on those leaks

Annabel Crabb on those Labor leaks looks at the suspects in her own amusing way. I agree with her that the most plausible source seems Rudd. Or, I would add, persons close to Rudd who he would have the ability to call off.

Rudd's only response yesterday was via a statement from a spokesperson.

Would he not be capable of making a media appearance, not to answer questions, but simply to deny in person that he is the source of the leaks, and deny knowledge of the source, and to publicly call on the leaker to desist and get behind the re-election of a Labor government?

In any event, such anonymous leaks may perversely work (to a degree) in Gillard's favour, at least if their content is as ultimately unimportant as yesterday's. Everyone (even Laurie Oakes, I heard somewhere, although I don't know how to track down his articles on line) seems to agree that Gillard's come out fighting approach worked for her yesterday.

Real prediction vindicated

Real Climate has been running hot lately with:

a. a lengthy guest post by "Tamino" reviewing a book on the hockey stick controversy, and explaining in great detail why McIntyre is wrong. In comments, there is a full blown fisking of the Judith Curry's quasi-defence of the book and McIntyre, and she does not come out of it well.

b. a post noting the surprisingly accurate predictions of global warming from the mid 1970's by Wally Broecker, who even coined the term "global warming". The article notes:

To those who even today claim that global warming is not predictable, the anniversary of Broecker’s paper is a reminder that global warming was actually predicted before it became evident in the global temperature records over a decade later (when Jim Hansen in 1988 famously stated that “global warming is here”).

He wasn't the first to predict warming from CO2, though:

Broecker was not the first to predict CO₂-induced warming. In 1965, an expert report to US President Lyndon B. Johnson had warned: “By the year 2000, the increase in carbon dioxide will be close to 25%. This may be sufficient to produce measurable and perhaps marked changes in climate.” And in 1972, a more specific prediction similar to Broecker’s was published by the eminent atmospheric scientist J.S. Sawyer in Nature (for a history in a nutshell, see my newspaper column here).

The innovation of Broecker’s article – apart from introducing the term “global warming” – was in combining estimates of CO₂ warming with natural variability. His main thesis was that a natural climatic cooling

has, over the last three decades, more than compensated for the warming effect produced by the CO₂ [....] The present natural cooling will, however, bottom out during the next decade or so. Once this happens, the CO₂ effect will tend to become a significant factor and by the first decade of the next century we may experience global temperatures warmer than any in the last 1000 years.

The latter turned out to be correct.

For all the skeptics who thought it was only global cooling being considered in the mid 70's, this is well worth reading.

Past ocean acidification considered

Yet another study looking at what happened in a previous big event of volcano driven ocean acidification 120,000,000 years ago. Yes, shell making plankton survived, morphing into smaller sizes, but at the same time the rate of acidification, and the way it changed at depth, is very different to what's happening now:

It took at least 25,000 years for the new acidity levels reached in the surface waters to transfer to deeper waters, according to the research—and the ocean took 75,000 years to reach its peak acidity for that episode, as well as at least 160,000 years to recover. The length of this episode derives "most probably because several CO2 pulses [volcanic eruptions] contributed to ocean acidification," Erba says. Further, she plans to examine other high CO2 events in the geologic record to see "if the same causes—excess CO2, global warming, ocean acidification—trigger similar effects on marine calcifiers at different times."

But the 25,000-year time lag between acidification of the surface waters and deeper waters is mysterious, points out geoscientist Timothy Bralower of The Pennsylvania State University, who was not involved in this study. "In the modern ocean, a similar input of carbon would involve a lag on the order of centuries," he notes. "So something is very different." And the nannoconids begin to disappear even before the fossil record indicates lighter volcanic carbon isotopes—in other words, presumably before the actual acidification.

Here's the crux:

"The current rate of ocean acidification is about a hundred times faster than the most rapid events" in the geologic past, notes marine geologist William Howard of the Antarctic Climate and Ecosystems Cooperative Research Center in Hobart, Tasmania. Plus, the direct impacts of global warming may complicate the picture—just as modern coral suffer from increased bleaching thanks to warmer ocean temperatures as well as the reduced carbonate exoskeleton–building capacity brought on by ocean acidification. Bralower adds: "The big question is whether modern species will be able to adapt to what I expect will be much more rapid pH reduction in coming centuries."

Phytoplankton worry

Green wet stuff continues to make the news. A new study in Nature indicates a large decline in the amount of phytoplankton in the oceans over the last century:

Phytoplankton activity fluctuates widely according to season and location, making long-term monitoring of trends difficult. An earlier study², based on satellite observations of ocean colour, suggested a link between climate variability and ocean productivity, but this was limited to observations from 1997 to 2006. Boris Worm, a marine biologist at Dalhousie University in Halifax, Canada, and his team have now combined satellite-derived observations of phytoplankton with historical shipboard measurements stretching back to the pioneering days of oceanography.

The research reveals an unsettling centennial downwards trend, superimposed on shorter-term variability. The scientists found that the average global phytoplankton concentration in the upper ocean currently declines by around 1% per year. Since 1950 alone, algal biomass decreased by around 40%, probably in response to ocean warming — and the decline has gathered pace in recent years.

"Clearly, 40% is a huge number," says Paul Falkowski, an oceanographer at Rutgers University in New Brunswick, New Jersey. "This implies that the entire ocean system is out of steady state, slowing down.

Something to worry about? Well, yes:

"This is severely disquieting," adds Victor Smetacek, a marine biologist at the Alfred Wegener Institute of Polar and Marine Research in Bremerhaven, Germany. "One must really digest the very magnitude of this decline and its possible implications."

The culprit is believed to be ocean warming:

In most regions tested, the phytoplankton decline seems to be the result of a 0.5–1.0 °C warming of the upper ocean over the past century. The warming leads to enhanced vertical 'stratification' of ocean layers, thus limiting the supply of nutrients from deeper waters to the surface.

But ocean warming does not explain reduced productivity in regions, including the Arctic Ocean, where algal growth is mainly constrained by sunlight. So scientists must try to find out what other drivers, such as changes in wind and ocean circulation, might force the decline, says Falkowski.

No one is pointing the finger at ocean acidification yet, and (from memory) experiments with bubbling CO2 through phytoplankton have had mixed results. But there was this story recently that increased acidification may affect the availability of iron, which phytoplankton need to grow well. (There is more detail on that study at my earlier post.) So, I wonder if acidification over the last century is part of the explanation.

Fiddling with algae

The New York Times reports on a lot of work being done to genetically alter algae to make it better as a potential large scale source of biofuel.  This is being taken very seriously:

“There are probably well over 100 academic efforts to use genetic engineering to optimize biofuel production from algae,” said Matthew C. Posewitz, an assistant professor of chemistry at the Colorado School of Mines, who has written a review of the field. “There’s just intense interest globally.”

Algae are attracting attention because the strains can potentially produce 10 or more times more fuel per acre than the corn used to make ethanol or the soybeans used to make biodiesel. Moreover, algae might be grown on arid land and brackish water, so that fuel production would not compete with food production. And algae are voracious consumers of carbon dioxide, potentially helping to keep some of this greenhouse gas from contributing to global warming.

But some people are a little concerned:

At a meeting this month of President Obama’s new bioethics commission, Allison A. Snow, an ecologist at Ohio State University, testified that a “worst-case hypothetical scenario” would be that algae engineered to be extremely hardy might escape into the environment, displace other species and cause algal overgrowths that deprive waters of oxygen, killing fish.

And I guess I didn’t realise how important the humble green scum really is:

“About 40 percent of the oxygen that you and I are breathing right now comes from the algae in the oceans,” the genetic scientist J. Craig Venter said at a Congressional hearing in May. “We don’t want to mess up that process.”

 

Corals feel the heat (and the weed)

Sea surface temperatures in the Red Sea are routinely very high, I believe, but there are corals there that cope nonetheless.  There’s a convincing sounding study in Science that indicates their tolerance is approaching its limits:

Sea surface temperature (SST) across much of the tropics has increased by 0.4° to 1°C since the mid-1970s. A parallel increase in the frequency and extent of coral bleaching and mortality has fueled concern that climate change poses a major threat to the survival of coral reef ecosystems worldwide. Here we show that steadily rising SSTs, not ocean acidification, are already driving dramatic changes in the growth of an important reef-building coral in the central Red Sea. Three-dimensional computed tomography analyses of the massive coral Diploastrea heliopora reveal that skeletal growth of apparently healthy colonies has declined by 30% since 1998. The same corals responded to a short-lived warm event in 1941/1942, but recovered within 3 years as the ocean cooled. Combining our data with climate model simulations by the Intergovernmental Panel on Climate Change, we predict that should the current warming trend continue, this coral could cease growing altogether by 2070.

In other coral news, it's reported today that seaweed is encroaching on a significant number of reefs in the Great Barrier Reef, but the reason is said to be poor water quality. However,  I think it’s also worth noting that ocean acidification would be likely to increase that problem.

Her weddings must be interesting

As reported in the Geelong Advertiser:

A "witch" told a traffic cop she was above the law because she was "from another world" before dragging him at high speed down a busy street.

"Your laws and penalties don't apply to me. I'm not accepting them, I'm sorry, I must go, thank you," Eilish De Avalon said, before driving off with Sen-Constable Andrew Logan’s arm caught in her driver's side door, the Geelong Advertiser reports.

The officer was left seriously injured in the incident after being dragged nearly 200m.

De Avalon, who also told police she "had a universal name that is not recognised here", pleaded guilty in the Geelong Magistrates’ Court

And what does this local witch from another world do in her spare time?:

De Avalon, 40, a marriage celebrant who is also a self-confessed witch from the Geelong suburb of Highton

Free will, Kant, the New York Times

There’s a pretty good essay in the NYT about how whether it is right to give up on free will as a result of the experiments which show that an outsider who can read a brain state correctly can know a person’s decision before the person knows it.

Kant gets invoked to argue that free will is still there, and that the free will conundrum basically arises from not realising the limits of reason.  (I think that’s a fair summary, anyway.)

All very interesting.

More details please

Phys.org has a short report up about a new proposed method for removing CO2 from the air, but its very short on details and says nothing about cost.

I did some lengthy posts looking at CO2 removal technology over the last couple of years; I'll link to them here when I have time.

The “pox on both their houses” election continues

Tim Colebatch provides does a good summary of why a large number of voters feel very disappointed by all parties this election.

I also see that  Tony Abbott has gone into “dog whistle” mode well and truly on the Julia as a single woman issue.   I can’t see this working for him.  

Dangerous nuts

According to this report, a prominent anti-vaccination group in New South Wales is not only spreading their mis-information via the Web; they are actively pursuing those who have suffered a tragedy:

When their four-week-old baby daughter Dana died from whooping cough Toni and David McCaffery sought love and healing to ease their grief.

Instead, they say they were subjected to a campaign of harassment and abuse at the hands of anti-vaccination campaigners, a group who were yesterday labelled a serious threat to the public's health and safety….

Its investigation was sparked by two complaints, one from Toni and David McCaffery, whose four-week-old daughter Dana died from whooping cough last year.

The couple, from Lennox Head, allege they were subjected to months of harassment and abuse by Ms Dorey and anti-vaccination campaigners, accusing them of lying about the cause of their daughter's death. They received anonymous letters and emails that said whooping cough was not fatal and vaccinations were not needed.

Mrs McCaffery, whose daughter was too young to be vaccinated when she caught whooping cough, said Ms Dorey also tried to get her baby's medical records from the hospital without permission. ''Instead of love and healing in the weeks after Dana's death, we got ugliness … it has been terrible,'' she said.

It doesn’t explain why the parents were in contact with the group in the first place, but still this sounds like an appalling story.

I mentioned this anti-vaccination group late last year after they appeared on the 7.30 Report under a post headed “Immunisation Dills”.  It deserves the upgrade to “Dangerous Nuts”. 

Important advance (we hope)

There’s  a pretty big story out about how Australian based researchers have made some fundamental advances in understanding Alzheimer disease, and have been able to treat it in mice.  (Yes, I know, stories like this about potential new treatments for various diseases in humans come out all the time, but this one does sound distinctly more important, it seems to me.)

Bring on the cure, please.

Weekend update

*  Tried to make a cream and tomato pasta sauce, but using mostly low fat evaporated milk instead of cream.   (Hey, my wife fed me pork belly the previous two nights – there has to be the occasional attempt at low fat cooking while my middle age spread continues its winter growth.)  It didn’t work properly – the milk seemed to separate into solids or something, although the taste wasn’t bad.    More investigation into evaporated milk recipes needed.

*  Oh no!  Robin Hood series 3 ended on Saturday night, leading to tears not by the kids, but from the parents.   (I had actually shed a tear at the end of series 2 as well.)     It really was a quality family show – great production values, good acting,  action every episode, sometimes funny, all violence bloodless, and characters believable enough to upset you when they unexpectedly die.   (It was pretty good at the unexpected death.)   It will be missed.

* The debate between Gillard and Abbott on Sunday night (pretty much a draw I thought, although I was not sitting watching it every minute) has led to another surge in Gillard earlobe Googlers coming to this blog via my  my 2007 post-election night comment about it.  (Over a thousand a day.)   Even Channel 9 has noted that her earlobes, which looked particularly large during the debate,  had evidently become a distraction to many people on Twitter.  There is a facebook page about it (nothing to do with me), which seems also to have been created immediately after the 2007 election.   I’m not sure, but I think my mention might be a day or so earlier than the creation of the Facebook page.  Hence I am waiting for  Annabel Crabb to interview me about being the first blogger (I think) to be silly enough to note it.    

You've seen the photo; now see the video

The BBC has put up video of that remarkable incident of the whale that decided to have an on board tour of a passing yacht. As I can't embed BBC video directly, I'll put the Youtube version of it here. It's worth watching:

This week's hard to understand physics

Another week, another arXiv paper that seems important, if only I could follow it properly.

This one is about how to understand the quantum "delayed choice" experiments, which on one interpretation can be thought to show "backwards time influence".

This, according to the paper, is not the right way to think about collapsing wave functions. The crucial section of the paper seems to be this:

Although the above expressions are all very simple, the result is, upon second thought, very non-trivial. It shows that in general, the relative time ordering of measurements on separated (but possible entangled) particles A and B doesn’t matter at all....

This makes explicit that a measurement on one particle does not at all influence the other one. (I.e. the operator 1 acts trivially.) The only effect a measurement has, is changing probabilities of other measurements into conditional probabilities, as explained just above. More important, these conditional probabilities hold regardless of the moment at which you perform the measurement on the other particle. Whether it occurs later, earlier or at the same time - that doesn’t matter at all. This forces us to abandon the (popular, but incorrect) view on the wave function collapse as an event stretching out along a space-like slice. Even though this view is appealing, it creates a wrong intuition about the physics involved.

I understand the idea that he says is wrong; I don't understand the alternative way of looking at it that he is suggesting.

By the way, whatever happened to John Cramer's "backward causation" experiment? It's taking a long time for any results to come out.

She amuses me

Yet another great article by Annabel Crabb on the curious current state of the election campaign.

Pot head objections

Time magazine has a quite lengthy, quite balanced article summarizing recent research on the very complicated issue of the relationship between marijuana use and schizophrenia.

It could not be called a sensationalist or one sided article at all. Yet you can always guarantee, whenever anything in the media ever appears which looks at the issue, there'll be many comments by readers like this:

"This is the stupidest thing I have read. There own stats show no increase even though more people today are smoking pot. What kind of idiot even publishes garbage like this."

Or this:

Pot could replace something like 20% of pharmacueticals prescribed in the USA - do you know how much MONEY that would be? Doesn't take long to figure out where the propaganda is coming from when you follow the money.

It's the "it's the wonder drug of nature" crowd that really make me laugh.

White roof wonders

Climate Progress talks about the rather simple, but apparently very effective, plan to increase white roofs in America to help address warming.

Is this too complicated for Australian politicians to consider?

Pine nut alert

The LA Times mentions "pine mouth", an odd reaction which is "a bitter metallic taste in the mouth that develops after eating pine nuts and lasts for several days."

Given so much pesto is eaten nowadays, it's a wonder it doesn't happen more often.

On the menu in Vietnam

Oh. I knew there was a bar-b-q rat industry in Vietnam. I assumed that they probably ate dog. But I didn't know this:

While it is widely known that dog meat is eaten in Southeast Asia, Mr. Doan says some Vietnamese restaurants also offer cat on the menu. To keep thieves from catching an unsupervised cat to eat or sell to a restaurant, pet owners keep their felines close.

Eating cat is traditionally thought to bring good luck, according to Mai Pham Thi Tuyet, the director of the Asvelis veterinary clinic in Hanoi. But this practice is becoming less common, she says, because the improvement in the standard of living, particularly in the cities, has enabled more people to keep animals as pets.

Seems high

We're not talking America; we're talking England:

Almost one in five girls say they have been pregnant at least once by the age of 18, according to a Government survey published today.

Just under half (46 per cent) decided to keep their baby, while more than a third (36 per cent), had an abortion, the figures show. ...

The survey concluded there was a "noticeable trend" between the young women who fell pregnant by 18, and their GCSE results.

A third (33 per cent) of those who gained between one and four GCSEs at grades D-G had been pregnant at least once by the time they were 18, compared to just 6 per cent of those who scored eight or more GCSEs at Grades A*-C.

Time for some Colbert

This clip from a couple of weeks ago becomes particularly funny in the last part, regarding another egregious example of American fast food overkill:

The Colbert Report	Mon - Thurs 11:30pm / 10:30c
Thought for Food - Kentucky Tuna & Grilled Cheese Burger Melt<a>
www.colbertnation.com
Colbert Report Full Episodes 2010 Election Fox News