Showing posts with label energy. Show all posts
Showing posts with label energy. Show all posts

09 January, 2012

Asset-Stripping

What kind of rubbish is this? An online newspaper I read just published an article about an article in a print newspaper called The Australian. Since when was quoting another news outlet's opinions considered news?

The piece in The Australian - a newspaper famous here for being a mouthpiece of the Rupert Murdoch view of life and a front-runner in his stable's race to the bottom -  was about how low the planned Chinese carbon tax would be and how high the Australian one is and how "out of step" with the world our carbon tax is.

And what a surprise, a Murdoch-owned newspaper doesn't like Australia's carbon tax. Big deal. Murdoch and his cronies in the mining, coal and oil industries can spout off all they like, his opinions are hardly news any more and I'm sick of hearing them over and over from all the newspapers and TV and radio stations he owns.

The fact is, China's move to a carbon tax (however low they've started) is the most important and significant event since the Kyoto treaty was signed. It's a major triumph and I'm sure Australia's dramatic recent move had an influence. The whingers at the Australian should remember that China has already made big steps towards becoming a 21st Century, clean economy. This is another one.

If the West wants to keep up, we need to force our old industries to change - and fast. They won't do it themselves. These old, polluting dinosaurs will drag Australia down to Third World status if we let them. And when they've asset-stripped Australia, they'll move on to their next victim.

31 March, 2011

There Ought To Be A Law Against It

They should make it illegal to talk crap. I can't think of any other way to stop the flood of bullshit that threatens to drown out all sensible discourse. It should be a crime to say or write anything for public consumption that is provably wrong at the time it was said.

The irritating and most visible manifestation of the untrue rubbish people spout is in advertising. I don't just mean ads that say processed food X is "wholesome" or  indistinguishable from real food, I mean the lying nonsense about the beneficial powers of inert food supplements, or magnetic mattresses, or "quantum energised" crystals. All that New Age quackery, all that techno-babble, all that distortion and half-truth designed to mislead!

It gets beyond mere irritation when you hear garbage spoken by politicians. Many of them (particularly on the right wing) talk about medical issues, about welfare reform, about incentives, about wars on drugs, about the criminal justice system, about education and about tax reform, as if we haven't had a century of psychological studies, sociological studies, criminology, medical science, and anthropology. The evidence is all there if they had the wit to grasp it. Yet they go on, year after year telling us the answer is more police on the streets, stiffer sentences, getting back to the three Rs, sacking civil servants, etc., etc., etc.. I know politicians are just ordinary people with monster egos, and most of them don't have the intelligence to read research reports (from actual scientists, I mean, not from "think tanks"!) but if there were criminal penalties for being caught saying untrue things in public, maybe they would actually start to care about what they say.

And, of course, politicians lying to the public (wilfully or out of ignorance) can do real harm. It can blight lives and hobble whole societies. It can kill. But the people with the real power, who can do most harm, are the corporations and their various mouthpieces. We've seen endless examples of how the tobacco companies lied about the harm they cause, how the oil, coal and gas companies have lied about global warming (and pollution in general), and how the big news media corporations lie to ensure the political outcomes they favour. Yet there are no penalties. The Big Tobacco spokesperson may be responsible for thousands of deaths, but they are not tried for mass murder. The Big Oil CEO who sponsors obfuscatory research that may lead to hundreds dying in floods and droughts, doesn't face jail time, nor do the scientists who take his money and publish his papers. And the Big Pharma PR guys who tell the doctors lies about their products, are not being prosecuted wither, and nor are the doctors who sign their names to academic papers written by those same PR guys.

We live in a world where solid scientific evidence is ignored or actively disparaged, just so that people can sell you things, or feather their nest in some other way. It is a world where religious groups are allowed to teach anti-science courses which are nothing but insupportable nonsense - presumably so that young people aren't exposed to ideas or rational thinking or something equally horrible. There seems to be nothing anyone can do about all this lying and misleading and distortion and outright fraud. Or nothing anyone is willing to do. After all, the lawmakers are among the worst offenders.

Yet if there is anything there should be a law against, this is it.

13 July, 2010

Review: Why Does E=mc2? (And Why Should We Care?) by Brian Cox and Jeff Forshaw

(This review first appeared in the New York Journal of Books on 13th July 2010.)

Why Does E=mc2? is one of those questions that educated non-physicists must have been asking themselves for over a hundred years, ever since Albert Einstein derived the equation back in 1905. Now, in this easy-to-read little book from Brian Cox and Jeff Forshaw, we have the answer. The authors are both professors of physics at Manchester University, and Brian Cox is also a well-known TV personality—well known enough to warrant a jacket blurb from Stephen Fry.
The book begins with the traditional approach to explaining the slowing of clocks for observers in motion relative to one another, by examining the geometry of a light beam bouncing up and down in a moving vehicle. The authors demonstrate just how easy it is to get to Einstein’s time dilation formula using nothing more than Pythagoras’ Theorem and the knowledge that the speed of light is capped. But they don’t leave it there. In the first half of the book they consider two more approaches that lead us to the same conclusion. 
Along the way, they very cleverly introduce all the ideas we will need to get to the world’s most famous equation, E=mc2. What is more, they focus on the most puzzling part: the question of what c, the speed of light, is doing in there. Very early on, they introduce c as a scaling factor so that we can talk about “distances” in spacetime. Later, by various means, they explain why c has to be the maximum speed that anything can travel. It is a small triumph of the book that Cox and Forshaw make the attempt to show the logical necessity of there being a universal speed limit, and that their arguments are presented so clearly.
Yet, as with any book of this size tackling a subject so enormous, it is not long before the authors start asking us to take things on trust, undermining the comprehensibility of their presentation. The first big one is when they introduce Maxwell’s equations and ask us to believe they demand that the rate of propagation of an electromagnetic field be constant for all observers. Then comes the work of mathematician Emmy Noether and her demonstration that invariance leads to the conservation of quantities. 
These, and many others introduced later, are tough ideas and hard to swallow. The authors introduce them to provide alternative ways into the understanding of relativity and that famous equation. It is to their credit that they do not always hide the complexity nor the long history of ideas behind relativity, but it would have been better, perhaps, to have spent a few more pages on some of these notions. It is also to their credit that they make the case, as Feynman and others have done before them, that, at some level, the weirdness of the universe just has to be accepted, and the only test of physical theories that matters a damn is whether they are supported by actual observation and experiment.
And there would have been many pages to spare for additional background and explanation if, near the end, the book had not wandered into obscure and largely unrelated areas as it tackled a broad-brush description of the Standard Model in an attempt to explain what mass is. It was inevitable that some particle physics had to be discussed and that this would lead to discussions of quantum theory. After all, the book’s sub-title is And Why Should We Care? and the reasons given largely involve nuclear power, chemistry, and cosmology—all of which are helped by discussions at a subatomic level. Perhaps also Brian Cox’s involvement at CERN (he heads a project there to upgrade the ATLAS and CMS detectors for the Large Hadron Collider) meant that a discussion of the Higgs particle was inevitable. Nevertheless, this, and the very brief glimpse of general relativity right at the end, seemed to detract from the clarity and force of the earlier exposition.
It is a curious book that tackles several of the most difficult ideas in modern science in the tone of a friendly, almost patronizing, high-school teacher, trying to ensure that the slow kids manage to keep up with the rest of the class. The tone and the endless asides (did you know that the Sun converts 600 million tonnes of hydrogen into helium every second?) can become a bit wearing, but Cox and Forshaw have to be praised for their unwavering insistence that their subject is accessible to anyone at all who will stay with them and think about it.
In an age when most lay people throw up their hands at the mention of relativity or quantum theory, when religious creation stories and New Age mysticism offer a far simpler, less challenging route for the intellectually overwhelmed, it is hugely important that ordinary people see that physics is not just for the egg-heads, that it can be understood, and that there is a grand beauty in what it reveals about our world. Cox and Forshaw have made an important contribution in this area, one that will help school science teachers as much as it will their students.

23 December, 2009

The Price of Christmas

I see that a priest in York, England has recommended that his parishioners steal the things they need this Christmas since no-one else is going to help them out. Is conspiracy to commit a mortal sin a sin too? The theology could get tricky. However, the humanity is plain and simple. The plight of the homeless in the UK - while not nearly so bas as that of the homeless in the USA - is heart-wrenching. No decent person can witness it without revolting against the system that creates and sustains it.

And that system is capitalism.

Christmas may be a good time to remember that there is no such thing as a free lunch. The food heaped on our plates, the mostly-unwanted gifts, the treats and indulgences, the lights and the shiny, plastic baubles, all have to be paid for.

In a capitalist society, the payment is made by the consumer - you and me - from money we get by selling our labour to the people who control the capital. They get their money by selling the product of our labour back to us in the form of meals, plastic baubles and so on. The magic of capitalism is that, by this process, capital increases. Somehow value is added by the act of production. Where does it come from?

It comes from various kinds of exploitation, but two in particular: the exploitation of workers, and the exploitation of the environment. Workers are exploited by not paying them anything like the value of their product would suggest they should be paid. The excess goes to the owners of the capital. These days, when workers in the consuming countries ask to be paid more fairly, their jobs, and the exploitation, are moved overseas to places where workers are paid even less and can be more thoroughly exploited. That this leaves people with no source of income because they have lost the ability to sell their labour, might be seen as a bad thing, but for capitalism it is good, it means that labour becomes a plentiful commodity that can now be bought more cheaply. (This is also one of the reasons why capitalists like population growth.) It means that the workers who were once in danger of earning enough that they were no longer so badly exploited, but who lost their jobs, are now forced get new jobs at lower wages and be properly exploited again. To keep capital growing, exploitation of workers has to be increasingly efficient and widespread. It is called 'productivity'.

Even so, you can only take the exploitation of workers so far before the rate of increase declines. For capital to keep on growing you have to keep pumping new wealth into the system. That's where the environment comes in. Along with people's work, the environment is the source of all wealth. Fuels and materials dug from the ground, animals and plants taken or farmed in the seas and on the land, are the raw feedstock of capitalism. To keep capital growing, the people with access to these resources, must keep acquiring them in ever-larger amounts. The consumption of raw materials by our 'primary industries' is nothing less than the consumption of our planet. With increasing speed, capitalism is taking whatever is usable from the world, using it to fuel growth, and dumping the rest as polluting slag - on the land, in the seas, and in the air. What's more, like the exploitation of workers, the exploitation of the environment must also be driven to ever-greater efficiency.

It is clear to everyone who thinks about these things, that capitalism cannot survive forever - or even for very much longer - without finding more things to exploit. The 'global market' has now, pretty much included every possible worker on the planet in capitalism's web of exploitation. There is plenty of of opportunity for growth there still, but the resource - us - is finite. The environment is starting to show signs of breaking down under the strain. Global warming, peak oil, extinctions of fish stocks, and global food shortages, are all signs that we are using up what is there at an unsustainable rate.

Technology has always been capitalism's friend. The need for more efficient exploitation has always driven technological development. The people who control capital - and the people who depend on its products - are in a precarious position just now. It looks as if the environment might collapse, or run out of key materials, before technological fixes have been found for these problems. We need new places to exploit - the asteroids? other planets? - before this one runs dry. We need ways to keep the environment patched up long enough to bring these new resources online. And, we need more efficient ways to exploit labour (global recessions are good for capitalism, but they do carry the risk of revolution.)

Capitalism is great for the owners of capital, it's not bad for many of the rest of us either (as long as we temper its worst excesses with democracy,) but it isn't a free lunch. In the end, we will have to pay the price for all this wealth.

Some, like the homeless, the people on welfare, and the working poor, already pay that price for us. It is by putting a certain proportion of us in such misery that capitalism ensures the low cost of labour and hence adequate returns on investment for the owners of capital. The suffering of the starving and the homeless in our cities is helping to put the lights on our trees, the iPods in our pockets, and the piles of food on our plates this Christmas.

Is it really so bad if they snatch a can of ravioli from a supermarket shelf in their desperation?

16 October, 2009

Help Me Out, America

Calling all Americans. I need your opinion on something.

I've written a book and it's going to be published in February 2010. It's a near-future thriller set in Europe. The background to the tale is that the world is just recovering from a very serious depression brought on by us hitting peak oil. The depression, which lasted fifteen years, was worse than anything experienced yet - millions starved, resource wars were fought, governments toppled.

It's a very minor part of the story but it is mentioned that of all the countries of the world, worst hit was the USA. It's dependence on oil and its strongly consumer-driven economy meant that the effect of peak oil was worse there than anywhere. The economy collapsed. Tens of millions were unemployed and most of them were starving. Riots and civil unrest threatened to turn into civil war as an ineffectual government dickered around with fiscal stimulus. Things looked bad until a strong, right-wing government, with fundamentalist Christian roots was elected and immediately took a firm grip of the situation. (Imagine a strong George W Bush, or a Sarah Palin with brains.) Unfortunately, they use their emergency powers and a mandate from a population scared to death about what is happening, to push through some constitutional changes - abolishing the separation of church and state and ensuring that only candidates affiliated to the official church can run for office.

Over the next couple of decades, the new government does, in fact, stop the country from plunging into chaos, but at enormous cost. Opposition parties are banned, many universities - hotbeds of anti-government sentiment - are closed down under the new blasphemy and insurrection laws. The ones that remain are 're-focused' on theological teaching, with the closure of many 'blasphemous' science departments, especially the biological sciences, geology, astronomy, philosophy, and physics. Theology replaces science teaching in schools. Many, many people are arrested and executed for anti-government and anti-religious crimes and the FBI is turned into a feared and energetic prosecutor of the new laws and policies.

Ironically, although peace returns to the streets and Americans are being returned to work and the homes they had lost, the country's prosperity, without the leading edge science and technology that once powered it, has nose-dived. With GM crops and livestock classed as 'abominations', the (future version of the) Internet strictly censored, and other countries surging ahead in the recovery, America is actually receiving massive food aid shipments from Europe and Asia - a fact the Christian fundamentalists in power are suppressing through their control of all media.

OK.

Here's what I need help with. As an American, does this scenario seem so far fetched, so completely unbelievable, to you that you would have a low opinion of a book in which it occurs?

05 July, 2008

Peaking into the Future

If you want to know why petrol costs so much these days, you need look no further than the phenomenon of 'Peak Oil'. This refers to the point in time when we are extracting the maximum amount of oil per day from the world's reserves. And that point in time appears to be with us. In 2005 we reached a rate of extraction of 74 million barrels a day and we have stayed there ever since. Oil fields are running dry and new discoveries are not keeping pace. Soon, the rate of extraction will start to fall. In anticipation of how valuable that will make oil, the price has begun to rise. It will go on rising as the oil runs out and demand stays more-or-less level. (Demand is already well above the extraction rate at 88 million barrels a day - the difference being met by liquified natural gas - until we hit 'peak gas' too. It has been increasing exponentially until now but rising prices are likely to counteract that trend.)

Since agriculture depends heavily on oil and gas to fuel equipment and to produce fertilizers, we are almost certainly approaching 'peak wheat' - the point where we just can't afford (or even find) the energy to grow more food. It is no coincidence that there is a world food shortage happening just after we hit 'peak oil'. The price of oil is part of the cause but the frantic (and half-arsed) attempts by the US government and others to reduce oil imports by turning farmland all over the world from food production to the production of biofuels is the rest.

And there is little anybody can do about it. Your vote counts for nothing when every candidate on offer supports stupid, ill-conceived, industry-pandering plans that amount to 'business as usual'. Your personal efforts to reduce your oil consuption will come to nothing if you must commute to work because of the way cities are laid out (everything in the middle and all the affordable housing way, way out on the fringes) and you can't switch to public transport because there isn't any, and using a hybrid car is actually no more fuel efficient on average than using a deisel car. Your personal efforts to reduce energy consumption in your home might be worthwhile, if you don't mind spending a lot of money on it, but this only helps the oil crisis if your local power station is oil-fired.

In the end, it is down to our politicians to force industry to make the changes we desperately need. And they are either too stupid (such changes would require them actually understanding the science and economics involved) too greedy (most politicians are in the pay of big business one way or another and they all want those chairmanships and consultancies when their political career is over) or too selfish (they would rather hang on to power than do anything good or worthwhile that might make them unpopular) to do what must be done.

Perhaps what has really happened is that we have reached 'peak intelligence' - the point at which the society we have made has become too complicated and difficult for our limited little brains to manage. It certainly looks that way.

01 June, 2008

Focus Fusion: Will It Save Us?

I've been reading a bit lately about focus fusion – a radically new approach to producing power from fusion reactions. The research is spearheaded by Eric J. Lerner and his company Lawrenceville Plasma Physics Inc. (LPP) and has been financed mostly by Government organisations like NASA and the Chilean Nuclear Energy Commission .

The basic principle is to use Dense Plasma Focus (DPF) to confine a proton-Boron mix (pB11) at extreme temperatures (a couple of million degrees) so that a fusion reaction can take place. The DPF technology has existed for decades but the theoretical work needed to enable a controlled fusion reaction has not existed until very recently. Now, LPP has received a USD600,000 grant from Swedish firm CMEF (the first part of ten million dollars if all goes well) to develop a proof-of-concept reactor.

Focus fusion has none of the major drawbacks the Tokomak programme has laboured under. It doesn't suffer the plasma stability problems Tokomaks do, it does not generate 'hard' radiation like Tokomaks, and it can feed electrons directly into the grid without the need to generate heat to drive turbines. It could potentially generate electricity at a hundredth of the cost of existing power generation techniques. It is also suitable for small-scale, distributed power production (a 5MWatt reactor could fit inside a garage). That means focus fusion reactors could power railway locomotives, lorries, ships and aircraft. What's more, electric cars would vastly outperform petrol (economically). If focus fusion works, we could easily be looking at a completely petrol and coal free world in just a few decades!

Obviously this would be a disaster for the Middle East and for the big petrol and coal companies (and, hopefully, the governments they prop up). It would probably also be a disaster for the major coal-exporting countries like Australia – which is a bit unfortunate since that's where I live. It would also mean the end of renewable energy technologies (I don't suppose anyone will be sad to see the end of wind farms!) and it would, at last, kill off nuclear power as a viable commercial concern.

All-in-all, it would be a miraculous technical breakthrough that would save us from global warming and make electricity virtually free for the whole world. It is estimated that there is enough boron in the world to keep us in power for a billion years and the only wast emission you get from focus fusion is Helium – an inert gas with no greenhouse effect.

Too good to be true? In a world already beset by food riots and the first petrol riots, a world that is just a few decades from a catastrophic climate change tipping point, where the first resource wars have already been fought, for all our sakes, let's hope not.

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