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Showing posts with label environment. Show all posts
Showing posts with label environment. Show all posts

Friday, 25 June 2010

It’s the environment, stupid

No matter how much The Australian may try to spin the palace coup against Kevin Rudd as arising from his mishandling of a proposed tax on mines, the big swing against Labor in the polls has consistently been towards the Greens.

I’m not sure in what universe The Australian lives, but in this one, people do not desert a ruling party for the Greens out of empathy with embattled miners, at risk of losing some of their massive profits to the public purse.

In 1992, Bill Clinton’s campaign strategist James Carville hung a sign in his campaign headquarters:

The economy, stupid

Given that Labor campaigned in the 2007 election on taking climate change seriously and has achieved almost nothing, with an emissions trading scheme proposal weaker than the Howard administration’s, that has gone on the back burner, maybe they need a reminder:

The environment, stupid

Monday, 2 June 2008

If biofuels are the answer, what is the question?

One of the biggest problems with both climate change and the growing threat of peak oil is that it's all too easy to fall into the trap of subsidizing special interests, rather than actually tackling the real issues.

Either we accept that these problems are real (singly or collectively) and we focus on solutions, or we don't. In either case spending good money on non-solutions is idiotic. If there is a real problem, we need to solve it. If there isn't, why are we wasting valuable resources on unnecessary research, industries that don't stand up to competition and that, in any case, wouldn't solve the problem if it were real?

My own position is that there is far too little cause for doubt on climate change to mess around: we should stop navel contemplation and get on with solving the problem.

I am a little less certain on peak oil. Hubbert's original theory worked well for a single market, the US (he accurately predicted the US peak as 1970-5975). When US oil discovery peaked, it made sense for oil companies to switch their focus to other parts of the world, rather than pursue diminishing returns (oil that was harder to find, harder to extract, or both). The same equation does not apply worldwide: oil companies can't start exploring another planet for oil. So more expensive exploration and extraction in combination are very likely to push the peak well out beyond Hubbert's calculation.

However: the key issue is that we are starting to deplete the cheaper resources, coincidentally with massive growth in new economies (especially China but also India), so prices have only one way to go, and that is up. Add that to climate change, and there is a powerful argument to look for alternatives to fossil fuels.

Biofuels are at best a small part of the solution because there isn't unlimited agricultural land available to turn over to fuel production. At worst, they exacerbate the problem, as in countries like Malaysia and Indonesia where massive amounts of greenhouse gases are emitted through deforestation for oil palm plantations.

Wikipedia has an informative article on the world leader in ethanol, Brazil.

To put matters into perspective, world ethanol production in 2004 was 10,770-million gallons. In the same year, the US alone consumed nearly 14 times that amount of petrol (gasoline for American readers: over 3 billion barrels, about 140-billion US gallons).

Brazil is in a favourable position for growing a lot of sugarcane for fuel; it is unlikely that their production could be scaled up through enough other countries to make a meaningful dent in the problem, even if so doing would not displace food crops, or result in other environmental disasters.

The US could significantly increase available agricultural area for biofuel crops with a total cessation of feeding food, grown on land that could produce human food or energy crops, to farm animals. Not only would this be a more efficient form production, but the cows would have less fat, reducing the human obesity problem. However, it is only in comparatively wealthy countries that this kind of land exists for conversion. In poorer countries, cows eat grass. And not many countries are in the position of Brazil, with a significant fraction of farmland available for sugar cane.

In any case, oil, coal and biofuels are an incredibly inefficient way of storing solar energy. A plant stores between 3 and 6% of the incident solar energy, compared with solar cells, which are supposedly inefficient because they 'only' covert 15-20% to electricity (do a search on "solar cell efficiency": there are some far better efficiencies in research labs). Add in all the other losses from converting plants to a usable form of fuel and the losses from burning them to create the form of energy we actually want (motion, electricity, etc.) and they turn out to be incredibly inefficient. In the case of fossil fuels, the stupendous inefficiency of their production is masked by the fact that we waited hundreds of millions of years before bothering to use them.

If we can find an efficient way of storing electricity, we will solve the entire energy problem with the exception of the real hard case, air travel.

The long-term solution is energy sources that do not require burning carbon or hydrocarbons. If we are serious about dealing with climate change and the threat of peak oil, we should be putting massive resources into solving this problem. In any case, it's stupid to put waste big money on non-solutions.

Thursday, 29 May 2008

Peak Oil, Poverty, Moore's Law and Manure

Peak Oil


As oil and with it products we use to fuel our cars and trucks gets more expensive, there is growing anguish about the effects on the cost of living. China alone is adding millions of cars a year to the total, and peak oil theory says we should be hitting limits soon on production growth.

In reality, as prices go up, there will be options of exploiting kinds of oil previously too expensive: under the deep sea, in the arctic (conveniently being freed of ice; what's doing that, I wonder, if there's no climate change?), tar sands, shale oil… so production may not drop off as fast as predicted by peak oil theory. But should we want to squeeze every last drop of oil (and coal and gas) out of the ground?

Not only do we have climate change to worry about, but the economics of fossil fuel has a lot to do with the gap between rich and poor nations.

The Poverty Gap


In the twentieth century, the cost of communication increasingly split rich from poor. By communication, I mean movement of people, goods and information. Part of this was energy; another part telecommunications. The common thing was the distinction between countries with a comprehensive network of roads, rail, electricity and telephone connections, and those without.

Addressing this gap became increasingly hard, as the cost of new infrastructure has to compete with infrastructure created in an era of lower costs (e.g., coal was cheaper because demand was lower). It is this gap which for example makes fruit in a third world country absurdly cheap in tradable currency terms, while making a local phone call is ridiculously expensive. There's a kind of arbitrage, but one where the places where the price differences occur are too hard to connect, to correct the pricing anomaly (as would happen for example if the US$ to euro exchange rate was out of synch with the US$ to pound sterling exchange rate).

Somehow, despite all this, we have arguments from climate change inactivists that addressing poverty is an alternative to addressing climate change. Yet if you accept that poverty is largely structured into communication infrastructure (or lack thereof in poorer countries), new technologies that reduce the need for infrastructure can go a long way to closing the poverty gap.

An example is the cell phone. In many poor countries, cell phone roll-out has been many times faster than predicted, because of communication starvation. People in Nigeria didn't have phones not because they were poor, but because there was no infrastructure. Cell infrastructure is relatively cheap to put in: as long as you have electrical power, you can virtually parachute base stations in. By contrast, a nation-wide wired phone network needs wiring to the home, with extensive local wiring, even if trunk lines are wireless.

This example generalizes to other cases like electricity. If you can generate power locally without a grid, you can make energy accessible a lot faster in countries without infrastructure. Eliminate the cost of consumables, and you also eliminate another huge problem: rapid price increases as supply fails to keep up with demand. If you think this is bad for wealthier countries, what will doubling the fuel price to to someone who can barely afford a car?

Moore's Law


The nice thing about renewables is that technology changes reduce prices. It doesn't matter if coal supply runs low, oil runs out or gas slows to a trickle. The wind will still blow, the sun will still shine. Just as Moore's Law has pulled computer prices down dramatically over decades, photovoltaics and wind are getting cheaper. Eliminate the consumables and you have a real revolution in energy economics, far bigger than Henry Ford's revolution in personal transport.

This is an exciting time once we forget doom and gloom and think of what could actually be done.

Instead of living in terror at consequences of change, how about accepting that we are looking at a change as big as the move from horse and buggy to cars?

Think of it this way: the cost of renewable energy sources only depends on the technology, not consumables. Once we get this right, we can make energy cheaper with every new development. As long as we are stuck with fossil fuels, prices can only go up as demand overtakes supply.

Why are we so scared of this great new concept? Once we solve the energy storage problem (there are already good ideas like compressed air) poorer countries will benefit too. What's the downside? Unless you own a coal mine ... the horse industry lost big time when the Model-T appeared, but think of the advantages to society as a whole: personal mobility on a level never experienced before.

Now we have the next level: energy with radically lower constraints on supply and infrastructure. If you can do local microgeneration with efficient storage, you no longer need a grid. In rural Africa, for example, you could almost parachute in (where have we heard that before?) a solar or wind microgenerator.

Manure


Back in the nineteenth century, it's alleged that someone predicted that London would be metres deep in horse manure in a few decades. It's a nice story, even if it's improbable that it's true (I have yet to find a direct source for it, and there are several variants – the hallmarks of a myth or urban legend). It is certainly true that getting rid of horse manure in the streets of major cities was a growing headache – just as cutting carbon emissions is today.

So why, today, are we staring down the problem of curbing carbon emissions when there are far superior alternatives – alternatives that only need a little development to be viable?

The only alternative is to consume fossil fuels like there's no tomorrow, then it's back to the stone age. Why are we even debating this?

Tuesday, 30 October 2007

Novel: No Tomorrow

I've just completed a novel titled No Tomorrow featuring an out of work computer scientist who is trying to make the ultimate truth about climate change documentary.

The novel was inspired by the poor job Martin Durkin did of The Great Global Warming Swindle which was meant to debunk conventional climate change science, but was easily picked apart by scientists. What if the case was weak as the “sceptics” claim but no one was presenting their side clearly? Doing that properly would be a good documentary.

The trouble is, this is a fast-moving area. The politics is moving rapidly. Al Gore and the IPPC were awarded a Nobel. Climate change has moved to centre-stage in the Australian federal election called for 24 November 2007.

So rather than make the documentary, I wrote a novel about someone trying to make one. I had to do a fair fraction of the research that would have had to go into the documentary, but saved on all the travel time (and cost).

I had to make up people and their lives, but that was fun. I have no way of knowing if the real scientists on both sides of the debate would have behaved as I had them in the book. But that's fiction for you. At least I did make a good attempt at understanding the science which is more than moth fiction authors (aka journalists) bother with.

The novel is set in places I've lived in or visited: Brisbane, Boston, New York, Sydney, Sunshine Coast (near Brisbane), Berkeley, San Francisco and Stanford. It includes a nice slice of human interest so the science will not be too boring for the uninitiated. I also include a few slugs of real hard-core computer science since usually this stuff is watered down or just plain wrong.

Check out the novel's google groups site for more.