John Ivison is wrong about climate ethics

Writing recently in the National Post, John Ivison was dismissive of the views of the scientist James Hansen:

So overblown is Mr. Hansen’s rhetoric that it is easily dismissed. This, after all, is the man who, for all his scientific credibility, has said climate change is a moral issue on a par with slavery.

I don’t think the comparison between slavery and unrestrained climate change is unrealistic. Under slavery, the rights and welfare of one group of people (slaves) were ignored so that the wealth and privileges of another group (slave owners) could be protected. When we burn fossil fuels, we are making a similar assertion that our interests count, while those of all the people who will suffer from climate change do not.

What Ivison misunderstands is the instability of the climate system. A human being who has lived for a few decades under a largely stable (though increasingly destabilized) climate regime has no ability to intuitively comprehend how the climate system as a whole responds to forcings. We do, however, have paleoclimatic records that stretch back for hundreds of thousands of years and which reveal that the climate can be a very unstable phenomenon when subjected to such stresses.

Even under a business-as-usual scenario, in which humanity keeps burning a quantity of fossil fuels similar to what we are burning now, it is likely that the climate will warm by more than 4˚C by the end of the century. That would quite likely involve large-scale global impacts, like the progressive disintegration of the Greenland and West Antarctic ice sheets (with accompanying sea level rise) and major changes in precipitation patterns (stressing global agriculture). If we are not to fundamentally and essentially permanently alter the climate that human beings have relied upon since the emergence of our species, we need to aggressively scale back the use of fossil fuels. Far from building new oil pipelines and coal-fired power plants, humanity should be working out the most efficient way to shut down the ones we have.

When we carry on with fossil fuels because they happen to be convenient to us, we are imposing suffering and death on our fellow human beings. By threatening substantial increases in sea level, we are threatening the existence of entire low-lying countries. Hansen isn’t wrong to say that climate change is a moral issue on par with slavery; people like Ivison are wrong to dismiss Hansen’s concerns because they can’t imagine the world changing so much.

Maria van der Hoeven on climate change risks

Maria van der Hoeven, executive director of the International Energy Agency (IEA), has issued a stark warning about the world’s inaction on climate change and the consequences that may have. The Guardian quotes her as saying that the world is “on track for warming of 6°C by the end of the century” and that this level of warming “would create catastrophe, wiping out agriculture in many areas and rendering swathes of the globe uninhabitable, as well as raising sea levels and causing mass migration, according to scientists”.

It’s a shocking thing to read from the director of a relatively conservative organization. It certainly suggests that the policy-makers of the world have their priorities badly misaligned with the welfare of their own citizens and of humanity as a whole.

For years now, the IEA has been calling for global carbon pricing.

Oil sands similes

  • Exploiting the oil sands is like drinking seawater, when you are already dangerously dehydrated.
  • It’s like starting up a smoky old kerosene lantern aboard a space station that is rapidly running out of air.
  • It’s like giving more whiskey to the already-drunk guide who is paddling our canoe over Niagara Falls.

And yet, huge expansion plans are being implemented. The fact that is is profitable has led us to ignore the fact that it is incredibly reckless, as well as an act of violence directed against vulnerable people and future generations.

Climate change and the categorical imperative

In many situations – especially those that can be characterized as a ‘tragedy of the commons’ or ‘free rider’ problem – taking the ethics of the situation seriously often involves ignoring the game theoretical aspects and applying a maxim of moral reasoning like the categorical imperative. If each actor behaves in such a way that their behaviour would be a good model for everyone to follow, then the problem of collective action goes away.

In terms of climate change, this sort of behaviour is important in areas like determining the appropriate policy for fossil fuel extraction. Every individual company and country has more to gain (at least in the short term) from digging up and selling fossil fuels then from restraining themselves. And yet every major fossil fuel producer will need to show restraint if we are to address the problem successfully. Not even Russia, Canada, and Saudi Arabia will benefit if we allow abrupt or runaway climate change to occur. The outcome is best for everyone when individuals ignore the reality that their actions alone will not determine the outcome of collective action, or when they are forced to behave as though they are ignoring that fact.

For those who don’t want the planet to be subjected to the risk of catastrophic climate change (say, warming of over 4˚C, which is where we’re heading now) the practical question is how to get individuals, companies, and states to behave as though they are taking the categorical imperative seriously.

Alternatively, perhaps we should abandon the idea that people will ever voluntarily restrain their pollution for the sake of others. In that case, we need a legal and institutional structure that makes behaving in an antisocial way personally costly (carbon taxes, restrictions on particularly harmful activities, etc).

Climate: the astronaut letter

This is an interesting anomaly:

Some prominent voices at NASA are fed up with the agency’s activist stance toward climate change.

The following letter asking the agency to move away from climate models and to limit its stance to what can be empirically proven, was sent by 49 former NASA scientists and astronauts.

The letter criticizes the Goddard Institute For Space Studies especially, where director Jim Hansen and climatologist Gavin Schmidt have been outspoken advocates for action.

“The unbridled advocacy of CO2 being the major cause of climate change is unbecoming of NASA’s history of making an objective assessment of all available scientific data prior to making decisions or public statements.”

“We believe the claims by NASA and GISS, that man-made carbon dioxide is having a catastrophic impact on global climate change are not substantiated.”

“We request that NASA refrain from including unproven and unsupported remarks in its future releases and websites on this subject.”

It’s true there is a lot of uncertainty surrounding abrupt and runaway climate change scenarios. That’s true almost by definition, since they represent major deviations from the functioning of the climate as we know it and we have no ability to conduct experiments on a planetary scale. It also seems fair to say that the possibility of abrupt and runaway climate change scenarios cannot be entirely excluded, if the world continues to emit vast amounts of greenhouse gas pollution.

While they are clearly objecting to some of the worst-case scenarios raised by James Hansen and others, I don’t think the people who signed this letter are likely to be of the view that climate change isn’t a problem at all. Unfortunately, it’s certain that this letter will circulate for years as a tool used by climate change delayers to argue that we should do nothing about the problem of accumulating CO2.

Other thoughts?

Gardasil

Yesterday, I got the my third and final vaccination against the human papillomavirus (HPV). Some strains of this wart-causing virus also cause cancer. The vaccine I bought – Merck’s Gardasil – protects against HPV types 16, 18, 6, and 11. About 70% of cervical cancers are thought to be caused by types 16 and 18, along with most HPV-induced anal, vulvar, vaginal, and penile cancers. About 90% of cases of genital warts are caused by types 6 and 11.

The vaccine isn’t cheap, but I think it would make a huge amount of sense to vaccinate all children with it, or with an improved version that covers even more HPV types. Giving it to all children makes sense because they are relatively unlikely to have already been exposed to HPV, unlike me. Still, even though there is a chance I have already been exposed to one or more types, I think getting the vaccine makes a lot of personal sense. A study of 4,065 males ages 16 to 26 found that over 30 months three men who were vaccinated developed genital warts, compared to 28 cases in a control group given a placebo, and that none of the vaccinated men were found to have pre-cancerous growths linked to HPV, compared with three cases in the placebo group.

The four doctors who were involved in this procedure were all aware that Gardasil can be used to prevent HPV in men as well as a means of protecting future sexual partners (one doctor prescribed the vaccine and three who gave injections over the course of six months). The vaccine is covered by some health plans.

Previously: Getting the HPV vaccine

The End of Nature

In The End of Nature, Middlebury College professor and 350.org founder Bill McKibben makes the case that humanity has put an end to nature by altering the climate, and then goes on to consider the implications. McKibben’s book – first published in 1989 – briefly explains why human activities are increasing the quantity of greenhouse gasses in the atmosphere, and why this will produce change on a planetary scale. His tone is mostly one of lamentation. He expresses sadness about that which is already doomed to destruction, before progressing extensively into the question of what can still be saved, and what means might achieve it. Reading The End of Nature in 2012 is dispiriting. It proves how everything important about climate change was well understood decades ago, including why our political and economic systems have done nothing serious to slow it down. Nonetheless, McKibben’s appeal is a poignant and effective one. By putting humanity’s current activities in context, McKibben conveys the reality that what happens to the Earth now will mostly be a matter of human choices, and that the philosophies we adopt in the decades ahead will affect the prospects of all the life forms that depend upon this planet.

The basic idea of the book is that humanity has no so thoroughly altered the planet that nothing can be considered ‘nature’ in the sense of ‘unpopulated wilderness’ anymore. Climate change is the most important and dramatic change humanity has produced, but our chemical signature is also written in the form of novel isotopes from nuclear tests, changes to the ozone layer, and in the legacy of pollution and pesticides. According to McKibben’s definition, nobody my age has ever seen nature – only nature as modified through human industrial activity.

Along with climate change, McKibben devotes a fair bit of space to talking about genetic engineering. He sees it as a possible way of keeping humanity’s billions alive in a world that is increasingly damaged by our choices. But it is also another step away from ‘nature’. He envisions a world of trees and fish and animals modified to tolerate a changed climate, and modified further to better serve human needs. Reading these passages in 2012, it seems like he over-estimated the importance of genetic engineering, or at least under-estimated how long it would take to arrive. For instance, he imagines custom organisms that draw in nutrients through tubes and produce the parts of chickens many humans enjoy eating. Margaret Atwood’s ‘ChickieNobs’ from the dystopian 2003 novel Oryx and Crake are described in basically identical terms in McKibben’s book, but nothing remotely like them seems to exist in the real world. So far, genetic engineering has been more about experimentation than implementation, and nothing too world-changing seems to have arisen from it. Perhaps that perspective reflects ignorance on my part, especially given the evolving character of the global ‘agribusiness’ and biotechnology industries.

Because I borrowed a copy of the book from a library, rather than buying one, I didn’t take the detailed marginal notes that I usually do when reading a book. I did, however, pick out a few passages that I think are especially evocative and worthy of discussion:

On the habits of humanity

“The problem, in other words, is not simple that burning oil releases carbon dioxide, which happens, by virtue of its molecular structure, to trap the sun’s heat. The problem is that nature, the independent force that has surrounded us since our earliest days, cannot coexist with our numbers and our habits. We may well be able to create a world that can support our numbers and our habits, but it will be an artificial world, a space station.

Or, just possibly, we could change our habits.” (p.144 2006 Random House trade paperback edition)

Timing

“I have tried to explain, though, why [dealing with climate change] cannot be put off any longer. We just happen to be living at the moment when the carbon dioxide has increased to an intolerable level. We just happen to be alive at the moment when if nothing is done before we die the world’s tropical rain forests will become a brown girdle around the planet that will last for millennia. It’s simply our poor luck; it might have been nicer to have been born in 1890 and died in 1960, confident that everything was looking up. We just happen to be living in the decade when genetic engineering is acquiring a momentum that will soon be unstoppable. The comforting idea that we could decide to use such technology to, in the words of Lewis Thomas, cure “most of the unsolved diseases on society’s agenda” and then not use it to straighten trees or grow giant trout seems implausible to me: we’re already doing those things.” (p.165)

On caring for future generations

“We flatter ourselves that we think of the future. Politicians are always talking about our children, our grandchildren, and, as individuals, we do think about them, but in the same way we think about ourselves. We lay aside money for them, or land. But we do not really think of grandchildren in general. “Future generations do not vote; they have no political or financial power; they cannot challenge our decisions,” said a perceptive introduction to the United Nations report on Our Common Future. Future generations depend on us, but not vice versa. “We act as we do because we can get away with it.”” (p.170)

Beyond what one person can deal with

“The inertia of affluence, the push of poverty, the soaring population – these and the other reasons listed earlier make me pessimistic about the changes that we will dramatically alter our ways of thinking and living, that we will turn humble in the face of our troubles.

A purely personal effort is, of course, just a gesture – a good gesture, but a gesture. The greenhouse effect is the first environmental problem we can’t escape by moving to the woods. There are no personal solutions. There is no time to just decide we’ll raise enlightened children and they’ll slowly change the world. (When the problem was that someone might drop the Bomb, it perhaps made sense to bear and raise sane, well-adjusted children in the hope that they’d help prevent the Bomb from being dropped. But the problem now is precisely too many children, well adjusted or otherwise.) We have to be the ones to do it, and simply driving less won’t matter, except as a statement, a way to get other people – many other people – to drive less. Most people have to be persuaded, and persuaded quickly, to change.” (p.174)

So McKibben lays out the challenge that has been occupying some of the most capable and driven people in the world for decades (occupying them, but not yet producing even the beginnings of success) and which seems likely to be the defining activity for humanity as a whole for the decades and centuries ahead.

Since 2007, McKibben has been an important organizer of environmental campaigns and the founder of 350.org, an organization that aims to keep the atmospheric concentration of carbon dioxide below 350 parts per million. Beyond that level, the sensitivity of the Earth to greenhouse gasses is such that we would likely see the disappearance of nations like the Maldives along with large parts of nations like Bangladesh and the Netherlands, accompanied by profound changes to physical and biological systems around the world. Keeping the level of greenhouse gas pollution in the atmosphere below 350ppm is incredibly ambitious and far beyond what any large country on the planet is meaningfully aiming for now. If implemented globally, Canada’s policies would probably put us more in the territory of 1000ppm by 2100 – territory that involves changes so profound that they might threaten the future of the human species, as well as the future of countless other less resilient species in the ecosystems of the world.

The End of Nature is a reminder of the scale of the fight we have on our hands, as well as of the stakes involved. If we are to have any chance of succeeding, we must be committed, passionate, strategic, self-sacrificing and willing to do what has never been done before.

Distrust that Particular Flavor

This book contains about 20 pieces of short writing by William Gibson. They vary in style and content, from his essay on the culture of Singapore (“Disneyland with the Death Penalty”) to long discussions of his history with buying mechanical watches to his thoughts on the future of technology and the societal importance of science fiction.

Not every piece was terribly resonant with me, but I found the book very worthwhile overall. Gibson makes a reasonable case for the importance of technological development in the evolving character of societies, though he may go a bit too far in saying that “all cultural change is essentially technologically driven” (p.123 hardcover).

Googling the Cyborg” was probably the most interesting essay – discussing the way in which human biology and technology have already started to compliment one another to a remarkable degree.

Trying the same thing and expecting a different result

I’m sure everyone has heard this quote and its variations: “The definition of insanity is doing the same thing and expecting a different result”.

While it may have a kind of folksy charm, I think the position being argued here is plainly false. While there will never be a simple an unambiguous definition for a concept as subjective as ‘insanity’, I think the definition above can be effectively refuted.

First, we need to be careful about what we mean by ‘the same thing’. A man trying to open a pickle jar is likely to do ‘the same thing’ several times – trying to twist off the lid in what he believes to be the right direction. Frequently, the repeated application of effort will do the job. It can be argued that this doesn’t contradict the original claim. ‘Twisting the lid of a pickle jar that I have already twisted five times’ is not ‘the same thing’ as ‘twisting the lid of a pickle jar that I have already twisted four times’. Fair enough, but this interpretation supports the view that repeating the same behaviour can be an intelligent and successful strategy, rather than the mark of mental imbalance.

Second, there is a reasonably admirable practicality involved when a person tries something several times and notes whether the result changes. I might try throwing five darts at a dart board and get a different result with each one. Less trivially, I might apply to ten graduate schools and get a range of answers. In these circumstances, my expectations are more complex than ‘same result’ or ‘different result’. I may well get into nuanced claims like: “I thought it was pretty likely I would hit the dart board, but I had no idea where” or “I am likely to get into some schools, but probably not all of the most prestigious ones’.

The world often involves complicated interactions between phenomena that incorportate chaotic elements. In a world like that, trying the same thing over and over can be an essential way of sorting out what the governing dynamics of a relationship really are. The fact that trial and observation are at the heart of the scientific method are probably why this flippant witticism annoys me so much.

As is often the case, XKCD has already made this point in a more effective and eloquent way than I can.

Gambling with high stakes

As with other high-risk activities, I think gambling on climate change is irresponsible and reckless, even if the people making that bet turn out to be right.

If a person runs across a minefield in order to experience the thrill of danger, few people are likely to congratulate them for their bold choice in the face of uncertainty. Even if you get away with it, it is foolish to run careless risks, especially when the consequences of getting it wrong are severe. This is why Russian Roulette is commonly regarded as an absurdly irresponsible pastime.

Say there is some powerful negative feedback that climate scientists haven’t yet identified. And say it manages to reduce the severity of climate change substantially. Imagine it is 2100 and we are looking back at 2012. I think the people considering the problem from that vantage would be quite willing to recognize how scary climate change looked in 2012. I also think they would be willing to chastise us for our inactivity on the problem, even in a scenario where it worked out that our most extreme fears for what climate change might mean weren’t recognized. Rather than being concerned about climate change ‘alarmists’ who called for action, I suspect impartial citizens in 2100 would be critical of the people who wanted us to plow heedlessly on with fossil fuel development, despite the serious outstanding questions on what effect that would have on the future of human civilization.

From any rational perspective, it makes sense for the world as a whole to take serious action to reduce the seriousness of climate change and the probability of extremely bad outcomes. The problem is that this course of action is not in the short-term interests of many individuals, including powerful people whose wealth and influence is rooted in the status quo.

The real question, when it comes to climate change, is how to make individuals, companies, and countries behave more like they would if they were taking the rights and welfare of everybody seriously. Something like the Categorical Imperative (or even the Harm Principle) provides the moral backing for this view. The question is how to discourage selfish and destructive behaviour while encouraging the cooperation and sacrifice that are required to protect the planet and discharge our duties with respect to future generations.