Category Archives: Science And Society

The Social Cost Of Carbon

…and the much higher cost of carbon denial:

…the relationship between GDP and carbon is not merely linear, but quadratic, with total economic output rising as roughly the square of carbon use. For example, since 1975, carbon use has doubled, causing a quadrupling of global GDP. Furthermore, if we take the ratio of current global GDP ($60 trillion) to carbon use (9 billion tons) and divide it out, we find that, at present, each ton of carbon used produces about $6,700 of global GDP.

So each ton of carbon denied to the world economy destroys about $6,700 worth of wealth. That is the difference between life and death for a Third World family. Seven tons denied corresponds to a loss of $47,000, or a good American job. Since 2007, the combination of high oil prices and a depressed economy has reduced the United States’ use of carbon in the form of oil by about 130 million tons per year. At a rate of $6,700 per ton, this corresponds to a GDP loss of $870 billion, equivalent to losing 8.7 million jobs, at $100,000 per year each. Were we to implement the program of the Kyoto treaty, and constrict global carbon use to 1990 levels, we would cut global GDP by $30 trillion per year, destroying an amount of wealth equal to the livelihood of half of the world’s population.

These people understand neither science, or economics.

The Problem With The Mann Judge’s Ruling

I noticed this at the time as well:

Interestingly, it appears that Judge Combs Greene has mixed-up the defendants in the court’s ruling, attributing actions taken by the Consumer Enterprise Institution to Mark Steyn and National Review.

I have no comment. I also have no comment on these comments.

[Wednesday-morning update]

In fairness to the judge, the people most likely to comment at a site like that are going to be people unhappy with her rulings — it’s less likely that someone should show up to laud her, regardless of the quality of her work.

Also, Phil Plait has more, with several links. He’s very happy, of course.

It’s very frustrating to not be able to make any substantive comments on this.

[Update a couple minutes later]

This at the always misnamed ThinkProgress is hilarious: “Mann has been vindicated yet again!”

Yes. Right.

[Bumped]

Climate Skeptics

…and the scientific method:

…how can criticisms of sceptics as politically motivated be squared with science’s commitment to findings always being provisional and open to challenge? At what point can we judge that a scientific question moves from a position of “doubt” to being “settled”?

Both climate change sceptics and advocates of climate policy see this question as important; sharing a faith that scientific evidence is the basis for public policy. However, such a faith omits the possibility that science is not suited to such a role, and that “solving” climate change does not flow linearly from agreement on the science. The attentions of sceptics may or may not be improving the practice and knowledge of climate science. However, if sceptics’ never-ending audit is really damaging policy, that may be more a reflection of an overly scientised policy process than a basis for denying them a voice in debate.

Yup.

CAGW Skepticism

“My personal path“:

…being English I knew all about the vagaries of the weather, but the warnings about CAGW always seemed to be made in the most certain terms. Was it really possible to predict the climate so assuredly? The global climate must be an extremely complex system, and very chaotic. I had recently heard about financial institutions that were spending vast sums of money and picking the very best maths and programming graduates, but still were unable to predict the movements of financial markets with any confidence. Predicting changes to the climate must be at least as difficult, surely? I bet myself climate scientists weren’t being recruited with the sort of signing-on bonuses dangled by Wall Street. I also thought back to the ice age scare, which was not presented as an absolute certainty. Why the unequivocal certainty now that we would only see warming, and to dangerous levels? It all started to sound implausible.

The whole thing also seemed uncertain on the simple grounds of common sense. Could mankind really force such a fundamental change in our environment, and so quickly? I understood that ice ages could come and go with extreme rapidity, and that following the scare of my childhood, no one seriously claimed to be able to predict them. So in terms of previous natural variability, CAGW was demonstrably minor in scale. It seemed obvious that if natural variability suddenly switched to a period of cooling, there would be no CAGW no matter what the effect of mankind on the atmosphere. Even more fundamentally, how could anyone really be certain that the warming then taking place wasn’t just natural variability anyway? The reports I read assured me it wasn’t, but rarely in enough detail to allow me to decide whether I agreed with the data or not.

The other thing that really got me thinking was seeing the sort of people that would appear on television, proselyting about the coming tragedy that it would imminently become too late to prevent. Whether from charities, pressure groups or the UN, I knew I had heard their strident and political use of language, and their determination to be part of the Great Crusade to Save the World before. These were the CND campaigners, class war agitators and useful fools for communism in a new guise. I suddenly realised that after the end of the Cold War, rather than slinking off in embarrassed fashion to do something useful, they had latched onto a new cause. The suggested remedies I heard them espouse were always socialist in approach, requiring the installation of supra-national bodies, always taking a top-down approach and furiously spending other peoples’ money. They were clearly eager participants in an endless bureaucratic jamboree.

And remain so.