Here’s my Fin article from yesterday. It’s a bit economic rationalist in tone, but this is a situation where rationality (economic rationalism in the 1970s sense of the term) is needed.
Read More »

For the last few years, Exxon Mobil has been the biggest single source of support for global warming denialism, and has also exercised a lot of influence on the Bush Administration in its do-nothing stance. For a long while, Exxon was able to act through front groups like the Global Climate Coalition, but the corporation has been increasingly isolated and its activities have been exposed to public scrutiny, most notably with the open letter from the Royal Society last year.

Now Exxon has changed its position, recognising the inevitability of some sort of controls on CO2 emissions, and lobbying for a broad approach that will be relatively favourable to businesses like Exxon, rather than one tightly focused on the energy industry. At this point, an association with shills for denialism like the Competitive Enterprise Institute is counterproductive as well as being embarrassing, so they’ve been cut adrift (along with half a dozen others not yet named).

In other news, Stern has responded to critics of his review in a recently published postscript. There’s also a Technical Annex with a sensitivity analysis, something that both critics and those (like myself) with a generally favorable view should welcome.

As I said in the previous post, I plan to focus on the economics of responses to climate change from now on and the obvious place to start is the Stern report.

There’s a lot in the Stern report, and I’m going to assess it a part at a time, starting with the issue I’ve been most interested in, the cost of stabilizing atmospheric CO2 levels. I’ll focus on the case considered by Stern, and in my submission of stabilising levels at 550 parts per million, which implies a reduction in emissions of around 60 per cent, relative to business as usual, by 2050. This should be enough to avoid severe damage.
Read More »

The scientific debate over the reality of anthropogenic global warming has been over for some time, but as long as the opponents of science continued to dominate the political process, it was necessary to combat their claims.

But with the Howard government now supporting emissions trading, at least in principle, and with the overwhelming majority of the public convinced of the need for action, that necessity has now passed, at least in Australia. The main task now is to encourage the government to adopt the most efficient and effective strategies for mitigation and adaptation, in co-operation with other countries. That obviously includes signing Kyoto (with the latest change in position and with Bush a lame duck there’s no reason not to), but it could also include getting the (so-far merely decorative) AP6 process to do some work.

Of course, at least some of the denialists will keep on denying. But they’re in a hole and I’m happy to let them keep on digging. At this point, they’ll do less harm banging on about the hockey stick than they would if they accepted the reality of global warming and used what’s left of their credibility in an attempt to derail any positive response.

So from now on, I’m not going to bother refuting the absurdities of Bolt, the Lavoiser Group and other denialists. Rather than make all those who’ve enjoyed the stoush here go cold turkey, I may put up more open threads from time to time, but my future posts will be about the economics and politics of our response.