I didn't bother to watch The Great Global Warming Swindle, partly because I was rushing around too much, partly because I'm more and more wary of documentary-makers' habit of over-egging their arguments. (So, no, I won't be tuning in to the latest Adam Curtis ideas-fest either. Norm sends up the concept very nicely.)
Is Doomsday really just around the corner? Gregg Easterbrook, one of America's most open-minded environmental writers, has written an Atlantic essay which attempts to weigh the effects of climate change. Plenty of alarming data there, of course - especially about the impact on poorer countries - but some shades of grey too:
Temperatures are rising on average, but when are they rising? Daytime? Night time? Winter? Summer? One fear about artificially triggered climate change has been that global warming would lead to scorching summer-afternoon highs, which would kill crops and brown out the electric power grid. Instead, so far a good share of the warming—especially in North America—has come in the form of nighttime and winter lows that are less low. Higher lows reduce the harshness of winter in northern climes and moderate the demand for energy. And fewer freezes allow extended growing seasons, boosting farm production. In North America, spring comes ever earlier—in recent years, trees have flowered in Washington, D.C., almost a week earlier on average than a generation ago. People may find this creepy, but earlier springs and milder winters can have economic value to agriculture—and lest we forget, all modern societies, including the United States, are grounded in agriculture.
Pollyanna-ish? You have to be a subscriber to read the entire piece, but there's a very useful open-access interview with Easterbrook in the on-line version of the magazine. Here's part of what he has to say about the task of cleaning up the environment:
If your goal is reduce greenhouse gases, it’s far more logical to spend your money and invest your capital in China and India than it is in the United States, because the bang for your buck in terms of greenhouse gas reduction there is many orders of magnitude higher there than it is here. A lot of the people who talk about greenhouse gas reduction focusing on the United States just seem to want some sort of punitive measure that harms American industry so they can feel good and go back to their Chablis and brie...
If American capital and expertise did nothing in the next 20 years except raise the efficiency of Chinese coal-fired power plants—if that’s the only thing we did—it would be probably the single greatest contribution to slowing the rate of greenhouse gas accumulation that anybody could make in the world. It would certainly exceed any possible reform here in the United States.
And here's his assessment of An Inconvenient Truth and the media's role so far:
You don’t need this silly Hollywood exaggeration. So a lot of elites have made doomsday claims about global warming destroying society and things like that, though the doomsday scenarios are statistically unlikely and statistically unlikely things don’t happen very much.
But the likely and scientifically credible scenarios are plenty worrisome enough. And to the extent that the media has been pushing doomsday on this, one of my worries is that the press corps has totally shot its credibility in a classic crying wolf exercise all through the ‘80s and ‘90s. The big deal press corps—The New York Times, everybody—has repeatedly demonstrated total incomprehension of the relative risks of environmental issues. We’ve heard an awful lot about arsenic in drinking water and electromagnetic emissions from power lines and things that even in the worst case analysis are really marginal threats and affect only very small numbers of people and only very slightly raise risks.