Earth Day and the Environment

Tuesday, May 1, 2007
Over the last week I’ve done a couple radio interviews related to my op-ed in the Detroit News, “U.S. must move beyond Earth Day slogans.”

Thanks to The Bill Meyer Show out of Medford, Oregon, who had me on in the morning last Thursday.

And thanks also to The Paul Edwards Program for having me on yesterday. I spoke with Paul at some length about the complications of owning Compact Fluorescent Lightbulbs (CFLs). In the course of the interview (which you can listen to here), I referenced a couple webpages that I’ll pass along.

The first is 18Seconds.org, hosted by Yahoo!, at which you can track the sales of CFLs in your state or locality. Michigan has bought over 1.2 million CFLs since the beginning of 2007.

There is some information on the mercury in CFLs fairly deep into the “Why Switch?” section. Here’s a taste of the copy: "All fluorescent lights contain trace amounts of mercury. But don’t worry — there is far less mercury in CFLs than in thermometers or old thermostats. Plus, using these bulbs helps
prevent mercury from being released into the air from coal-powered power plants. When they burn out years down the road, recycle them."

But here’s a second piece I talked about that might take issue with those claims: “The CFL mercury nightmare,” by Steven Milloy of JunkScience.com. Milloy describes the experience of Brandy Bridges of Ellsworth, Maine, who faced a $2,000 clean-up bill when she accidentally broke a CFL, exposing mercury in her daughter’s bedroom.

Governments and corporations are engaging in huge campaigns to push the use of CFLs. The Home Depot gave away 1 million CFLs in an Earth Day promotion, and Wal-Mart is advocating them heavily. Check out this promotional video, “Energy Makeover,” from In Front with Wal-Mart, the company’s newest webcast program.

If the mercury in these CFLs, almost universally acknowledged to be a harmful environmental hazard, turns out to have serious health consequences, companies like Wal-Mart and The Home Depot could be opening themselves up to litigation. They may need to attach some sort of warning label (hopefully not a useless one that would win this contest).
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Global Warming Consensus Alert!

Tuesday, May 1, 2007
Via Stephen Hayward at Planet Gore comes word of another scientist off the “consensus” reservation. According to David Evans (who, according to his bio, is a genuine rocket scientist - sweeeet...), “... in 1999 the evidence that carbon emissions caused global warming seemed pretty conclusive, but since then new evidence has weakened the case that carbon emissions are the main cause. I am now skeptical. As Lord Keynes famously said, ‘When the facts change, I change my mind. What do you do, sir?’”

Evans does a great job of laying out why the science on the issue of climate change is not settled, and also notes the potential dangers of the current “consensus”:
The evidence is not currently conclusive either for or against any particular cause of global warming. I think that it is possible that carbon emissions are the dominant cause of global warming, but in light of the weakening evidence I judge that probability to be about 20% rather than almost 90% as estimated by the IPCC.

I worry that politics could seriously distort the science. Suppose that carbon taxes are widely enacted, but that the rate of global warming increase starts to decline by 2015. The political system might be under pressure to repay the taxes, so it might in turn put a lot of pressure on scientists to provide justifications for the taxes. Or the political system might reject the taxes and blame science for misinforming it, which could be a terrible outcome for science because the political system is powerful and not constrained by truth.

Some people take strong rhetorical positions on global warming. But the cause of global warming is not just another political issue that is subject to endless debate and distortions. The cause of global warming is an issue that falls into the realm of science, because it is falsifiable. No amount of human posturing will affect what the cause is. The cause just physically is there, and after sufficient research and time we will know what it is.

Perhaps the best thing about this post is that it comes as part of a civil, rational debate about the merits of climate science, something that is sorely lacking in the current highly politicized climate. This sort of exchange is an encouraging sign that rationality may win out over hysteria in the end.
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