Morning Edition had
an interview on Friday with Marcia McNutt, described as "one of the country's most influential scientists. A former opponent of the Keystone XL pipeline, she's now come around to support it. Her arguments were interesting and had a certain amount of sense in them, but she wrapped up with a couple of statements that strained reason, and one of them would get an "F" on a logic exam.
The argument
against the pipeline is that it's being built to bring the Athabascan tar sands to market, and that we need those tar sands to stay in the ground if we're going to have any chance at all of preventing run-away climate change. McNutt observed that the tar sands are moving to market anyway, just by truck and by rail, and those means of transportation use a lot more energy than would a pipeline.
People have also raised concerns about the safety of the pipeline, and several recent spills and/or explosions have increased those fears. But truck and rail transport are also prone to accidents, as has also been recently demonstrated. McNutt argued that environmentalists would do better to cooperate, relinquishing opposition to the pipeline in return for (among other things) advanced safety features to make the pipeline really safe.
Those seem to me like serious arguments that are worth weighing in a discussion of Keystone, but other parts of her argument undercut her credibility. She observed that transport by pipeline is much cheaper than alternatives, and suggested that in this "austere" time there might be a way to use those savings as a source of funding for alternative energy sources.
Well, sure, in principle. From an aggregate perspective if the economy is saving money through cheaper transport of gas, it should have more means available for other things, like investments in green energy. But the oil companies were planning to pocket those savings, or maybe split them with consumers, so—again from an aggregate perspective—redirecting some of those savings toward green energy would be tantamount to a tax on tar sands extraction.
Look at the political situation today.