Quantifying the social cost of greenhouse gas emissions. Latest results, from a study at Duke headed by Drew Shindell. The numbers are not “real,” but are based on more than guesswork. The relative comparisons of different sources of energy appear reasonable to me. The point is that producers and consumers do not pay for any of this damage; human societies everywhere pay, in a multitude of unseen ways. “There is room for ongoing discussion about what the value of atmospheric emissions should be. But one thing there should be no debate over is that the current assigned price of zero is not the right value.”
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New measurements of Arctic sea ice. Thickness is very difficult to measure properly. This study finds that Arctic sea ice has been growing thinner at a faster rate than previously thought, making it easier for extent to be reduced in the summer thawing period. This should serve as a reminder that efforts to stabilize climate by reducing emissions need to be quickened instead of the usual tendency for delay.
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Effects of drought in the Amazon. New measurements have been made of the amount of CO2 released when drought takes effect in the Amazon basin. Here again the numbers are higher than previously thought, and they are huge, giving us yet another reminder of the need to stabilize global climate conditions as quickly as possible.
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A small country sets a shining example. Ghana has raised taxes on petroleum in order to fund solar energy development. Don’t overlook the fact that this “politically impossible” action is being accomplished by direct government order, so it can be done. Public acceptance surely benefits by starting with small and careful steps like these.
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Studies show wind turbines in Iowa are beneficial to agriculture. The extra turbulence helps plant growth, and more. Also, Iowa’s wind energy investment is set to double over the next five years, giving a boost to farm income.
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There are lots of new ideas for generating wind power more efficiently. From BBC, a good overview of the latest cutting edge technologies (none of which look like they would be helpful to Iowa farmers.)
Carl