Last week, on the free-market energy blog MasterResource.Org, I posted a two-part column on climate change and national security. In a nutshell, I argued that global warming is likely not an important geopolitical or military “threat multiplier,” and that the national security risks of climate change policies likely outweigh those of climate change itself.

One of the great things about “publishing” on the Internet is that readers can quickly and easily share other insights and information the author had not considered.

Climate scientist and fellow blogger Chip Knappenberger called my…

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Jerry Taylor of Cato has an excellent summary of what the scientific literature tells us about the social cost of carbon emissions, drawing on the comprehensive but sometimes opaque work of Richard Tol. His conclusion:

So what does Tol 2008 tell us about the social cost of carbon emissions (assuming that the underlying science from the IPCC is correct)? Given our skepticism about the underlying logic of discount rates of 1% or less, any number between $3 per ton and $24 per…

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