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All the analysis and commentary about safety and security on the tenth anniversary of 9/11 ignored by far the biggest ongoing threat to global security: climate change.

Just days before Sunday's commemoration of the attacks, German scientists pointed to yet another smoking gun of climate change: the Arctic sea ice reached a new historic minimum ice extent.

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Hi guys. This is a current post on the Oil Drum which I thought was quite important. Carlos de Castro, professor of of applied physics at University of Valladolid in Spain, published this paper in Energy Policy. He starts with the total available energy in the atmosphere and attempts to calculate how much is ultimately recoverable. He comes out with 1 Tw (Terrawatt). Since total world energy consumption is 17 Tw, wind can't ever contribute more than 6%. The link I give is to a summary of the paper. The original is behind a pay wall. It is followed by hundreds of comments, many very thoughtful. I take no position, but obviously if it is even partly accurate, it is a very serious assessment.
http://www.theoildrum.com/node/8322#more