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Environment & Energy

(20,885 posts)

1. I don't see how it works. Any 'ancient Carthage sailboat' experts in the house?

Mon Apr 25, 2016, 07:55 PM

Apr 2016

--imm

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How An Ancient Technology Could Revolutionize Wind Energy [View all] IDemo Apr 2016 OP

Not that but I see how it works... Boxerfan Apr 2016 #2