Crossy Posted April 20, 2016 Share Posted April 20, 2016 Sadly, I discovered today that Professor David MacKay died earlier this month. He was a great man, whose book Sustainable Energy - Without the Hot Air taught me much.Download it for free or read online at the book's website. Or 20 Quid for a hard copy (paperback).Here http://www.withouthotair.com/ Link to comment Share on other sites More sharing options...
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