The book “Without Hot Air” by David JC MacKay, was featured on NPR’s Science Friday list of summer books. It discusses some of the challenges for the future in Sustainable Energy and supposedly provides good non-technical explanations for technical concepts. Rather than killing a tree to get the physical book, you can download it in PDF form on the books website:
I have not read it yet, but it appears to be getting decent reviews on Amazon. I’ll write my own review if I get a chance to read it, but I thought I’d tell everyone about the free book.