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This is a cross-post from John Thackara's Doors of Perception newsletter - one well worth signing up to:

This is a cross-post from John Thackara's Doors of Perception newsletter - one well worth signing up to:

LOOK AT THE BIG NUMBERS, NOT AT THE SMALL NUMBERS (BOOK) [...] I'm reading a fantastically useful new book: Sustainable energy - without the hot air. Its author, David McKay, Professor of Natural Philosophy at Cambridge University, has responded to an urgent global challenge: how to make sense of the conflicting claims and information bandied about on all matters eco. The book is filled with insights like this one: "Leaving mobile phone chargers plugged in is often held up as an example of a behavioural eco-crime. The truth is that the amount of energy saved by switching off a phone charger is exactly the same as the energy used by driving an average car for one second". Prof McKay desevres a Nobel Prize for Usefulness. I boughbt the hardcopy, but you can download the book free: http://www.withouthotair.com/

Don't be put off by the vileness of McKay's site design, though.

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