If you're interested in these sorts of calculations then I can recommend this book: http://www.amazon.co.uk/How-Bad-Are-Bananas-everything/dp/1846688914 http://

If you're interested in these sorts of calculations then I can recommend this book: http://www.amazon.co.uk/How-Bad-Are-Bananas-everything/dp/1846688914 http://www.amazon.co.uk/How-Bad-Are-Bananas-everything/dp/18... I found it a really good read and to geek it off it's written by the brother of the inventor of the web.