Carbon Counter - out now! 08 January 07

Ever wanted an easy guide to how to calculate your carbon footprint? Well, now you have one - and in a handy pocket-sized Collins Gem format. Starting with the essential background on why climate change is the world's biggest issue, the book then brings together all the calculations you need to make to discover your own contribution to global warming - all you need is a calculator, your gas and electricity bills, transport mileage and another couple of bits and pieces and you're there. (Here's my carbon footprint, using these same calculations.)

The next step is to work out how to reduce your carbon emissions – and I divide the book into household, transport and other areas in order to look at the practicalities. If you’re interested in generating your own renewable power, there are also contact details for installers, and details of government and other grants which might be available. Order now (with £1 off, so only £3.99) from Amazon.co.uk.