Chris Goodall is is a columnist for the Independent on Sunday, regularly delivers talks and presentations on climate change, and provides consulting advice to businesses and other institutions.

He also also written the fantastic book How to Live a Low-carbon Life. This is a great guide to the carbon cost of the home and of our everyday activities. What's more it provides simple and pragmatic advice on how to reduce it in a cost-effective manner. With real numbers based on real research and sound analysis, this is a book we can all use to make sensible steps to reduce our carbon footprint.

Everyone in the country needs to roughly cut their CO₂ emissions by half, and this book shows how it can be done in plain language.

If you don't feel up to stumping up the few quid for the book, it has a companion website which has a number of interesting articles.