This is the first book I've read by the famed English journalist, and I thought it very good.
Monbiot speaks a lot of common sense, and in a way, his writing reminded me of George Orwell in its earnestness.
The book basically asks for citizens to reduce their standard of living in order to combat global warming. The suggestions in the book didn't seem too radical to me.
You can read my full review here at Suite101.