Andrew Dobson's highly acclaimed introduction to green political thought is now available in a new fourth edition (2009). It has been fully revised and updated to take into account the areas that have grown in importance since the last edition was published.

This edition includes: a comparison of ecologism with other principal modern ideologies, such as liberalism, conservatism, fascism, socialism, feminism and anarchism; an assessment of the relationship between green thinking and democracy, justice and citizenship; an exploration of sustainable development; real environmental problems and how green thinking relates to them.