An oddly structured book, a collage of information rather than a single thread (it would make a good basis for a hypertext/multi-media presentation). It covers a lot of ground and some readers may find it lacks depth, though it is very readable and has extensive bibliographical references.
The first chapters each contain a combination of traditional scientific information, artistic views, personnal anecdotes and views from various cultural perspectives of the value of and the human impact upon this planet. Each of the first five chapters uses a classical element (air, water, fire/energy, earth, spirit/life) as a theme.
He goes on to present an opinion of sensible human needs and values; personal liberty, community, diversity and similar ideas that can be attended to in ways that are both humanly satisfying and environmentally beneficial.
His last chapters bring in a profoundly personal note; we are in the midst of and party to the harm being caused to this planet, which can be a crushing realisation. He offers hope that small deeds are better than no deeds, and that moving on to more wholesome lifestyles, even if they're not perfect, is needed and acheivable now. He gives example stories and suggestions that make sense for city living people.
It doesn't require deep, complex thinking. It's not lost in a new age fairyland. It's pragmatic, and sound, engaging both intellect and emotions. For me it offered affirmation of my belief that finding a place in the world that is both emotionally right and rational with a lifetimes long pespective is achievable and important.