This classic work is reissued with a new preface by the author. Written for non-scientists the idea is put forward that life on Earth functions as a single organism.

James Lovelock proposes that all living species are components of that organism, as cells are components of the human body.

James Lovelock has been an active and accurate observer of the Earth environment since the 1930s and was the first to find CFCs and other gases accumulating in the air. This is his final warning.

The creator of the Gaia theory--that the Earth is a living organism--applies the traditional medical disciplines to ecological problems and solutions; here are anatomy, biochemistry, metabolism, etc.