Biospheres: Metamorphosis of Planet Earth

First appearing as a McGraw-Hill hardcover in 1990, and then, later that year as a Bantam paperback, Biospheres: the Metamorphosis of Planet Earth, was translated into French and Italian. Dorion Sagan's first sole-authored book, it was a meditation on the nature of biospheric life, presenting a Nietzschean ecology and arguing that Earth itself did indeed bear signal traits of a living organism. Long out of print, this speculative work on the nature and future of life on Earth is once again being made available.