

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...


Earth as a cosmic seed is a biosphere. This book is about the concentric layers of experience at the Earth's surface, and the way the past gets tangled up in the present.
