title: The evolution of life on the earth.
abstract: The history of life is not necessarily progressive; it is certainly not predictable. The earth's creatures have evolved through a series of contingent and fortuitous events.
authors.affiliation: Harvard University.
authors.forename: S J
authors.initials: SJ
authors.lastname: Gould
mesh_terms: D000818:Animals; D005075:Biological Evolution; D018534:Earth, Planet; D006801:Humans