12 December 2003
Vol 302, Issue 5652

About The Cover

Cover image expansion

COVER Earth from space, as seen from Apollo 17 in 1972. Following our survey of the State of the Planet in the previous four issues, this special issue explores the challenge of managing common resources, the dilemma posed 35 years ago this week by Garrett Hardin in his Science essay, "The Tragedy of the Commons." See page 1906. [Photo: NASA]